Articoli di riviste: "Thai fresh pork sausage"

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Torrieri, E., F. Russo, R. Di Monaco, S. Cavella, F. Villani e F. Masi. "Shelf Life Prediction of Fresh Italian Pork Sausage Modified Atmosphere Packed". Food Science and Technology International 17, n. 3 (giugno 2011): 223–32. http://dx.doi.org/10.1177/1082013210382328.

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The shelf life of fresh Italian pork sausages packed in modified atmosphere was studied. Samples were packed using different levels of oxygen (high and low) with different levels of carbon dioxide (high-low) in the atmospheres headspace and were stored at 4 °C for 9 days. Microbial, physiochemical and sensory parameters were analyzed during storage. A consumer test was performed to determine the critical acceptability levels. Sensory data were mathematically modelled to estimate product shelf life. A first-order kinetic model and a Weibull-type model aptly described, respectively, the changes in fresh pork sausage odor and color over storage time. These models may be used to predict the sensory shelf life of fresh pork sausage. Results showed that 20% O2 and 70% CO2 extend fresh pork sausage shelf life to 9 days at 4 °C. The microbial quality of the samples at the critical sensory level of acceptability was within the range of microbial acceptability.

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MÜRMANN, LISANDRA, LUIS GUSTAVO CORBELLINI, ALEXANDRE ÁVILA COLLOR e MARISA CARDOSO. "Quantitative Risk Assessment for Human Salmonellosis through the Consumption of Pork Sausage in Porto Alegre, Brazil". Journal of Food Protection 74, n. 4 (1 aprile 2011): 553–58. http://dx.doi.org/10.4315/0362-028x.jfp-10-339.

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A quantitative microbiology risk assessment was conducted to evaluate the risk of Salmonella infection to consumers of fresh pork sausages prepared at barbecues in Porto Alegre, Brazil. For the analysis, a prevalence of 24.4% positive pork sausages with a level of contamination between 0.03 and 460 CFU g−1 was assumed. Data related to frequency and habits of consumption were obtained by a questionnaire survey given to 424 people. A second-order Monte Carlo simulation separating the uncertain parameter of cooking time from the variable parameters was run. Of the people interviewed, 87.5% consumed pork sausage, and 85.4% ate it at barbecues. The average risk of salmonellosis per barbecue at a minimum cooking time of 15.6 min (worst-case scenario) was 6.24 × 10−4, and the risk assessed per month was 1.61 × 10−3. Cooking for 19 min would fully inactivate Salmonella in 99.9% of the cases. At this cooking time, the sausage reached a mean internal temperature of 75.7°C. The results of the quantitative microbiology risk assessment revealed that the consumption of fresh pork sausage is safe when cooking time is approximately 19 min, whereas undercooked pork sausage may represent a nonnegligible health risk for consumers.

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BANG, W., D. J. HANSON e M. A. DRAKE. "Effect of Salt and Sodium Nitrite on Growth and Enterotoxin Production of Staphylococcus aureus during the Production of Air-Dried Fresh Pork Sausage†‡". Journal of Food Protection 71, n. 1 (1 gennaio 2008): 191–95. http://dx.doi.org/10.4315/0362-028x-71.1.191.

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Staphylococcus aureus contamination and enterotoxin production is a potential food safety hazard during the drying step of production of air-dried fresh country sausage. The growth characteristics and enterotoxin production of S. aureus during the drying step of this product with and without added sodium nitrite were evaluated. Three strains of S. aureus were grown to stationary phase and inoculated (104 CFU/g) into sausage ingredients. Fresh pork sausages were stuffed into natural casings and allowed to dry for 10 days at 21°C with 60% relative humidity (RH). In control sausage (1.76% [wt/wt] salt) with no S. aureus, aerobic plate counts increased by 5.5 log/g during the 10-day drying period, and coliforms increased by 4.8 log/g. The addition of sodium nitrite (154 ppm of nitrite, 2.24% [wt/wt] salt) or increased salt (3.64%, wt/wt) to sausage limited the growth of coliform bacteria (P < 0.05). S. aureus numbers increased approximately 2 log units during the drying step, regardless of additional salt or nitrite. Additional salt or nitrite had no effect on S. aureus growth (P > 0.05). Staphylococcal enterotoxin (SE) was not detected in air-dried fresh sausages at any time. Our results suggest that drying of fresh pork sausage under similar parameters listed in this study does not support SE production.

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Mazhangara, Irene Rumbidzai, Eliton Chivandi e Ishmael Festus Jaja. "Consumer Preference for the Chevon Sausage in Blind and Nonblind Sensory Evaluations: A Comparative Study". International Journal of Food Science 2022 (29 luglio 2022): 1–7. http://dx.doi.org/10.1155/2022/8736932.

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There are strong perceptions regarding chevon consumption, with its strong aroma and smell and its stringiness and gaminess being chief among them. Processing chevon into by-products has resolved this negative perception associated with fresh chevon. A blind and nonblind comparative sensory evaluation was performed to investigate participant preference for the chevon sausage versus pork and beef sausages. The sausages were made from minced shoulder meat. After grilling the sausages, they were cut into 0.5 cm thick slices. There were 52 and 20 participants in the blind and nonblind sensory evaluations, respectively. Using a 9-point hedonic scale, the participants evaluated each sausage for its juiciness, flavor, tenderness, and overall satisfaction. During the blind sensory evaluation, the participants were also asked to identify one of the most distinct sausages since the identity of the sausages was not known. The results showed no significant differences ( P > 0.05 ) in the preferences for any of the sausages during the blind sensory evaluation. The choice for the most distinct sausage showed that pork (57.69%), beef (32.69%), and chevon (9.62%) sausages were all recognized. In the nonblind sensory, knowledge of the identity of the sausage significantly ( P < 0.05 ) influenced South African participants’ liking of the chevon sausage, with pork and chevon being the most and least liked sausages, respectively.

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Cavalin, Paola Bianca Barbosa, Juan Josue Puño Sarmiento, Renata Katsuko Takayama Kobayashi, Gerson Nakazato, Armando Navarro Ocaña e Tereza Cristina Rocha Moreira Oliveira. "Detection of Salmonella spp. and diarrheagenic Escherichia coli in fresh pork sausages". Semina: Ciências Agrárias 39, n. 4 (2 agosto 2018): 1533. http://dx.doi.org/10.5433/1679-0359.2018v39n4p1533.

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The presence of pathogenic microorganisms in meat products may result in foodborne diseases and economic losses to their producers. Small industries in the region of Londrina, Paraná, produce sausages that are commercialized in free fairs, small markets, bars, and restaurants in the city. Although these industries are inspected by the Municipal Inspection Service of Londrina, there are no data about the pathogenic microorganisms present in these products. The objective of this study was to investigate the presence of Salmonella spp. in sausages produced and sold in the region of Londrina, Paraná, and identify eae, bfp, stx1, stx2, hlyA, ipaH, elt, est, aggR, aap, and AA probe genes in Escherichia coli strains isolated from these samples. Forty-six samples of three types of sausages (fresh pork, Tuscan, and Calabresa) produced by four different producers (brands A, B, C, and D) were analyzed. Salmonella spp. was isolated from 13 (28.3%) and E. coli from 33 (71.3%) of the analyzed samples. Seven (53.8%) of 13 samples contaminated with Salmonella spp. were from brand A. Salmonella spp. contamination was the highest in the Tuscan sausage samples (8/17, 41.7%) when compared with the fresh pork sausage samples of all brands analyzed. E. coli was isolated from 12 of 13 samples contaminated with Salmonella spp. One sample of Calabresa sausage was contaminated with atypical enteropathogenic E. coli serotype O108:H9 that has the eae and hlyA genes. The results suggest contamination of the processing plant and/or raw meat used in the manufacture of sausages. A better inspection of the industries is required to ensure that Good Manufacturing Practices are followed by which the contamination of products by pathogenic bacteria can be prevented.

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FLORES, LISA M., SUSAN S. SUMNER, DIANNE L. PETERS e ROGER MANDIGO. "Evaluation of a Phosphate To Control Pathogen Growth in Fresh and Processed Meat Products". Journal of Food Protection 59, n. 4 (1 aprile 1996): 356–59. http://dx.doi.org/10.4315/0362-028x-59.4.356.

