Dissertations / Theses on the topic 'Alimenti nuovi'
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Accorsi, Antonio <1967>. "Nuovi assetti normativi in tema di igiene degli alimenti." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/1169/1/accorsi_antonio_tesi.pdf.pdf.
Full textAccorsi, Antonio <1967>. "Nuovi assetti normativi in tema di igiene degli alimenti." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/1169/.
Full textBonsi, Barbara <1984>. "Nuovi ingredienti funzionali per l'applicazione in campo alimentare." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amsdottorato.unibo.it/4755/1/bonsi_barbara_tesi.pdf.
Full textBonsi, Barbara <1984>. "Nuovi ingredienti funzionali per l'applicazione in campo alimentare." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amsdottorato.unibo.it/4755/.
Full textROMANAZZO, DANIELA. "Nuovi metodi immunochimici di screening per la sicurezza ed il controllo degli alimenti." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2009. http://hdl.handle.net/2108/202463.
Full textPAKROO, SHADI. "Valutazione tecnologica e probiotica mediante approcci fisiologici e molecolari di nuovi batteri lattici isolati da alimenti fermentati tradizionali." Doctoral thesis, Università degli studi di Padova, 2022. http://hdl.handle.net/11577/3445850.
Full textFirstly, we have studied the microbial diversity and nutritional properties of “Yellow Curd” (Kashk zard) a traditional Persian fermented food, using classical microbiology approaches and 16S rRNA metabarcoding analysis. The metagenomics analysis revealed that lactic acid bacteria, particularly the genera Lactobacillus, Pediococcus and Streptococcus, were dominant in Yellow Curd. In addition, isolation, characterization and identification of new LAB with technological potential and probiotic properties, as well as functional foods preparation and characterization, have been carried out. The outcomes revealed that Pediococcus acidilactici strains IRZ12A and IRZ12B isolated from traditional Persian fermented food were safe and endowed with probiotic properties such as resistance to simulated gastrointestinal conditions and hypocholesterolemic effect. The complete genome of this promising P. acidilactici IRZ12B strain with the best cholesterol-lowering effect was sequenced, and the in-silico analysis evidenced the absence of plasmids, transmissible antibiotic resistance genes and virulence factors. Therefore, we tried to use P. acidilactici IRZ12B and three officinal plants, namely Malva, Calendula and Echinacea, for fermentation trials and consequently, possible functional food production. The fermented herbs with P. acidilactici IRZ12B were used to study their functionality on healthy and cancer cells. Results showed that fermented herbs with the probiotic strain did not have any cytotoxic effect on healthy human intestinal cells (differentiated Caco-2); however, they could significantly reduce cell viability on breast cancer cells (MCF-7). Secondly, some beneficial strains did not tolerate the storage condition and the human gastrointestinal passage. In this thesis, for the first time, we evaluated the use of 2′-fucosyllactose molecule in microencapsulation, and compared it with other known molecules, such as gelatin and inulin. Microcapsules, obtained by the extrusion technique, were evaluated in terms of encapsulation efficiency, storage stability, gastrointestinal condition resistance, and cell release kinetics. The alginate-based microcapsules showed interesting features, including the good capability to protect bacterial cells from harsh simulated gastrointestinal conditions. Compared to other molecules used in microencapsulation together with alginate, such as gelatin and inulin, 2’-fucosyllactose evidenced an extremely quick and abundant release of bacterial cells from the capsules inside a simulated intestinal fluid. Lastly, we have studied the technological properties of LAB isolated from a traditional fermented Indian food (Dahi). As a result, strain Limosilactobacillus fermentum ING8 was found to possess a safe status with very interesting technological properties, such as galactose utilization, antimicrobial activity, exopolysaccharide production and survivability to long-term storage at refrigeration temperature. The complete genome evaluation of this promising strain confirmed the absence of possible deleterious elements, such as acquired antibiotic resistance genes, virulence genes, or hemolytic-related genes. However, all structural genes related to galactose operon and EPS production have been detected.
TORRE, GIULIA. "La disciplina europea sui Novel Foods tra innovazione e trasparenza." Doctoral thesis, Università Cattolica del Sacro Cuore, 2022. http://hdl.handle.net/10280/129696.
