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KCI등재 학술저널

한국 재래종 차나무(Camellia sinensis)의 작물학적 특성 및 품질관련 성분 변이

Variation of Growth Characteristics and Quality Related Components in Korean Indigenous Tea (Camellia sinensis) Germplasms

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The tea has traditionally been used as a food-stuff by unique flavor, however recently not only the diver-sity of consumer demands but also the public interest in unique favorite and functional aspects have increased. It has been also reported that the main components contained in the leaves of tea (Camellia sinensis) include total nitro-gen, free amino acids, polyphenols, and fiber, of which catechin has powerful bioactive effect such as anti-cancer, anti-aging, and anti-diabetic. (-)-Epigallocatechin gallate (EGCG) which is a major phenolic constituent of green tea extract has received considerable attention for a variety of im-portant bioactivities. This study was carried out to obtain useful information for tea breeding programs, and to inve-stigate the concentration of quality and functional related components in Korean indigenous tea germplasms. Korean indigenous tea lines were classified into three groups of sprout time, i.e, early, medium and late sprout time, and the ratio were 20%, 43% and 37%, respectively. There was a difference in characteristics among these Korean indi-genous tea lines, leaf width of those ranged from 19.8 to 75 mm, leaf length was 35.5-160.0 mm, and leaf area was 660-8,400 mm2. Experimental data on chlorophyll content (SPAD value) of Korean indigenous tea genetic resources ranged from 51.3 to 82.3. The concentrations of the total nitrogen, total free amino acids, and theanine were ranged 4.18-6.07%, 2.87-4.58%, and 1.64-2.66%, respectively. Also, catechin concentration showed from 11.54 to 15.07%, and concentration of caffeine was 2.82-4.23%. These results indi-cated that it is possible to select elite lines with high con-centration of quality related components and low concen-tration of caffeine from Korean domestic tea germplasms.

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