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The efficacy of a phosphate blend, Bekaplus MSP, to inhibit the growth of foodborne pathogens in fresh or processed meat products was studied. The following products and challenge microorganisms were tested: ground beef, Escherichia coli O157:H7; linked smoked sausage, Salmonella typhimurium and L. monocytogenes; cured smoked ham, S. typhimurium and L. monocytogenes; and fresh pork sausage, E. coli O157:H7. All the products were prepared with or without 0.5% phosphate, individually inoculated with the challenge microorganism (103CFU/g of meat), and stored at either 4, 12, or 20°C. There was minimal or no effect of the phosphate blend on the growth of L. monocytogenes or S. typhimurium. The temperature of storage had a significant effect (P < 0.05) on the population of E. coli O157:H7 in ground beef and fresh pork sausage with phosphate. However, the presence of phosphate in the ground beef had no effect (P > 0.05) on E. coli O157:H7, but the presence of phosphate in the fresh pork sausage had a significant effect (P < 0.05) on controlling E. coli O157:H7. These results indicate that this phosphate blend could be used in fresh pork sausage to help inhibit the growth of E. coli O157:H7.

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HERRERA, ANTONIO, AGUSTIN A. ARIÑO, MARIA P. CONCHELLO, REGINA LAZARO, SUSANA BAYARRI e CONSUELO PEREZ. "Organochlorine Pesticide Residues in Spanish Meat Products and Meat of Different Species". Journal of Food Protection 57, n. 5 (1 maggio 1994): 441–44. http://dx.doi.org/10.4315/0362-028x-57.5.441.

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The level of organochlorine pesticides in 229 samples of Spanish meat and meat products of different species (lamb, pork, beef and poultry) was investigated. Chlorinated residues were quantitated by gas-liquid chromatography with electron capture detector using packed and capillary columns. Hexachlorobenzene (HCB) and hexachlorocyclohexane (HCH) were detected in all samples. In general, lamb appeared to be more heavily contaminated by HCB and HCH, which reached maximums of 178 ppb (μg/kg on a fat basis) and 505 ppb, respectively. The level of HCB averaged 49 ppb in lamb; varied between 8–18 ppb in pork and beef products; and amounted to 26 ppb in fresh poultry sausages. Of the three isomers of HCH determined, the γ-HCH (lindane) was most frequently detected; 100% in lamb and pork (both meat, cured sausage and pork bologna), and 64 to 94% in fresh sausages of poultry and beef. The level of the HCH group averaged 112 ppb in lamb, 85 ppb in poultry, nearly half that much in pork and pork products, and around 20–40 ppb in beef products. Dieldrin was the only chlorocyclodiene detected: 8 to 15% in pork products, and 28% in fresh poultry sausage. The DDTs in lamb showed 83% of detection, especially in the pp' form of DDE and DDT. The overall contamination with DDT and its metabolites was found to be very moderate averaging 25 ppb, with a maximum of 91 ppb. No residues of aldrin, endrin, heptachlor, heptachlor epoxide, chlordane, methoxychlor, endosulfan or trans-nonachlor were detected.

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Stefanello, Flávia Santi, Carlos Pasqualin Cavalheiro, Fernanda Luísa Ludtke, Mariana dos Santos da Silva, Leadir Lucy Martins Fries e Ernesto Hashime Kubota. "OXIDATIVE AND MICROBIOLOGICAL STABILITY OF FRESH PORK SAUSAGE WITH ADDED SUN MUSHROOM POWDER". Ciência e Agrotecnologia 39, n. 4 (agosto 2015): 381–89. http://dx.doi.org/10.1590/s1413-70542015000400009.

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Consumers are becoming more aware of the toxicological implications of artificial additives in foods. Natural antioxidants, in addition to reducing the deleterious effects of lipid oxidation, are currently extremely highly valued. This study aimed to invetigate the effect of addition of sun mushroom (Agaricus blazei Murrill) powder on the oxidative and microbiological stability of pork sausage during the shelf life. This powder was used at concentrations of 0.0%, 1.0%, 2.0% and 4.0% in the sausages. Analyses of moisture, protein, ash, fat and microbiological analyses were performed on day 0. The sausages were analyzed on day 0 and every seven days in terms of pH, color, TBARS values and microbiological analyses. The results of the proximal composition and microbiological analysis for coagulase positive Staphylococcus, coliforms at 35 ºC and 45 ºC, Salmonella sp and sulfite-reducing Clostridium were consistent with those required by Brazilian legislation. The color of the products was of a decreased redness At the end of the storage period, on the 35th day, the TBARS values for the sausage with 4.0% powder was 0.509±0.12 mg MDA/kg sample and for the control was 1.131±0.12 mg MDA/kg sample. The sun mushroom powder had no effect on microbiological stability. It is concluded that sun mushroom was effective in terms of the oxidative stability of pork sausage when added in powdered form at concentrations of 1.0%, 2.0% and 4.0%.

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LAURY, ANGELA, e JOSEPH G. SEBRANEK. "Use of Carbon Monoxide Combined with Carbon Dioxide for Modified Atmosphere Packaging of Pre- and Postrigor Fresh Pork Sausage To Improve Shelf Life". Journal of Food Protection 70, n. 4 (1 aprile 2007): 937–42. http://dx.doi.org/10.4315/0362-028x-70.4.937.

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Fresh pre- and postrigor pork sausage patties were manufactured in the Iowa State University Meat Laboratory and packaged either in modified atmosphere (MAP) with 0.4% carbon monoxide (CO) and 99.6% carbon dioxide (CO2) or on foam trays overwrapped with oxygen-permeable film (OW). Packages were stored at 2 to 4°C under fluorescent lights for up to 31 days. Aerobic, anaerobic, and psychrotrophic plate counts, raw and cooked color, purge, and lipid oxidation were measured during storage. Results indicated that both pork sausage products in MAP had lower aerobic and psychrotrophic counts and less lipid oxidation throughout storage (P < 0.05). Raw color of both products in MAP was redder than the OW patties (P < 0.05), but the prerigor pork sausage in MAP benefited more from the CO atmosphere in terms of raw color than the postrigor pork sausage in MAP. Cooked color of the prerigor pork sausage in MAP was significantly redder than cooked color of the postrigor pork sausage. Both pork sausage products in MAP were also lighter (L* value) than the OW patties for raw and cooked color. Therefore, the combination of CO and CO2 in MAP was beneficial in extending the shelf life of preand postrigor fresh pork sausage by reducing aerobic and psychrotrophic microbial growth and improving oxidative stability and color, compared to conventional OW packaging. However, increased purge, increased anaerobic growth, and changes in cooking behavior were also observed for the products in MAP during storage (P < 0.05).

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SCANNELL, AMALIA G. M., R. PAUL ROSS, COLIN HILL e ELKE K. ARENDT. "An Effective Lacticin Biopreservative in Fresh Pork Sausage". Journal of Food Protection 63, n. 3 (1 marzo 2000): 370–75. http://dx.doi.org/10.4315/0362-028x-63.3.370.

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Lacticin 3147 is a novel heat-stable bacteriocin, produced by Lactococcus lactis DPC 3147, that exhibits a broad-range inhibition spectrum similar to nisin. In this study, the effect of lacticin 3147 and nisin on the shelf life of fresh pork sausage and their ability to control pathogens (Clostridium perfringens DSM 756, Salmonella Kentucky AT1) and nonpathogenic Listeria innocua DPC 1770 was investigated. The following preservative regimens were evaluated, both in broth and sausage systems: (i) 450 ppm of sodium metabisulphite; (ii) 500 IU g−1 or ml−1 of nisin, (iii) 2500 arbitary units (AU) g−1 or ml−1 of lacticin 3147; (iv) 2% sodium lactate and 500 IU of nisin; (v) 2% sodium citrate and 500 IU g−1 or ml−1 of nisin; (vi) 2% sodium lactate and 2500 AU g−1 or ml−1 of lacticin 3147, (vii) 2% sodium citrate and 2500 AU g−1 or ml−1 of lacticin 3147, (viii) 2% sodium lactate, and (ix) 2% sodium citrate. There was no significant difference in the activity of nisin and lacticin 3147 against any of the target strains used, both bacteriocins performing significantly better than sodium metabisulfite against gram-positive strains in broth systems. Trends indicate that the combination of organic acids with either bacteriocin enhanced its activity against Salmonella Kentucky and L. innocua and was particularly effective in the inhibition of C. perfringens in fresh pork sausage. In addition, lacticin 3147 combined with either sodium citrate or sodium lactate maintained significantly lower (P < 0.05) total aerobic plate counts for the duration of the trials and may function as an alternative to sodium metabisulfite in the preservation of fresh pork sausage.

