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Статті в журналах з теми "Post harvest contamination"
Waliyar, F., M. Osiru, B. R. Ntare, K. Vijay Krishna Kumar, H. Sudini, A. Traore, and B. Diarra. "Post-harvest management of aflatoxin contamination in groundnut." World Mycotoxin Journal 8, no. 2 (January 1, 2015): 245–52. http://dx.doi.org/10.3920/wmj2014.1766.
Повний текст джерелаNdemera, M., S. Landschoot, M. De Boevre, L. K. Nyanga, and S. De Saeger. "Effect of agronomic practices and weather conditions on mycotoxins in maize: a case study of subsistence farming households in Zimbabwe." World Mycotoxin Journal 11, no. 3 (September 18, 2018): 421–36. http://dx.doi.org/10.3920/wmj2017.2227.
Повний текст джерелаChimbaza, M., H. Kankwamba, A. M. Mwangwela, and W. Kamthunzi. "Post-harvest groundnut aflatoxin management among smallholder farmers in Malawi." World Mycotoxin Journal 13, no. 1 (February 6, 2020): 37–43. http://dx.doi.org/10.3920/wmj2018.2409.
Повний текст джерелаPandey, Manish K., Rakesh Kumar, Arun K. Pandey, Pooja Soni, Sunil S. Gangurde, Hari K. Sudini, Jake C. Fountain, et al. "Mitigating Aflatoxin Contamination in Groundnut through A Combination of Genetic Resistance and Post-Harvest Management Practices." Toxins 11, no. 6 (June 3, 2019): 315. http://dx.doi.org/10.3390/toxins11060315.
Повний текст джерелаGummert, M., C. Balingbing, G. Barry, and L. Estevez. "Management options, technologies and strategies for minimised mycotoxin contamination of rice." World Mycotoxin Journal 2, no. 2 (May 1, 2009): 151–59. http://dx.doi.org/10.3920/wmj2008.1131.
Повний текст джерелаTanko, Hakibu, Danielle Julie Carrier, Lijun Duan, and Ed Clausen. "Pre- and post-harvest processing of medicinal plants." Plant Genetic Resources 3, no. 2 (August 2005): 304–13. http://dx.doi.org/10.1079/pgr200569.
Повний текст джерелаMohamed, Somaya, Shadia Abd-El-Aziz, and Azza Naffa. "Anti-Contamination of Pathogenic Fungi on Post-Harvest Wheat Grains." Egyptian Journal of Phytopathology 42, no. 2 (December 31, 2014): 187–96. http://dx.doi.org/10.21608/ejp.2014.95593.
Повний текст джерелаMagoke, Krockenberger, Bryden, Alders, Mramba, and Maulaga. "Aflatoxin Contamination of Village Grains in Central Tanzania: Dietary and Agricultural Practices in Relation to Contamination and Exposure Risk." Proceedings 36, no. 1 (December 30, 2019): 20. http://dx.doi.org/10.3390/proceedings2019036020.
Повний текст джерелаBist, Naresh Singh, and Pratibha Bist. "ROLE OF MICROORGANISMS IN POST-HARVEST LOSS OF AGRICULTURAL PRODUCTS: A REVIEW." Sustainability in Food and Agriculture 2, no. 1 (November 18, 2020): 01–04. http://dx.doi.org/10.26480/sfna.01.2021.01.04.
Повний текст джерелаPeles, Ferenc, Péter Sipos, Szilvia Kovács, Zoltán Győri, István Pócsi, and Tünde Pusztahelyi. "Biological Control and Mitigation of Aflatoxin Contamination in Commodities." Toxins 13, no. 2 (February 1, 2021): 104. http://dx.doi.org/10.3390/toxins13020104.
Повний текст джерелаДисертації з теми "Post harvest contamination"
Saucedo-Alderete, Raúl O. "Post-harvest spray treatments to reduce Salmonella contamination on cantaloupe surfaces." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/51831.
Повний текст джерелаPh. D.
Caldwell, Lucius. "The Use of Vinegar Vapor and Post-Harvest Biological Control to Reduce Patulin in Apple Cider." Fogler Library, University of Maine, 2009. http://www.library.umaine.edu/theses/pdf/CaldwellL2009.pdf.
