패턴인식법에 의한 시판 녹차의 산지 및 채엽시기 추정

패턴인식법에 의한 시판 녹차의 산지 및 채엽시기 추정

Quantitative analysis of (+)-catechin (C), (-)-epigallocatechin (EGC), (-)-epicatechin (EC), (-)-epigallocatechin gallate (EGCG), (-)-epicatechin gallate (ECG) and caffeine in commercial green tea was carried out by HPLC employing gradient elution of 0.1% acetic acid and acetonitrile on ODS column....

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Veröffentlicht in:Yaghag-hoi-ji 2009, 53(2), , pp.51-59
Hauptverfasser: 주홍매, 김정숙, 박경래, 조정원, 김영섭, 김정우, 유시용, 강종성, Zhu, Hong-Mei, Kim, Jung-Sook, Park, Kyung-Lae, Cho, Cheong-Weon, Kim, Young-Sup, Kim, Jung-Woo, Ryu, Shi-Yong, Kang, Jong-Seong
Format: Artikel
Sprache:kor
Schlagworte:
약학
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Zusammenfassung:Quantitative analysis of (+)-catechin (C), (-)-epigallocatechin (EGC), (-)-epicatechin (EC), (-)-epigallocatechin gallate (EGCG), (-)-epicatechin gallate (ECG) and caffeine in commercial green tea was carried out by HPLC employing gradient elution of 0.1% acetic acid and acetonitrile on ODS column. The optimized HPLC method provided satisfactory linearity, accuracy and precision. The relationship between the concentration of the components and cultivated region of the commercial green tea was not significant, while the concentration of EGCG, ECG and caffeine decreased significantly in the later harvested green tea samples (p
ISSN:0377-9556
2383-9457