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Dias, Rafael André Ferreira, Italmar Teodorico Navarro, Bruno Bergamo Ruffolo, Felipe Monteiro Bugni, Marcelo Viana de Castro e Roberta Lemos Freire. "Toxoplasma gondii in fresh pork sausage and seroprevalence in butchers from factories in Londrina, Paraná State, Brazil". Revista do Instituto de Medicina Tropical de São Paulo 47, n. 4 (agosto 2005): 185–89. http://dx.doi.org/10.1590/s0036-46652005000400002.

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The aims of this study were to verify the presence of Toxoplasma gondii cysts in fresh pork sausage and the presence of antibodies against T. gondii in serum of workers from factories with Municipal Inspection Service, in Londrina, PR, Brazil. 149 samples of sausage were collected from eight factories and blood samples from 47 workers. We also took information about the practices that were adopted in the factories and the workers' habits that could influence the prevalence of toxoplasmosis. After bioassay in mice, 13 (8.7%) sausage samples were positive, in one of them T. gondii was isolated and in the other 12 the mice seroconverted. Of 47 workers, 36 (76.6%) worked in sausage production and 11 (23.4%) were involved in other functions; 59.5% (28/47), 55.5% (20/36) and 72.7% (8/11), respectively, had T. gondii antibodies. There were no significant differences in the variables of industries' practices and workers' habits related to T. gondii infection. We concluded that fresh pork sausage could be important in the transmission of toxoplasmosis.

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BAILEY, J. S., J. Y. CHIU, N. A. COX e R. W. JOHNSTON. "Selective Procedure for Detection of Salmonellae from Poultry and Sausage Products". Journal of Food Protection 51, n. 5 (1 maggio 1988): 391–96. http://dx.doi.org/10.4315/0362-028x-51.5.391.

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The efficacy of lactose preenrichment and various selective enrichment and differential plating media were evaluated to determine the optimal procedure for detecting salmonellae from fresh chicken or frozen turkey, pork sausage, and cured chicken. Salmonellae were most frequently recovered from fresh poultry or pork sausage when samples were preenriched in lactose broth incubated at 35°C, selectively enriched in TT broth at 43°C, and streaked onto a new differential plating medium, modified lysine iron agar (MLIA/USDA). Enrichment of cured chicken in selenite brilliant green broth incubated at 43°C was more productive than in TT incubated at 43°C. When poultry and sausage samples were first preenriched at 35°C, selectively enriched at 43°C, and then streaked onto MLIA/USDA greater than 75% of all CFUs on the MLIA/USDA plates were typical of salmonellae. Different procedures are recommended for maximal recovery of salmonellae from fresh, frozen or cured poultry products.

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GONZALES-BARRON, URSULA, GRAINNE REDMOND e FRANCIS BUTLER. "Modeling Prevalence and Counts from Most Probable Number in a Bayesian Framework: An Application to Salmonella Typhimurium in Fresh Pork Sausages". Journal of Food Protection 73, n. 8 (1 agosto 2010): 1416–22. http://dx.doi.org/10.4315/0362-028x-73.8.1416.

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Prevalence and counts of Salmonella Typhimurium in fresh pork sausage packs at the point of retail were modeled by using Irish and United Kingdom retail surveys' data. A methodology for modeling a second-order distribution for the initial Salmonella concentration (λ0) in pork sausage at retail was presented considering the uncertainty originated from the most-probable-number (MPN) serial dilutions. A conditional probability of observing the tube counts given true Salmonella concentration in a contaminated pack was built from the MPN triplets of every sausage tested. A posterior distribution was then modeled under the assumption that the counts from each of the portions of sausage mix stuffed into casings (and subsequently packed) are Poisson distributed. In order to model the variability of λ0 among contaminated sausage packs, MPN uncertainties were propagated to a predefined lognormal distribution. Because the sausage samples from the Irish survey were frozen prior to MPN analysis (which is expected to cause reduction in viable cells), the resulting distribution for λ0 appeared greatly underestimated (mean: 0.514 CFU/g; 95% confidence interval [CI]: 0.02 to 2.74 CFU/g). The λ0 distribution produced with the United Kingdom survey data (mean: 69.7 CFU/g; 95% CI: 15 to 200 CFU/g) was, however, more conservative, and is to be used along with the fitted distribution for prevalence of Salmonella Typhimurium in pork sausage packs in Ireland (gamma[37.997, 0.0013]; mean: 0.046; 95% CI: 0.032 to 0.064) as the main inputs of a stochastic consumer-phase exposure assessment model.

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DUFFY, E. A., K. E. BELK, J. N. SOFOS, G. R. BELLINGER, A. PAPE e G. C. SMITH. "Extent of Microbial Contamination in United States Pork Retail Products". Journal of Food Protection 64, n. 2 (1 febbraio 2001): 172–78. http://dx.doi.org/10.4315/0362-028x-64.2.172.

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To determine the extent of microbiological contamination of U.S. pork, 384 samples of retail pork were collected from 24 stores in six cities, including (i) whole-muscle, store-packaged pork; (ii) fresh, store-packaged ground pork and/or pork sausage; (iii) prepackaged ground pork and/or pork sausage; and (iv) whole-muscle, enhanced (injected or marinated; 60% store-packaged, 40% prepackaged) pork. Additional samples (n = 120) of freshly ground pork and/or pork sausage were collected from two hot-boning sow/boar sausage plants, two slaughter and fabrication plants, and two further-processing plants. Samples were analyzed for aerobic plate counts (APC), total coliform counts (TCC), Escherichia coli counts (ECC), and incidences of Salmonella spp., Listeria monocytogenes, Campylobacter jejuni, Campylobacter coli, and Yersinia enterocolitica. Mean log APC and TCC were highest (P < 0.05) for store-ground pork, while whole-muscle, enhanced products and pre-packaged ground products had the lowest (P < 0.05) APC. Mean log APC and TCC were higher (P < 0.05) in samples from the slaughter and fabrication plants than in samples from hot-boning and further processing plants. Mean log ECC were lower (P < 0.05) in samples from further-processing plants compared to slaughter and fabrication plants and hot-boning, sow and boar sausage plants. L. monocytogenes was detected in 26.7% of plant samples and 19.8% of retail samples and was present more frequently in ground products. Y. enterocolitica was detected most often in whole-muscle, store-packaged cuts (19.8%) and in store-ground product (11.5%). Salmonella spp. were found in 9.6% of retail samples and 5.8% of plant samples, while C. jejuni and C. coli were found in 1.3% of retail samples and 6.7% of plant samples. Pork products exposed to the most handling and processing appeared to be of the poorest microbiological quality. These results should be useful in risk assessments that are directed at the identification of actions that could enhance food safety.

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Mohammed, Halimah O., Michael N. O’Grady, Maurice G. O’Sullivan, Ruth M. Hamill, Kieran N. Kilcawley e Joseph P. Kerry. "Acceptable Inclusion Levels for Selected Brown and Red Irish Seaweed Species in Pork Sausages". Foods 11, n. 10 (23 maggio 2022): 1522. http://dx.doi.org/10.3390/foods11101522.

