{"title":"韩国绿茶中代谢物的核磁共振定量分析","authors":"Kwang-Ho Choi, Joon-Hwa Lee","doi":"10.6564/JKMRS.2018.22.4.132","DOIUrl":null,"url":null,"abstract":"The plucking season of green tea leaves is one of the important parameters that decide their metabolic quality. Here, we performed the identification and quantity analysis of the metabolites of the green tea using NMR spectroscopy. We assigned the 1H resonances for sixteen metabolites. This analysis found that four metabolites, gallic acid, quinic acid, theobromine and ECG, exhibited clear discrimination of green teas by the three different grades, Ujeon, Sejak and Jungjak. Our results suggest that these four metabolites could be used for diagnostics for quality control of green tea.","PeriodicalId":17414,"journal":{"name":"Journal of the Korean magnetic resonance society","volume":"22 1","pages":"132-138"},"PeriodicalIF":0.4000,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Quantitative analysis of metabolites in Korean green tea using NMR\",\"authors\":\"Kwang-Ho Choi, Joon-Hwa Lee\",\"doi\":\"10.6564/JKMRS.2018.22.4.132\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The plucking season of green tea leaves is one of the important parameters that decide their metabolic quality. Here, we performed the identification and quantity analysis of the metabolites of the green tea using NMR spectroscopy. We assigned the 1H resonances for sixteen metabolites. This analysis found that four metabolites, gallic acid, quinic acid, theobromine and ECG, exhibited clear discrimination of green teas by the three different grades, Ujeon, Sejak and Jungjak. Our results suggest that these four metabolites could be used for diagnostics for quality control of green tea.\",\"PeriodicalId\":17414,\"journal\":{\"name\":\"Journal of the Korean magnetic resonance society\",\"volume\":\"22 1\",\"pages\":\"132-138\"},\"PeriodicalIF\":0.4000,\"publicationDate\":\"2018-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of the Korean magnetic resonance society\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.6564/JKMRS.2018.22.4.132\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"BIOCHEMICAL RESEARCH METHODS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Korean magnetic resonance society","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.6564/JKMRS.2018.22.4.132","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"BIOCHEMICAL RESEARCH METHODS","Score":null,"Total":0}
Quantitative analysis of metabolites in Korean green tea using NMR
The plucking season of green tea leaves is one of the important parameters that decide their metabolic quality. Here, we performed the identification and quantity analysis of the metabolites of the green tea using NMR spectroscopy. We assigned the 1H resonances for sixteen metabolites. This analysis found that four metabolites, gallic acid, quinic acid, theobromine and ECG, exhibited clear discrimination of green teas by the three different grades, Ujeon, Sejak and Jungjak. Our results suggest that these four metabolites could be used for diagnostics for quality control of green tea.
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