Hickory-black soybean yogurt (HBY) was prepared with
hickory-black soybean milk and reconstituted milk mixture in
a proportion of 2:3 by volume, added with sucrose (7 g/100 mL),
stirred, heated to 43 C inwater bath and preserved in it for 30 min,
homogenized under 22 MPa by JHG-Q54-P60 Homogenizer
(Shanghai Fusion Machinery Equipment Co., Ltd, Shanghai, China)
for 15 min, then sterilized at 95 C for 20 min. After being cooled to
about 43 C in water bath, the blend was inoculated with 6 mL/
100 mL starter by volume ratio, cultured at 42 C for 6 h, the pH at
finishing fermentation point was about 4.3, then stored overnight
at 4 C in the fridge.