Recently the aged and vegetarians have paid more attention to soyproduct
due to its taste, easy digestibility, and its associationwith health
(Watanabe et al., 2014).With a high content of protein (Ca. 3.6%), soyyogurt
can be served as an alternative to dailymilk, in particular for the
aged and vegetarians who want to avoid animal protein (Liu, 2009).
However, soy-yogurt has a defect of a low vitamin content, mainly the
water-soluble vitamin B12 (Mo et al., 2013).