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Commercially available Irish edible brown (Himanthalia elongata—sea spaghetti (SS), Alaria esculenta—Irish wakame (IW)) and red (Palmaria palmata—dulse (PP), Porphyra umbilicalis—nori) seaweeds were incorporated into pork sausages at 1%, 2.5%, and 5%. Proximate composition, salt, water-holding (WHC), cook loss, instrumental colour analysis, texture profile analysis (TPA), and sensory analysis were examined. Protein (13.14–15.60%), moisture (52.81–55.71%), and fat (18.79–20.02%) contents of fresh pork sausages were not influenced (p > 0.05) by seaweed type or addition level. The ash content of pork sausages containing PP, SS, and IW at 2.5% and 5%, and nori at 5%, were higher (p < 0.05) than the control sample. In comparison to the control, sausages containing nori, SS, and IW at 5% displayed higher (p < 0.05) WHC. Cook loss was unaffected (p > 0.05) by the addition of seaweeds into sausage formulations, compared to the control and within each seaweed. The addition of seaweeds into sausages had an impact on the surface colour (L* a* b*) and texture profile analysis (TPA) at different inclusion levels. Overall, hedonic sensory acceptability decreased (p < 0.05) in cooked sausages containing PP at 2.5% and 5%, and SS and IW at 5%.

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Venzor, Leila G., William B. Smith, Jolena N. Waddell e Lea A. Kinman. "80 Effectiveness of naturally sourced mixed tocopherols as an antioxidant when compared to Bha and Bht in fresh pork sausage". Journal of Animal Science 97, Supplement_1 (luglio 2019): 26–27. http://dx.doi.org/10.1093/jas/skz053.058.

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Abstract Fresh ground pork products are highly susceptible to deteriorative oxidation due to high fat content and increased surface area exposure of proteins. Recent trends and health concerns among consumers have sparked interest in finding alternatives for synthetic ingredients used for preservation of commercially manufactured processed meats. The objective of this study was to compare the effectiveness of naturally sourced mixed tocopherols to a mixture of butylated hydroxylanisole (BHA) and butylated hydroxytoluene (BHT) on prevention of lipid oxidation and color stability in fresh pork sausage patties. Duplicate batches of pork Boston butt trim and pork back fat were mixed 5:1, respectively, coarse ground, and combined with pork sausage seasoning. Pork mixture was then fine ground and 3175.5 g portions were assigned to one of three treatments: no antioxidants (CON), 0.01% of BHA and 0.01% BHT mixture (SYN), or 0.03% Decanox MTS30P (MTS). Patties (56.7 g) were hand pressed, placed on Styrofoam trays (S4), polyvinyl chloride film overwrapped and positioned in a retail display case. Patties (n = 45) were evaluated for instrumental color (L*, a*, and b*) and display discoloration (1 = very bright, to 8 = tan to brown) in 12-hr intervals for 252 hr. Fifteen patties from each treatment were collected for thiobarbituric acid reactive substance analysis. No differences between treatments (P > 0.05) were found for display discoloration or instrumental color. SYN patties had significantly lower malondialdehyde values (P = 0.047) than both CON and MTS patties at 252 hr. In conclusion, mixed tocopherols were not as effective as synthetic antioxidants in slowing lipid oxidation. However, it can be noted that mixed tocopherols can replace synthetic antioxidants in ground pork sausage and have the same effect on color stability.

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ROTA, CARMINA, JAVIER YANGÜELA, DOMINGO BLANCO, JUAN J. CARRAMIÑANA, AGUSTIN ARIÑO e ANTONIO HERRERA. "High Prevalence of Multiple Resistance to Antibiotics in 144 Listeria Isolates from Spanish Dairy and Meat Products". Journal of Food Protection 59, n. 9 (1 settembre 1996): 938–43. http://dx.doi.org/10.4315/0362-028x-59.9.938.

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The resistance to 12 commonly used antimicrobial agents of 144 foodborne isolates belonging to the genus Listeria (23 L. monocytogenes, 54 L. innocua, 66 L. seeligeri, and 1 L. welshimeri) was tested by using the agar disc-diffusion assay. The Listeria strains were isolated from dairy products (different varieties of unripened fresh and bacteria-ripened hard cheeses made from ewe's, cow's, and goat's milk) and meat products (longaniza, a type of pork sausage). A total of 84 (93%) and 54 (100%) Listeria strains isolated from cheese and pork sausage, respectively, were resistant to multiple antimicrobial agents. More than 80% of the Listeria strains of both food origins were found to be susceptible to penicillin G and ampicillin, whereas the proportion of isolates resistant to the cephalosporins cefotaxime and cefoxitin was nearly 100%. The prevalence of resistance was much higher for isolates from pork sausage (73.8% on average) than for isolates from cheese (20.9%). This marked difference was statistically significant (P < 0.05; chi-square test) for all antibiotics except ampicillin, cefotaxime, and cefoxitin. The strains of the foodborne pathogen L. monocytogenes isolated from cheese were all susceptible to 9 of the 12 antimicrobial agents evaluated. In contrast, more than 80% of the L. monocytogenes strains isolated from pork sausage exhibited resistance to cefotaxime, cefoxitin, tobramycin, amikacin, chloramphenicol, tetracycline, and erythromycin. The appearance of substantial resistance to antibiotics in foodborne Listeria isolates suggests the need for more prudent use of antibiotics by farmers, veterinarians, and physicians.

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VITALE, MARIA, GIOVANNI TUMINO, SAMANTA PARTANNA, STELLA LA CHIUSA, GIORGIO MANCUSO, MARIA LA GIGLIA e VINCENZO DI MARCO LO PRESTI. "Impact of Traditional Practices on Food Safety: A Case of Acute Toxoplasmosis Related to the Consumption of Contaminated Raw Pork Sausage in Italy". Journal of Food Protection 77, n. 4 (1 aprile 2014): 643–46. http://dx.doi.org/10.4315/0362-028x.jfp-13-285.

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Abstract (sommario):

A case of acute toxoplasmosis in an adolescent girl, almost certainly related to the consumption of raw sausage, is described. The girl suffered of fever and weakness and presented a swollen lymph node in the submandibular region. Serology analysis was positive for Toxoplasma gondii and excluded other infections. Further analysis, with avidity test and immunoblot, confirmed the acute toxoplasmosis. She reported that about a month before the appearance of the symptoms, she had eaten a piece of raw sausage while it was being prepared by her father. We analyzed sausage samples prepared from this same batch that had been frozen for later consumption, and they demonstrated evidence of T. gondii DNA when using a specific nested PCR assay. The sausage was prepared from the meat of a pig that had been backyard raised and slaughtered at home, a traditional practice in rural communities in many countries. The tasting of fresh prepared raw sausage is a common practice throughout Italy, and it could be a major cause for toxoplasmosis as suggested by the results of a questionnaire administered in the province of Palermo, Sicily. Contact with cats and, to a lesser extent, raw salad consumption were also referred to as presumptive causes for the symptomatic cases. Two additional cases of acute toxoplasmosis reported during questionnaire administration were alleged to have been caused by the consumption of fresh sausage made with the meat of a pig raised in the yard. Traditional practices in animal farming, and the processing of meat from animals raised in the backyard or meat from wild game animals, might have a big impact on food safety.

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19

MURANO, ELSA A., PETER S. MURANO, ROBERT E. BRENNAN, KALPANA SHENOY e ROSANA G. MOREIRA. "Application of High Hydrostatic Pressure to Eliminate Listeria monocytogenes from Fresh Pork Sausage". Journal of Food Protection 62, n. 5 (1 maggio 1999): 480–83. http://dx.doi.org/10.4315/0362-028x-62.5.480.

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Abstract (sommario):

Ground pork patties were inoculated separately with 109 CFU/g each of three strains of Listeria monocytogenes obtained from the National Animal Disease Center (NADC). Inoculated patties were packaged under vacuum and treated at 414 megapascals (60,000 lb/in2) for up to 60 min by high hydrostatic pressure (HHP). Survivors were determined by surface plating onto modified Oxford agar and trypticase soy agar with yeast extract, as well as by the most probable number method using Listeria enrichment broth. Average D values ranged from 1.89 to 4.17 min, depending on the strain, with the most virulent strain (reported by the NADC) having the highest D value. We tested the usefulness of applying a mild heat treatment at 50°C, simultaneously with HHP, to lower these values. Average D values ranged from 0.37 to 0.63 min, depending on the strain. Thus, a 10-log10 reduction could be achieved even in the most pressure-resistant strain of L. monocytogenes by a 6-min application of heat and HHP. Shelf life studies were also conducted, with spoilage levels reached after 5 days of storage at 4°C for controls versus 28 days for treated samples. Sensory evaluation of uninoculated grilled patties showed that panelists could not distinguish between those treated by heat and HHP and untreated controls (P < 0.05). Thus, treatment by HHP in combination with mild heating can be used successfully to produce safer, longer-lasting fresh pork without affecting quality.

