四川农业大学学报 ›› 2021, Vol. 39 ›› Issue (4): 549-555.doi: 10.16036/j.issn.1000-2650.2021.04.017

• 园艺·食品科学 • 上一篇    下一篇

以魔芋胶为复配壁材的玉米胚芽油微胶囊制备、表征和效果研究

杨田, 刘莹, 柏婷梅, 陈洪*   

  1. 四川农业大学食品学院,四川 雅安 625014
  • 收稿日期:2020-08-17 出版日期:2021-08-30 发布日期:2021-08-30
  • 通讯作者: *陈洪,教授,博士,主要从事食品营养与健康研究,E-mail:chenhong945@sicau.edu.cn。
  • 作者简介:杨田,硕士研究生。
  • 基金资助:
    四川省科技计划(2018JY0472)

Study on Preparation,Characterization and Effect of Corn Germ Oil Microcapsule with Konjac Gum as Compound Wall Material

YANG Tian, LIU Ying, BAI Tingmei, CHEN Hong*   

  1. College of Food,Sichuan Agricultural University,Ya'an 625014,Sichuan,China
  • Received:2020-08-17 Online:2021-08-30 Published:2021-08-30

摘要: 【目的】探究以大豆分离蛋白(SPI)和魔芋胶(KGM)为壁材包裹玉米胚芽油的微胶囊工艺。【方法】玉米胚芽油因含有丰富的多不饱和脂肪酸,易受到光、温度和氧气等环境因素的破坏。为了延缓玉米胚芽油的氧化劣变,以SPI和KGM作为壁材包裹玉米胚芽油。通过单因素实验和正交实验获得微胶囊最佳包埋工艺,并对微胶囊进行表征和效果研究。【结果】最佳包埋工艺:壁材浓度为10%、魔芋精粉添加量为0.6%、芯壁比为1∶10、均质时间为6 min,所得最佳包埋率为76.4%。获得的微胶囊粉末为表面几乎无孔隙的不规则球形。此外,红外光谱显示KGM和SPI是通过物理作用结合。加速过氧化实验和差示量热扫描曲线表明玉米胚芽油经过包埋之后的稳定性增强。【结论】魔芋胶作为复配壁材有利于微胶囊的包埋。将玉米胚芽油制备成微胶囊粉末有助于延长其货架期,并拓宽其在食品中的应用。

关键词: 玉米胚芽油, 微胶囊, 大豆分离蛋白, 魔芋胶

Abstract: 【Objective】 The purpose of this study was to explore the microencapsulation technology of corn germ oil with soy protein isolate (SPI) and konjac gum (KGM) as wall materials. 【Method】 Corn germ oil is abundant in polyunsaturated fatty acids, which is easy to be oxidized by light, temperature, oxygen, and other environmental factors. SPI and KGM were used as wall materials to wrap corn germ oil in order to protect it from oxidation deterioration. The best embedding technology of microcapsules was obtained through single factor experiment and orthogonal experiment, and performed characterization and effect research on microcapsules. 【Result】 Optimal embedding conditions:the wall material concentration was 10%, the addition amount of KGM was 0.6%, the core-wall ratio was 1∶10, the homogenization time was 6 minutes, and the best encapsulation efficiency was 76.4%. The obtained microcapsule powders were irregular spherical shape with almost no pores on the surface. Infrared spectroscopy showed that KGM and SPI are physically combined. The accelerated peroxidation experiment and the differential calorimetric scanning curve showed that the stability of corn germ oil was enhanced after encapsulating.【Conclusion】 KGM as composite wall material is conducive to the encapsulation of microcapsules. The microcapsules of corn germ oil are helpful to prolong its shelf life and broaden its application in food.

Key words: corn germ oil, microcapsules, soy protein isolate, konjac gum

中图分类号: 

  • TS225.19