食品科学 ›› 2011, Vol. 32 ›› Issue (9): 64-67.doi: 10.7506/spkx1002-6630-201109014

• 基础研究 • 上一篇    下一篇

膜液质量浓度对MC/WG可食性复合膜性能的影响

段林娟,卢立新*   

  1. 江南大学机械工程学院
  • 出版日期:2011-05-15 发布日期:2011-04-11

Effect of Film-forming Solution Concentration on the Properties of MC/WG Edible Film

DUAN Lin-juan,LU Li-xin*   

  1. School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
  • Online:2011-05-15 Published:2011-04-11

摘要: 研究膜液质量浓度对甲基纤维素(MC)/小麦面筋蛋白(WG)可食性复合膜性能的影响。结果表明:MC/WG复合膜的抗拉强度、阻氧性能随着膜液质量浓度的增大而显著提高;断裂伸长率、透光率随着膜液质量浓度的增大而降低;水蒸气透过系数则随着膜液质量浓度的增大先减小后增大,在膜液质量浓度为50g/L时最小。各个质量浓度下的复合膜均可完全溶于水,具有良好的水溶性。综合比较复合膜在不同质量浓度下的性能,MC/WG质量浓度以50g/L为宜。

关键词: 可食性复合膜, 甲基纤维素, 小麦面筋蛋白, 性能

Abstract: The effect of film-forming solution concentration on the properties of methylcellulose (MC)/wheat gluten (WG) edible complex film was studied. The results showed that the tensile strength (TS) and oxygen barrier of the edible film were increased with increasing film solution concentration. The break elongation rate (E) and transparency (T) were decreased as the film-forming solution concentration rose. The water vapor permeability (WVP) exhibited an initial reduction and then increase as a result of the increase of the film solution concentration. The lowest WVP was observed at the film solution concentration of 50 g/L. Edible films formed at each of the concentration levels investigated could dissolve in water and the appropriate concentration level was 50 g/L.

Key words: edible film, methyl cellulose, wheat gluten, property

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