食品科学 ›› 2011, Vol. 32 ›› Issue (3 ): 1-5.doi: 10.7506/spkx1002-6630-201103001

• 基础研究 •    下一篇

酪蛋白磷酸肽钙- 乳清蛋白复合膜物理性质的研究

李 彬,刘 飞,李昇乐,李英杰,冷小京*   

  1. 中国农业大学中国农业大学食品科学与营养工程学院
  • 收稿日期:2010-04-19 修回日期:2010-12-30 出版日期:2011-02-15 发布日期:2011-01-13
  • 通讯作者: 冷小京 E-mail:xiaojing.leng@gmail.com
  • 基金资助:

    国家“863”计划项目(2007AA10Z311);“十一五”国家科技支撑计划项目(2006BAD04A06)

Physical Properties of Blended Film with Whey Protein Isolate and Casein Phosphopeptide

LI Bin,LIU Fei,LI Sheng-le,LI Ying-jie,LENG Xiao-jing*   

  1. College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
  • Received:2010-04-19 Revised:2010-12-30 Online:2011-02-15 Published:2011-01-13
  • Contact: LENG Xiao-jing E-mail:xiaojing.leng@gmail.com

摘要: 在乳清分离蛋白(WPI)基础膜中引入酪蛋白磷酸肽钙(CPPs)制备成富钙的单层复配膜和双层复合膜,并对膜的有关物理性质(机械强度、含水量、水蒸气透过系数)进行评价。单层复配膜中CPPs 与WPI 的最大百分比为8%,总钙含量最高为0.59%。CPPs 的添加量对所测膜的物理性质没有显著影响(P > 0.05)。双层复合膜可使总钙含量高达28% 以上,但同时也使膜的机械强度较单层复配膜降低近一半,且含水量显著降低(P < 0.05)。

关键词: 酪蛋白磷酸肽钙, 乳清分离蛋白, 单层复配膜, 双层复合膜

Abstract: The preparation and characterization of the single- and double-layer edible packaging films using the casein phosphopeptide (CPPs) and whey protein isolate (WPI) were performed in this study. The CPPs content could reach 8% (Ca/WPI) in the single-layer composite film and the calcium contained could attain 0.59% (Ca/WPI). Addition of CPPs had no significant effects on the physical properties (moisture content, water vapour permeability, tensile properties etc.) of the singlelayer films (P >0.05). The double-layer film was designed to increase the calcium content, and the maximum content of calcium could be above 28% (Ca/WPI); however, its tensile strength and moisture content were reduced compared with the single-layer one (P <0.05).

Key words: casein phosphopeptide, whey protein isolate, single-layer composite films, double-layer composite films

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