Quality Characteristics of Kimchi Added with Green Tea Powder

분말녹차 첨가 김치의 품질 특성

  • Ko, Young-Tae (Department of Foods and Nutrition, Duksung Women's University) ;
  • Lee, Su-Hyun (Department of Foods and Nutrition, Duksung Women's University)
  • 고영태 (덕성여자대학교 식품영양학과) ;
  • 이수현 (덕성여자대학교 식품영양학과)
  • Published : 2007.12.31

Abstract

The effects of green tea powder (GTP) on kimchi quality were evaluated by investigating acid production, growth of lactic acid bacteria, sensory properties, and several volatile odor components of GTP-added kimchi. The concentrations of GTE added to kimchi were 0.2, 0.4, 0.6 and 1.2% (w/w) of salted Chinese cabbage. The pH of kimchi with higher amounts of added GTP increased with ripening. The acidity of unripened kimchi or kimchi ripened for one day generally increased with the addition of GTP, while that of kimchi ripened for two or three days generally decreased with the addition of GTP. Addition of GTP had no significant effect on the lactic acid bacterial count of kimchi. Scores of overall acceptability, taste and odor of 0.2 or 0.4% GTP-added kimchi were higher than those of other samples, whereas scores of color decreased with increasing amount of GTP added to kimchi. Texture of kimchi added with higher amounts of GTP and ripened for two or three days resulted in lower score than the reference sample. Diallyl sulfide and methyl trisulfide were newly produced with the ripening of kimchi, and the amounts of some volatile odor components in kimchi were changed during ripening.

References

  1. Shimamura, T. (2005) Antibacterial activities of tea against bacteria causing diarrheal diseases. Food Sci. Industry 38, 36-38
  2. Park, H. J., Kim, S. I., Lee, Y. K. and Han, Y. S. (1994) Effect of green tea on kimchi quality and sensory characteristics. Korean J. Soc. Food Sci. 10, 315-321
  3. Jo, J. S. (2000) Studies on kimchi. Yurim-munhwasa, Seoul, Korea. p. 262
  4. Ko, Y. T. and Lee, J. Y. (2004) Quality characteristics of kimchi prepared with different part of Chinese cabbage and its quality change by freeze-drying. Korean J. Food Sci. Technol. 36, 784-789
  5. Ko, Y. T. (2005) Effects of licorice (Glycyrrhiza uralensis) extract added to kimchi on growth and acid formation by lactic acid bacteria and on quality of kimchi. Korean J. Food Sci. Technol. 37, 795-800
  6. Conney, A. H. (2005) Tea and Cancer. Food Sci. Industry 38, 46-58
  7. Wu, C. D. (2005) Green tea polyphenols in oral disease prevention and oral health promotion. Food Sci. and Industry 38, 21-24
  8. Hong, S. I., Park, N. H. and Kim, K. H. (1994) Changes of quality of kimchi according to packing method. pp. 384-399. In Symposium on Science of Kimchi. November 4, Intercontinental Hotel, Seoul, Korea. The Korean Society of Food Sci and Technol, Seoul, Korea
  9. Nakachi, K., Suga, K.. and Imai K. (1995) Preventive effects of drinking green tea on cardiovascular disease and cancer. pp. 13-20. In International Symposium on Green Tea, September 1, Lotte Hotel, Seoul, Korea
  10. Lee, S. J., Kim, M. J. and Yun, Y. H. (1995) Effects of Korean green tea, oolong tea and black tea beverage on the removal of cadmium and antioxidative detoxification in cadmium administered rats. pp. 21-38. In International Symposium on Green Tea, September 1, Lotte Hotel, Seoul, Korea
  11. Larmond, E. (1977) Laboratory Methods for Sensory Evaluation of Food. Canada Department of Agriculture, Ottawa, Canada. pp. 31-37
  12. Kim, B. C. (2006) Green tea. Kimyoungsa, Paju, Korea. p. 21
  13. Harakudo, Y. and Sugitakonishi, Y. (2005) Antibacterial action on pathogenic bacteria by green tea catechins. Food Sci. Industry 38, 31-35
  14. SYSTAT Software Inc. (2004) SigmaStat Version 3.01A. SYSTAT Software Inc., Richmond, CA, USA