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pH、离子强度等因素对椰子分离蛋白溶解性和乳化性的影响
引用本文:郑亚军,查朦涛,李 艳,赵松林,陈卫军.pH、离子强度等因素对椰子分离蛋白溶解性和乳化性的影响[J].热带作物学报,2011,32(8):1464-1468.
作者姓名:郑亚军  查朦涛  李 艳  赵松林  陈卫军
作者单位:1. 中国热带农业科学院椰子研究所,海南文昌571339;国家重要热带作物工程技术研究中心,海南儋州 571737;海南省椰子深加工工程技术研究中心,海南文昌 571339
2. 海南大学食品学院,海南海口,570228
基金项目:公益性行业科研专项(No.200903026); 海南省自然科学基金(No.20806)
摘    要:分析椰子分离蛋白(CPI)溶解性、乳化性、乳化稳定性及pH、离子强度和温度对这些功能特性的影响。结果表明,与大豆分离蛋白和棉籽分离蛋白相比,椰子分离蛋白具有较好的溶解性、乳化性、吸油性和吸水性;而pH、离子强度和温度等因素对椰子分离蛋白的溶解性、乳化性和乳化稳定性有显著影响。在等电点附近,椰子分离蛋白表现出最低的溶解性与乳化性;低离子强度可提高椰子分离蛋白的溶解性和乳化性,而高离子强度降低了其溶解性和乳化性;CPI在60℃时有较好的溶解性和乳化性。

关 键 词:椰子分离蛋白  溶解性  乳化性  pH  离子强度

Effect of Factors Including pH and Ionic Strength on the Solubility and Emulsion of Coconut Protein Isolates
ZHENG Yajun,ZHA Mengtao,LI Yan,ZHAO Songlin and CHEN Weijun.Effect of Factors Including pH and Ionic Strength on the Solubility and Emulsion of Coconut Protein Isolates[J].Chinese Journal of Tropical Crops,2011,32(8):1464-1468.
Authors:ZHENG Yajun  ZHA Mengtao  LI Yan  ZHAO Songlin and CHEN Weijun
Institution:ZHENG Yajun1,2,3,ZHA Mengtao4,LI Yan1,ZHAO Songlin1,CHEN Weijun1,3 1 Coconut Research Institute,CATAS,Wenchang,Hainan 571339,China 2 National Technology and Engineering Center of Key Tropical Product,Danzhou,Hainan 571737,China 3 Coconut Futher Processing and Engineering Technology Research Center,China 4 College of Food,Hainan University,Haikou,Hainan 570228,China
Abstract:Coconut protein isolates(CPI) were prepared from defatted coconut flour by phosphate buffer.The nitrogen solubility,emulsifying activity and emulsifying stability of CPI were determined,while some other protein isolates including soybean protein,cottonseed protein were used as the control.Then the effect of external factors including pH,temperature and ionic strength on solubility and emulsion of CPI were investigated too.Comparing to soybean protein isolates and cottonseed protein isolates,coconut protein ...
Keywords:Coconut protein isolates  Solubility  Emulsion  pH  Ionic strength  
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