Physiochemical properties of Seok-jang

석장(간장소금)의 이화학적 특성

  • Hwang, Su Jung (Faculty of Herbal Food Cuisine and Nutrition, Daegu Hanny University) ;
  • Kim, Ye-Seul (Department of Food Science and Technology, Chonnam National University) ;
  • Jiang, Gui-Hun (Department of Food Science and Technology, Chonnam National University) ;
  • Eun, Jong-Bang (Department of Food Science and Technology, Chonnam National University)
  • 황수정 (대구한의대학교 한방식품조리영양학부) ;
  • 김예슬 (전남대학교 식품공학과) ;
  • 강귀훈 (전남대학교 식품공학과) ;
  • 은종방 (전남대학교 식품공학과)
  • Received : 2016.01.18
  • Accepted : 2016.05.21
  • Published : 2016.08.30


Seok-jang is one of traditional seasonings prepared by solidification of the mixture of say sauce and salt for long period of aging time. In this study, the physiochemical properties of Seok-jang were investigated for the substitution of solar salt. Seok-jang exhibited highest mineral (P, Na, Fe, Mn, and Al) contents than those of solar salt and soy sauce, while showed lower soluble solids content than that of soy sauce. Seok-jang also exerted the highest pH value 7.70 compared to solar salt and soy sauce. Whereas magnesium and calcium contents of solar salts were 2.90 and 0.26 ppm, which were significantly higher than those of Seok-jang. In color values, $L^*$ value was highest in solar salt and lowest in say sauce, While the highest $a^*$ and $b^*$value were 6.19 and 18.2 observed in Seok-jang followed by a solar salt and soy sauce. On the other hand, less amount of insoluble solid and sand powder content were 0.03 and 0.07% found in Seok-jang, respectively. In conclusion, Seok-jang was suitable for the potentional substitution of natural salt ingredient.