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20

T, Nkrumah, e Akwetey WY. "Microbiological and Nutritional Properties of Frankfurter-Type Fish Sausage". International Journal of Nutrition, n. 2 (29 agosto 2018): 27–34. http://dx.doi.org/10.14302/issn.2379-7835.ijn-18-2212.

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Abstract (sommario):

Fish meat is a common and broadly used food due to its high nutritional values yet the bones and flavour of fresh fish can be unpleasant. The unpleasant fishy flavour makes it difficult to handle and process. The fishy flavour is as a result of microbial presence and growth. Studies associated with microbial contaminations have concentrated more on the carcass. Such contaminations which affect the microbiological status of processed products can emanate from spices and other non-meat ingredients, environment, equipment and handlers. The successful application of processing/preservation technology results in the conservation of desirable qualities in stabilized and varietal fish products. This study sought to use fish in the manufacture of frankfurter-type sausages, which could have improved preservation characteristics without any adverse effects on sensory properties. The nutritional composition and microbiological safety of fresh fish and sausages were determined using the methods described by AOAC and ICMSF respectively. The study showed that, catfish sausages were higher in protein (15.69 %) and were lower in fat (10.66%) compared to the other sausages. Total Viable Counts (TVC) were within the accepted limits (106 and 107cfu/g) for fish and pork respectively. E. coli was not detected in any of the treatments during frozen storage for 6 weeks. It was concluded that catfish frankfurter has high nutritive value because it contained less fat but with higher crude protein. Like pork frankfurters, both catfish and mackerel sausages could be stored for six weeks without any negative effects on microbial quality.

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21

Sánchez-Escalante, A., G. Torrescano, J. P. Camou, M. N. Ballesteros e N. F. González-Méndez. "Utilization of applesauce in a low-fat bologna-type product Empleo del pure de manzana en la elaboración de productos del tipo mortadela". Food Science and Technology International 6, n. 5 (ottobre 2000): 379–86. http://dx.doi.org/10.1177/108201320000600504.

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Abstract (sommario):

Apples ( Malus pumila ) such as Anna and Dorsett Golden are varieties with limited fresh commercial usage due to their small size, high acidity and scarce red pigmentation. However, they can be pro cessed to make applesauce that can be used as an ingredient in the elaboration of meat products. A bologna-type product was produced replacing fat with 15% applesauce ( Anna, Dorsett Golden and Golden Delicious varieties) to evaluate chemical, physical and sensory properties. Mechanically deboned turkey meat and pork shoulder was used. Ten and twenty percent of backfat and regular fat were added to products with applesauce and the control sample, respectively. Addition of applesauce to the formulation had no effect on cook yield after thermal processing, which was 96%. A 25% fat reduction was accomplished in the finished product with respect to the control. Moisture increased from 56% in the control to 63% in bologna sausage with applesauce. There were no effects on texture parameters and there was a lowering effect ( p < 0.05) in L value for lightness by applesauce addition. Bologna sausage with Golden Delicious apple sauce was the sweetest as evaluated by panelists. In overall acceptability for all bologna sausages, scores ranged between acceptable and good. It is advis able to use applesauce as an ingredient in emulsion-type products like bologna sausages to replace fat and still produce an acceptable product.

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22

HEW, CARRIE M., MAHA N. HAJMEER, THOMAS B. FARVER, HANS P. RIEMANN, JAMES M. GLOVER e DEAN O. CLIVER. "Pathogen Survival in Chorizos: Ecological Factors". Journal of Food Protection 69, n. 5 (1 maggio 2006): 1087–95. http://dx.doi.org/10.4315/0362-028x-69.5.1087.

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Abstract (sommario):

This study addressed health risks from ethnic sausages produced on a small scale, without inspection, in California and elsewhere. Mexican-style chorizo, a raw pork sausage that is not cured, fermented, or smoked, was contaminated experimentally in the batter with Escherichia coli O157:H7, Listeria monocytogenes, or Salmonella serotypes and stuffed into natural casings. Formulations were based on a market survey in California. Physical parameters that were controlled were pH, water activity (aw), and storage temperature. The pH was adjusted with vinegar, stabilizing at 5.0 within 24 h. Initial aw levels adjusted with salt were 0.97, 0.95, 0.93, 0.90, and 0.85; levels declined with time because of evaporation. Pathogen numbers declined with storage up to 7 days, with few brief exceptions. Main effects and interactions of constant temperature and pH with declining aw on survival of the pathogens were determined. Maximum death rates occurred at higher aw for E. coli O157:H7 and Salmonella than for L. monocytogenes. Salt used to adjust aw affected palatability. Spices (black pepper, chili pepper, chili powder, cumin, garlic, guajillo pepper, oregano, and paprika) comprised another, potentially significant aspect of the sausage formulation. Some (notably black pepper and cumin) carried an indigenous microflora that contributed significantly to the microbial load of the sausage batter. Only undiluted fresh and powdered garlic exhibited a significant antimicrobial effect on the pathogens. Although each of the tested formulations caused death of the inoculated pathogens, none of the death rates was sufficiently rapid to ensure safety within the probable shelf life of the product.

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23

Pulsrikarn, Chaiwat, Anusak Kedsin, Parichart Boueroy, Peechanika Chopjitt, Rujirat Hatrongjit, Piyarat Chansiripornchai, Nipattra Suanpairintr e Suphachai Nuanualsuwan. "Quantitative Risk Assessment of Susceptible and Ciprofloxacin-Resistant Salmonella from Retail Pork in Chiang Mai Province in Northern Thailand". Foods 11, n. 19 (20 settembre 2022): 2942. http://dx.doi.org/10.3390/foods11192942.

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Abstract (sommario):

The adverse human health effects as a result of antimicrobial resistance have been recognized worldwide. Salmonella is a leading cause of foodborne illnesses while antimicrobial resistant (AMR) Salmonella has been isolated from foods of animal origin. The quantitative risk assessment (RA) as part of the guidelines for the risk analysis of foodborne antimicrobial resistance was issued by the Codex Alimentarius Commission more than a decade ago. However, only two risk assessments reported the human health effects of AMR Salmonella in dry-cured pork sausage and pork mince. Therefore, the objective of this study was to quantitatively evaluate the adverse health effects attributable to consuming retail pork contaminated with Salmonella using risk assessment models. The sampling frame covered pork at the fresh market (n = 100) and modern trade where pork is refrigerated (n = 50) in Chiang Mai province in northern Thailand. The predictive microbiology models were used in the steps where data were lacking. Susceptible and quinolone-resistant (QR) Salmonella were determined by antimicrobial susceptibility testing and the presence of AMR genes. The probability of mortality conditional to foodborne illness by susceptible Salmonella was modeled as the hazard characterization of susceptible and QR Salmonella. For QR Salmonella, the probabilistic prevalences from the fresh market and modern trade were 28.4 and 1.9%, respectively; the mean concentrations from the fresh market and modern trade were 346 and 0.02 colony forming units/g, respectively. The probability of illness (PI) and probability of mortality given illness (PMI) from QR Salmonella-contaminated pork at retails in Chiang Mai province were in the range of 2.2 × 10−8–3.1 × 10−4 and 3.9 × 10−10–5.4 × 10−6, respectively, while those from susceptible Salmonella contaminated-pork at retails were in the range 1.8 × 10−4–3.2 × 10−4 and 2.3 × 10−7–4.2 × 10−7, respectively. After 1000 iterations of Monte Carlo simulations of the risk assessment models, the annual mortality rates for QR salmonellosis simulated by the risk assessment models were in the range of 0–32, which is in line with the AMR adverse health effects previously reported. Therefore, the risk assessment models used in both exposure assessment and hazard characterization were applicable to evaluate the adverse health effects of AMR Salmonella spp. in Thailand.

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24

SNYDER, HEATHER L., STEVEN E. NIEBUHR e JAMES S. DICKSON. "Transfer of Methicillin-Resistant Staphylococcus aureus from Retail Pork Products onto Food Contact Surfaces and the Potential for Consumer Exposure". Journal of Food Protection 76, n. 12 (1 dicembre 2013): 2087–92. http://dx.doi.org/10.4315/0362-028x.jfp-13-143.

