Effect of Salt Concentration on Soybean Leaf Kimchi Fermentation

콩잎 김치의 숙성에 미치는 소금농도의 효과

  • Published : 2003.12.01

Abstract

Soybean leaf kimchi is one of the tyaditional special kimchies of Kyungnam-buk province in Kores This study was investigated to find optimum salt(NaCl) concentration on soybean leaf kimchi fermentation at the low temperature by inspecting physicochemical and microfloral changes. The young and green soybean leaves were harvested at the 4-6 weeks after sawing, and used as kimchi materials. After soybean leaf kimchi was stayed at room temperature far one day, it was fermentated at 5$^{\circ}C$ for 30 days. During fermentation, pH was slowly lowered, total acid content and salinity was increased. The total cell was increased up to 8th day and showed a little changes thereafter. The number of Lactic acid bacteria was rapidically incerased up to 4th day, was slowly increased thereafter. Sensory evaluation on soybean leaf kimehi of the 3.0%∼4.5 % salt treatment had good values.

콩잎김치의 소금농도별 저온에서의 숙성효과를 시기별로 조사하였다. 그 결과 숙성이 진행됨에 따라 pH가 점차로 낮아지고 산가는 증가하였다. 소금농도 1.5% 처리한 콩잎김치에서 가장 빨리 pH가 저하하였다. 염농도 측정에서 처리한 소금농도별로 염농도가 높았으며, 숙성 8일경에 모든 처리에서 염농도가 급격히 증가하였으며 그 이후에는 안정적 양상을 보였다. 소금농도별 미생물상 변화에서 총균수는 숙성이 진행됨에 따라 증가하였다가 감소한 후 일정한 경향을 유지하였고, 젖산균은 숙성되면서 발효 시작시에 현저한 증가를 보인 후 큰 변화 없이 일정한 양상을 유지하는 경향이었으며 처리한 소금농도가 높을수록 발효후기에 젖산속 균의 생육이 활발하였다 소금농도 3.0% 혹은 4.5% 처리한 콩잎김치에서 관능평가 결과 좋은 점수를 받았으며 냄새에서는 좋은 평가를 받았다. 또한 짠맛에서도 보통에 가까운 점수를 받았다.

Keywords

References

  1. Lee, K.I., Rhee, S.H., Han, J.K. and Park, K.Y. (1995) Kinds and characteristics of traditional special kimchi in Pusan and Kyungnam province. J. korean Soc. Food Nutr., 24, 734-743
  2. Park, S.J., Park, K.Y. and Jun, H.K. (2001) Effects of commercial salts on the growth of Kimchi-related microorganisms. J. Korean Soc. Food Sci. Nutr., 30, 806-813
  3. Moon, S.W., Cho, D.W, Park, W.S. and Jang, M.S. (1995) Effect of salt concentration on Tongchimi fermentation. Korean J. Food Sci. Technol., 27, 11-18
  4. Kim, M.H., Kim, S.D. and Kim, K.S. (2000) Effect of salting conditions on the fermentation and quality of Dandelion(Taraxacum platycarpum D.) Kimchi. Korean J. Food Sci. Technol., 32, 1142-1148
  5. So, M.H. and Kim, Y.B. (1995) Cultural characteristics of psychrotrophic lactic acid bacteria isolated from Kimchi. Korean J. Food Sci. Technol., 27, 506-515
  6. Chun, M.S., Lee, T.S. and Noh, B.S. (1995) The changes in organic acid and fatty acids in kochujang prepared with different mashing methods. Korean J. Food Sci. Technol., 27, 25-29
  7. Miyao, S. and Ogawa, T. (1998) Selective media for enumerating lactic acid bacteria groups from fermented pickles (in Japanese). Nippon Shokuhin Kogyo Gakkaishi, 35, 610-617
  8. Lee, H.J., Joo, Y.J., Park, C.S. and Lee, J.S. (2000) Fermentation patterns of green onion Kimchi and chinese cabbage Kimchi. Korean J. Food Sci. Technol., 31, 488-494
  9. Kim, M.H. and Chang, M.J. (2000) Fermentation property of chinese cabbage Kimchi by fermentation temperature and salt concentration. J. Korean Soc. Agric. Chem. Biotechnol., 43, 7-11