4. Conclusions
There is an increasing interest in maximising the utility of
waste streams from processed fruit and vegetable in order to boost
economic efficiency and reduce waste. In this study, the yellow
soybean hulls, one of many possible waste streams, was processed
by mimicking different environments of the human digestive
system, such as the acidic environment of the stomach and basic
environment of the human small intestine, to purify dietary fibre
by digesting/removing starch, protein, fat, and pigments. This
study may allow an improved utilisation of this resource, which
is currently underexploited.
Because the way of processing this agricultural byproduct
determines the physicochemical properties and functionality of
fibres, differences among the TDF, IDF, and SDF, as well as the
potential applications, are considered in this study. The results
indicated that colour of lightness was significantly improved. There