제주지역 차나무(Camellia sinensis L.)의 차기별 생육단계에 따른 신초의 연차적 품질특성 = Characteristics of Tea Shoot Quality in Yearly Variation at Different Harvesting Seasons and Growth Stages in Jeju

국문 초록 (Abstract)

제주지역 환경조건에서의 차 품질에 영향하는 요인을 평가하고자 차기별 신초의 생육단계에 다른 품질관련 성분특성을 분석하였다. 중생종 야부기다 품종을 이용하였으며, 신초의 생육단계를 1심 1엽기부터 1심 5엽기까지 5단계로 구분하였다. 총 유리아미노산과 데아닌 함량 변화는 3개년 모두 1번차가 가장 높게 나타났고, 생육단계에서는 채엽이 늦어질수록 점차 감소하는 경향을 나타냈다. 연차간 변화는 2011년도에는 2번차가 가장 낮았던 반면, 2010년도에는 2번차와 3번차에서 가장 낮게 나타났다. 카테킨 함량은 3개년 모두 생육단계가 진행되어 채엽이 늦어질수록 감소하는 경향이었고, 수확기 간에는 아미노산과는 달리 2번차에서 가장 높았다. 카페인 함량은 3년 동안 1번차에서 가장 높게 나타났고, 생육단계에 따라서는 1심 1엽에서 가장 높았고, 1심 5엽으로 생육이 진행됨에 따라 뚜렷이 낮아지는 경향을 보였다. 탄닌 함량 변화는 생육이 진행될수록 함량은 감소하는 경향이 뚜렷하였으나, 비타민 C의 함량은 거의 변화가 없었으며, 조섬유의 함량은 뚜렷이 증가하는 경향이었다. 연차적 변이는 탄닌, 비타민 C, 조섬유 함량 모두 매우 적은 것으로 나타났다.

다국어 초록 (Multilingual Abstract)

This study was conducted to evaluate factors affecting tea quality with analyzing shoot quality in'Yabukita' cultivar at different harvesting seasons and shoot growth stages. Shoot growth stage consisted of five growth stages from one and a bud to five, respectively for a cultivar of ‘Yabukita’ (middle maturing) grown at Jeju, Korea. In evaluating yearly variation for three years in shoot quality of ‘Yabukita’, tendencies of component contents with different growth stages and harvesting seasons were so similar. Total free amino acids and theanine contents were the highest at the 1st crop and declined as growth stages proceeded for three years, whereas the lowest at the 2nd crop in the year of 2009 and 2010 and at the 2nd and 3rd crop in the year of 2010. Total catechins contents declined as growth stages proceeded for three years and was the highest at the 2nd crop. Caffeine contents had similar tendency to catechins with different growth stages, but the highest at the 1st crops for three years. There was distinctive decrease in tannin contents, whereas not fluctuant in vitamin C contents and distinctive increase in crude fiber contents. Tannin, vitamin C, and crude fiber were components having very small yearly variation in contents with different growth stages and harvesting seasons.

목차 (Table of Contents)

• Abstract
• 서론
• 재료 및 방법
• 결과 및 고찰
• 적요
• 참고문헌

참고문헌 (Reference)

1 신미경, "차와 웰빙문화" 제주녹차협력단 25-36, 2007

2 김영경, "녹차의 기능성과 활용" 제주녹차협력단 9-32, 2009

3 村松敬一郞, "茶の科學" 朝倉書店 32-40, 1991

4 Ikeda N, "Yearly changes in contents of chemical constituents in first flushes of tea cultivars" 71 : 511-517, 2006

5 Saba T, "Varietal differences in growth and amino acid content of new shoots under some levels of fertilizer application in nursery tea plants" 64 : 50-52, 1998

6 Ikeda N, "Varietal difference of chemical constituents in first and autumn flushes of tea plants" 77 : 13-21, 1993

7 Kim JW, "The current status of tea cultivation in Korea" 2 (2): 209-216, 1996

8 Chaturvedula VSP, "The aroma, taste, color, and bioactive constituents of tea" 5 : 2110-2124, 2011

9 Muramas. KI, "The Science of Tea" Jochang Bookstore 185-188, 1994

10 Tanaka S, "Relationship between plucking time and the quality ofgreen tea" 3 : 55-64, 1989

11 Park JH, "Distribution of the chemical constituents in differentparts of tea shoots for Okro" 5 (5): 89-97, 1999

12 Chun JU, "Classification of Korean native tea tree germplasm based on chemical components" 9 (9): 103-111, 2003

13 Anan T, "Changes in chemical components during the development of tea shoots and manufacture of green tea" 4 : 25-91, 1991

14 Lee SH, "Change of chemical components of tea due to plucking season during cultivation in greenhouse" 10 (10): 64-73, 2004

15 Iwasa, K, "Biosynthesis of catechins in tea plant" 13 : 101-126, 1977

16 Cabrera C, "Beneficial effects of green tea-a review" 25 : 79-99, 2006