Повний текст джерелаGarbaba, Chemeda Abedeta [Verfasser]. "Development of Maize Post-harvest Loss Reduction Mechanism Owing to Mycotoxin-producing Fungi Contamination Along Agro-ecology and Supply Chain in Southwestern Ethiopia / Chemeda Abedeta Garbaba." Kassel : Universitätsbibliothek Kassel, 2019. http://d-nb.info/1177740249/34.
Повний текст джерелаTeixeira, Ricardo Rodrigues. "Avaliação de processos e tarefas em uma unidade movel para beneficiamento de tomate de mesa e alface." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/256966.
Повний текст джерелаTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agricola
Made available in DSpace on 2018-08-13T10:50:42Z (GMT). No. of bitstreams: 1 Teixeira_RicardoRodrigues.pdf: 2062039 bytes, checksum: a4971055a27800f110bd3f6cbcdef9ae (MD5) Previous issue date: 2009
Resumo: A cultura do tomateiro tem grande importância econômica e alimentar no país. A partir do momento da colheita ocorrem perdas cumulativas de qualidade em decorrência de fatores agroclimáticos como alta temperatura e variações constantes na umidade relativa do ar, além dos fatores relacionados ao manuseio pós-colheita, como danos mecânicos, local de manuseio e equipamentos inadequados para sanitização, classificação e embalagem, treinamento de colhedores e beneficiadores, além do armazenamento e transporte precários. Através de estudos das diversas tarefas que são necessárias a partir do momento da colheita dos tomates, foram analisados os processos para gerar subsídios para utilização de uma unidade móvel de beneficiamento de tomates de mesa com intuito de diminuir a perda pós-colheita, tendo como conseqüência um menor tempo de exposição do produto a condições adversas, mantendo a qualidade dos mesmos e consequentemente, aumentado sua vida de prateleira. A unidade móvel pode ser utilizada não somente para diminuição das perdas e manutenção da qualidade, mas também para melhorar o ambiente de trabalho, proporcionando uma infra-estrutura de apoio aos trabalhadores no campo.
Abstract: The tomato crop has economic and alimentary importance in Brazil. Since the harvesting the losses begins and goes cumulatively decreasing the quality of the product because, at first place, of the climate factors such as temperature, air humidity variation and at second, after harvested, because of the handling done during process from the field to the market, which means: selection, warehousing, cleaning, package, transportation and selling.. By studding the tasks necessary after the tomato harvesting, many information were analyzed given subsidies to use an itinerant unity to do the handling process of in nature tomato in order to avoid post harvest losses and, in consequence, letting the product less exposed to adverse conditions that occurs in the post harvest, kipping the quality and increasing the shelf life. In addition, the itinerant unity gives better work conditions as support for the field work too.
Universidade Estadual de Campi
Tecnologia Pós-Colheita
Doutor em Engenharia Agrícola
Souza, Franciane Colares 1979. "Utilização combinada de radiação UV-C e atmosfera modificada para conservação do figo após a colheita." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/256804.
