Evaluation of Quality Characteristics for Gochujang Produced by Small- and Medium-scale Manufacturers

전국 중소업체 생산 고추장의 품질 특성 평가

  • Received : 2014.02.03
  • Accepted : 2014.03.14
  • Published : 2014.06.30


To improve the standardized quality of gochujang produced by major companies, the quality characteristics of 29 gochujang samples produced by regional small- and medium-scale manufacturers were determined. The average moisture content, crude protein content, pH, acidity, and salinity of gochujang from regional manufacturers were found to be 34.32-45.53%, 5.07-5.68%, 4.61-4.92, 3.30-3.72%, and 9.93-16.14%, respectively. The contents of reducing sugar, amino type N, and capsaicinoids were found to be 16.81-29.81%, 191.72-660.55 mg%, and 32.49-79.58 mg/kg, respectively, and the ${\alpha}$- and ${\beta}$-amylase activity were 2.52-4.15 and 26.36-36.47 U/g, respectively. These values varied significantly across regional manufacturers. In addition, overall, gochujang had a range of 23.93-55.64% moisture content, 4.01-7.30% crude protein content, 105.47-1092.00 mg% amino type N content, and 8.74-181.50 mg/kg capsaicinoid content. These results indicate that the quality characteristics of gochujang showed a wide distribution but met the Korean Industrial Standards. Therefore, these data can be used for quality control of gochujang.


gochujang;region;quality characteristics;small- and medium-scale manufacturer;distribution


  1. Ministry of Agriculture and Forestry. Standard collection of traditional food (standard number T014-1993). Ministry of Agriculture and Forestry, Seoul, Korea. pp. 90-97 (1999)
  2. Kim JW, Kim YS, Jeong PH, Kim HE, Shin DH. Physicochemical characteristics of traditional fermented soybean products manufactured in folk villages of Sunchang region. J. Fd. Hyg. Safety 21: 223-230 (2006)
  3. Kim YS, Kwon DJ, Oh HI, Kang TS. Comparison of physicochemical characteristics of traditional and commercial kochujang during fermentation. Korean J. Food Sci. Technol. 26: 12-17 (1994)
  4. Kim YS, Cha J, Jung SW, Park EJ, Kim JO. Changes of physicochemical characteristics and development of new quality indices for industry-produced koji kochujang. Korean J. Food Sci. Technol. 26: 453-458 (1994)
  5. Kim YS, Oh HI. Volatile flavor components of traditional and commercial kochujang. Korean J. Food Sci. Technol. 25: 494-501 (1993)
  6. AOAC. Official method of analysis 18th ed. Method 970.59. Association of official analytical chemists, Washington, DC, USA (2005)
  7. Kim MR. Development of taste visualization tables of cheonggukjang and gochujang. Gangwondo Agricultural Research and Extension Services. Chuncheon, Korea. pp. 12-24 (2011)
  8. Han SM, Kim DH. Effect of combined use of anti-microbial materials on storage of low salted kochujang. J. Korean Soc. Appl. Biol. Chem. 51: 281-287 (2008)
  9. Shin DH. Manufacturing process and quality characteristics of regional gochujang. Bull. Food Technol. 8: 54-78 (1995)
  10. Food and Microbiology Team, Department of Test and Inspection. Quality Test of Popular Foods, Gochujang. Korea Consumer Agency, Seoul, Korea. pp. 14-18 (2012)
  11. Lee IS, Lee HJ, Cho EY, Kwon SB, Lee JS, Jeong HS, Hwang Y, Cho MC, Kim HR, Yoo SM, Kim HY. Spicy hot flavor grading in hot pepper powder for gochujang in various cultivars using sensory characteristics. Korean J. Community Living Sci. 22: 351-364 (2011)
  12. Min KH. Analysis of academic research trends pertaining to globalization of Korean food. Korean J. Food Cookery Sci. 25: 606-618 (2009)
  13. Na JK. A study on globalization of Korean restaurants. J. Foodserv. Manag. Soc. Korea 10: 155-179 (2007)
  14. Shin DH. Globalization trends and prospect of Korean traditional fermented foods. Food Sci. Ind. 43: 69-82 (2010)
  15. Park CN, Kim JK. Processed food market report of fermented soy industry. Korean Agro-Fisheries & Food Trade Corp, Seoul, Korea. pp. 80-83 (2013)
  16. Kim, DH, Kwon YM. Effect of storage conditions on the microbiological and physicochemical characteristics of traditional kochujang. Korean J. Food Sci. Technol. 33: 589-595 (2001)
  17. Jeong YJ, Seo JH, Cho HS. Quality characteristics of kochujang prepared with commercial protease. Korean J. Food Nutr. 20: 378-383 (2007)
  18. Hong YJ, Son SH, Kim HY, Hwang IG, Yoo SS. Volatile components of traditional gochujang produced from small farms according to each cultivation region. J. East Asian Soc. Dietary Life 23: 451-460 (2013)
  19. Choi JY, Lee TS. Characteristics of volatile flavor compounds in kochujang prepared with commercial enzyme during fermentation. J. Korean Soc. Appl. Biol. Chem. 46: 207-213 (2003)
  20. Kwan DJ, Jung JW, Kim JH, Park JY, Yoo JY, Koo YJ, Chung KS. Studies on establishment of optimal aging time of Korean traditional kochujang. J. Korean Soc. Appl. Biol. Chem. 39: 127-133 (1996)


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