Full textThe relationship between scientific innovation and legal innovation finds in the European regulation on novel foods peculiar profiles related to the market access of innovative foods, potentially suitable to contribute to the achievement of sustainability and food security objectives as identified, in the international context, by the United Nations 2030 Agenda and subsequently declined, within the European Union, by the European Green Deal and the Farm to Fork Strategy. Through a reconstruction of the changes that have affected the European regulation on the subject, the research work illustrates and discusses the issues that the application of Reg. (EU) 2015/2283 on novel foods poses in the food chain, with particular attention to the role played by the principles of innovation, precaution and transparency in the pre-market authorisation procedure dictated by the European legislator. The legal analysis explores, in particular, the guarantees of transparency provided in the risk assessment procedure, as amended by the reform introduced by Reg. (EU) 2019/1381, questioning the suitability of the legislation to meet the challenges that the production and marketing of novel foods pose in the European agri-food market.
LA, PORTA BEATRICE. "NOVEL FOOD: LA NORMATIVA DELL'UNIONE EUROPEA TRA SICUREZZA ALIMENTARE, SFIDE DELLA TECNICA E TUTELA DELL'AFFIDAMENTO." Doctoral thesis, Università Cattolica del Sacro Cuore, 2019. http://hdl.handle.net/10280/57797.
Full textThe last decades' lawmaking in the food field highlights the increasing attention towards science and got lawyers rethinking about the link existing between law and science. In a progression of the European legislator's sensitivity to guarantee the market as well as the food consumers and their safety, the EU legislation on novel foods has tried to balance food innovation and the multiple needs of operators and consumers who require products with increasingly more defined characteristics and suitable to satisfy a wide range of preferences. If "the capacity of the technique is the effective power to achieve goals and to satisfy needs indefinitely" is easy to understand how the novel food turns out to be a paradigmatic case of an encounter between science, market needs and juridical rules. Furthermore, the increasing interest in the food sector raises the question of which methods of regulation of scientific innovations apply.
LA, PORTA BEATRICE. "NOVEL FOOD: LA NORMATIVA DELL'UNIONE EUROPEA TRA SICUREZZA ALIMENTARE, SFIDE DELLA TECNICA E TUTELA DELL'AFFIDAMENTO." Doctoral thesis, Università Cattolica del Sacro Cuore, 2019. http://hdl.handle.net/10280/57797.
Full textThe last decades' lawmaking in the food field highlights the increasing attention towards science and got lawyers rethinking about the link existing between law and science. In a progression of the European legislator's sensitivity to guarantee the market as well as the food consumers and their safety, the EU legislation on novel foods has tried to balance food innovation and the multiple needs of operators and consumers who require products with increasingly more defined characteristics and suitable to satisfy a wide range of preferences. If "the capacity of the technique is the effective power to achieve goals and to satisfy needs indefinitely" is easy to understand how the novel food turns out to be a paradigmatic case of an encounter between science, market needs and juridical rules. Furthermore, the increasing interest in the food sector raises the question of which methods of regulation of scientific innovations apply.
Prataviera, Alberto <1986>. "Nuovi strumenti di valorizzazione sostenibile dei prodotti agro-alimentari." Master's Degree Thesis, Università Ca' Foscari Venezia, 2012. http://hdl.handle.net/10579/1647.
Full textBONETTI, Gianpiero. "Studio di Urtica dioica come nuovo alimento funzionale." Doctoral thesis, Università degli studi di Ferrara, 2016. http://hdl.handle.net/11392/2403484.
