메뉴 건너뛰기
.. 내서재 .. 알림
소속 기관/학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
로그인 회원가입 고객센터 ENG
주제분류

추천
검색

논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국차학회 한국차학회지 한국차학회지 제21권
발행연도
2015.1
수록면
113 - 120 (8page)

이용수

표지
📌
연구주제
📖
연구배경
🔬
연구방법
🏆
연구결과
AI에게 요청하기
추천
검색

초록· 키워드

오류제보하기
This study was conducted to determine which color attribute change the more during fermentation in tea processing and if relationship between a tea pigment compound and the color index by fermentation level. Fermentation was performed after rolling. Hunter’s color value was measured either by using colorimeter or spectrum color meter. The liquor of finished tea was subjected to chemical analyses for total theaflavins, thearubigin, caffeine, catechin compounds. Hunter color b-value, yellowness, decreased during fermenting process while it was slightly increased at earlier stage. Hunter color a-value, redness, increased from minus value to plus during fermentation. The color b-value was higher than a-value in an earlier fermentation process. The difference Hunter value between b and a decreased gradually as fermentation time was increased, which values meet on a point at a certain fermentation time. After this time, color a-value was higher than the b-value. The result suggested that the color difference value between Hunter b and a can be applied on estimating fermented degree in black tea processing, with a relationship by the equation, ‘Fermentated Degree (%) = Hunter value b - a’. Total theaflavin increased until 30 min fermentation by 91.39 ± 4.80 mg% and then decreased by 36.79 ± 1.90 mg% at 180 min fermentation, while thearubigin increased until 120 min fermentation by 63.1 ± 1.92 mg% and then decreased by 30.8 ± 1.48 mg% at 180 min fermentation level. Caffeine and catechin compounds such as EGCg and ECg decreased as fermentation levels were high. These results was in agreement with the result that tea catechins changed to thearubigins through theaflavins. These results of chemical analysis also showed that the color difference data, Hunter value b-a, can be used to determine fermentation-stop point during black tea processing. If ICT technology is applied on automation of tea processing, the control of fermentation process can possibly be controlled and standardized by monitoring with automatic color difference meter.

목차

등록된 정보가 없습니다.

참고문헌 (0)

참고문헌 신청

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!

이 논문의 저자 정보

최근 본 자료

전체보기

댓글(0)

0