Variables affecting the yields of methyl esters derived from in situ esterification of rice bran oil

Ozgul-Yucel S., TURKAY S.

JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY, vol.79, no.6, pp.611-614, 2002 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 79 Issue: 6
  • Publication Date: 2002
  • Doi Number: 10.1007/s11746-002-0531-5
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.611-614
  • Keywords: esterification, fatty acid, fatty acid methyl esters, in situ esterification, rice bran, rice bran oil, TRANS-ESTERIFICATION, SEED OIL, INSITU
  • Yıldız Technical University Affiliated: No


The influence of specific factors on in situ methanolic esterification of rice bran oil (RBO) using sulfuric acid catalyst was investigated. Using high-FFA rice bran was found to be the most effective means to increase methyl ester yields. The ester content of the extract increased about 67% when the FFA content of oil was increased from 16.6 to 84.5%. Increasing the reaction time beyond 30 min did not affect yields. Increasing the temperature from 20 to 65degreesC elevated the FAME yield by about 30%, but increasing the amount of acid catalyst above 5 mL did not enhance yield, and increasing the methanol dose from 200 to 250 mL had a negligible effect.