Abstract
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 lanuginosus 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 °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.
| Original language | English |
|---|---|
| Pages (from-to) | 489-494 |
| Number of pages | 6 |
| Journal | Renewable Energy |
| Volume | 130 |
| DOIs | |
| Publication status | Published - 2019 Jan 1 |
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Keywords
- Biolubricant
- Duolite A568
- Immobilized lipase
- Thermomyces lanuginosus
- Trimethylolpropane triester
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
Cite this
Immobilized lipase-catalyzed esterification for synthesis of trimethylolpropane triester as a biolubricant. / Kim, Heejin; Choi, Nakyung; Kim, Yangha; Kim, Hak Ryul; Lee, Junsoo; Kim, In-Hwan.
In: Renewable Energy, Vol. 130, 01.01.2019, p. 489-494.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Immobilized lipase-catalyzed esterification for synthesis of trimethylolpropane triester as a biolubricant
AU - Kim, Heejin
AU - Choi, Nakyung
AU - Kim, Yangha
AU - Kim, Hak Ryul
AU - Lee, Junsoo
AU - Kim, In-Hwan
PY - 2019/1/1
Y1 - 2019/1/1
N2 - 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 lanuginosus 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 °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.
AB - 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 lanuginosus 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 °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.
KW - Biolubricant
KW - Duolite A568
KW - Immobilized lipase
KW - Thermomyces lanuginosus
KW - Trimethylolpropane triester
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UR - http://www.scopus.com/inward/citedby.url?scp=85049884890&partnerID=8YFLogxK
U2 - 10.1016/j.renene.2018.06.092
DO - 10.1016/j.renene.2018.06.092
M3 - Article
VL - 130
SP - 489
EP - 494
JO - Renewable Energy
JF - Renewable Energy
SN - 0960-1481
ER -