食品科学

• 工艺技术 • 上一篇    下一篇

层层自组装法制备百里香精油微胶囊条件优化

黄 晶,申莉莉,白友菊,马治灿,陈加平,冯 武   

  1. 华中农业大学食品科学技术学院,湖北 武汉 430070
  • 出版日期:2016-01-25 发布日期:2016-01-15
  • 通讯作者: 冯 武
  • 基金资助:

    华中农业大学预研项目(52209-814010)

Condition Optimization for Thyme Oil Microcapsules Prepared by Layer-by-Layer Self-Assembly Method

HUANG Jing, SHEN Lili, BAI Youju, MA Zhican, CHEN Jiaping, FENG Wu   

  1. College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
  • Online:2016-01-25 Published:2016-01-15
  • Contact: FENG Wu

摘要:

采用层层自组装的方法,以百里香精油乳化液纳米微粒作为核心,利用壳聚糖和海藻酸钠对百里香精油进行包埋;以司盘80和吐温60复配乳化剂亲水亲油平衡(hydrophilic lipophilic balance,HLB)值、用量及油乳比例3 个因素进行实验,确定乳化液最适制备条件;以壁材溶液质量浓度、组装层数、每层组装时间、搅拌速率、组装温度、壁材溶液pH值和固化剂用量进行单因素试验,以主要因素设计正交试验,确定最佳包埋条件。结果表明,乳化液制备条件为HLB值10、乳化剂用量6%、精油与乳化剂体积比1∶6,此条件下所制备的乳化微粒为模板,组装层数4 层、搅拌速率1 040 r/min、每层组装时间15 min、壁材溶液pH 5.0、组装温度30 ℃,此条件下包埋率最高为80.23%。

关键词: 层层自组装, 微胶囊, 百里香精油, 正交试验, 包埋率

Abstract:

In this work, using thyme oil emulsion nanoparticles as the core, chitosan (CS) and sodium alginate (ALG) were
employed for embedding thyme essential oil by a layer-by-layer self-assembly method. Three emulsification conditions
including HLB (hydrophilic lipophilic balance) value of 1:1 mixture of Span 80 and Tween 60, emulsifier concentration and
ratio of oil to emulsifier were optimized to be 10, 6% and 1:6, respectively. The maximum microencapsulation efficiency
of 80.23% was obtained when self-assembly of the emulsion particles in four layers by alternate use of CS and ALG was
conducted for 15 min at 30 ℃ with stirring at a speed of 1 040 r/min, as determined by orthogonal array design.

Key words: self-assembly, microcapsule, thyme oil, orthogonal array design, embedding rate

中图分类号: