食品科学 ›› 2010, Vol. 31 ›› Issue (19): 54-58.doi: 10.7506/spkx1002-6630-201019009

• 基础研究 • 上一篇    下一篇

高温高湿对大豆分离蛋白组分及溶解性的影响

石彦国,宿 晨,孙冰玉,刘洪洪   

  1. 哈尔滨商业大学 黑龙江省食品科学与工程重点实验室
  • 收稿日期:2010-02-03 出版日期:2010-10-15 发布日期:2010-12-29
  • 通讯作者: 石彦国 E-mail:yanguosh@163.com

Effect of Storage under High Temperature and Humidity on the Composition and Solubility of Soy Protein Isolate Packaged in Different Ways

SHI Yan-guo,SU Chen,SUN Bing-yu,LIU Hong-hong   

  1. Heilongjiang Food Science and Engineering Key Laboratory, Harbin University of Commerce, Harbin 150076, China
  • Received:2010-02-03 Online:2010-10-15 Published:2010-12-29
  • Contact: SHI Yan-guo E-mail:yanguosh@163.com

摘要:

采用不同包装形式(100% 氮气铝箔包装、80% 氮气:20% 二氧化碳铝箔包装、60% 氮气:40% 二氧化碳铝箔包装、真空铝箔包装、实际工厂包装(白板纸塑/HDPE)和PE 包装将大豆分离蛋白(SPI)包装后在高温高湿环境(RH 80%、温度30℃)条件下储藏5 个月)。研究储藏环境、时间、包装条件对SPI 的7S/11S、巯基、二硫键及溶解性的影响。结果表明:充气包装中的氮气能够使SPI 的溶解性迅速增加,SPI 功能特性相对保持较好。通过对各包装中SPI 功能特性的比较得出包装材质对温湿度的阻隔性:铝箔包装>工厂包装> PE 包装。通过相关性分析得出,PE 包装中SPI 的7S/11S 比值与其溶解性相关性不显著(0.324),巯基含量与溶解性极显著正相关(0.922)。

关键词: 大豆分离蛋白, 储藏, 溶解性, 包装

Abstract:

During storage and transport, the functional characteristics of soy protein isolate (SPI) may deteriorate, which impacts its industrial applications. In the present study, different packaging ways: packaging in aluminium foil bag vacuumed or filled with 100% nitrogen gas or a mixture of nitrogen gas and carbon dioxide (4:1 or 3:2, V/V), practical industrial packaging (packaging with white paper/plastic/high density polyethylene, HDPE) and polyethylene (PE) packaging were used to package SPI, followed by 5-month storage in high temperature (30 ℃) and humidity (80%) environment in order to address the effects of storage environment and period and packaging conditions on the 7S/11S ratio, sulfhydryl group content, disulfide bond content and solubility of SPI. Nigtrogen-filled packaging promptly increased the solubility of SPI and was beneficial to better maintenance of the functional characteristics of SPI. Comparatively, aluminium foil packaging was the best barrier to humidity, followed by practical industrial packaging and PE packaging. The 7S/11S ratio of PE packaged SPI had no significant correlation with its solubility, but there was a significant positive correlation between its sulfhydryl group content and solubility.

Key words: soy protein isolate (SPI), storage, solubility, packaging

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