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Preparation of Inverse Microemulsion Loaded with Tea Polyphenols

SUN Jing-jing, LIU Jian-hua, WANG Zhong-ni, WANG Zheng-wu   

  1. 1. School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, China;
    2. College of Chemistry and Chemical Engineering, Yibin University, Yibin 644000, China;
    3. College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
  • Online:2014-07-15 Published:2014-07-18

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Abstract:

Water in oil (W/O) microemulison (ME) of linoleic acid/ethanol/H2O to envelop tea polyphenols was prepared.
The ternary phase diagram, electrical conductivity, particle size, rheological behavior and oxidation resistance ability of the
microemulison were investigated. The results showed that the W/O microemulsion was formed when linoleic content was
above 24%. This ME, characterized as pseudoplastic and temperature thixotropy, had an uniform particle size. It was found
by determining peroxide value that compared with the blank, the inhibition rates of linoleic acid oxidation for microemulsion
with adding 0.01 and 0.1mg/mL tea polyphenols were 68.32% and 92.42%, respectively.
Key words: linoleic acid; tea polyphenols; inverse microemulsion; antioxidant