Enrichment of tocols from rice germ oil using supercritical carbon dioxide

Soon Nam Ko, Tae Yeoul Ha, Seung In Hong, Sung Won Yoon, Junsoo Lee, Yangha Kim, In Hwan Kim

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

An efficient process was developed for enrichment of tocols from rice germ oil (RGO) using supercritical carbon dioxide (SC-CO 2). Tocols were efficiently enriched in residue by removal of fatty acid methyl ester from the esterified RGO using SC-CO 2. The enrichment of tocols was carried out at an operating pressure of 12.4-15.8MPa, an operating temperature of 40-60°C and a carbon dioxide flow rate of 5.0Lmin -1. The combination of 13.8MPa pressure and 60°C temperature was selected as the most suitable for efficient enrichment of tocols. The level of tocols (1270mg/100g) in the residue obtained at these operating conditions was six times higher than the tocols level (192mg/100g) of the starting material, namely esterified RGO. There were no significant differences in relative percentages of tocols homologues between esterified RGO and the residue obtained by SC-CO 2 extraction.

Original languageEnglish
Pages (from-to)761-767
Number of pages7
JournalInternational Journal of Food Science and Technology
Volume47
Issue number4
DOIs
Publication statusPublished - 2012 Apr

Keywords

  • Enrichment
  • Rice germ oil
  • Supercritical carbon dioxide
  • Tocols
  • Tocopherol
  • Tocotrienol

ASJC Scopus subject areas

  • Food Science
  • Industrial and Manufacturing Engineering

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