Sökning: "chemical preservatives"

Hittade 4 uppsatser innehållade orden chemical preservatives.

  1. 1. Jämförelse av olika konserveringsmedel genom belastningstest i ett flytande livsmedel

    Kandidat-uppsats, Högskolan Kristianstad/Fakulteten för naturvetenskap

    Författare :Elna Crona; Nathalie Johnsson; [2020]
    Nyckelord :Microbiological challenge testing; food spoilage; hurdle technology; clean label; natural preservatives; chemical preservatives; Mikrobiologiskt belastningstest; matförskämning; hurdle teknik; ren etikett; naturliga konserveringsmedel; kemiska konserveringsmedel;

    Sammanfattning : Inledning En tredjedel av den mat som produceras i världen slängs (United Nations Development Programme [UNDP], 2020) och de livsmedelsförstörande mikroorganismerna är ett vanligt förekommande problem och en bidragande orsak till det globala matsvinnet (Snyder & Worobo, 2018). Livsmedelsindustrin använder därför olika hurdletekniker för att minimera risken för tillväxt av förskämningsorganismer (Snyder & Worobo, 2018). LÄS MER

  3. 2. Shelf life of fresh-cut fruits and salad leaves treated with Pulsed Electric Field (PEF)

    Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

    Författare :Chandan Soni; [2019]
    Nyckelord :PEF; pulsed electric field; reversible electroporation; calorimeter; metabolic rate; shelf life; fresh commodities; food engineering; livsmedelsteknik; Agriculture and Food Sciences; Technology and Engineering;

    Sammanfattning : Application of Pulsed Electric Field (PEF) treatment on five fresh commodities was analysed for the changes in the metabolic and physiological effects on their shelf life. Treatment parameters were optimised in order to achieve uniform electroporation on the samples, which was analysed by Propidium Iodide staining for the leaf samples. LÄS MER

  4. 3. Essential oils and phenolic compounds as food preservatives

    Kandidat-uppsats, SLU/Dept. of Biosystems and Technology (from 130101)

    Författare :Erika Häggman; [2019]
    Nyckelord :Origanum; Thymus; thymol; carvacrol; secondary metabolites; bacteria; foodborne; phenols; antimicrobial;

    Sammanfattning : Recent studies have shown that consumers are increasingly choosing food items without synthetic preservatives or additives. In order to find alternatives to address the food industry’s need of ensuring food safety, this essay focuses on the possible use of natural preservatives derived from antiseptic plants. LÄS MER

  5. 4. Microbial test organisms for sterilization processes in food industry

    Master-uppsats, Lunds universitet/Bioteknik; Lunds universitet/Teknisk mikrobiologi

    Författare :Yasmin Nabila; [2018]
    Nyckelord :Aseptic processing and packaging; validation; test organisms; Aspergillus brasiliensis; Bacillus atrophaeus; Bacillus subtilis; sterilization; disinfection; applied microbiology; teknisk mikrobiologi; Technology and Engineering; Agriculture and Food Sciences;

    Sammanfattning : The importance of sterilization processes has been a major topic in the food manufacturing industry since it preserves the quality and provides longer shelf-life by preventing microbiological recontamination of products. Aseptic packaging is an alternative technique to pack commercially sterile products into containers with a very low recontamination rate, thus, the entire production chain must be designed according to the aseptic condition, including the packaging material, the filling machines, and the surrounding area where the process takes place. LÄS MER