Immobilized lipase-catalyzed esterification for synthesis of trimethylolpropane triester as a biolubricant

被引：56

作者：

Kim, Heejin ^{[1
]}

Choi, Nakyung ^{[2
]}

Kim, Yangha ^{[3
]}

Kim, Hak-Ryul ^{[4
]}

Lee, Junsoo ^{[5
]}

Kim, In-Hwan ^{[1
,2
]}

机构：

[1] Korea Univ, Grad Sch, Dept Publ Hlth Sci, 145 Anam Ro, Seoul 02841, South Korea

[2] Korea Univ, Grad Sch, Dept Integrated Biomed & Life Sci, 145 Anam Ro, Seoul 02841, South Korea

[3] Ewha Womans Univ, Dept Nutr Sci & Food Management, Seoul 03760, South Korea

[4] Kyungpook Natl Univ, Sch Food Sci & Biotechnol, Daegu 702701, South Korea

[5] Chungbuk Natl Univ, Div Food & Anim Sci, Cheongju 28644, Chungbuk, South Korea

来源：

RENEWABLE ENERGY | 2019年 / 130卷

关键词：

Biolubricant; Duolite A568; Immobilized lipase; Thermomyces lanuginosus; Trimethylolpropane triester; CONJUGATED LINOLEIC-ACID; SOLVENT-FREE SYSTEM; WATER ACTIVITY; TRIACYLGLYCEROL; LUBRICANTS; OIL; INTERESTERIFICATION; RESIDUES; VACUUM;

D O I：

10.1016/j.renene.2018.06.092

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Synthetic oleochemical esters of polyols and fatty acids are biodegradable and possess desirable technical and ecological properties. Trimethylolpropane (TMP) triester has been widely applied as a hydraulic fluid. TMP triester was effectively synthesized by lipase-catalyzed esterification from TMP and high oleic fatty acid from palm oil using an immobilized lipase. The immobilized lipase was prepared with liquid Lipozyme TL 100 L from Thermomyces tanuginosus with Duolite A568 as a carrier. The effects of temperature, enzyme loading, vacuum level, and water activity of the enzyme on the synthesis of TMP triester were investigated. The optimum temperature, enzyme loading, and vacuum level were 60 degrees C. 15% (based on total substrate), and 6.7 kPa, respectively. The optimum water activity range of the enzyme was 0.5-0.9. Under the optimum conditions, the maximum conversion reached up to 95% after 9 h. No significant differences in physical properties were observed between TMP triester from this study and a commercial TMP triester prepared by chemical catalyst. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：489 / 494

页数：6

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