Analysis of Anthocyanin Composition and Content Contained from Grains of the Korean Purple Rice Varieties by Liquid Chromatography with Diode Array Detection and Electrospray Ionization/Mass Spectrometry(LC-DAD-ESI/MS)
LC-DAD-ESI/MS를 이용하여 국내 자색벼 품종에 대해 개별 안토시아닌 조성 및 함량을 평가한 결과는 다음과 같다.
1. 자색벼 품종에서 분리된 모든 개별 안토시아닌의 화학구조는 MS fragment 패턴을 확인하여 cyanidin을 base로 한 unknown 화합물 1종을 포함, cyanidin 3,5-diglucoside, cyanidin 3-glucoside, peonidin 3-glucoside의 총 4가지 개별성분이 분리 및 동정되었다.
2. Cyanidin 3-glucoside 및 peonidin 3-glucoside이 주요성분으로 cyanidin 3-glucoside의 경우 90% 이상의 가장 높은 함량 비중을 나타냈으며, 개별성분별 평균 함량은 cyanidin 3-glucoside > peonidin 3-glucoside > cyanidin 3,5-diglucoside > unknown(cyanidin based)의 순으로 나타났다.
3. 흑진주벼의 총 안토시아닌 함량은 408 mg/100 g으로 흑남벼보다 약 6배 정도 높은 함량을 나타내었다.
The content and composition of anthocyanin were determined in grains of the Korean purple rice varieties using liquid chromatography with diode array detection and electrospray ionization/mass spectrometry (LC-DAD-ESI/MS). Isolated individual anthocyanins were identified and confirmed as cyanidin 3,5-diglucoside, cyanidin 3-glucoside, peonidin 3-glucoside and unknown compound with cyanidin based by interpretation MS fragments. Among them cyanidin 3-glucoside and peonidin 3-glucoside were major components. Especially, cyanidin 3-glucoside showed highest proportion and the anthocyanin contents were found to be significantly higher in Heugjinjubyeo(408 mg/100 g) than in other variety.