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KMID : 0665420140290030286
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Korean Journal of Food Culture
2014 Volume.29 No. 3 p.286 ~ p.297
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Growth of Lactic Acid Bacteria and Quality Characteristics of Baechu Kimchi Prepared with Various Salts and Concentration
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Kim Da-Mee
Kim Kyung-Hee
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Abstract
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This study was conducted to evaluate the growth of lactic acid bacteria and quality characteristics of Baechu kimchi
prepared with four types of salt (Solar salt, Flower salt, Hanju salt, and Roasted salt) at two different concentrations (10,
15%) during storage. The quality characteristics of kimchi were examined by investigating acid production, growth of lactic
acid bacteria, sensory properties, salinity, texture, and color characteristics. Baechu kimchi was fermented for 18 days at
10oC. The pH and total acidity did not change during storage according to type and concentration of salt. Growth of lactic
acid bacteria was not affected by type of salt, whereas it was inhibited at 15% salt concentration after 9 days of fermentation. In the quantitative descriptive analysis of sensory properties, kimchi prepared with 10% salt showed significantly higher scores in term of overall acceptability (p<0.05). Meanwhile, there was no significant difference by type of salt. For texture characteristics, hardness of kimchi prepared with 10% salt was significantly higher than that with 20% salt. For color characteristics, L value (brightness) and b values (yellowness) of kimchi prepared with 10% salt increased during fermentation, whereas a value (redness) did not change by type and concentration of salt. The results of this study show that there were no considerable differences in quality characteristics of Baechu kimchi prepared with various types and concentrations of salt. However, Solar salt resulted in more favorable sensory properties and salinity of kimchi than any other types. Further, kimchi prepared with 10% salt showed significantly higher scores in terms of overall acceptability,
growth of lactic acid bacteria, salinity, texture, and color characteristics.
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KEYWORD
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Baechu kimchi, lactic acid bacteria, quality characteristics, salt type and concentration
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