The Ultrasound-Assisted Extraction of Rice Bran Oil with n-Hexane as a Solvent

Abstract

Rice bran oil (RBO) is one of edible oil which widely used in chemical, pharmaceutical, and food industries due to its unique properties and high medicinal value. RBO obtained by ultrasound-assisted extraction using n-hexane as solvent. This present study aims to determine the ideal bran to solvent ratio to obtain the highest extraction yield using optimal temperature. Rice bran which 90% passable through a sieve with 700 μm opening, was used for the extraction process. The extraction process was done at various temperature (40, 50, 60°C), and various bran to solvent ratio (1:5, 1:10, 1:15 w/v) for 2 hours at 40 kW. The highest yield ultrasound-assisted extraction was 20.35% with ideal bran to solvent ratio 1:5 w/v using 60°C. The RBO yield increased with increasing bran to solvent ratio and temperature at the isobaric condition.