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Author Somruetai Locharoenrat
Alternative Author Pinthip Ru mpagaporn
เรื่องเต็มการประชุมทางวิชาการ ครั้งที่ 52 มหาวิทยาลัยเกษตรศาสตร์
TitlePreparation of alkali - extractable hemicellulose from defatted rice bran
Imprintการประชุมทางวิชาการ ครั้งที่ 52 เล่มที่ 6 สาขาอุตสาหกรรมเกษตร, 4-7 กุมภาพันธ์ 2557
Call# FOOD 8098

CALL # Volume Number Month Year Barcode Status

AbstractThe purpose of this research was to study the suitable methods used to remove starch and protein from defatted rice bran be fore hemicelluloses extraction. The wet sieve method and enzymatic method were studied for starch removal, whereas the use of multiple solvents (Osborne method) and enzymatic method were studied for protein removal. It was found that the wet sieve method h ad less effective than the enzymatic method using thermostable ? - amylase and glucoamylase. To remove protein, the use of multiple solvents (DSPO) and protease treatment (DSPE) decreased the amount of protein in rice bran from 30.62% to 28.61% and to 16.59% , respectively. After starch and protein removal, the destarched rice bran, DSPO rice bran and DSPE rice bran were used for alkali extraction . The yields of alkali soluble fraction obtained from each sample were higher than those of water soluble, alkali i nsoluble and hemi - cellulose A fractions. The protein content in alkali soluble fraction was in the range of 2.0 - 5.4% and was affected by the amount of protein in the rice bran.
Descriptหน้า 255-262
Subjectdefatted rice bran
hemicellulose
arabinoxylan
alkali extraction
enzymatic hydrolysis
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