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Abstract (sommario):

Methicillin-resistant Staphylococcus aureus (MRSA) is a pathogen that has developed resistance to beta-lactam antibiotics and has been isolated at low population numbers in retail meat products. The objectives of this study were to estimate the potential transfer of MRSA from contaminated retail pork products to food contact surfaces and to estimate the potential for human exposure to MRSA by contact with those contaminated surfaces. Pork loins, bacon, and fresh pork sausage were inoculated with a four-strain mixed MRSA culture over a range of populations from approximately 4 to 8 log, vacuum packaged, and stored for 2 weeks at 5°C to simulate normal packaging and distribution. Primary transfer was determined by placing inoculated products on knife blades, cutting boards, and a human skin model (pork skin) for 5 min. Secondary transfer was determined by placing an inoculated product on the contact surface, removing it, and then placing the secondary contact surface on the initial contact surface. A pork skin model was used to simulate transfer to human skin by placing it into contact with the contact surface. The percentages of transfer for primary transfer from the inoculated products to the cutting board ranged from 39 to 49%, while the percentages of transfer to the knife ranged from 17 to 42%. The percentages of transfer from the inoculated products to the pork skin ranged from 26 to 36%. The secondary transfer percentages ranged from 2.2 to 5.2% across all products and contact surfaces. Statistical analysis showed no significant differences in the amounts of transfer between transfer surfaces and across cell concentrations.

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25

Tran, Tan M. "A multiplex real-time PCR method for differentiation of beef, buffalo meat and pork". Journal of Agriculture and Development 18, n. 01 (28 febbraio 2019): 63–71. http://dx.doi.org/10.52997/jad.8.01.2019.

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Abstract (sommario):

The objective of this study was to optimize a multiplex real-time PCR protocol for detection of DNA of beef, buffalo meat and pork, serving for food authenticity. The optimized concentrations were 200 nM primer and 100 nM specific probe for beef/buffalo meat, and 300 nM primer and 150 nM probe for pork. The amplification was performed using initial denaturation at 50oC for 2 min, 95oC for 2 min, followed by 45 cycles of denaturation at 95oC for 15 sec, and annealing and extension at 60oC for 40 sec. This protocol had high sensitivity and specificity. The detection limit of this method was found to be 0.1% in raw and heat-treated meat mix (80 – 121oC/15 min) or 0.005 ng DNA/reaction. The protocol of testing was applied for the commercial products both fresh and processed meats. The results demonstrated that 50% of raw beef sample (6/12) weren't found beef DNA. Eight of twelve beef sausage samples (66.67%) contained buffalo DNA. Beef DNA were found in all 12 samples of beef meatballs, but eight out of the 12 meatball samples were confirmed to have buffalo DNA (66.67%) and two out of the 12 meatball samples (16.67%) also contained porcine DNA.

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26

CABEDO, L., L. PICART i BARROT e A. TEIXIDÓ i CANELLES. "Prevalence of Listeria monocytogenes and Salmonella in Ready-to-Eat Food in Catalonia, Spain". Journal of Food Protection 71, n. 4 (1 aprile 2008): 855–59. http://dx.doi.org/10.4315/0362-028x-71.4.855.

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Abstract (sommario):

Listeria monocytogenes and Salmonella are pathogenic bacteria that can contaminate food products during or after processing. Ready-to-eat (RTE) food does not undergo any treatment to ensure its safety before consumption, and therefore risk of foodborne disease must be considered if these pathogens are present in the food. To evaluate the prevalence of these pathogens in RTE food, 140 RTE fish product samples, 501 RTE meat product samples, 462 RTE dairy samples, and 123 RTE dishes and desserts, providing a total of 1,226 samples, were collected from retail stores and food industry and analyzed for the presence of L. monocytogenes. A total of 1,379 samples consisting of 187 RTE fish products and 569 RTE meat products, 484 RTE dairy products, and 139 RTE dishes and desserts were collected and analyzed for the presence of Salmonella. L. monocytogenes was isolated from 20% of frozen Atlantic bonito small pies, 7.9% of smoked salmon samples, 11.1% of the pork luncheon meat samples, 6.2% of frozen chicken croquettes, 16.9% of cured dried sausage samples, 12.5% of cooked ham samples, and 20% of cooked turkey breast samples. L. monocytogenes was also found to be present in 1.3% of fresh salty cheese samples and 15.1% of frozen cannelloni samples. Salmonella was isolated from 1.2% of smoked salmon samples, 1.5% of frozen chicken croquettes, 2% of cooked ham samples, and 11.1% of cured dried sausage samples. Overall, occurrence of these pathogens in RTE foods was similar to that previously reported in the literature.

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27

Martínez, Elena, José Emilio Pardo, Manuel Álvarez-Ortí, Adrián Rabadán, Arturo Pardo-Giménez e Andrés Alvarruiz. "Substitution of Pork Fat by Emulsified Seed Oils in Fresh Deer Sausage (‘Chorizo’) and Its Impact on the Physical, Nutritional, and Sensory Properties". Foods 12, n. 4 (15 febbraio 2023): 828. http://dx.doi.org/10.3390/foods12040828.

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Abstract (sommario):

Meat products are consumed worldwide, but their high content of saturated fatty acids requires a reformulation of that type of food. In this regard, the objective of this study is to reformulate ‘chorizos’ by replacing the pork fat with emulsified seed oils from seeds (50%, 75%, and 100%). Commercial seeds (chia and poppy) and other seeds considered wastes from the agri-food industry (melon and pumpkin) were evaluated. Physical parameters, nutritional composition, fatty acid profile, and consumer evaluation were analyzed. The reformulated chorizos presented a softer texture but a better fatty acid profile due to their decrease in saturated fatty acids and their increase in linoleic and linolenic fatty acids. Regarding consumer evaluation, all the batches were positively evaluated in all the parameters studied.

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Guo, Yufei, Katharine Sharp, Harvey Blackburn, Brian Richert, Kara Stewart e Stacy M. S. Zuelly. "Processed Meat Characteristics between Commercial Duroc-Sired and Heritage Breed Large Black Pigs". Foods 11, n. 15 (2 agosto 2022): 2310. http://dx.doi.org/10.3390/foods11152310.

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Abstract (sommario):

This study examined the meat processing characteristics between Duroc-sired (DS) and heritage breed Large Black (LB) pigs fed high forage (FIB) or commercial diets (CON). Fifty pigs (DS, n = 25; LB, n = 25) were used in a 2 × 2 factorial design with breed and diet as fixed effects. Processing traits were measured for fresh bellies, bacon slices, and sausage patties. Results showed that DS bellies were longer (p < 0.001) but thinner (p = 0.026). CON bellies were longer (p = 0.005) and thicker (p < 0.001). LB bellies had decreased lean area (p < 0.001) and processing yield (p = 0.001). DS patties were lighter (L*, p < 0.001) and less red (a*, p < 0.001). LB had increased belly firmness (p = 0.053). The CON diet resulted in better particle definition (p = 0.010) in patties as well as a larger slice area (p = 0.048) in bacon slices. A breed × diet interaction was observed for lipid oxidation (p = 0.001). The findings provided novel insight into the comparison between these breeds and diets. While LB pork may have niche market value, the integration of this breed into commercial bacon processing has limitations in composition that need to be further evaluated to improve the product desirability.

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Tangkham, Wannee, e Frederick LeMieux. "The Effects of Replacing Pork Fat with Cold-Pressed Coconut Oil on the Properties of Fresh Sausage". Journal of Food Research 6, n. 6 (18 novembre 2017): 83. http://dx.doi.org/10.5539/jfr.v6n6p83.