Full textWild edible plants had been a crucial source of food for people, especially in rural areas, not only in the distant past but also during more recent times of war. The term stinging nettle is referred to the collection of herbaceous plants belong to the genus Urtica L., of the Urticaceae family, growing throughout the temperate regions. Perennial Urtica dioica is widespread in Europe, North Africa, Asia, North and South America and is mainly known and studied in the textile and phytotherapic industry [1]. Stinging nettle could represents a valuable biomass source for several natural products, with most promising application in the food/feed, medicinal, cosmetic and fibre sectors. The presence of several active compounds in stinging nettle give scientific justification to traditional folk uses of the plant. In addition, agronomic characteristics make the nettle a cultivation with low environmental impact and potentially suitable for areas currently uncultivated [2]. The aim of the research project is to evaluate the plant Urtica dioica, a wild edible green, as new functional food and ingredient for the preparation of new functional foods. Functional foods are natural or processed foods commonly present in the diet, which contain bioactive compounds able to improve health status or reduce the risk of chronic disease [3,4]. The nutritional characterization of wild nettle leaves of Emilia Romagna region has highlighted the good content of protein and of calcium, magnesium, iron and manganese, essential elements about different physiological functions. The study of antioxidant properties has shown the influence of the geographical area of origin, indicating a significant impact of the vegetative stage on the biosynthesis and accumulation of compounds with antioxidant activity. The use of stinging nettle in the food industry necessarily involves standardization of the raw material from the nutritional quality and food security points of view. It is not feasible the use of spontaneous growth plants, but it is must be provided the development of cultivation protocols. In cooperation with the Research Centre for Industrial Crops (CRA-CIN) of Rovigo was created an experimental plot for the study of agronomic growing conditions of the two most common varieties of nettle in Italy, U. dioica and U. urens. The agronomic assessment of the two varieties showed that U. dioica 2 possess the best features to be proposed at cultivation level in order of the exploitation of the aerial parts for food purposes. Two classes of secondary metabolites with nutraceutical properties were studied in the leaves of U. dioica: the characterization and quantification of major phenolic compounds and carotenoids were carried out in order to assess the influence of vegetative stages on the balsamic period. Major phenolic compounds identified in the leaves of U. dioica belong to the classes of hydroxycinnamic acids (chlorogenic acid and caffeoylmalic acid) and flavonols (rutin, isoquercetin, kaempferol 3-rutinoside and isorhamnetin 3-rutinoside). Among these, chlorogenic and caffeoylmalic acids and rutin represent the 90% of the total content. As regard the carotenoids contents, lutein and β-carotene were identified in the leaves of U. dioica. The flowering stage was the best time for the collection of the leaves to obtain a raw material rich in polyphenols and carotenoids, which may give functional properties to foods product. Recently the nettle was reintroduced in the food industry, in particular as innovative ingredient in the production of special pasta. Pasta is a staple food in many countries and is a good source of complex carbohydrates and a moderate source of protein and vitamins [5]. It is also considered an adequate vehicle for food supplementation with minerals, proteins, and many other valuable healthy components [5–7]. The study of nettle utilization in food industry was carried out with the aim to evaluate the conveyance of nutrients from U. dioica leaves to pasta, analysing their effect on antioxidant activity, polyphenols and carotenoids content, as well as the cooking impact on these compounds. The results highlight how using nettle the final product shows an increase in total protein amount and total mineral fraction. Pasta fortified with nettle had a significantly increased content of calcium, magnesium, iron and manganese. Moreover, in fortified products there is an increase of the total polyphenol content and antioxidant capacity. The major phenolics compound (chlorogenic acid, caffeoylmalic acid and rutin) are effectively maintained in the final product from which are traceable and quantifiable; these molecules are not present in non-fortified pasta, so are unique constituents of pasta enriched with nettle. Lutein and β-carotene are carotenoids present in nettle leaves, however, are also detectable in the semolina, the main constituent of pasta, and in the egg, ingredient for the production of dry and fresh pasta at the industrial level. The fortification with nettle cause an increase in the amount of both lutein and β-carotene in the finished product. The study of the influence of the cooking on the content of phenolic compounds and carotenoids led to determine the quantities really ingested following the enriched-pasta consumption. The loss of phenolic compounds caused by cooking was inversely proportional to the percentage of bound forms, typical of each phenols. 