제주지역 차나무(Camellia sinensis L.) 품종별 차기와 생육단계에 따른 품질특성 변화

• 영문명: Changes in Quality Characteristics of Different Cultivars at Different Tea Seasons and Shoot Growth Stages in Jeju
• 발행기관: 한국차학회
• 저자명: 송인관(In Kwan Song) 오은의(Eun Ui Oh) 김봉찬(Bong Chan Kim) 김권수(Kean Soo Kim) 윤정희(Jeong Hee Yoon) 김찬식(Chan-Shick Kim) 송관정(Kwan Jeong Song)
• 간행물 정보: 『한국차학회지』제17권 제1호, 41~47쪽, 전체 7쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2011.04.30

영문 초록

This study was conducted to evaluate tea quality in some cultivars at different tea seasons and shoot growth stages in Jeju, Korea. Tea quality components from three cultivars of Saemidori (early maturing), Yabukita (middle maturing), and Hushun (late maturing) were determined by NIR analysis at three tea seasons from 1st to 3rd crop with five growth stages from one and a bud to five and a bud. Changes in total free amino acid and threonine contents showed similar tendencies, and these contents were the highest at the 1st crop and decreased gradually with growth stages. Total cathechin content was the lowest at the 1st crop and declined with growth stages. Caffeine content was similar at the 1st and 3rd crops and showed a tendency of gradual decrease with growth stages. Tannin content was slightly different among the three tea seasons and decreased with growth stages. Vitamin C content was the highest and increased with growth stages at the 1st crop, whereas it was similar at all growth stages of the 2nd and 3rd crops. There were no differences in crude fiber content between the different tea seasons, whereas it increased gradually with growth stages. Cultivars showed significant differences in contents of these components with different tea seasons and shoot growth stages. The results indicate that tea seasons, shoot growth stages, and cultivars could be major factors affecting tea quality.

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free amino acids caffeine cathechin fiber theanine