期刊名称:Polish Journal of Food and Nutrition Sciences
印刷版ISSN:1230-0322
电子版ISSN:2083-6007
出版年度:2018
卷号:68
期号:2
页码:133-140
DOI:10.1515/pjfns-2017-0015
语种:English
出版社:Walter de Gruyter GmbH
摘要:Corn hulls were abundant and inexpensive byproducts of the corn dry or wet milling processes, but most of them were discarded as agro-wastes. The aim of this study was to extract the dietary fiber by hot-compressed water (HCW) from defatted corn hull and to determine the chemical properties. Results showed that temperature and time played critical roles in extraction efficiency; the maximal yield of dietary fiber A (DFA) extracted by HCW reached 33.0% at 150°C for 60 min. The yield of dietary fiber B (DFB) increased from 2.0% to 56.9% as the temperature increased from 110 to 180°C, while the yield of solid residue (SR) decreased from 88.7% to 27.7%. Fourier transform infrared spectroscopy (FT-IR) results demonstrated that C-H, O-H, C=O, COO- occurred in the DFA, SR and DFB. The dietary fiber polysaccharides consisted of arabinose, galactose, glucose, xylose and uronic acid.
关键词:corn hull ; hot-compressed-water extraction ; soluble dietary fi ber ; sugar composition ; FT-IR