|
KMID : 1098419970050030217
|
|
Korean Journal of Medicinal Crop Science
1997 Volume.5 No. 3 p.217 ~ p.224
|
|
|
Chemical Components of Korean Native Tea Plants
|
|
Park Jang-Hyun
Kim Kwang-Sik
Kim Sun-Woo
Choi Hyoung-Kog
Kim Chang-Chul
|
|
|
Abstract
|
|
|
|
The significant chemical components estimating the quality of green tea were compared and analyzed in the shoots of Korean native tea plants. The results are summarized as follows. The contents of total nitrogen in tea leaves were in range of 3.59{sim}4.89%, and the tea plants grown wildly in Bosong Daewonsa, Hwasun Ssangbongsa, Shunchun Changchun-ri, Hadong Ssanggyesa. and the cultivated tea plants in Kangjin Jangwon Sanup had higher contents of total nitrogen. The contents of tannin ranged from 12.5 to 18.3%. The contents of tannin of Kuryoi Chonunsa (18.3%), Kangjin Baekryonsa (16.7%) and Naju Bulhoisa (16.4%) were higher than those of Yangkwang Chonma-ri (12.5%), Hampyong Yongam-ri (12.7%) and Yosu Udu-ri (12.8%). The contents of caffeine were in range of 2.21{sim}3.11%. The contents of caffeine of Kwangju Shamae Dawon (3.11%), Kangjin Jangwon Sanup (2.94%) and Shunchun Changchun-ri(2.87%) were higher than those of Tamyang Yanggak-ri(2.21%), Yosu Udu-ri(2.23%) and Kuryoi Hwaomsa (2.23%). The contents of vit. C were in range of 167.9{sim}223.5mg/100g. The contents of vit. C of Changsong Oshan-ri (167.9mg/100g), Shunchun Shongkwangsa (185.6mg/100g) and Yongkwang Chonma-ri (185.8mg/100g) were lower than those of Kwangju Shamae Dawon (291.5mg/100g), Kangjin Jangwon Sanup (271.8mg/100g) and Shunchun Changchun-ri (269.5mg/100g). The contents of chlorophyll were in range of 187.4{sim}332.7mg/100g, and the mean contents were in range of 242.0mg/100g. The contents of total amino acids were in range of 1,888{sim}2,500mg/100g. The content of total amino acid at Kangjin Jangwon Sanup was the highest as 2,500mg/100g, and that of Shunchon Shongkwangsa was the lowest as 1,888mg/100g. Results of this study suggest that the native tea plants naturally grown at Bosong Daewonsa, Hwasun Ssangbongsa, Shunchun Changchun-ri, Hadong Ssanggyesa, and the cultivated tea plants at Kangjin Jangwon Sanup show excellent quality in terms of abundance of total nitrogen and total amino acids, and less contents of tannin.
|
|
|
KEYWORD
|
|
|
Korean native tea plant, Green tea quality, Total nitrogen, Tannin, Caffeine, Vit.C, Chlorophyll, Total amino acids
|
|
|
FullTexts / Linksout information
|
|
|
|
|
Listed journal information
|
|
|
|