3 Traditional pasta is a rather poor source of physiologically active compounds; thus, fortification of pasta with phenol-rich ingredients, like nettle leaves, is a technological treatment which could be used to increase the healthy quality of this product and enrich the diet with important minerals and compounds with potential beneficial effects such carotenoids and phenolic compounds. The identification and quantification of bioactive compounds is not sufficient to have a clear nutritional evaluation of food products: the in vivo effects depend not only on their concentrations in the food matrices, but also on their bioaccessibility and bioavailability after ingestion. Bioavailability is defined as the proportion of an antioxidant that is digested, absorbed, and utilized in normal metabolism; bioaccessibility is a commonly used term defined as the amount of an ingested nutrient that is available for absorption in the gut after digestion. In these terms, the bioavailability strictly depends on the bioaccessibility [8,9]. The bioaccessibility of phenolic compounds and carotenoids of nettle leaves was evaluated by developing and applying an in vitro dynamic gastrointestinal model in order to simulate the intake and the digestion of some nettle-based food products. Transepithelial transport efficiencies at the level of small intestine was investigated using Caco-2 cells monolayer model. This part of the work was performed at the "Laboratory of Food Chemistry and Toxicology" of the Faculty of Pharmacy, University of Valencia. Chlorogenic acid, caffeoylmalic acid and rutin are bioaccessible during all phases of digestion with maximum values at the end of duodenal phase: chemical structure of each compound and the type of food matrix have a significant impact on kinetics of release and solubilisation in the gastrointestinal fluids. The study of the duodenal transepithelial transport highlights the general low bioavailability of nettle phenols with the consequence reaching of these compounds in the large intestine. The role of colonic microflora metabolism needs to be fully examined in order to evaluate the impact on phenolic rich diets on diversity and functionality of large intestine microbiota. The physiological mechanisms underlying the potential beneficial effects of polyphenols are subject of many studies [10–12]. Moreover, the impact of these molecules directly in the gastrointestinal tract is of increasing interest [13]. For these reasons, in this research project was also investigated the radical scavenging activity of simulated gastrointestinal fluid against superoxide anion radical using the Photochem® system. The results confirm that the assumption of foods rich in polyphenols contributes to create an antioxidant environment that could counteracting postprandial oxidative stress in the entire gastrointestinal tract, with potentially health benefits. The intake of pasta enriched with dried nettle leaves instead of traditional pasta cause a significant increasing of antioxidant capacity of gastrointestinal lumen from stomach to large intestine. 4 Lutein and β-carotene, showed less bioaccessibility compare to phenolic compounds, due to them lower solubility in the gastrointestinal fluids. In nettle-enriched pasta there is an increase of the content of carotenoids, however, the fiber fraction due to the presence of nettle decreases the bioaccessibility; this is probably due to the presence of the fibers that obstruct the formation of micelles in the small intestine. Nettle (U. dioica) is a wild plant that could be introduce at the level of cultivation with potential multiple use. Regarding the food industry, leaves possess an important nutritional value that could be exploited in the development of foods with functional properties and health benefits.
Maccaferri, Francesco. "Nuovi copolimeri triblocco biodegradabili a base di PLA per imballaggi alimentari." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8617/.
Full textSpano', Giulia <1992>. "Private label e nuovi trend: lo sviluppo di integratori alimentari Pam Panorama." Master's Degree Thesis, Università Ca' Foscari Venezia, 2018. http://hdl.handle.net/10579/12801.
Full textFERIOLI, Dino Giuliano. "Tracciabilità delle provenienze e valorizzazione dei prodotti alimentari attraverso nuovi sistemi di caratterizzazione geochimica." Doctoral thesis, Università degli studi di Ferrara, 2010. http://hdl.handle.net/11392/2389175.
Full textZanoni, Simona <1979>. "Metabolismo di oligosaccaridi prebiotici in Bifidobacterium per il potenziale sviluppo di nuovi prodotti alimentari funzionali." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/642/1/Tesi_Zanoni_Simona.pdf.
Full textZanoni, Simona <1979>. "Metabolismo di oligosaccaridi prebiotici in Bifidobacterium per il potenziale sviluppo di nuovi prodotti alimentari funzionali." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/642/.
Full textAgostini, Valeria. "Nuove conoscenze sulla composizione delle uova." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2018.
Find full textPettignano, Asja. "Sintesi e caratterizzazione di nuovi poliesteri alifatici a base di poli(butilen 1,4-cicloesandicarbossilato) per imballaggi alimentari." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/5746/.
Full textSinelli, N. "NUOVI CAMPI APPLICATIVI DELLA SPETTROSCOPIA NIR PER IL CONTROLLO DI PROCESSO E DI PARAMETRI QUALITATIVI DEI PRODOTTI ALIMENTARI." Doctoral thesis, Università degli Studi di Milano, 2006. http://hdl.handle.net/2434/60219.
Full textGUIDESI, ELENA. "Approccio integrato alla selezione di nuovi probiotici per l'applicazione nell'uomo." Doctoral thesis, Università Cattolica del Sacro Cuore, 2016. http://hdl.handle.net/10280/10796.
