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日用化学工业（中英文）

日用化学工业 ›› 2019, Vol. 49 ›› Issue (12): 783-789.doi: 10.3969/j.issn.1001-1803.2019.12.003

• 开发与应用 • 上一篇    下一篇

乳清蛋白-鼠李糖脂混合生物乳化剂的性能研究

张国瑞1,2,宋永亭3,包木太1,2,汪卫东3,李希明3   

  1. 1. 中国海洋大学 海洋化学理论与工程技术教育部重点实验室/海洋高等研究院,山东 青岛 266100
    2. 中国海洋大学 化学化工学院,山东 青岛 266100
    3. 中国石油化工股份有限公司 胜利油田分公司 石油工程技术研究院,山东 东营 257000
  • 收稿日期:2019-03-21 修回日期:2019-11-24 出版日期:2019-12-22 发布日期:2019-12-24
  • 作者简介:张国瑞（1994-）,男,汉族,山东人,硕士。
  • 基金资助:
    山东省自然科学面上基金项目资助(ZR2018MD017);中央高校基本科研业务费国家重大项目培育项目资助(201822009)

Study of the performance of mixed whey protein-rhamnolipid bioemulsifier

ZHANG Guo-rui1,2,SONG Yong-ting3,BAO Mu-tai1,2,WANG Wei-dong3,LI Xi-ming3   

  1. 1. Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education/Institute for Advanced Ocean Study, Ocean University of China, Qingdao, Shandong 266100, China
    2. College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong 266100, China
    3. Petroleum Engineering Technology Research Institute, Shengli Oilfield Company, Sinopec, Dongying, Shandong 257000, China
  • Received:2019-03-21 Revised:2019-11-24 Online:2019-12-22 Published:2019-12-24

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摘要：

制备了不同比例组合的乳清蛋白和鼠李糖脂混合体系,对其乳化性质（0 #柴油为底物烃）进行了研究。结果表明：同等质量浓度下,混合物表现出比单独乳清蛋白和鼠李糖脂更好的乳化活性,说明二者有很好的乳化协同作用,鼠李糖脂组分的增加还可以有效降低乳状液的平均粒径。研究了不同环境条件下混合体系的乳化活性,结果显示混合物在中性及碱性条件下拥有显著提高的乳化活性;乳清蛋白和鼠李糖脂质量比为2∶1和1∶1的混合物在1.5%和2.5%的氯化钠含量下也表现出显著提高的乳化活性;同时混合物对3种不同的底物烃均能有效乳化。对Zeta电位和界面性质进行了研究,发现相比于单一组分,混合物胶束粒子的负Zeta电势减弱,而少量鼠李糖脂的加入即可显著提高混合物的界面活性以及润湿性。

关键词: 混合体系, 乳化活性, 界面性质, 乳清蛋白, 鼠李糖脂

Abstract:

The mixed systems of whey protein and rhamnolipid at different ratios were prepared, and their emulsifying properties（0 # diesel as a substrate hydrocarbon）were studied. The results showed that, at the same mass concentration, the mixture showed better emulsifying activity than pure whey protein or rhamnolipid, indicative of good emulsification synergism. The increase of rhamnolipid component therein can also effectively reduce the mean particle size of the emulsion. The emulsifying activity of the mixture under different conditions was studied, which showed that the mixture has significantly improved emulsifying activity under neutral and alkaline conditions; the mixtures of whey protein and rhamnolipid with mass ratio of 2∶1 and 1∶1 also show significantly improved emulsifying activity at 1.5% and 2.5% NaCl contents; Moreover, the mixture is effective in the emulsification of three different substrate hydrocarbons. The Zeta potential and interfacial properties are investigated. It was found that the negative Zeta potential of the mixed micelle particles is weakened compared with the individual components, and the addition of a small amount of rhamnolipid significantly increases the interfacial activity and wettability of the mixture.

Key words: mixed system, emulsifying activity, interfacial property, whey protein, rhamnolipid

中图分类号: 

  • TQ423