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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2009.10
- 수록면
- 1,212 - 1,217 (6page)
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This study examined the influence of manufacturing processes and extraction conditions on the chemical compositions of green tea. Green tea samples grown in various areas (Korea, China, and Japan) and processed by 4 different methods (steaming, pan-firing, steaming and pan-firing, and heavy roasting after steaming and pan-firing) were collected for study. The chemical compositions of the green tea extracts and infusions were different according to their processing methods and extraction conditions, including catechins, caffeine, and free amino acids contents. In all samples analyzed, (?)-epigallocatechin gallate (EGCG), (?)-epigallocatechin (EGC), and theanine were determined as the major catechins and free amino acid, respectively. Studies of samples grown in the same area (Jeju; Korea) showed that there were significant differences in the concentrations of catechins and caffeine in extract and infusion according to the processing methods. These results indicate that processing methods influenced the chemical compositions of the green tea extracts and infusions.
목차
Abstract
Introduction
Materials and Methods
Results and Discussion
Acknowledgments
References
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UCI(KEPA) : I410-ECN-0101-2013-573-000874390