Повний текст джерелаTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola
Made available in DSpace on 2018-08-21T10:17:09Z (GMT). No. of bitstreams: 1 Souza_FrancianeColares_D.pdf: 2902759 bytes, checksum: 9132390d28bc3d61c99fb9c0a0385692 (MD5) Previous issue date: 2012
Resumo: O manejo inadequado é um fatores que afetam a qualidade de produtos agrícolas, conduzindo a perdas devido aos danos mecânicos e o desenvolvimento microbiano, agravado pelo armazenamento inadequado. No caso do figo, devido à limitada proteção oferecida pela epiderme e presença do ostíolo, o beneficiamento utilizando água não é recomendado, trazendo em pauta ações capazes de promover a desinfecção superficial sem afetar a qualidade do produto. Dentre os métodos físicos mais promissores para conservação de frutas estão a refrigeração, radiação ultravioleta (UV-C) e atmosfera modificada. Por outro lado, a utilização de métodos combinados apresenta vantagens devido sua ação sinérgica e complementar. Neste sentido, acredita-se que o uso combinado de métodos físicos pode trazer benefícios para a conservação de figos, principalmente voltada para o mercado externo, auxiliando na manutenção da qualidade do produto e redução da carga microbiana. Este trabalho teve como objetivo avaliar o desempenho da combinação dos tratamentos de atmosfera modificada passiva, atmosfera enriquecida com 100% de CO2 e radiação UV-C na conservação do figo 'Roxo de Valinhos'. As principais etapas foram as seguintes: (1) isolamento dos fungos causadores de podridao em figos 'Roxo de Valinhos' e teste de patogenicidade, utilizando métodos de inoculação de deposição de suspensão de esporos na epiderme do figo, com e sem perfuração, e com deposição sobre papel filtro, avaliando-se a incidência e a severidade dos patógenos com cálculo do Índice de Doença (ID); (2) identificação do nível de tolerância do figo à exposição da radiação UV-C de 0,00 kJ.m-2; 0,70 kJ.m-2; 1,32 kJ.m-2; 2,64 kJ.m-2 e 4,00 kJ.m-2, armazenados à 10°C e 20°C, utilizando como parâmetro de qualidade a aparência visual; (3) avaliação do efeito da radiação UV-C no crescimento in vitro e in vivo dos fungos Rhizopus stolonifer, Lasiodiplodia theobromae e Alternaria alternata, utilizando-se valores de energia de radiação iguais a 0,00 kJ.m-2; 2,64 kJ.m-2; 4,00 kJ.m-2; 8,00 kJ.m-2 e 16,00 kJ.m-2 para os ensaios in vitro e iguais a 0,00 kJ.m-2; 0,70 kJ.m-2; 1,32 kJ.m-2 e 2,64 kJ.m-2 para os ensaios in vivo, a 10ºC e 20ºC; (4) avaliação de desempenho do filme de polipropileno (PP) com espessuras de 25'mi'm, 30'mi'm e 50'mi'm na manutenção da qualidade de figos, avaliada pelos parâmetros perda de massa (PM), sólidos solúveis (SS), acidez titulável (AT), aparência visual e redução da incidência de podridão; (5) avaliação do efeito de atmosfera com 100% de CO2 por 4h, 8h e 12h, à 10ºC e 20ºC, na manutenção da qualidade e diminuição da carga microbiana no figo, avaliada pelos índices PM, SS, AT e aparência visual e (6) combinação do filme de PP de 30'mi'm com radiação UV-C de 1,32 kJ.m-2 e com a exposição à atmosfera com 100% de CO2 durante 4h. Os resultados evidenciaram que a utilização isolada do filme de PP de 30'mi'm, radiação UV-C e exposição à 100% de CO2 mostrou-se eficiente na manutenção da qualidade das frutas, sobretudo quando se utiliza o armazenamento refrigerado. O uso combinado do filme de PP de 30'mi'm com atmosfera modificada com 100% de CO2, representa uma alternativa para o armazenamento do figo, mesmo quando não se utiliza refrigeração, em função da redução da carga microbiana e manutenção da qualidade
Abstract: The main factor affecting quality of agricultural products is the inadequate management, leading to considerable losses due to mechanical damage and fungal contamination, aggravated by improper storage. The fig vulnerability is amplified due to the presence of the ostiole, a peculiar fig orifice, acting as an open door to contamination. Since aqueous sanitization is not recomended, other methods should be searched to promote surface sanitization without affecting the quality of the product. Some promising methods are cooling, ultraviolet radiation (UV-C) and modified atmosphere. A combined method also has advantages because of their synergistic effect on inhibiting microbial growth, and thus maintaining the nutritional and visual qualities of the product. Moreover, the combined use of physical methods, to improve the fig shelf life, potentially can increase business opportunities, specially in the international market. The main objective of this work was to evaluate the performance of the combination of modified atmosphere and UV-C radiation on 'Roxo