食品科学 ›› 2009, Vol. 30 ›› Issue (6): 102-105.doi: 10.7506/spkx1002-6630-200906019

• 工艺技术 • 上一篇    下一篇

O/W型中链脂肪酸微乳的制备及其性质研究

刘玮琳,刘成梅* ,刘 伟,陈红兰,刘建华   

  1. 南昌大学 食品科学与技术国家重点实验室
  • 收稿日期:2008-05-17 修回日期:2008-06-24 出版日期:2009-03-15 发布日期:2010-12-29
  • 通讯作者: 刘成梅 E-mail:chengmeiliu@yaoo.com.cn
  • 基金资助:

    教育部“长江学者和创新团队发展计划”项目(IRT0540)

Study on Preparation of O/W MCFA Micro-emulsion and Its Characteristics

LIU Wei-lin,LIU Cheng-mei*,LIU Wei,CHEN Hong-lan,LIU Jian-hua   

  1. (State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China)
  • Received:2008-05-17 Revised:2008-06-24 Online:2009-03-15 Published:2010-12-29
  • Contact: LIU Cheng-mei*, E-mail:chengmeiliu@yaoo.com.cn

摘要:

以中链脂肪酸(MCFA)为原料,采用自微乳化法(HLB 值法)制备O/W 型中链脂肪酸微乳。考察了滴定方法,确定用蒸馏水滴定MCFA、表面活性剂和助表面活性剂三组分的混合物为最佳;比较乳化效率和伪三元相图中形成微乳面积的大小,得到MCFA 的最适HLB 值为15,最佳表面活性剂为单独使用吐温-80,最佳Km 值为2:1,最佳助表面活性剂是异戊醇。通过测定和评价微乳样品的各种性质,优化出最佳配方为MCFA:吐温-80:异戊醇:蒸馏水=3:2:1:0.68,表面张力可达到26.7142mN/cm,黏度65.22cP,电导率1.87μs/cm,平均粒径17.3nm,Zeta 电位- 7.14mV,初步稳定性良好。

关键词: 中链脂肪酸, 微乳, 伪三元相图

Abstract:

In this study, self-emulsification method (HLB method) was taken to prepare O/W medium-chain fatty acid (MCFA) micro-emulsions. By means of titration method, it indicated that the titration of the compound of MCFA, surfactant and cosurfactant with distilled water is the best. Through comparison of emulsification efficiency and micro-emulsion area in pseudoternary phase diagram, it was found that the optimal HLB, surfactant, Km value and co-surfactant are 15, single Tween-80, 2:1 and iso-amyl alcohol, respectively. According to the estimation of characteristics of micro-emulsion samples, the formula was optimized as MCFA, Tween-80, iso-amyl alcohol and distilled water in the mass ratios of 3:2:1:0.68. The surface tension, viscidity, conductance, particle size and zeta potential of the obtained micro-emulsion are 26.7142 mN/cm, 65.22 cP, 1.87 μs/cm, 17.3 nm and -7.14 mV, respectively, and its stability is good.

Key words: MCFA, micro-emulsion, pseudo-ternary phase diagram

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