Determination of tocopherol contents in refined edible oils using an HPLC method

Jiang Ning Hu, Xue Mei Zhu, Prakash Adhikari, Dan Li, In Hwan Kim, Ki Teak Lee

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A high-performance liquid chromatography method was applied to determine the contents of tocopherols in edible oils using a LiChrosorb DIOL HPLC column and hexane fortified with 0.1% acetic acid in an isocratic mode. The validation of the method included tests for linearity, sensitivity, accuracy, precision, and recovery. All calibration curves showed good linear regression (r 2>0.9995) within the tested ranges. The established method offered good precision and accuracy with overall intra-day and inter-day variations of 0.94∼4.27 and 1.77∼4.88%, respectively. The tocopherol recoveries ranged from 91.44∼108.90%. Subsequently, the method was successfully applied to qualitatively and quantitatively determine the total contents of α, γ, and δ-tocopherols in 12 selected refined edible oils, showing a range of 0.92 to 188.71 mg/100 g.

Original languageEnglish
Pages (from-to)260-264
Number of pages5
JournalJournal of Food Science and Nutrition
Volume14
Issue number3
DOIs
Publication statusPublished - 2009

Keywords

  • HPLC separation
  • Refined edible oils
  • Tocopherols

ASJC Scopus subject areas

  • Food Science
  • Nutrition and Dietetics

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