Coenzyme Q10 and Q9 contents in 6 commercial vegetable oils and their average daily intakes in Korea

Young-Hee Pyo

                                                                     

Abstract

This study investigated the concentration of coenzyme Q₁₀ (CoQ₁₀) and Q₉ (CoQ₉) in 6 commercial vegetable oils commonly consumed in Korea and estimated the average daily intake of CoQ₉ and CoQ₁₀ from oils selected. The analytical method employed saponification before solvent extraction and quantification using high performance liquid chromatography (HPLC) with a mass spectrometer (LC-MS). Contents of CoQ₉ and CoQ₁₀ in 6 cooking oils varied from 233.7 to 1.4 and from 84.9 to 1.3 μg/g oil, respectively. Maize germ oil was the richest sources of CoQ₉ (233.7±8.2 μg/g), while CoQ₁₀was found the highest contents in perilla oil (84.9±7.6 μg/g). However, the major oil source of CoQ intake in the Korean population was soybean oil (63.0%). The estimated daily intake of total CoQ (Q₉+Q₁₀) was 2.92 mg/day/person.

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Keywords :ubiquinone ,CoQ9 ,CoQ10 ,vegetable oil ,daily intake.