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Abstract (sommario):

The effects of substituting coconut oil on the chemical composition, microorganism, and sensory properties of fresh sausages were investigated. This experiment evaluated three (0, 10%, 20%) levels of cold-pressed coconut oil (CPCO) and pork fat stored at 3°C for 14 days. The following treatments: 1) control (20% pork fat: 0% CPCO), 2) 0% pork fat: 20% CPCO and 3) 10% pork fat: 10% CPCO were replicated three times. Treatments were analyzed for pH value, % moisture content, % drip loss, lipid stability (thiobarbituric acid-reactive substances TBARS), aerobic plate counts, Escherichia coli, Staphylococcus aureus, and sensory analysis. The initial moisture content of fresh sausage in this experiment ranged from 63.44 to 65.67%. Fresh sausage with 20% CPCO inhibited the growth of aerobic bacteria and obtained the highest TBARS values (4.25 mg MDA/kg) compared to the control treatment. In addition, fresh sausage (10% pork fat and 10% CPCO) decreased the % drip loss, pH value and obtained the highest overall rating (6.45) of sensory testing (n = 75). No E. coli and S. aureus were found in this study for 14 d at 3°C.

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Gelinski, Jane Mary Lafayette Neves, César Milton Baratto, Micheli Casagrande, Tainara Padilha de Oliveira, Fernanda Megiolaro, Fabiana Andreia S. de Martini Soares, Endler Marcel Borges de Souza, Vânia Aparecida Vicente e Gustavo Graciano Fonseca. "Control of pathogens in fresh pork sausage by inclusion of Lactobacillus sakei BAS0117". Canadian Journal of Microbiology 65, n. 11 (novembre 2019): 831–41. http://dx.doi.org/10.1139/cjm-2019-0136.

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Abstract (sommario):

A pork sausage was produced with low sodium content (1.64%) to which Lactobacillus sakei was added with the aim of developing a meat pork sausage for cooking and having technological, organoleptic, and hygienic advantages. The lactic acid bacteria (LAB) L. sakei, Lactococcus sp., and Pediococcus pentosaceus were submitted to extreme pH, temperature, and NaCl conditions. Lactobacillus sakei was used in pork sausage because of its resistance to different culture conditions and its antimicrobial potential. The food-borne pathogens Listeria monocytogenes Scott A, Enterococcus faecalis, and Staphylococcus aureus were used as indicator microorganisms to evaluate the antimicrobial activity of selected LAB strains. Salmonella enterica serotype Choleraesuis is a common pathogen of pigs. To the raw sausage product containing L. sakei and nonpathogenic endogenous microbiota, we added about >104 and <105 CFU/g of S. enterica serotype Choleraesuis to evaluate the inhibitory potential of L. sakei towards this pathogen. Salmonella Choleraesuis was inhibited in the presence of L. sakei over 7 days of storage of the meat product (about 3.0 log cycles reduction). Lactobacillus sakei significantly increased inhibition when compared with the nonfermented sausage. Thus, L. sakei BAS0117 played an important role as an additional hurdle in the fermented meat pork sausage during storage.

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31

LAMKEY, J. W., F. W. LEAK, W. B. TULEY, D. D. JOHNSON e R. L. WEST. "Assessment of Sodium Lactate Addition to Fresh Pork Sausage". Journal of Food Science 56, n. 1 (gennaio 1991): 220–23. http://dx.doi.org/10.1111/j.1365-2621.1991.tb08015.x.

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32

Guerrero Legarreta, Isabel, W. R. Usborne e G. C. Ashton. "Effect of hot-boned pork on the keeping quality of fresh pork sausage". Meat Science 21, n. 4 (gennaio 1987): 301–17. http://dx.doi.org/10.1016/0309-1740(87)90067-2.

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33

do Amaral, Deborah S., Alejandra Cardelle-Cobas, Bárbara M. S. do Nascimento, Maria J. Monteiro, Marta S. Madruga e Maria Manuela E. Pintado. "Development of a low fat fresh pork sausage based on chitosan with health claims: impact on the quality, functionality and shelf-life". Food & Function 6, n. 8 (2015): 2768–78. http://dx.doi.org/10.1039/c5fo00303b.

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34

ARIÑO, AGUSTIN A., ANTONIO HERRERA, MARIA P. CONCHELLO e CONSUELO PÉREZ. "Hexachlorobenzene Residues in Spanish Meat Products After Cooking, Curing, and Long-term Ripening". Journal of Food Protection 55, n. 11 (1 novembre 1992): 920–23. http://dx.doi.org/10.4315/0362-028x-55.11.920.

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Abstract (sommario):

The effect of cooking, curing, and long-term ripening on hexachlorobenzene (HCB) residues in Spanish pork meat products was investigated. Twenty pork bologna samples were analyzed before and before cooking at 80–82°C for 100 min. Twenty-six fermented dry-cured pork sausage samples were initially analyzed just before filling into natural casing and at 4-, 15-, and 30-d intervals during curing process. Thirty dry-salted cured ham samples were investigated fresh, after dry-salting for 10 d, and after 6 month ripening. HCB residues were quantitated by gas-liquid chromatography with electron capture detector using packed columns. Neither cooking nor curing significantly reduced the HCB content in pork bologna and pork sausage, respectively. Ham processing yielded a significant (p<0.001) reduction of 42% in HCB levels throughout the length of maturation.

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35

Sankomkai, Wanwisa, Wongwarut Boonyanugomol, Kairin Kraisriwattana, Julalak Nutchanon, Kraisorn Boonsam, Sasalux Kaewbutra e Warawan Wongboot. "Characterisation of classical enterotoxins, virulence activity, and antibiotic susceptibility of Staphylococcus aureus isolated from Thai fermented pork sausages, clinical samples, and healthy carriers in northeastern Thailand". Journal of Veterinary Research 64, n. 2 (27 maggio 2020): 289–97. http://dx.doi.org/10.2478/jvetres-2020-0036.

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Abstract (sommario):

AbstractIntroductionContamination by Staphylococcus aureus of food produced from animal sources may have diverse and multifactorial causes that depend on geographical distribution. The goal of this study was to isolate and characterise S. aureus strains from contaminated fermented pork sausage, which is a local food of northeastern Thailand.Material and MethodsS. aureus strains were isolated from local pork sausage, and the presence of classical enterotoxins was determined by PCR and reversed passive latex agglutination. These results were compared with strains derived from hospitalised patients and healthy carriers. Additionally, production of extracellular enzymes and haemolysin, biofilm formation, and antibiotic susceptibility were assessed.ResultsS. aureus was identified in 36 sausage isolates (60%). The strains positive for staphylococcal enterotoxin A were more frequently found in isolates from sausage and healthy carriers than in those from patients. All tested S. aureus strains were positive for DNase, lipase, proteinase, haemolysin, and biofilm formation; notably, strains isolated from food and healthy carriers displayed similar values. Most isolates were resistant to penicillin and ampicillin, while none were to methicillin.ConclusionsThai fermented pork sausages are associated with a high risk of staphylococcal food poisoning, which may be linked to contamination caused by carriers. Dissemination of knowledge regarding best practices in sanitation and hygiene is important in local communities.

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Petchsing, Urairatana, e Margy J. Woodburn. "Staphylococcus aureus and Escherichia coli in nham (Thai-style fermented pork sausage)". International Journal of Food Microbiology 10, n. 3-4 (maggio 1990): 183–92. http://dx.doi.org/10.1016/0168-1605(90)90065-d.

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37

Feldsine, Philip T., Maria T. Falbo-Nelson, David L. Hustead, J. Aaronson, V. Arling, M. Baker, J. Bozzuffi et al. "Substrate Supporting Disc Method for Confirmed Detection of Total Coliforms and E. coli in all Foods: Collaborative Study". Journal of AOAC INTERNATIONAL 76, n. 5 (1 settembre 1993): 988–1005. http://dx.doi.org/10.1093/jaoac/76.5.988.

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Abstract (sommario):

Abstract The Coli Complete® substrate supporting disc (SSD) method for simultaneous confirmed total coliform count and Escherichia coli determination in all foods was compared with AOAC most probable number (MPN) methods, 966.23 and 966.24. Twenty-nine laboratories participated in this collaborative study in which 6 food types were analyzed. Four food types, raw ground beef, pork sausage, raw liquid milk, and nut meats, were naturally contaminated with coliform bacteria. Two foods, dry egg and fresh frozen vegetables, were seeded with coliforms. Three food types, ground beef, raw liquid milk, and pork sausage, were naturally contaminated with E. coli. Although pork sausage was naturally contaminated, the level was very low (<10/50 g); therefore, additional E. coli were inoculated into 1 lot of this food type. Three food types, nut meats, dry egg, and fresh frozen vegetables, were inoculated with E. coli. For naturally contaminated samples, duplicate determinations were made on 3 separate lots for each food type. For inoculated samples, low, medium, and high contamination levels plus uninoculated control samples were examined in duplicate. Data were analyzed separately for total coliform bacteria and for E. coli. Mean log MPN counts were determined by the SSD method and the appropriate AOAC MPN method. Results were then analyzed for repeatability, reproducibility, and mean log MPN statistical equivalence. Results were statistically equivalent for all total coliform levels in all food types except frozen vegetable and raw nut meat uninoculated control samples and 1 lot of pork sausage where the SSD method produced statistically significant greater numbers. For the E. coli determinations, results were statistically equivalent across all samples and all levels for each food type. The SSD method has been adopted first action by AOAC International for confirmed detection of total coliforms and E. coli in all foods.

