Changes in Chemical Compositions of Fruit-Vegetable Mixed Juice Sterilized at Various Conditions During Storage

살균조건에 따른 과채혼합주스의 저장 중 성분변화

  • 김경탁 (한국식품개발연구원 농산물이용연구부) ;
  • 김성수 (한국식품개발연구원 농산물이용연구부, 선문대학교 식량자원학과)
  • Published : 1996.09.01

Abstract

The purpore of this study was to elucidate the nutritional significance of the fruit-vegetable mixed juice during storage and distribution by examining the chemical composition of the mixed Juice for storage. The fruit-vegetable mixed Juices were sueriliged at 95$^{\circ}C$ for 30, 70, 100 seconds and the results of the changes in vitamin C contents, colors, total carotenoid contents, total aerobic counts and sensory evaluation of the mixed Juice were as follows: Vitamin C contents were drastically decreased at 7 day's storage and were not significantly different between the mixed Juices at p< 0.05 level after 7 day's storage. The longer the sterilization time and storage period of the mixed Juice was the higher changes in color was. The color changes in the sterilized samples were higher in order of 100, 70 and 30 seconds. Total carotenoid contents were slightly decreased according to storage period but were not affected by sterilization time. Total aerobic counts were 1.1 $\times$ 101 cfu/ml before sterilization, but it was negative after sterilization at 95t regardless of sterilization time. Sensory qualities such as color, flavor, taste and total acceptability of the mixed juice tended to be decreased by the Increased storage period and sterilization time. Especially, the sterilized sample for 100 seconds showed lots of changes In color.

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