文章基本信息

标题：Lacticaseibacillus rhamnosus GG Survival and Quality Parameters in Kefir Produced from Kefir Grains and Natural Kefir Starter Culture
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作者：Amin Yousefvand ; Xin Huang ; Mehdi Zarei 等
期刊名称：Foods
电子版ISSN：2304-8158
出版年度：2022
卷号：11
期号：4
DOI：10.3390/foods11040523
语种：English
出版社：MDPI Publishing
摘要：The study aimed to determine the effect of starter cultures (kefir grains and natural kefir starter culture without grains) on Lacticaseibacillus rhamnosus GG (LGG) survival and on the quality characteristics of kefir. To this end, the viability of probiotic L. rhamnosus GG strain and the rheological properties and quality parameters of kefir beverages were tested during storage over 21 days at 4 °C. The final LGG counts were 7.71 and 7.55 log cfu/mL in natural kefir starter culture and kefir grain, respectively. When prepared with probiotic bacteria, the syneresis values of kefir prepared using natural kefir starter culture was significantly lower ( p < 0.05) than that of kefir made using grains. However, the viscosity indices, hysteresis loop, and dynamic moduli were similar between kefir made with natural kefir starter culture and other kefir formulations ( p > 0.05). Moreover, all samples showed shear-thinning behavior. The flavor scores for kefir prepared using natural kefir starter culture were significantly higher than for the other samples ( p < 0.05), but overall acceptability was similar at the 10-day assessment across both starters (with and without grain) after the addition of probiotic bacteria ( p > 0.05). Overall, the results indicate that natural kefir starter culture could be a potential probiotic carrier.
关键词：enprobiotickefirnatural kefir starter culturekefir grainviscosity