食品科学2018，Vol.39Issue(2)：53-57,5.DOI:10.7506/spkx1002-6630-201802009
毛葱膳食纤维性质及结构分析
Properties and Structure of Dietary Fiber from Tillering Onion
摘要
Abstract
The water-holding capacity,oil-holding capacity,cation exchange capacity and cholesterol adsorption capacity of dietary fiber from tillering onion with different particle sizes were studied and the structure was determined by scanning electron microscopy (SEM),infrared spectroscopy and X-ray diffraction analysis.The results showed that the soluble dietary fiber content of tillering onion was 5.79％.The water-holding capacity,oil-holding capacity,swelling capacity and the cation exchange capacity of the dietary fiber were 14.83 g/g,19.57 mL/g,1.95 g/g and 0.62 mmol/g,respectively.The cholesterol adsorption capacity was 126.73 mg/g at pH 2,and 159.50 mg/g at pH 7.Under SEM,the dietary fiber exhibited an irregular fluffy network structure.Fourier transform infrared spectroscopy analysis suggested that the dietary fiber had the characteristic absorption peaks of cellulose and hemicelluloses,such as C =O,O-H,C-H.The results of X-ray diffraction indicated that the crystallinity of the dietary fiber was better and the crystalline and amorphous regions were preserved.关键词
毛葱/膳食纤维/结构/性质Key words
tillering onion/dietary fiber/structure/properties分类
轻工纺织引用本文复制引用
王大为,宋云禹,刘阳,张晶,曹宸瑀..毛葱膳食纤维性质及结构分析[J].食品科学,2018,39(2):53-57,5.基金项目
吉林农业大学人才计划项目(20160509) （20160509）
