食品工业科技Issue(13)：220-224,5.DOI:10.13386/j.issn1002-0306.2017.13.042
明胶添加量对兔皮明胶膜特性与结构的影响
Effect of gelatin additions on the properties and structure of rabbit skin gelatin films
摘要
Abstract
The effect of gelatin additions on the properties and structure of rabbit skin gelatin films was studied by measuring the mechanical properties,water vapor permeabilities,subunit content and structure.The results showed that the thickness increased because gelatin network structure in the gelatin film system increased with increasing the addition of gelatin.Mechanical property results showed that the tensile strength of gelatin films was the highest when the addition of gelatin was 4 g/100 mL(w/v),however the gelatin films possessed the highest elongation at break as the addition of gelatin was 6 g/100 mL(w/v).The water vapor permeabilities of gelatin films increased with increasing the gelatin additions.The results of sodium dodecyl sulfate-polyacrylamide gel electrophoresis(SDS-PAGE)indicated that the low molecular weight of protein fraction formed protein-protein cross-linking which resulted in the highest tensile strength as the gelatin addition was 4 g/100 mL(w/v).FT-IR results showed that amide A band moved to high wave number as the gelatin addition was 4 g/100 mL(w/v),which indicated that glycerol molecules didn't react with N-H group of peptides.A greater interaction occurring between gelatin functional groups to form a unique network structure conversely.Furthermore,curve-fitting of amide I band showed that there were more stable structure in the film matrix as the gelatin addition was 4 g/100 mL(w/v),so the films possessed greater stability and film-forming properties.关键词
兔皮/明胶膜/明胶添加量/结构Key words
rabbit skin/gelatin films/gelatin addition/structure分类
轻工纺织引用本文复制引用
杨晖,马良,韩霜,黄丹丹,张宇昊..明胶添加量对兔皮明胶膜特性与结构的影响[J].食品工业科技,2017,(13):220-224,5.基金项目
国家自然科学基金-青年科学基金项目(31301425) （31301425）
中央高校基本科研业务费重大项目(XDJK2015A015) （XDJK2015A015）
中国博士后科学基金面上项目(2014M562267) （2014M562267）
中国博士后科学基金特别资助项目(2015T80951) （2015T80951）
重庆市基础科学与前沿技术研究专项重点项目(cstc2015jcyjBX0116) （cstc2015jcyjBX0116）
第四批重庆市高等学校优秀人才支持计划项目. （）