Full textDuring my PhD thesis I screened new potential probiotic strains by combining conventional approach to newly designed platforms. I focused first on the so-called "conventional screening” aimed to the isolation of new bacterial strains of lactobacilli and bifidobacteria and to assess their safety for human consumption and their efficacy by in-vitro methods. Selected strains were then submitted to a targeted screening by specifically designed models, depending on the application to which they would be destined. These models combined in vitro tests and animal models in order to assess the applicability of newly selected strains as probiotics for the promotion of human health and their possible use in food field. I evaluated the potential use of strains in the food supplementation of subjects that follow high-protein diets to reduce the risk of intestinal accumulation of biogenic amines, and I identified a strain of Lactobacillus with alleged amino degradative activity. The main objective of another screening activity was the study of the immunoregulatory effects of new strains: combinations of probiotics resulted good promising candidates for the treatment of inflammatory and autoimmune diseases (myasthenia gravis and multiple sclerosis) in rat model. Finally, strains were screened for a potential application in food field, in order to investigate the possibility of producing spray-dried probiotic formulations to be used together with commercial ice-cream bases.
GUIDESI, ELENA. "Approccio integrato alla selezione di nuovi probiotici per l'applicazione nell'uomo." Doctoral thesis, Università Cattolica del Sacro Cuore, 2016. http://hdl.handle.net/10280/10796.
Full textDuring my PhD thesis I screened new potential probiotic strains by combining conventional approach to newly designed platforms. I focused first on the so-called "conventional screening” aimed to the isolation of new bacterial strains of lactobacilli and bifidobacteria and to assess their safety for human consumption and their efficacy by in-vitro methods. Selected strains were then submitted to a targeted screening by specifically designed models, depending on the application to which they would be destined. These models combined in vitro tests and animal models in order to assess the applicability of newly selected strains as probiotics for the promotion of human health and their possible use in food field. I evaluated the potential use of strains in the food supplementation of subjects that follow high-protein diets to reduce the risk of intestinal accumulation of biogenic amines, and I identified a strain of Lactobacillus with alleged amino degradative activity. The main objective of another screening activity was the study of the immunoregulatory effects of new strains: combinations of probiotics resulted good promising candidates for the treatment of inflammatory and autoimmune diseases (myasthenia gravis and multiple sclerosis) in rat model. Finally, strains were screened for a potential application in food field, in order to investigate the possibility of producing spray-dried probiotic formulations to be used together with commercial ice-cream bases.
Licciardello, Fabio. "Nuove prospettive di impiego di oli essenziali per la salvaguardia di prodotti alimentari confezionati." Doctoral thesis, Università di Catania, 2012. http://hdl.handle.net/10761/1152.
Full textMazzotti, Agnese. "Insetti penetratori di imballi: sistemi attuali di packaging e nuove prospettive." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
Find full textCOLANGELO, DONATO. "Nuovi approcci alla chiarifica dei mosti e al fining dei vini per la stabilità colloidale." Doctoral thesis, Università Cattolica del Sacro Cuore, 2019. http://hdl.handle.net/10280/57884.
Full textThe search for fining alternatives to bentonite has assumed great importance in white winemaking due to the drawbacks of bentonite application. The research here presented aimed at observing the viability of three innovative approaches to wine stabilization, namely chitosan addition, PEF treatments and cation exchange applicability. Chitosan successfully removed chitinases from wine, allowing at the same time a sufficient degree of colloidal stability. Collateral effects on color and aroma compounds were non-significant or acceptable when compared with the effects observed for bentonite applications reported in literature. The use of PEF was aimed at accelerating protein unfolding and aggregation and was coupled to an in-line cooling and filtration system for efficient removal of colloidal aggregates. The results collected suggested that the treatment was capable of inducing a satisfactory colloidal stability only in high- energetic double-treated wine samples, with some deleterious consequences on the color. Finally, the aim of the research for cation-exchange resins application was to find environmentally friendly cleaning procedures to regenerate the resin capacity and allow reuse of the same resin for further cycles of fining. The removal of proteins bound to the resin was possible under specific pH and ionic strength conditions with relatively low consumption of water.
COLANGELO, DONATO. "Nuovi approcci alla chiarifica dei mosti e al fining dei vini per la stabilità colloidale." Doctoral thesis, Università Cattolica del Sacro Cuore, 2019. http://hdl.handle.net/10280/57884.
