Comprehensive assessment of these
treatments is conducive to processing optimization. In most
cases, it was more difficult to reduce soy odor in black soymilk
than in yellow soymilk. Even if the combination of hot grinding
and two-phase UHT treatments was used, it was not possible to
make some odor compounds below their extremely low sensory
threshold level. Autooxidation of polyunsaturated fatty acids is a
significant factor for consideration in the design of processes to reduce soy odor in soymilk. Future studies should be done to
assess the functional (sensory and other) properties of soymilk
as affected by different methods of processing, particularly for
improving the quality of black soymilk.