表面活性剂对可食性葛根淀粉膜性能的影响

上海交通大学学报（自然版） ›› 2012, Vol. 46 ›› Issue (05): 813-818.

表面活性剂对可食性葛根淀粉膜性能的影响

钟宇a,b,李云飞b,c

（上海交通大学a. 制冷与低温工程研究所； b. 食品科学与工程系；c. 陆伯勋食品安全研究中心，上海 200240）

收稿日期:2011-03-23 出版日期:2012-05-28 发布日期:2012-05-28
基金资助:
国家科技攻关计划重点项目（2008BAD91B02）

Effects of Surfactants on the Properties of Kudzu (Pueraria Lobata) Starch Films

ZHONG Yu-a, b , LI Yun-Fei-b, c

(a.Institute of Refrigeration and Cryogenic Engineering; b.Department of Food Science and Technology; c.Bor S. Luh Food Safety Research Center, Shanghai Jiaotong University, Shanghai 200240，China)

Received:2011-03-23 Online:2012-05-28 Published:2012-05-28

摘要/Abstract

摘要： 以葛根淀粉为基材，丙三醇为增塑剂，吐温20和司盘80为表面活性剂，采用流延法制备可食性葛根淀粉膜，并考察表面活性剂对葛根淀粉膜液及膜的结构与力学性能的影响.结果表明：2种表面活性剂均能够有效降低膜液的表面张力，可与葛根淀粉发生络合反应而形成单螺旋V型结晶，降低淀粉膜的拉伸强度、提高其断裂伸长率；吐温20可以增强淀粉膜液在玻璃及石蜡基材上的润湿性，使淀粉膜更加平整光滑，提高了淀粉膜的水溶性；司盘80可以增加膜的表面粗糙度，但降低了其透湿性；相比单一表面活性剂，混合表面活性剂的加入未能有效改善淀粉膜的力学性能.

关键词: 可食性包装膜, 葛根淀粉, 表面活性剂, 力学性能

Abstract: An edible film based on kudzu starch was prepared and the effect of the surfactant on physical and mechanical properties of the films was evaluated. For the film, glycerol as the plasticizer was added in the solution, besides tween 20 and span 80 were used as surfactants. It was found that each surfactant decreases surface tension of the filmforming solution, promotes the formation of V-type crystal in the film, decreases the mechanical strength and increases the flexibility of the film. Tween 20 improves the wettability of film-forming solution on both glass and paraffin wax substrates, smoothes the surface of the film and increases the film’s solubility. The film containing only tween 20 is rougher but has lower hygroscopicity than other films. Blendedsurfactant does not effectively improve the properties of the film as regarding the film containing single surfactant.

Key words: edible film, kudzu starch, surfactant, mechanical properties

中图分类号:

TS 236

钟宇a, b, 李云飞b, c. 表面活性剂对可食性葛根淀粉膜性能的影响[J]. 上海交通大学学报（自然版）, 2012, 46(05): 813-818.

ZHONG Yu-a, b , LI Yun-Fei-b, c . Effects of Surfactants on the Properties of Kudzu (Pueraria Lobata) Starch Films[J]. Journal of Shanghai Jiaotong University, 2012, 46(05): 813-818.

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