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KMID : 0380919960250030470
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Journal of the Korean Society of Food Nutrition
1996 Volume.25 No. 3 p.470 ~ p.477
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The Changes of Pectic Substances and Enzyme Activity, Texture, Microstructure of Anchovy Added Kimchi
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Ryu Bog-Mi
Jeon Young-Soo
Moon Gap-Soon
Song Young-Sun
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Abstract
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This study was intended to observe the changes of pectic substances and enzyme activities, texture, microstructure of anchovy added kimchi during fermentation for 4 weeks at 4℃. Content of alcohol insoluble solid(AIS) and HCl soluble pectin(HClSP) were decreased, whereas content of hot water soluble pectin(HWSP) was increased during fermentation. Content of HClSP was higher and HWSP was lower in anchovy added kimchi than control. Activity of pectinesterase(PE) was decreased, whereas activity of polygalacturonase(PG) was increased during fermentation. In anchovy added kimchi, PG activity was lower than control. Changes in microstructure of Chinese cabbage and kimchi during fermentation was observed; in the raw cabbage, parenchyma cells, intercellular space and middle lamella were clearly shown. But in salted cabbage, middle lamella became separated. In the late stage of fermentation, parenchyma cell walls were wrinkled and collapsed. Puncture forces of kimchi were decreased, whereas cutting forces of kimchi were increased as fermentation proceeded. The firmness was slightly higher in anchovy added kimchi than control at the late stage of fermentation, which may be explained by the low PG activity.
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KEYWORD
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kimchi, pectin, microstructure, texture
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