Effect of Cooked Glutinous Rice Flour and Soused Shrimp on the Changes of Free Amino Acid, Total Vitamin C and Ascorbic Acid Contents during Kimchi Fermentation

찹쌀풀 및 새우젓 첨가가 김치 발효중 총 유리아미노산, 총 Vitamin C 및 환원형 Ascorbic acid의 함량변화에 미치는 영향

  • Lee, Hyung-Ok (Department of Food Technology, Korea University) ;
  • Lee, Hye-June (Department of Food and Nutrition, Shin Gu College) ;
  • Woo, Soon-Ja (Department of Food Technology, Korea University)
  • 이형옥 (고려대학교 식품공학과) ;
  • 이혜준 (신구전문대학 식품영양과) ;
  • 우순자 (고려대학교 식품공학과)
  • Published : 1994.08.01

Abstract

This study was intended to observe the effect of cooked glutinous rice flour and soused shrimp on the fermentation of Kimchi samples were fermented for 11 days at 10$^{\circ}C$ after they were previously fermented for 6 hours at 20$^{\circ}C$. Changes of pH, total acidity, salt content, reducing sugar content, free amino acid content, total vitamin C content, and ascorbic acid content were measured. The results were as follows; 1. Soused shrimp and glutinous rice flour added in Kimchi acted as lactobacilli growth enhancer during fermentation. 2. Initial cincentrations of redng sugars in Kimch samples with no soused shrimp, 5% and 10% sosed shrimp were 7.5~8.3 mg/g, 3.0~4.7 mg/g and 0.5~0.6 mg/g respectively. Kinchi samples with glutinous rice flour showed higher reducing sugar contents than Kimchi samples without it. 3. Free amino acid contents in Kimchi samples gradually decreased during fermentation at 10$^{\circ}C$. According to their soused shrimp concentration, contents of free amino acid of Kimchi samples were significantly different. And Kimchi samples with glutinous rice flour showed lower free amino acid contents than Kimchi samples without it. 4. Total vitamin C contentrations of Kimchi samples were 24.5~28.0 mg% at the initial stage of fermentation and 15.0~19.2 mg% at the final stage of fermentation. During the fermentation of Kimchi, the higher soused shrimp concentration, the less total vitamin C contents were remained. 5. During the fermentation, ascorbic acid contents of Kimchi samples were not affected by soused shrimp and glutinous rice flour.

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