食品工业科技2017，Vol.38Issue(18)：50-55,59,7.DOI:10.13386/j.issn1002-0306.2017.18.010
核桃粕膳食纤维提取、结构分析及粒度差异对其理化性质的影响
Extraction, structural analysis of walnut dietary fibers and effects of particles on its physiochemical properties
摘要
Abstract
To provide basis and reference for the utilization of walnut dietary fibers,walnut dietary fibers were extracted using chemical extraction methods and the physiochemical properties of five fibers with different particles sizes,including below 40 mesh,40～60 mesh,60～80 mesh,80～120 mesh,120～160 mesh and beyond 160 mesh,were also investigated.Results suggested that the yield of walnut dietary fibers,composing mainly of 76.34 ％ of dietary fibers and 5.41％ of protein,was 12.47 ％.Infrared spectroscopy scanning pictures indicated that walnut dietary fibers had remark absorbance at 3420 cm-1,suggesting fiber structure had not been destructed.The significant differences of water-keeping capability,swelling capability and viscosity were observed during determining physiochemical properties of five dietary fibers with varying particle sizes.The best water-keeping capability,7.76 g· g-1,was observed in walnut dietary fibers with 120～ 160 mesh,and the best swelling capability and viscosity,5.28 mL·g-1,21.25 mPa· s,respectively,both were observed in dietary fibers with 80～120 mesh.However,walnut dietary fibers size over 160 mesh had the best oil-keeping capability,with 1.92 g·g 1.In addition,absorption capability of glucose was optimum at the particles 120 to 160 mesh,cation absorptin capability peaked at the particle range of 80 to 120 mesh.Overall,walnut dietary fibers with the particle size of 80～160 mesh had the optimun physiochemical properties.关键词
核桃粕/膳食纤维/粒度/理化性质/葡萄糖阻滞力/阳离子吸附力Key words
deoiled walnut/dietary fibers/particle sizes/physiochemical properties/absorption capability of glucose/absorption capability of cation分类
轻工纺织引用本文复制引用
耿舒雯,张有林,张润光,阮晓慧,何鑫,金子纯..核桃粕膳食纤维提取、结构分析及粒度差异对其理化性质的影响[J].食品工业科技,2017,38(18):50-55,59,7.基金项目
陕西省农业科技攻关项目(2015NY007) （2015NY007）
西安市现代农业创新计划项目(NC1317.3) （NC1317.3）
西安市农产品深加工及农业装备技术研究项目(NC1405.2). （NC1405.2）
