Abstract
This study investigated the viability of probiotic bacteria and changes in pH in fermented flavoured soy milk drinks using ABY-1 starter culture which contains Streptococcus thermophilus, Lactobacillus delbrueckii subsp. bulgaricus, L. acidophilus LA-5 and Bifidobacterium BB-12. Soy milk supported the growth of all tested organisms through 21 days of storage at 5oC. Fermented soy milk was mixed with 4% sucrose and 15% of 3 kinds of fruits, banana, guava, and mango to produce ferminted flavoured soy milk drinks. All formulations showed probiotic viabilities ranging from 5 to 9 log cfu/g, and fruit pulps did not affect the probiotic viabilities.
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