Full textThe search for fining alternatives to bentonite has assumed great importance in white winemaking due to the drawbacks of bentonite application. The research here presented aimed at observing the viability of three innovative approaches to wine stabilization, namely chitosan addition, PEF treatments and cation exchange applicability. Chitosan successfully removed chitinases from wine, allowing at the same time a sufficient degree of colloidal stability. Collateral effects on color and aroma compounds were non-significant or acceptable when compared with the effects observed for bentonite applications reported in literature. The use of PEF was aimed at accelerating protein unfolding and aggregation and was coupled to an in-line cooling and filtration system for efficient removal of colloidal aggregates. The results collected suggested that the treatment was capable of inducing a satisfactory colloidal stability only in high- energetic double-treated wine samples, with some deleterious consequences on the color. Finally, the aim of the research for cation-exchange resins application was to find environmentally friendly cleaning procedures to regenerate the resin capacity and allow reuse of the same resin for further cycles of fining. The removal of proteins bound to the resin was possible under specific pH and ionic strength conditions with relatively low consumption of water.
Fischetti, Francesca. "Meat analogues: le nuove alternative ai prodotti carnei." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2022.
Find full textFiorini, Eleonora. "La valutazione economica di nuove idee imprenditoriali: il caso di "No Food Waste"." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016.
Find full textBISCOTTI, ANTONIO. "Trasferimento di conoscenze tra ricerca e industria delle macchine per gelato: sviluppo e validazione di nuovi strumenti." Doctoral thesis, Università degli studi di Modena e Reggio Emilia, 2020. http://hdl.handle.net/11380/1201039.
Full textFor the food industry, it is of primary importance to ensure quality control and approved products. Measurement of food quality parameters, including microbiological ones associated to a safety risk, is necessary to characterize the product and to avoid adulteration or contamination. A microbial population associated to the environment of production and to the ingredients of the product itself is normally present in food matrices. Dairy products, due to their composition characteristics, are well suited as an ideal growth substrate capable of promoting bacterial growth. Ice-cream is not a sterile product, albeit ice-cream machines generally perform a heat treatment cycle that reduces the load of microorganisms, in order to lay below the limits of pathogenic bacteria imposed by law. The first part of my research project was aimed to develop a biosensor system for bacterial concentration measurement in a milk-based mix for ice-cream, that exploits the impedance technique. The measurement of the impedance has been done applying to the samples a sinusoidal voltage signal. Ice-cream mix samples inoculated with increasing concentration of E.coli ATC11229, ranging from 101 to 1010 CFU/ml, have been monitored over the time to obtain a calibration curve. As a comparison value, the ice-cream mix milk-based without inoculum was used as control in the tests. The samples were analyzed in parallel by both measurement with the biosensor and by plate count enumeration, in order to compare the results. The Detect Time (DT) was calculated for each sample at the different concentration of inoculum. The ice-cream mixes not inoculated didn’t show any change in electrical parameters measured over the time. Where the inoculum was added to the ice-cream mix, change in the electrical parameters was recorded with an increase of the DT decreasing the bacterial load. The second part of my research work was aimed to develop equipment and processing methods to control the microbiological safety of ice-cream machines in a centralized laboratory. In recent years there has been a growth in the phenomenon of the relocation of ice-cream mixes production centers that prepare the product to be sent directly to the sales points. Ice-cream mixes can be produced and packaged in a production center, then stored and transported to sales points. Once the sale points are reached, the ice-cream mixes are transformed into ice-cream. In this perspective, a shelf-life study of ice-cream mixes and a packaging process has been performed, in order to develop an optimal protocol to offer to the customers for a standardized quality in a multi-location gelato retail context. Preliminary experiments evaluated the microbiological stability of the products processed and stored at +4 °C. Bacteriological analysis and pH measurements confirmed the stability of the product. In order to limit the possibility to contaminate the product, a professional bag filling machine was developed. Using the bag filling system, pH and microbiological stability for up to one month of the ice-cream mix was confirmed. Sensory analysis was performed to evaluate the quality of the product during one month of shelf-life al +4 °C. Every 7 days, a bag containing ice-cream mix was opened and the ice-cream was tasted. The analysis demonstrated good process reliability in the sensorial quality of the ice-cream produced with the mixes during all the shelf-life.
Cavina, Nicole. "Grano saraceno: ingrediente innovativo per lo sviluppo di una nuova bevanda vegetale." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/22086/.