  1. Cho SH, Choi YJ, Oh JY, Kim NG, Rho CW, Choi CY, Cho SH (2007) Quality characteristics of Kanjang (Soy Sauce) fermentation with bamboo sap, xylem sap and Gorosoe. Korean J Food Preserv, 14, 294-300
  2. Jeon MS, Sohn KH, Chae SH, Park HK, Jeon HJ (2002) Color characteristics of Korean traditional soy sauces prepared under different processing conditions. J Korean Soc Food Sci Nutr, 31, 32-38
  3. Wei H, Wei L, Frenkel K, Bowen R, Barnes S (1993) Inhibition of tumor promoter-induced hydrogen peroxide formation in vitro and in vivo by genistein. Nutr Cancer, 20, 1-12
  4. Choi YB, Sohn HS (1998) Isoflavone content in Korean fermented and unfermented soybean foods. Korean J Food Sci Technol, 30, 745-750
  5. Moon GS, Cheigh HS (1987) Antioxidative characteristics of soybean sauce in lipid oxidation process. Korean J Food Sci Technol, 19, 537-542
  6. Kim JS, Kim HO, Moon GS, Lee YS (2008) Comparison of characteristics between soy sauce and black soy sauce according to the ripening period. J East Asian Soc Dietary Life, 18, 981-988
  7. Matsushita H, Kobatashi M, Tsukiyama R, Yamamoto K (2006) In vitro and in vivo immunomodulating activities of Shoyu polysaccharides from soy sauce. Int J Mol Med, 17, 905-909
  8. Kobayashi M, Matsushita H, Yoshida K, Tsukiyama R, Sugumura T, Yamamoto K (2004) In vitro and in vivo anti-allergic activity of soy sauce. Int J Mol Med, 14, 879-884
  9. Grollman A (1961) The role of salt in health and disease. Am J Cardiol, 8, 593-601
  10. Gillette M (1985) Flavor effects of sodium chloride. Food Technol, 39, 47-52
  11. Alino M, Grau R, Baigts D, Barat JM (2009) Influence of sodium replacement on the salting kinetics of pork loin. J Food Eng, 95, 551-557
  12. Sofos JN (1985) Influence of sodium tripolyphosphate on the binding and antimicrobial properties of reduced NaCl-comminuted meat products. J Food Sci, 50, 1379-1383
  13. Kremer S, Mojet J, Shimojo R (2009) Salt reduction in foods using naturally brewed soy sauce. J Food Sci, 74, 255-262
  14. Farleigh CA, Sheohred R, Land DG (1985) Measurement of sodium intake and its relationship to blood pressure and salivary sodium concentration. Nutrition Res, 5, 815-826
  15. He FJ, MacGregor GA (2002) Effect of modest salt reduction on blood pressure: a meta-analysis of randomized trials. Implications for public health. J Hum Hypertens, 16, 761-770
  16. Ajani UA, Dunbar SB, Ford ES, Mokdad AH, Mensah GA (2005) Sodium intake among people with normal and high blood pressure. Am J Prev Med, 29, 63-67
  17. Goo JO, Kim WK, Seo JS, Son SM, Lee YS (2010) Diet Therapy Principle & Practice. Kyomunsa Press, Paju, Korea, p 164-190
  18. Yang WW (2014) The rediscovery of stamina. Moabooks Press, Goyang, Korea, p 23
  19. Kim SY (2009) Making method of salt using soy sauce. Korea Patent No. 100913286
  20. Jin YX, Kim HR, Kim SY (2013) Analysis of components according to different collecting time and production method in sun-dried salt. Korean J Food Preserv, 20, 791-797
  21. Korean Food and Drug Administration (2011) Food standards codex. Korean Foods Industry Association
  22. Kwon OJ, Kim MA, Kim TW, Kim DG, Son DH, Choi UK, Lee SH (2010) Changes in the quality characteristics of soy sauce made with salts obtained from deep ocean water. Korean J Food Preserv, 17, 820-825
  23. Kang SH, Lee S, Ko JM, Hwang IK (2011) Comparisons of the physicochemical characteristics of Korean traditional soy sauce with varying soybean seeding periods and regions of production. Korean J Food Nutr, 24, 761-769
  24. Jeong SJ, Shin MJ, Jeong SY, Yang HJ, Jeong DY (2014) Characteristic analysis and production of short-ripened Korean traditional soy sauce added with rice bran. J Korean Soc Food Sci Nutr, 43, 550-556
  25. Kim JS, Moon GS, Lee YS (2006) Chromaticity and brown pigment patterns of soy sauce and UHYUKJANG, Korean traditional fermented soy sauce. Korean J Food Cook Sci, 23, 642-649
  26. Kang CK, Shin TS, Jung BM (2014) Manufacture of sea salt coated with coffee oil and quality characteristics by storage period. J Korean Soc Food Sci Nutr, 43, 1400-1406
  27. Choi SY, Sung NJ, Kim HJ (2006) Physicochemical analysis and sensory evaluation of fermented soy sauce from Gorosoe (Acer mono max.) and Kojesu (betula costata T.) saps. Korean J Food Nutr, 19, 318-326
  28. Moon DS, Kim HJ, Shin PK, Jung DH (2005) Characteristics of chemical contents of horizontal spray salts from deep ocean water. Korean J Fish Aquat Sci, 38, 65-69
  29. Lee JG, Kwon KI, Choung MG, Kwon OJ, Choi JY, Im MH (2009) Quality analysis on the size and the preparation method of Meju for the preparation of Korean traditional soy sauce (kanjang). J Appl Biol Chem, 52, 208-209
  30. Shin TS, Park CK, Lee SH, Han KH (2005) Effects of age on chemical composition in sun-dried salts. Korean J Food Sci Technol, 37, 312-317
  31. Park JW, Kim SJ, Kim SH, Kim BH, Kang SG, Nam SH, Jung ST (2000) Determination of mineral and heavy metal contents of various salts. Korean J Food Sci Technol, 32, 1442-1445
  32. Jang DK, Woo KL, Lee SC (2003) Quality characteristics of soy sauces containing shiitake mushroom (Lentinus edodes). J Korean Soc Agric Chem Biotechnol, 46, 222-224
  33. Kim JG (2004) Changes of component affecting organoleptic quality during the ripening of Korean traditional soy sauce-amino nitrogen, amino acids, and color. J Environ Health, 30, 22-28
  34. Son KH, Lee HJ, Park HK, Park OJ (1998) Studies on taste compound content and research on condition of consumer attitude to traditional Korean soy sauce with varing Meju type and fermentation jars. Korean J Food Cook Sci, 14, 463-467
  35. Ko YR (2002) Quality characteristics of black bean Kanjang prepared with different cooking conditions of whole black bean. MS Thesis, Sunchon National University, Korea, p 39-40
  36. Ha JO, Park KY (1998) Comparison of mineral contents and external structure of various salts. J Korean Soc Food Sci Nutr, 27, 413-418