In situ lipase-catalyzed transesterification in rice bran for synthesis of fatty acid methyl ester

Nakyung Choi; Da Som No; Heejin Kim; Byung Hee Kim; Jieun Kwak; Jeom Sig Lee; In Hwan Kim

doi:10.1016/j.indcrop.2018.04.049

In situ lipase-catalyzed transesterification in rice bran for synthesis of fatty acid methyl ester

Nakyung Choi, Da Som No, Heejin Kim, Byung Hee Kim, Jieun Kwak, Jeom Sig Lee, In Hwan Kim

Department of Public Health Sciences

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

Fatty acid methyl ester (FAME) were synthesized via in situ lipase-catalyzed transesterification in rice bran without additional catalyst. With this method, FAME were synthesized directly from oil in rice bran by simply adding methanol, with the aid of rice bran lipase already existing in rice bran. The effects of temperature, molar ratio (oil in rice bran to methanol), and water content of the rice bran were investigated. The yield of FAME and the free fatty acid content were monitored as a function of reaction time. The optimum conditions were a temperature of 40 °C, a molar ratio of 1:6, and a water content of 12%. Under the optimum conditions, the FAME yield of 83.4 wt% was obtained after 12 days. To further increase the FAME yield, the transesterification was repeated using the rice bran obtained from the first transesterification. The oils in rice bran that could be converted to FAME were completely transformed throughout the repeated transesterification.

Original language	English
Pages (from-to)	140-146
Number of pages	7
Journal	Industrial Crops and Products
Volume	120
DOIs	https://doi.org/10.1016/j.indcrop.2018.04.049
Publication status	Published - 2018 Sept 15

Bibliographical note

Funding Information:
This work was carried out with the support of “Cooperative Research Program for Agriculture Science & Technology Development (Project title: Evaluation of quality and processing property of long-term stored rice, Project No. PJ011037)" Rural Development Administration, Republic of Korea .

Publisher Copyright:
© 2018 Elsevier B.V.

Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.

Keywords

Biodiesel
In situ
Repeated transesterification
Rice bran lipase

ASJC Scopus subject areas

Agronomy and Crop Science

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10.1016/j.indcrop.2018.04.049

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title = "In situ lipase-catalyzed transesterification in rice bran for synthesis of fatty acid methyl ester",

abstract = "Fatty acid methyl ester (FAME) were synthesized via in situ lipase-catalyzed transesterification in rice bran without additional catalyst. With this method, FAME were synthesized directly from oil in rice bran by simply adding methanol, with the aid of rice bran lipase already existing in rice bran. The effects of temperature, molar ratio (oil in rice bran to methanol), and water content of the rice bran were investigated. The yield of FAME and the free fatty acid content were monitored as a function of reaction time. The optimum conditions were a temperature of 40 °C, a molar ratio of 1:6, and a water content of 12%. Under the optimum conditions, the FAME yield of 83.4 wt% was obtained after 12 days. To further increase the FAME yield, the transesterification was repeated using the rice bran obtained from the first transesterification. The oils in rice bran that could be converted to FAME were completely transformed throughout the repeated transesterification.",

keywords = "Biodiesel, In situ, Repeated transesterification, Rice bran lipase",

author = "Nakyung Choi and No, {Da Som} and Heejin Kim and Kim, {Byung Hee} and Jieun Kwak and Lee, {Jeom Sig} and Kim, {In Hwan}",

note = "Funding Information: This work was carried out with the support of “Cooperative Research Program for Agriculture Science & Technology Development (Project title: Evaluation of quality and processing property of long-term stored rice, Project No. PJ011037){"} Rural Development Administration, Republic of Korea . Publisher Copyright: {\textcopyright} 2018 Elsevier B.V. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.",

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doi = "10.1016/j.indcrop.2018.04.049",

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T1 - In situ lipase-catalyzed transesterification in rice bran for synthesis of fatty acid methyl ester

AU - Choi, Nakyung

AU - No, Da Som

AU - Kim, Heejin

AU - Kim, Byung Hee

AU - Kwak, Jieun

AU - Lee, Jeom Sig

AU - Kim, In Hwan

N1 - Funding Information: This work was carried out with the support of “Cooperative Research Program for Agriculture Science & Technology Development (Project title: Evaluation of quality and processing property of long-term stored rice, Project No. PJ011037)" Rural Development Administration, Republic of Korea . Publisher Copyright: © 2018 Elsevier B.V. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.

PY - 2018/9/15

Y1 - 2018/9/15

N2 - Fatty acid methyl ester (FAME) were synthesized via in situ lipase-catalyzed transesterification in rice bran without additional catalyst. With this method, FAME were synthesized directly from oil in rice bran by simply adding methanol, with the aid of rice bran lipase already existing in rice bran. The effects of temperature, molar ratio (oil in rice bran to methanol), and water content of the rice bran were investigated. The yield of FAME and the free fatty acid content were monitored as a function of reaction time. The optimum conditions were a temperature of 40 °C, a molar ratio of 1:6, and a water content of 12%. Under the optimum conditions, the FAME yield of 83.4 wt% was obtained after 12 days. To further increase the FAME yield, the transesterification was repeated using the rice bran obtained from the first transesterification. The oils in rice bran that could be converted to FAME were completely transformed throughout the repeated transesterification.

AB - Fatty acid methyl ester (FAME) were synthesized via in situ lipase-catalyzed transesterification in rice bran without additional catalyst. With this method, FAME were synthesized directly from oil in rice bran by simply adding methanol, with the aid of rice bran lipase already existing in rice bran. The effects of temperature, molar ratio (oil in rice bran to methanol), and water content of the rice bran were investigated. The yield of FAME and the free fatty acid content were monitored as a function of reaction time. The optimum conditions were a temperature of 40 °C, a molar ratio of 1:6, and a water content of 12%. Under the optimum conditions, the FAME yield of 83.4 wt% was obtained after 12 days. To further increase the FAME yield, the transesterification was repeated using the rice bran obtained from the first transesterification. The oils in rice bran that could be converted to FAME were completely transformed throughout the repeated transesterification.

KW - Biodiesel

KW - In situ

KW - Repeated transesterification

KW - Rice bran lipase

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ER -

In situ lipase-catalyzed transesterification in rice bran for synthesis of fatty acid methyl ester

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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