The Daecha-12 and Yabukita varieties of powdered green teas were grown under 85% shade-cultivated condition, and their physicochemical properties were analyzed. Total catechin content was not significantly different but, non-gallated catechin content in Daecha-12 was significantly higher than that in Yabukita. Theanine (32%), caffeine (14%), lutein (15%) and total chlorophyll (28%) levels were significantly higher in Daecha-12 than those in Yabukita. The results of a color analysis showed that the lightness L-value of Yabukita was higher than that of Daecha-12 but, that the greenness negative a-value and b-values of Daecha-12 were higher than those of Yabukita. The Daecha-12 cultivar had lower catechin content but higher content of theanine, caffeine, theobromine, lutein, chlorophyll, and a negative a-value than those of the Yabukita cultivar. Thus, the Daecha-12 cultivar is suitable to prepare a high-quality powdered green tea product.
목차
Abstract 서론 재료 및 방법 실험재료 표준품 및 시약 Catechin, Theanine, Caffeine 및 Theobromine 정량 Lutein 및 Chlorophyll 정량 색도 분석 통계처리 결과 및 고찰 Catechins 조성 및 함량 Theanine 함량 Caffeine 및 Theobromine 함량 Lutein 및 Chlorophyll 함량 색도 요약 문헌
키워드
powdered green teacultivarDaecha-12Yabukita
저자
이란숙 [ Lan-Sook Lee | 한국식품연구원 ]
박종대 [ Jong-Dae Park | 한국식품연구원 ]
차환수 [ Hwan-Soo Cha | 한국식품연구원 ]
김종태 [ Jong-Tae Kim | 다미안 ]
김상희 [ Sang-Hee Kim | 한국식품연구원 ]
Corresponding author