Full textSimoncelli, Giammarco. "L'evoluzione della normativa sull'agricoltura biologica europea ed analisi del nuovo reg.8482018." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/22074/.
Full textMonaco, Mara. "Il sistema dei controlli nel settore alimentare: analisi e considerazioni sul nuovo regolamento comunitario 625." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020.
Find full textGorni, Anita. "Meat analogues e carne artificiale: le nuove alternative alle proteine animali." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.
Find full textNuzzi, M. "REALIZZAZIONE DI UN NUOVO INGREDIENTE ALIMENTARE A BASE DI PETALI DI ROSA: ASPETTI NUTRACEUTICI E TECNOLOGICI." Doctoral thesis, Università degli Studi di Milano, 2010. http://hdl.handle.net/2434/150035.
Full textFIORENTINI, CECILIA. "Sviluppo di nuove plastiche a base biologica per il settore dell'imballaggio alimentare." Doctoral thesis, Università Cattolica del Sacro Cuore, 2022. http://hdl.handle.net/10280/115281.
Full textIn this PhD thesis several strategies were explored to industrially manufacture new bio-plastic blends based on PLA-PHB with improved sustainability performance, obtained with PHB from potato peels, cellulose, and chitin nano-additives from by-products (e.g., wheat straw and shrimp shells). The blends were used to produce films for the food sector that have been tested for compatibility with foodstuffs resulting compliant with EU Regulation 10/2011 for some target food applications. Based on the current innovations in the field of food packaging, active materials have also been produced on an industrial scale by adding commercial extracts, specifically of orange peels and olive leaves, either by extrusion or through the technique of surface coating. The activity of the films produced was evaluated using food simulants and through direct application on fresh pork burgers to assess a possible extension of meat shelf-life. In general, the results obtained are promising and represent a good starting point for future work, which should aim at testing if an increase in the concentration of the extracts in the formulations could further improve the activity of the films produced.
Useli, Giorgia. "Valutazione della qualita di un nuovo prodotto ottenuto da co-frangitura di olive e sottoprodotto del pomodoro." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/14619/.
Full textCacchi, Mattia. "Qualita di nuove accessioni di fragola (fragaria x ananassa) in funzione del tipo di materiale di propagazione: Aspetti analitici e sensoriali." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7877/.
Full textSattin, Eleonora. "16S amplicon Next Generation Sequencing approach evaluation and its application to food microbial communities characterization." Doctoral thesis, Università degli studi di Padova, 2016. http://hdl.handle.net/11577/3424381.
Full textGli alimenti sono ecosistemi complessi in quanto vengono influenzati sia da fattori intrinseci che da fattori estrinseci, come la composizione chimica, il profilo microbiologico e l'ambiente, che possono avere forte impatto sul prodotto finale. In particolare nei formaggi i microbi sono il fattore più influente perché possono modificare sia la vita commerciale che il sapore ed il gusto del prodotto. Inoltre il microbiota stabilisce delle complesse interazioni internamente alla comunità batterica e con l'ambiente, a tal punto che al giorno d'oggi queste dinamiche sono state solo in parte evidenziate con metodi tradizionali coltura-dipendenti. Di conseguenza i metodi coltura-indipendenti, come il Sequenziamento di Nuova Generazione (NGS), stanno diventando un potente strumento per studiare in profondità le comunità microbiche presenti in una varietà di nicchie ecologiche, compresi gli alimenti. È probabile che ormai tali tecniche debbano essere considerate complementari ai metodi di microbiologia coltura-dipendenti. In questo ampio progetto abbiamo valutato e applicato un approccio NGS sul gene 16S rRNA allo studio della vita commerciale della Ricotta, delle sue materie prime e ad alcuni studi di tecnologia degli alimenti su formaggi molli o stagionati addizionati con colture batteriche antagoniste. In tutti questi studi i metodi NGS sono sempre stati supportati da approcci cultura-dipendenti, altri metodi molecolari e analisi biochimiche. I vari studi sono suddivisi tra i successivi capitoli di questa tesi. Per