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Iranian Journal of Chemistry and Chemical Engineering، جلد ۳۸، شماره ۲، صفحات ۱۸۳-۱۹۲
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عنوان انگلیسی Fed-Batch Production of a Fermented Beverage Containing Vitamin B12
چکیده انگلیسی مقاله Production of fermented functional foods containing micronutrients is required for their health beneficial properties. The impact of 11 process variables on vitamin B12 production in a dairy beverage containing propionic acid was investigated. Propionibacterium freudenreichii ssp. shermanii was applied in a 3-l fermentor in the fed-batch fermentation system. The most suitable conditions for vitamin B12 production were achieved by 5% v/v inoculum size containing Propionibacterium freudenreichii (without Lactobacillus acidophilus) and continuous feeding of lactose with the rate of 0.04 l/h at 36°C in a medium containing 25 g/L molasses, 10 g/L corn steep liquor, at pH=6.5, after 96 h fermentation. Maximum vitamin concentration (30 mg/L) and productivity (7.5 mg/L.day) were obtained in trial 9. Organoleptic properties of the fermented beverage were also acceptable for panelists and no significant difference was observed between samples and control during 6 days refrigerated storage.
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نویسندگان مقاله Kianoush Khosravi-Darani |
Research Department of Food Technology, National Nutrition and food Technology Research Institute, Faculty of Food and Nutrition Sciences, Shahid Beheshti University of Medical Sciences, Tehran, I.R. IRAN

Solmaz Zarean |
Department of Food Science and Technology, Faculty of Agriculture, Sari Branch, Islamic Azad University, Sari, I.R. IRAN

Negin Ahmadi |
Department of Food Sciences and Technology, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences,Tehran, I.R. IRAN

Zahra Hadian |
Research Department of Food Technology, National Nutrition and food Technology Research Institute, Faculty of Food and Nutrition Sciences, Shahid Beheshti University of Medical Sciences, I.R. IRAN

Amir Mohammad Mortazavian |
Department of Food Sciences and Technology, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences,Tehran, I.R. IRAN

نشانی اینترنتی http://www.ijcce.ac.ir/article_30799_22aa99651f85c34eafff24649796d857.pdf
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