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KMID : 0665220160290050706
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Korean Journal of Food and Nutrition
2016 Volume.29 No. 5 p.706 ~ p.715
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Changes in Nutritional Composition and Physicochemical Properties of Mustard Leaf (Brassica juncea) Kimchi during Fermentation
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Jang Hye-Lim
Park Seo-Yeon
Lee Jong-Hun
Hwang Myung-Jin
Choi Young-Min
Kim Haeng-Ran
Hwang Jin-Bong
Seo Dong-Won
Kim Sang-Hee
Nam Jin-Sik
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Abstract
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Nutritional composition and physicochemical properties changes in mustard leaf kimchi were investigated during fermentation of up to 3 months. The pH decreased, and the titratable acidity gradually increased according to increase of fermentation periods. Fructose and glucose were the major free sugars in mustard leaf kimchi, and their amounts were significantly decreased with fermentation periods (p<0.05). Lactic acid content showed a significant increase with maximum increase at 3 months. All types of kimchi contained 20 amino acids, but the content of most amino acid fluctuated during fermentation. Except for K and Zn, the content of other ingredients including Ca, Fe, Mg, Na, Se were the highest in kimchi fermented for 2 months. The unsaturated fatty acid of mustard leaf kimchi was higher than that of saturated fatty acid, and total fatty acid of kimchi significantly decreased after 2 months (p<0.05). Most vitamin contents showed a tendency to decrease with fermentation, in particular, vitamin B complex except for B2 significantly decreased after 3 months (p<0.05). The results provide fundamental data for determining the appropriate fermentation period to improve the quality of kimchi.
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KEYWORD
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imchi , Brassica juncea , fermentation , nutritional composition , physicochemical properties
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