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Razmaitė, Violeta, Rūta Šveistienė, Virginija Jatkauskienė e Artūras Šiukščius. "Pork Consumption Frequencies, Attitudes and Sensory Acceptance of Traditional Products in Lithuania". Foods 11, n. 20 (20 ottobre 2022): 3292. http://dx.doi.org/10.3390/foods11203292.

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Finding a niche for the wider use of local pigs highlighted the need for information about consumer attitudes regarding pork and traditional products and the acceptability of fatter meat. With the aim to ascertain pork consumption frequency and Lithuanian consumer attitudes towards traditional pork products, as well as acceptability of traditional sausages from the meat of Lithuanian White pigs, a questionnaire-based survey and consumer sensory tests were conducted. A total of 136 meat consumers participated in the study. Respondents reported that they consume fresh or processed pork from 1 to 10 times weekly. Male respondents were more familiar with Lithuanian local pig breeds, while female respondents demonstrated knowledge of pork products. Boomer generation (1946–1964) respondents mostly (χ2 = 29.53, df = 10, p < 0.001) had pork at home compared with the respondents of younger generations. There were no significant differences in the blind sensory acceptance between sausages made in a traditional way and cold-smoked with different quantity of salt and commercial sausages of premium quality, while conventional hot-smoked sausages had lower (p < 0.001) overall acceptance. The highest (p < 0.005 and p < 0.01, respectively) acceptance for salt reduction in traditional sausages was demonstrated by the X generation (1965–1980) consumers compared with older boomer and subsequent Y (1965–1980) generations.

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39

Fred Newman, Coleman. "Evaluation of Selected Local Spices on Sensory Characteristics of Fresh Pork Sausage". International Journal of Nutrition and Food Sciences 7, n. 1 (2018): 5. http://dx.doi.org/10.11648/j.ijnfs.20180701.12.

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40

Pinsirodom, Praphan, Thanawoot Parinyapatthanaboot, Ruchira Taprap e Pensiri Kaewthong. "The in vitro scavenging ability of anthocyanin extracts from roselle calyces against reactive nitrogen species and their potential use for nitrite reduction in meat". Current Research in Nutrition and Food Science Journal 7, n. 2 (20 agosto 2019): 340–49. http://dx.doi.org/10.12944/crnfsj.7.2.04.

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The in vitro scavenging ability of roselle anthocyanin extract (RAE) against reactive nitrogen species (RNS) was compared to anthocyanin extracted from black carrots and red grapes. These anthocyanin samples exhibited concentration and pH dependence on nitrite scavenging activity, with the activity decreasing as pH was increased over the range of 3.0 to 9.0. Concentration dependent activity was also observed for the nitric oxide scavenging and inhibition of peroxynitrite induced oxidation of Evans blue dyes. The potency of RNS scavenging activity for the anthocyanins tested was in the order of grapes > roselle > black carrots. The RAE was then evaluated for its capacity in nitrite reduction in Vienna pork sausage and traditional Thai fermented pork, called Nham. The residual nitrite in Vienna pork sausage treated with 0.3 % RAE at 125 or 250 mg/kg reduced nitrite to 65 and 168 mg/kg respectively, after being stored at 4±1 ๐C for 24 days. The residual nitrite in all Nham samples rapidly decreased around 90 % of the initial nitrite level after 3 days of fermentation at 30±1 ๐C. Overall results show that RAE was a good source of strong reactive nitrogen species scavengers and can potentially be used as a natural nitrite reduction agent in meat products.

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41

BRADFORD, D. D., D. L. HUFFMAN, W. R. EGBERT e W. R. JONES. "Low-Fat Fresh Pork Sausage Patty Stability in Refrigerated Storage with Potassiunn Lactate". Journal of Food Science 58, n. 3 (maggio 1993): 488–91. http://dx.doi.org/10.1111/j.1365-2621.1993.tb04307.x.

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42

OSBURN, W. N., e J. T. KEETON. "Konjac Flour Gel as Fat Substitute in Low-fat Prerigor Fresh Pork Sausage". Journal of Food Science 59, n. 3 (maggio 1994): 484–89. http://dx.doi.org/10.1111/j.1365-2621.1994.tb05543.x.

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43

HUANG, MEI, ROSANA G. MOREIRA e ELSA MURANO. "USE of HYDROSTATIC PRESSIJRE to PRODUCE HIGH QUALITY and SAFE FRESH PORK SAUSAGE". Journal of Food Processing and Preservation 23, n. 4 (ottobre 1999): 265–84. http://dx.doi.org/10.1111/j.1745-4549.1999.tb00385.x.

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44

Visessanguan, Wonnop, Soottawat Benjakul, Atikorn Panya, Chonticha Kittikun e Apinya Assavanig. "Influence of minced pork and rind ratios on physico-chemical and sensory quality of Nham – a Thai fermented pork sausage". Meat Science 69, n. 2 (febbraio 2005): 355–62. http://dx.doi.org/10.1016/j.meatsci.2004.08.006.

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45

BREWER, M. SUSAN, FLOYD MCKEITH, SCOTT E. MARTIN, ANTHONY W. DALLMIER e JACI MEYER. "Sodium Lactate Effects on Shelf-Life, Sensory, and Physical Characteristics of Fresh Pork Sausage". Journal of Food Science 56, n. 5 (settembre 1991): 1176–78. http://dx.doi.org/10.1111/j.1365-2621.1991.tb04727.x.

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46

BRADFORD, D. D., D. L. HUFFMAN, W. R. EGBERT e W. B. MIKEL. "Potassium Lactate Effects on Low-Fat Fresh Pork Sausage Chubs During Simulated Retail Distribution". Journal of Food Science 58, n. 6 (novembre 1993): 1245–48. http://dx.doi.org/10.1111/j.1365-2621.1993.tb06157.x.

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47

Dias, Francesca Silva, Carla Luiza da Silva Ávila e Rosane Freitas Schwan. "In situ Inhibition of Escherichia coli Isolated from Fresh Pork Sausage by Organic Acids". Journal of Food Science 76, n. 9 (20 ottobre 2011): M605—M610. http://dx.doi.org/10.1111/j.1750-3841.2011.02401.x.

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48

Peckman, T., M. Martin, C. Spencer, M. Shane, Z. Callahan, B. Wiegand e T. A. Wilmoth. "Reduced objective color in fresh ground pork and pork sausage product from barrows subjected to in utero heat stress". Meat Science 101 (marzo 2015): 136–37. http://dx.doi.org/10.1016/j.meatsci.2014.09.088.

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49

Luxananil, Plearnpis, Ruangurai Promchai, Srianant Wanasen, Sanit Kamdee, Preenapa Thepkasikul, Vethachai Plengvidhya, Wonnop Visessanguan e Ruud Valyasevi. "Monitoring Lactobacillus plantarum BCC 9546 starter culture during fermentation of Nham, a traditional Thai pork sausage". International Journal of Food Microbiology 129, n. 3 (febbraio 2009): 312–15. http://dx.doi.org/10.1016/j.ijfoodmicro.2008.12.011.

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50

WANOUS, MICHAEL P., DENNIS G. OLSON e ALLEN A. KRAFT. "Oxidative Effects of Meat Grinder Wear on Lipids and Myoglobin in Commercial Fresh Pork Sausage". Journal of Food Science 54, n. 3 (maggio 1989): 545–48. http://dx.doi.org/10.1111/j.1365-2621.1989.tb04646.x.

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