|JKMRS Volume 21, No 4, pp 119; NMR Metabolomic Profiles for Qu...|
|2017년 12월 21일 / 조회수: 214|
NMR Metabolomic Profiles for Quality Control of Korean Green Tea (Camellia sinensis) Classified by the Plucking Season
Kwang-Ho Choi1, Ji Su Park2, Hyeon Su Kim2, Ye Hun Choi2, Jun Hyeok Jeon2 and Joon-Hwa Lee1,*
1Department of Chemistry and RINS, Gyeongsang National University, Jinju, Gyeongnam 52828, South Korea
2Gyeongnam Science High School, Jinju, Gyeongnam 52620, South Korea
Abstract The plucking season of green tea leaves is one of the important parameters that decide their metabolic diversity, quality, and prices. The effects of plucking seasons on green tea metabolites were investigated through metabolite profiling by 1H NMR spectroscopy. The orthogonal projection on latent structure-discriminant analysis (OPLS-DA) showed clear discriminations of green teas by three different grades depending on plucking seasons: Ujeon, Sejak, and Jungjak. These results suggested that the nine peak groups could be used for diagnostics for identification of high quality Ujeon grade of green tea.