de Valinhos' fig conservation. To attain this general goal several intermediate steps were performed: (1) fungi rot identification and associated pathogenicity using inoculation by deposition on filter paper to evaluate disease incidence and contamination severity; (2) UV-C radiation fig tolerance identification using energy levels of 0,00 kJ.m-2; 0,70 kJ.m-2; 1,32 kJ.m-2; 2,64 kJ.m-2 and 4,00 kJ.m-2, followed by storage at 10ºC and 20ºC; (3) evaluation of the effect of UV-C radiation on Rhizopus stolonifer, Lasiodiplodia theobromae and Alternaria alternata fungi growth, for in vitro and in vivo tests, using energy irradiation of 0,00 kJ.m-2; 2,64 kJ.m-2; 4,00 kJ.m-2; 8,00 kJ.m-2 and 16,00 kJ.m-2 for the in vitro test, and 0,00 kJ.m-2; 0,70 kJ.m-2; 1,32 kJ.m-2 e 2,64 kJ.m-2 for the in vivo test, at 10ºC and 20ºC; (4) evaluation of the polypropylene (PP) in maintaining the quality, using film thicknesses of 25'mi'm, 30'mi'm and 50'mi'm; (5) evaluation of the fig exposition to 100% CO2 modified atmosphere for 4h, 8h and 12h, followed by storage at 10ºC and 20ºC, in maintaining quality and keeping the microbiological load low and (6) evaluation of the combined use of 30'mi'm PP film with UV-C irradiation of 1,32 kJ.m-2 and 100% CO2 modified atmosphere during 4h. Results have shown that the use of the 30'mi'm PP film, radiation UV-C of 1,32 kJ.m-2 and exposition to 100% of CO2 for 4h was effective in maintaining the quality of the fruits, specially when refrigerated storage is employed. It was concluded that combined use of the 30'mi'm PP film with high CO2 concentration represents an alternative to non refrigerated fig storage, due to the reduction of the microbial load
Doutorado
Tecnologia Pós-Colheita
Doutora em Engenharia Agrícola
Mylona, Kalliopi. "Fusarium species in grains : dry matter losses, mycotoxin contamination and control strategies using ozone and chemical compounds." Thesis, Cranfield University, 2012. http://dspace.lib.cranfield.ac.uk/handle/1826/7876.
Повний текст джерелаNoviyanti, Fnu. "Shiga-toxin Escherichia coli contamination in cattle post harvest." Thesis, 2018. http://hdl.handle.net/2097/38836.
Повний текст джерелаDepartment of Diagnostic Medicine and Pathobiology
Robert Larson
Among animal products consumed by humans, ground beef has been reported as one of the most common vehicles for STEC outbreaks in humans. In the United States, cull dairy cattle contribute as one of the primary sources for ground beef. The objective of this study was to determine the prevalence and concentration of 7 Shiga toxin-producing Escherichia coli serogroups (STEC-7; O26, O103, O111, O121, O45, O145, and O157) and associated virulence genes (Shiga toxin 1 and 2 (stx1, stx2), intimin (eae), and enterohomolysin (ehxA)) in the feces of cull dairy cattle processed in commercial slaughter plants during summer months. Fecal swab samples (n=183) were collected from three processing plants, one in California and two in Pennsylvania. At each plant at least 60 to 65 cattle were selected, and the samples were obtained by swabbing the mucosal surface of the recto-anal junction using a sterile cotton-tipped applicator. To determine prevalence, all samples were subjected to culture-based detection methods that included enrichment, serogroup-specific immunomagnetic separation and plating on selective media, followed by polymerase chain reaction for serogroup confirmation and virulence gene detection. Pre-enriched fecal samples were subjected to spiral plating to determine the concentration of STEC-7. A sample was considered STEC positive if a recovered isolate harbored one of the 7 target O genes, stx1, and/or stx2. Of the 183 fecal swab samples collected, 23 (12.6%) harbored at least one O157, O26, O103, or O111 serogroup, with their associated virulence genes. However, none of the fecal samples from this cattle population carried STEC at high-levels (>10⁴ CFU/g). This study has provided important information on STEC-7 prevalence from dairy cattle that enter the ground beef processing system. However, there is still a need to determine prevalence and concentration of STEC in cull dairy cattle during winter months as well as in other sources of ground beef production (e.g., imported lean beef, cull beef).
Villarreal, Silva Mariana. "Simulation of Contamination Through the Post-Harvest Environment Using Surrogate Organisms." Thesis, 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8542.
Повний текст джерелаChae, Minjung. "Low-temperature post-harvest processing for reducing Vibrio parahaemolyticus and Vibrio vulnificus in raw oysters." Thesis, 2007. http://hdl.handle.net/1957/5705.
