Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Characteristics of Kiwifruit-Added Traditional Kochujang

키위 첨가 전통고추장의 품질 특성

  • Kim, Young-Soo (Faculty of Biotechnology(Food Science and Technology Major), Chonbuk National University) ;
  • Song, Geun-Seoup (Department of Food Engineering, Iksan National College)
  • 김영수 (전북대학교 응용생물공학부(식품학전공)) ;
  • 송근섭 (익산대학 식품공업과)
  • Published : 2002.12.01
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Abstract

In order to improve palatability and quality of traditional kochujang, kiwifruit (Actinidia deliciosa) was added to traditional kochujang fermented for 3 months. Physicochemical and microbial characteristics were investigated during fermentation at $30^{\circ}C$. Moisture contents of all treated kochujangs increased with increasing amount of kiwifruit added during fermentation. pH of kiwifruit-added kochujang was lower than that of the control kochujang, whereas no significant differences in titratible acidity was observed among all treatments. Crude protein and salt contents of kiwifruit-added kochujang were lower than those of the control, whereas no difference in crude fat contents were found. Ethanol and amino-nitrogen contents of 6 and 9% kiwifruit-added kochujang were higher than those of the control. Fructose contents of kiwi-added kochujangs were higher than that of the control. Major organic acids of kochujang were in the order of malic acid > citric acid > succinic acid > acetic acid > lactic acid > oxalic acid. Succinic acid level increased significantly during fermentation and was higher in kiwifruit-added kochujang than in the control. Bacterial cell counts of all treatments were not different, and viable cell count of yeast was slightly higher in kiwifruit-added kochujang only at the initial fermentation period. Sensory evaluation revealed that the addition of 9% kiwifruit was the optimum condition for improving kochujang quality.

전통고추장의 기호성 및 품질을 향상시킬 수 있는 제품을 개발하기 위하여 국내에서는 물론 외국에서 기호성이 우수한 과실인 키위를 전통고추장에 첨가하고 발효 과정 중 성분변화를 분석하였다. 수분함량은 숙성과정중 전반적으로 증가하였으며, 키위 첨가량이 많을수록 높은 수분함량을 나타내었고 pH는 과실첨가시 대조구에 비해 낮은 수치를 보인 반면에 적정산도에서는 큰 차이가 없었다. 조단백질과 조회분 함량은 키위 첨가량이 증가할수록 감소하는 경향을 보였지만, 조지방 함량은 대조구와 키위 첨가구 사이에 차이를 보이지 않았다. 알콜과 아미노태질소 함량은 대조구에 비하여 키위 6%와 9% 첨가구에서 각각 $2.3{\sim}2.4%,\;387{\sim}400\;mg%$로 높은 값을 나타내었다. 키위 첨가 고추장은 대조구에 비하여 모든 처리구에서 fructose 함량이 다소 높았다. 고추장의 유기산은 malic acid > citric acid > succinic acid > acetic acid > latic acid > oxalic acid 순이었으며, 발효 초기에는 citric acid 함량이 가장 높았으나 60일 발효 후에는 malic acid 함량이 높았다. 키위 첨가량이 많을수록 malic acid 함량이 낮았으며, 발효과정에서 가장 높은 증가율을 보인 유기산은 succinic acid로서 키위 첨가량이 많을수록 증가율이 높았다. 세균수는 발효초기 미소한 증가를 보였으나 이후에는 서서히 감소하는 경향을 보였으며, 키위첨가에 의하여 크게 영향을 받지 않았다. 효모수에 있어서는 발효 10일경에 증가하였다가 감소하였으며, 키위 첨가구가 대조구에 비해 발효 초기의 효모수가 약간 높았으나 첨가량에 따른 차이는 나타나지 않았다. 관능적인 특성에서 키위 첨가가 고추장의 색과 향에 있어서는 유의적으로 좋은 영향을 끼치는 것으로 나타났으나, 맛에서는 차이가 없었다. 종합적인 기호도를 평가한 결과 9%첨가구가 가장 적합한 것으로 나타났다.

