期刊
INTERNATIONAL JOURNAL OF FOOD MICROBIOLOGY
卷 112, 期 1, 页码 75-80出版社
ELSEVIER
DOI: 10.1016/j.ijfoodmicro.2006.05.015
关键词
oat fermentation; oat drink; probiotic; lactic acid bacteria; beta-glucan
In the present work, a whole-grain oat substrate was fermented with lactic acid bacteria to obtain a drink, combining the health benefits of a probiotic culture with the oat prebiotic beta-glucan. The levels of several factors, such as starter culture concentration, oat flour and sucrose content, affecting the fermentation process, were established for completing a controlled fermentation for 8 h. The viable cell counts reached at the end of the process were about 7.5 x 10(10) cfu ml(-1). It was found that the addition of sweeteners aspartame, sodium cyclamate, saccharine and Huxol (12% cyclamate and 1.2% saccharine) had no effect on the dynamics of the fermentation process and on the viability of the starter culture during product storage. Beta-glucan content in the drink (0.31-0.36%) remained unchanged both throughout fermentation and storage of the drink. The shelf life of the oat drink was estimated to 21 days under refrigerated storage. (c) 2006 Elsevier B.V. All rights reserved.
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