on yeast fermentation of okara. Recently, Rashad et al. (2013) showed
that yeast-fermented okara had changes in proximate composition
and increased antioxidant capacity. In our previous work, we observed
that yeast fermentation of autoclaved okara led to interesting changes
in its volatile profiles (Vong and Liu, 2016b). Aldehydes in the okara,
such as hexanal and trans-2-hexenal, were biotransformed into
alcohols, ketones and/or esters, and the effect varied with the yeast
employed. Okara fermented by dairy yeasts (yeasts typically associated
with fermented dairy products) led to increase in cheese-like volatiles.
Therefore, the present study further explored other biochemical changes
in okara fermented by the dairy yeast, Yarrowia lipolytica.