Abstract：
:The effects of hydrothermal conditions for pretreating wheat bran on the quality of residual protein for animal feeding, and on monosaccharide release for ethanol production were studied according to a 4×2×2 design with the factors, temperature (120, 140, 160, and 180°C), acidity (pH 2.3 and 3.9), and retention time (5 and 10 min). Temperature affected the quality of residual protein for animal feeding. Pretreatment at 120 and 140°C did not affect O-methylisourea-reactive lysine in protein-rich wheat bran residue, although total lysine decreased with increasing temperature at pH 2.3. At temperatures higher than 140°C, reactive lysine decreased and melanoidins, furfural and 5-HMF increased. Lower acidity during pretreatment at 120 and 140°C increased the digestibility of the residual wheat protein in vitro by 36%. Pretreatment conditions did not substantially affect the release of monomeric xylose and arabinose by hemicellulases, which suggests that arabinoxylans in wheat bran are well accessible for enzymes.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
van den Borne JJ,Kabel MA,Briens M,van der Poel AF,Hendriks WHdoi
10.1016/j.biortech.2012.08.052subject
Has Abstractpub_date
2012-11-01 00:00:00pages
446-54eissn
0960-8524issn
1873-2976pii
S0960-8524(12)01231-Xjournal_volume
124pub_type
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