Keywords

References

  1. Choo, J.J. Anti-obesity effects of kochujang in rats fed on a highfat diet. Korean J. Nutr. 33: 787-793 (2000)
  2. Park, K.Y., Kong, K.R. Jung, K.O. and Rhee, S.H. Inhibitory effects of kochujang extracts on the tumor formation and lung metastasis in mice. J. Food Sci. Nutr. 6: 187-191 (2001)
  3. Park, J.S., Lee, T.S., Kye, H.W., Ahn, S.M. and Noh, B.S., Study on the preparation of kochujang with addition of fruit juices (in Korean). Korean J. Food Sci. Technol. 25: 98-104 (1993)
  4. Lee, K.S. and Kim, D.H. Effect of sake cake on the quality of low salted kochujang. Korean J. Food Sci. Technol. 23: 109-115 (1991)
  5. Joo, J.J. and Shin, H.J. Sensory evaluation and changes in physicochemical properties, and microflora and enzyme activities of pumpkin-added kochujang. Korean J. Food Sci. Technol. 32: 851-859 (2000)
  6. Lee, Y.S., Kang, C.S. and Lee, Y.S. Changes in composition of pumpkin kochujang during fermentation. KGARR 9: 193-198 (1998)
  7. Yoo, M.S., Park, H.J. and Chnag, C.M. The quality improvement of gochujang (Korean red pepper paste) by adding ground garlic. RDA. J. Agri. Sci. 37: 709-714 (1995)
  8. Kim, D.H., Effect of condiments on the microflora, enzyme activities and taste components of traditional kochujang during fermentation. Korean J. Food Sci. Technol. 33: 264-270 (2001)
  9. Kim, D.H. and Lee, J.S. Effect of condiments on the physicochemical characteristics of traditional kochujang durmg fermentation. Korean J. Food Sci. Technol. 33: 353-360 (2001)
  10. Shin, D.H., Kim, D.H., Choi, U., Lim, M.S. and An, E.Y. Changes in microflora and enzymes activities of traditional kochujang prepared with various raw materials. Korean J. Food Sci. Technol. 29: 901-906 (1997)
  11. Shin, D.H. Kim, D.H. Choi, U., Lim, M.S. and An, E.Y, Physicochemical characteristics of traditional kochujang prepared with various raw materials. Korean J. Food Sci. Technol. 29: 907-912 (1997)
  12. Shin, D.H., Kim, D.H., Choi, U., Lim, M.S. and An, E.Y. Taste components of traditional kochujang prepared with various raw materials. Korean J. Food Sci. Technol. 29: 913-918 (1997)
  13. Lee, H.Y., Park, K.H., Min, B.Y, Kim, J.P. and Chung, D.H. Studies on the change of composition of sweet potato kochujang during fermentation. Korean J. Food Sci. Technol. 10: 331-336 (1978)
  14. Kang, S.G., Park, I.B. and Jung, S.T. Characteristics of fermented hot pepper soybean paste (kochujang) Prepared by liquid beni-koji. Korean J. Food Sci. Technol. 29: 82-89(1997)
  15. Yu, T.J. Food Oriental Medicine Handbook, pp. 569. Academibook, Seoul,Korea(1999)
  16. National Miso Technical Federation. Standard Miso Analysis, pp. 1-34. Pyung Chang Dang, Tokyo, Japan (1968)
  17. Ministry of Aghculture and Forestry. Standard Collection of Traditional Food, pp. 90-97 (Standard number T014-1993). Seoul (1999)
  18. SAS Institue, Inc. SAS User's Guide. Statistical Analysis Systems Institute, Cary, NC, USA (1992)
  19. Shin, D.H., Kim, D.H., Choi, U., Lim, E.K. and Lim, M.S. Studies on the physicochemical characteristics of traditional kochujang. Korean J. Food Sci. Technol. 28: 157-161 (1996)
  20. Kwon, D.J., Jung, J.W., Kim, J.H., Park, H.J., Yoo, J.Y., Koo, Y.J. and Chung, K.S. Studies on establishment of optimal aging time of korean traditional kochujang. Aghc. Chem. Biotechnol. 39: 127-133(1996)
  21. Shin, D.H., Kim, D.H., Choi, U., Lim, E.K. and Lim, M.S. Studies on the physicochemical characteristics of traditional kochujang. Korean J. Food Sci. Technol. 28: 157-161 (1996)
  22. Lee, K.S. and Kim, D.H. Trial manufacture of low-salted kochujang (Red pepper soybean paste) by the addition of alcohol. Korean J. Food Sci. Technol. 27: 146-154 (1985)
  23. Shin, D.B., Pack, W.M., Lee, O.S., Koo, M.S. and Chung, K.S. Effect of storage temperature on the physicochemical characteristics in kochujang (red pepper soybean paste). Korean J. Food Sci. Technol. 26: 300-304 (1994)
  24. Shin D.H., Kim, D.H., Choi, U., Lim, D.K. and Lim, M.S. Studies on taste components of traditional kochujang. Korean J. Food Sci. Technol. 28: 152-156 (1996)
  25. Shin, D.H., An, E.Y, Kim, Y.S. and Oh, J.Y. Changes in physicochemical characteristics of kochujang prepared with different koji during fermentation. Korean J. Food Sci. Technol. 33: 256-263 (2001)
  26. Shin, D.H., An, E.Y, Kim, Y.S. and Oh, J.Y. Changes in microflora and enzymes activities of kochujang prepared with different koji during fermentation. Korean J. Food Sci. Technol. 33: 94-99 (2001)