3.2. Effect of BEP on the chemical composition of soybean residue
As indicated in Table 2, the yields of lipid, protein, and total dietary
fiber are not significantly different between the control and
the treated sample (P > 0.05). In contrast, the yield of BEPSDF
was significantly improved from 2.6 ± 0.3% to 30.1 ± 0.6%, which
was approximately 10-fold higher than that of the control
(P < 0.05). The results suggest that BEP treatment can significantly
improve the amount of SDF recovered from soybean residue. The
combination of intense instantaneous heat energy along with other
forces during BEP treatment, including cavitation, friction and impact
compression, is considered to be the main reason for the
transformation of the insoluble fiber into SDF