Color and Quality Properties of Doenjang Added with Citric Acid and Phytic Acid

Citric acid와 phytic acid가 첨가된 된장의 색도와 품질특성

  • Published : 2003.06.01


Effects of 0.25 and 0.5% citric and phytic acids on color and quality properties of doenjang during fermentation at $30^{\circ}C$ for 80 days were evaluated. As concentration of organic acid and fermentation time of acid-added doenjang increased, acidity, lightness, and antibrowning rate increased, whereas pH, amino nitrogen, and enzyme activity decreased compared to nonacid-added control. Microbial populations of total bacteria, yeast, and lactic acid bacteria were not affected by decrease in pH. Although degree of brown color (p<0.05) could be differentiated, flavor, palatability, acid taste, and overall preference were not significantly different. Browning of doenjang added with 0.25% of either organic acid was inhibited, while quality properties and sensory characteristics were similar to those of the control.


doenjang;browning;citric acid;phytic acid


  1. Yamabe, S. Changes in constituents of misos during storage. J. Brew. Soc. 86: 108-114 (1991)
  2. Obretenov, C., Demyttenaere, J., Tehrani, K.A., Adams, A., Kersiene, M. and Kimpe, N.D. Flavor release in the presence of melanoidins prepared from L-(+)-ascorbic acid and amino acids. J. Agric. Food Chem. 50: 4244-4250 (2002)
  3. Harland, B.F. and Morris, E.R. Phytate: A good or a bad food component? Nutr. Res. 15: 733-754 (1995)
  4. Lee, S.K., Kim, N.D., Kim, H.J. and Park, J.S. Development of traditional doenjang improved in color. Korean J. Food Sci. Technol. 34: 400-406 (2002)
  5. Hayase, H. Chemistry of melanoidins. Nippon Nogeikagaku Kaishi 61: 970-973 (1987)
  6. Korea Food Research Institute. Operation Guideline for Faculty of Korean Fermented Sauce Products, p. 18. KFRI, Korea (2000)
  7. Kim, M.J. and Rhee, H.S. Studies on the changes of taste compounds during soy paste fermentation. Korean J. Soc. Food Sci. 6: 1-8 (1990)
  8. Kim, M.S., Oh, J.A., Kim, I.W., Shin, D.H. and Han, M.S. Fermentation properties of irradiated kochujang. Korean J. Food Sci. Technol. 30: 934-940 (1998)
  9. Kim, Y.S., Kwon, D.J., Koo, M.S., Oh, H.I. and Kang, T.S. Changes in microflora and enzyme activities of traditional kochujang during fermentation. Korean J. Food Sci. Technol. 25: 502-509 (1993)
  10. Hayashi, T. and Namiki, M. Role of sugar fragmentation in an early stage browning of amino-carbonyl reaction of sugar with amino acid. Agric. Biol. Chem. 50: 1965-1970 (1986)
  11. Park, J.S., Lee, M.Y., Kim, J.S. and Lee, T.S. Compositions of nitogen compound and amino acid in soybean paste (doenjang) prepared with different microbial sources. Korean J. Food Sci. Technol. 26: 609-615 (1994)
  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. Agricultural Research and Development Promotion Center. A Comprehensive Studies on the Development of Korean Traditional Foods with High Quality, GA0211-0102, pp. 103-105. ARPC, Korea (2001)
  14. Lakshmi, R.M. and Sumathi, S. Binding of iron, calcium and zinc by fibre of sorghum and ragi. Food Chem. 60: 213-217 (1997)
  15. Motohuji, S. Application of heat pipe in miso brewing. Japan J. Brew. Soc. 79: 169-173 (1984)
  16. Matsumoto, L., Akimoto, T. and Imai, S. Quality changes of safety rice miso fermented at high-temperature (40-50$^\circ$C) in the middle fermentation. Miso Sci. Technol, 39: 254-262 (1991)
  17. Hara, A. Preparative freshness of soybean paste. Food Sci. 40: 36-45 (1998)
  18. Korean Food Research Institute. Technical Development for Inhibiting Browning of Doenjang, pp. 15-17. KFRI, Korea (1997)
  19. Kim, N.D. Study on the browning and its inhibition in soybean paste (doenjang). Ph.D. dissertation, Kon-Kuk Univ., Seoul, Korea (1996)
  20. Korea Foods Industry Association. Food Code, pp. 549-551. Korea Foods Industry Association, Korea (2001)
  21. Shin, D.B., Park, W.M., Yi, 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)
  22. Park, S.K., Seo, K.I., Shon, M.Y, Moon, J.S. and Lee, Y.H. Quality characteristics of home-made doenjang, a traditional Korean soybean paste. Korean J. Soc. Food Sci. 16: 121-127 (2000)
  23. Hondo, S. Saccharides of miso during manufacturing (Part 2). J. Brew. Soc. 594-599 (1989)
  24. AOAC. Official Methods of Analysis. 17th ed. Association of Official Analytical Chemists, Gaithersburg, Maryland, USA (2000)
  25. Gomyo, T and Miura, M. Melanoidin in foods: chemical and physiological aspects. J. Japan Soc. Nutr. Food Sci. 36: 331-340 (1983)
  26. Kim, D.H., Ahn, H.J., Yook, H.S., Kim, M.J., Sohn, C.B. and Byun, M.W. Quality properties of gamma irradiated samjang seasoned soybean paste during storage. Korean J. Food Sci. Technol, 32: 396-401 (2000)
  27. Kwon, D.J., Kim, Y.J., Kim, H.J., Hong, S.S. and Kim, H.K Changes of color in doenjang by different browning factors. Korean J. Food Sci. Technol. 30: 1000-1005 (1998)