prima cosa utilizzando una comunità batterica artificiale abbiamo valutato l'impatto del workflow di processo del protocollo 16S-NGS sulla struttura e sull'identificazione della comunità reale. Con questo approccio abbiamo dimostrato che l'analisi bioinformatica, e principalmente la strategia di raggruppamento delle sequenze in OTU (Operational Taxonomic Unit), può influenzare la diversità della comunità di tipo alfa (intra-campione), ma non la sua beta-diversità (inter-campioni). In questo senso entrambe le strategie possono essere utilizzate al fine di confrontare le strutture delle comunità microbiche. Inoltre il protocollo si è dimostrato robusto e ripetibile. In secondo luogo abbiamo valutato le materie prime (siero e panna) utilizzate per la produzione di ricotta, dimostrando che la qualità microbiologica di queste materie deve essere migliorata. Poiché queste hanno mostrato una forte biodiversità (principalmente di Streptococcaceae e Pseudomonadaceae) e un'alta concentrazione di spore aerobie (da 10 a 104 UFC/ml, non presenti nella panna), il loro utilizzo per la produzione della ricotta potrebbe danneggiare il prodotto finale. Non di meno l'approccio combinato NGS con Gas Cromatografia su sieri congelati con difetti organolettici ha mostrato che lo stoccaggio non igienico delle materie prime conduce alla produzione di composti di fermentazione o di ossidazione lipidica, guidati anche da particolari batteri come Acinetobacter, Lactococcus e Pseudomonas. Nel terzo capitolo abbiamo valutato la vita commerciale della Ricotta durante l'inverno e l'estate, dimostrando che il microbioma della Ricotta era composto principalmente da batteri sporigeni, Bacillus, Paenibacillus e Clostridium (oltre l'80% di abbondanza relativa). Inoltre abbiamo trovato una ricotta estiva con colorazione rosa e, applicando l'approccio molecolare Multi-locus Sequence Typing, abbiamo dimostrato che il batterio che causava il difetto apparteneva al gruppo del Bacillus cereus, in particolare si trattava di un ceppo di B. mycoides/wehienstephanensis. Tale lavoro è stato pubblicato nella rivista Food Microbiology. Nell'ultimo capitolo abbiamo applicato l'analisi NGS a studi di culture ausiliari aggiunte a formaggi a pasta molle o stagionati, al fine di evidenziare il loro effetto antibatterico. Abbiamo così valutato l'effetto anti-Gammaproteobacteria di alcuni ceppi come L. rhamnosus, L. sakei e Carnobacterium maltoaromaticum in formaggi freschi industriali con problematiche di rigonfiamento della confezione e deterioramento prematuro. Dal punto di vista NGS abbiamo evidenziato che C. maltoaromaticum riusciva ad eliminare quasi tutti i contaminanti a temperature di conservazione differenti. In conclusione, con l'approccio NGS, è stato possibile migliorare la valutazione della qualità microbiologica alimentare e sostenere la ricerca tecnologica alimentare. Infatti i risultati ottenuti in questo studio dimostrano come l'applicazione di tecnologie NGS, descrivendo approfonditamente le comunità microbiche, potrebbe diventare nel prossimo futuro uno strumento scalabile ed efficace, adatto per migliorare la qualità e la sicurezza alimentare, nonché favorire la produzione di nuovi alimenti.
Cevoli, Gianmarco. "Consumo di carne e di prodotti alternativi: analisi dei fattori di influenza sulla scelta d'acquisto del consumatore." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
Find full textRomano, Elvira, Roberto Bartolino, Bartolo Gabriele, and Giovanni Sindona. "Un approccio innovativo di spettrometria di massa per il recupero di nutraceutici ad alto valore antiossidante da piante, sviluppo di nuovi alimenti funzionali, qualità e sicurezza agroalimentare." Thesis, 2011. http://hdl.handle.net/10955/1063.
Full textBASILI, Silvia. "Gli attuali scenari del commercio internazionale dei prodotti agroalimentari, tra vecchie e nuove questioni di sicurezza alimentare: una riflessone comparatistica ta UE, USA e CINA." Doctoral thesis, 2018. http://hdl.handle.net/11393/251081.
Full textTriggiani, Maurizio. "Integration of machine learning techniques in chemometrics practices." Doctoral thesis, 2022. http://hdl.handle.net/11589/237998.
Full textALESSANDRA, Campanari. "“IDENTITY ON THE MOVE” FOOD, SYMBOLISM AND AUTHENTICITY IN THE ITALIAN-AMERICAN MIGRATION PROCESS." Doctoral thesis, 2018. http://hdl.handle.net/11393/251264.
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