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http://dx.doi.org/10.3746/jkfn.2004.33.2.386

Physicochemical Characteristics of Sangju Traditional Dried Persimmons during Drying Process  

강우원 (상주대학교 식품영양학과)
김종국 (상주대학교 식품영양학과)
오상룡 (상주대학교 식품공학과)
김준한 (상주대학교 식품영양학과)
한진희 (상주대학교 식품영양학과)
양진무 (상주대학교 식품공학과)
최종욱 (경북대학교 식품공학과)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.33, no.2, 2004 , pp. 386-391 More about this Journal
Abstract
This study was performed to investigate change of quality characteristics on traditional dried Persimmons from Sangju varity regions (sun-dried, Namjang and Bokryong). Moisture contents on drying were decreased and constant at from 7th to 14th days drying periods and its periods were recognized to constructing second peel of dried persimmons. Constructed second peel were affected on quality characteristics of traditional dried Persimmons. Also, in case of semi-dried persimmons were processed at 45∼55% level of moisture content. Final products of semi -dried persimmons were estimated in 25th from initial drying periods. Changes of water activity were increased reducing speed at time of water content decreased, second feel constructing during drying persimmons were introduced to decreasing of water activity. Weights of dried Persimmons were quickly decreased in 21th drying periods and slowly decreased after that time. Weight changing and water evaporation of dried persimmons at the Namjang and Bokryong were slowy decreased and controled after 7∼14th in periods of constructing second feel of dried persimmons. Change of brix in dried persimmons have had in 18∼27% value at initial drying periods and quickly increased after 7∼14th in drying periods and have in high value of 40∼50% at 21th drying periods. At the texture of dried persimmons, hardness were decresed after 7∼14th in periods and effected on decreasing of water content, increasing of drying times. Sensory score of dried persimmons were highest score of color, sweetness and texture at dried persimmons of Namjang. Score of astringency, sourness and mold smell were highest at dried persimmons of Bokryong. Value of highest overall acceptance score was at dried Persimmons of Namjang.
Keywords
dried persimmons; quality characteristics; texture; sensory score;
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