Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)
- Volume 11 Issue 1
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- Pages.25-30
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- 1982
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- 1226-3311(pISSN)
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- 2288-5978(eISSN)
Color Evaluation of Commercial Dehydrated Tea-products by Hunter-Lab Tristimulus Colorimeter
시판차류제품(市販茶類製品)의 Hunter-Lab Tristimulus Colorimeter에 의한 색상(色相) 평가(評價)
- Park, Kil-Dong (Korea Ginseng & Tobacco Research Institute) ;
- Choi, Jin-Ho (Korea Ginseng & Tobacco Research Institute) ;
- Sung, Hyun-Soon (Korea Ginseng & Tobacco Research Institute)
- Published : 1982.03.01
Abstract
To evaluate the quality of commercial dehydrated tea-products, the relationships between particle sizes, densities, moisture absorption & desorption and color appearance were studied by using Hunter-lab tristimulus colorimeter and spectrophotometer. Among the tea-products was held no significant relation between particle sizes and color appearance but red ginseng extract powder (RGEP) was included L, a and b values when was reduced particle size. appearance color of tea-products indicated red-orange color, L, a and b values were ranged 32.7 to 48.0, 4.0 to 10.0 and 5.6 to 18.0, respectively, densities of tea-products ranged 0.232 to 0.898 g/ml and increased L values, Hunter's a/b ratio values was included in 0.61 to 0.90. Color stability in this products was well agreed with decrease of total color difference value (
시판차류기호식품(市販茶類嗜好食品)의 관능적(官能的) 평가(評價)와 이들 제품(製品)의 품질관리적(品質管理的) 측면(側面)에서 중요시되는 색도(色度)의 지표(指標)를 조사코저 Hunter-lab tristimulus colormeter를 이용(利用)하여 제품(製品)의 입도(粒度), 밀도(密度), 및 탈흡습(脫吸濕)이 색도(色度)에 미치는 영향을 조사하였다. 1. 제품(製品) 사이에는 입도(粒度)의 크기와 색도(色度)에서 특별한 유사성(有意性)이 인정되지 않았으며, 홍삼정분(紅蔘精粉)의 경우 입도(粒度)가 작아질수록 L,a,b 치(値)가 증가하고, X,Y,Z 치(値)에서는 X, Y 치(値)는 증가하는 경향이었으나 Z 치(値)는 일정치 않았다. 2. 시판차류기호식품(市販茶類嗜好食品) L치(値) 범위는 32.8
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