Повний текст джерелаGraduation date: 2008
Karmakar, Kapudeep. "Elucidating the mechanism of interaction of Salmonella with plants." Thesis, 2018. https://etd.iisc.ac.in/handle/2005/4730.
Повний текст джерелаЧастини книг з теми "Post harvest contamination"
Kodandaram, M. H., Y. Bijen kumar, Kaushik Banerjee, A. B. Rai, and B. Singh. "Pre- and Post-Harvest Pesticide Contamination Management for Production of Quality Vegetables." In Advances in Postharvest Technologies of Vegetable Crops, 443–83. Waretown, NJ : Apple Academic Press, 2018. | Series: Postharvest biology and technology: Apple Academic Press, 2018. http://dx.doi.org/10.1201/9781315161020-17.
Повний текст джерелаRicke, S. C. "Microbial ecology of eggs: a focus onSalmonellaand microbial contamination in post-harvest table shell egg production." In Quantitative Microbiology in Food Processing, 416–41. Chichester, UK: John Wiley & Sons, Ltd, 2016. http://dx.doi.org/10.1002/9781118823071.ch21.
Повний текст джерелаDubey, N. K., Priyanka Singh, Bhanu Prakash, and Prashant K. Mishra. "Plant Chemicals in Post Harvest Technology for Management of Fungal, Mycotoxin and Insect Contamination of Food Commodities." In Plant Defence: Biological Control, 195–208. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-1933-0_8.
Повний текст джерелаDubey, Nawal Kishore, Prashant Kumar Mishra, Akash Kedia, and Bhanu Prakash. "Fungal and Mycotoxin Contamination of Herbal Raw Materials and Prospects of Higher Plant Products as Plant-Based Preservatives During Post-Harvest Processing." In Microbial Diversity and Biotechnology in Food Security, 495–504. New Delhi: Springer India, 2014. http://dx.doi.org/10.1007/978-81-322-1801-2_45.
Повний текст джерелаVishunavat, Karuna, Kuppusami Prabakar, and Theerthagiri Anand. "Seed Health: Testing and Management." In Seed Science and Technology, 335–64. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-5888-5_14.
Повний текст джерелаCamacho Martinez, Silvia Vanessa, Mahdiyeh Hasani, Lara Jane Warriner, and Keith Warriner. "Advances in sanitising techniques and their assessment for assuring the safety of fresh produce." In Advances in ensuring the microbiological safety of fresh produce, 245–80. Burleigh Dodds Science Publishing, 2023. http://dx.doi.org/10.19103/as.2023.0121.16.
Повний текст джерелаWaithaka Ng’ang’a, Zacharia, and Eric Niyonshuti. "Animal Feeds Mycotoxins and Risk Management." In Mycotoxins and Food Safety - Recent Advances [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.102010.
Повний текст джерелаMagan, Naresh, Esther Garcia-Cela, Carol Verheecke-Vaessen, and Angel Medina. "Advances in post-harvest detection and control of fungal contamination of cereals." In Advances in postharvest management of cereals and grains, 339–62. Burleigh Dodds Science Publishing, 2020. http://dx.doi.org/10.19103/as.2020.0072.14.
Повний текст джерела"Post-harvest strategies to reduce enteric bacteria contamination of vegetable, nut and fruit products." In Handbook of Organic Food Safety and Quality. CRC Press, 2007. http://dx.doi.org/10.1201/9781439824566.pt4.
Повний текст джерелаJohannessen, Gro S. "Post-harvest strategies to reduce enteric bacteria contamination of vegetable, nut and fruit products." In Handbook of Organic Food Safety and Quality, 433–53. Elsevier, 2007. http://dx.doi.org/10.1533/9781845693411.4.433.
Повний текст джерелаТези доповідей конференцій з теми "Post harvest contamination"
Kutlakhmedov, Yu, V. Davydchyk, A. Jouve, and N. Grytsiuk. "Evaluation the Efficacy of the Turf-Cutter Soil Decontamination Technology." In ASME 2001 8th International Conference on Radioactive Waste Management and Environmental Remediation. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/icem2001-1167.
Повний текст джерела