Effect of Citrus Concentrate on the Physicochemical Properties of Kochujang

감귤 농축액 첨가가 고추장의 품질특성에 미치는 영향

  • Chae, In-Sook (Department of Food Science and Nutrition, Cheju National University) ;
  • Kim, Hyo-Sun (Department of Food Science and Nutrition, Cheju National University) ;
  • Ko, Yang-Sook (Department of Food Science and Nutrition, Cheju National University) ;
  • Kang, Min-Hwa (Department of Food Science and Nutrition, Cheju National University) ;
  • Hong, Sang-Pil (Korea Food Research Institute) ;
  • Shin, Dong-Bum (Department of Food Science and Nutrition, Cheju National University)
  • 채인숙 (제주대학교 식품영양학과) ;
  • 김효선 (제주대학교 식품영양학과) ;
  • 고양숙 (제주대학교 식품영양학과) ;
  • 강민화 (제주대학교 식품영양학과) ;
  • 홍상필 (한국식품연구원) ;
  • 신동범 (제주대학교 식품영양학과)
  • Published : 2008.12.31

Abstract

In an effort to improve the quality and palatability of kochujang, the physicochemical and microbial characteristics of kochujang were assessed when different quantities of citrus concentrate were added during fermentation. The moisture content of kochujang increased throughout the entire fermentation process. The pH of kochujang was reduced gradually, but the titratable acidity was increased to 10 weeks of fermentation. The amino-nitrogen and reducing sugar contents of kochujang to which citrus concentrate was added were higher than those of the control, and these values increased with increasing fermentation time. As the ratio of added citrus concentrate increased, the color of the kochujang brightened. The total cell and yeast counts were unaffected by the addition of citrus concentrate. Our sensory evaluation test showed that the addition of 6% citrus concentrate was the optimal condition for improving the quality of kochujang. In conclusion, the addition of citrus concentrate was desirable for the improvement of the quality and palatability of kochujang.

전통 고추장의 기호성과 품질을 개선시킬 수 있는 제품을 개발하기 위하여 감귤 농축액을 3, 6, 9% 첨가한 전통 고추장을 만들고 숙성과정 중의 성분변화를 분석하였다. 수분함량은 숙성과 더불어 전반적으로 증가하였으나 감귤 농축액 첨가량이 많을수록 수분함량의 증가가 둔화되었다. pH는 숙성 10주까지는 감소하다 그 이후 약간 증가한 반면 적정산도는 10주까지 증가하다가 그 이후 감소하였다. 아미노태 질소 함량은 감귤 농축액 첨가량이 많을수록 증가하였으며 숙성과 더불어 증가하였다. 환원당 함량은 숙성 6주까지는 증가하다가 그 이후 감소하는 경향을 보였다. 알코올 함량은 감귤 농축액 첨가 고추장에서가 더 많이 생성됨을 알 수 있었다. 고추장의 색은 감귤 농축액의 첨가량이 많을수록 약간 밝아졌으나 숙성과 더불어 L, a, b 값은 감소하였다. 고추장의 총 균수는 숙성 12주 동안 큰 변화가 없이 $1.0{\times}10^7-6.8{\times}10^7CFU/g$정도를 유지하는 양상을 보였다. 효모는 숙성 6주까지 증가하다가 그 이후에는 약간의 감소하였다. 결론적으로 감귤 농축액의 첨가로 고추장의 맛에 영향을 미치는 아미노태 질소와 환원당의 함량이 대조구에 비하여 증가하였으며, 고추장의 색도 밝아져 고추장의 품질에 바람직한 영향을 미치는 것으로 조사되었으며 6%의 감귤 농축액 첨가가 가장 좋은 것으로 나타났다.

Keywords

References

  1. 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. Food Hyg. Safety 21: 223-230 (2006)
  2. Cho HO, Kim JG, Lee HJ, Kang JH, Lee TS. Brewing method and composition of traditional kochujang (red pepper paste) in Junrabook-do area. J. Korean Agr. Chem. Soc. 24: 21-28 (1981)
  3. Shin DH, Kim DH, Choi U, Lim MS, An EY. Physicochemical characteristics of traditional kochujang prepared with various raw materials (in Korean). Korean J. Food Sci. Technol. 29: 907-912 (1997)
  4. Shin DH, Kim DH, Choi U, Lim EK, Lim MS. Studies on the physicochemical characteristics of traditional kochujang. Korean J. Food Sci. Technol. 28: 157-161 (1996)
  5. Yu RN. Effect of dietary hot red peper powder on humoral immune response in rat. J. Korean Soc. Food Nutr. 24: 837-842 (1995)
  6. Yu RN, Kim JM, Han JS, Kim BS, Lee SH, Kim MH, Cho SH. Effects of hot taste preference on food intake pattern serum lipid and antioxidative vitamin levels in Korean college students. J. Korean Soc. Food Nutr. 25: 338-345 (1996)
  7. Kim MS, Kim IW, Oh JA, Shin DH. Effect of different koji and irradiation on the quality of traditional kochujang. Korean J. Food Sci. Technol. 31: 196-205 (1999)
  8. Lee GD, Jeong YJ. Optimization on organeoleptic properties of kochujang with addition of persimmon fruits. J. Korean Soc. Food Sci. Nutr. 27: 1132-1136 (1998)
  9. Park JS, Lee TS, Kye HW, Ahn SM, Noh BS. Study on the preparation of kochujang with addition of fruit juices (in Korean). Korean J. Food Sci. Techol. 25: 98-104 (1993)
  10. Kim YS, Song GS. Characteristics of kiwifruit-added traditional kochujang. J. Food Sci. Technol. 34: 1091-1097 (2002)
  11. Park WP, Cho SH, Lee SC, Kim SY. Changes of characteristics in kochujang fermented with maesil (Prunus mune) powder or concentrate. Korean J. Food Preserv. 14: 378-384 (2007)
  12. Carrol KK, Kurowska, FM, Cuthrre N. Use of citrus limonoids and flavonoids as well as tocotrienols for the treatment of cancer. International Patent WO 9916167 (1999)
  13. Mayer A, Yi O, Pearson D, Waterhouse AL, Frankel E. Inhibition of human low-density lipoproteins oxidation in relation to phenolic antooxidants in grapes. J. Agr. Food Chem. 43: 1838-1843 (1986)
  14. Monforte MT, Trovato A, Kirjavainen S, Forestieri AM, Galat. EM, Lo Curto RB. Biological effects of hesperidin, a Citrus flavonoid (note II) Hypolipidemic activity on experimental hypercholesterolemia in rat. Farmaco 50: 595-599 (1995)
  15. Rousff RL, Martin SF, Youtsey CO. Qualitative survey of narirutin, naringin, hesperidin and neohesperidin in citrus. J. Agr. Food Chem. 35: 1027-1030 (1987) https://doi.org/10.1021/jf00078a040
  16. Cha JY, Kim SY, Jeong SJ, Cho YS. Effects of hesperidin and naringine on lipid concentration in orotic acid treated mice. Korean J. Life Sci. 9: 389-394 (1999)
  17. Ministry of Agriculture and Forestry. Standard Collection of Traditional Food. pp. 90-97 (Standard number T014-1993). Seoul, Korea (1999)
  18. Miller GL. Use of dinitrosalicylic acid reagent for determination of reducing sugar. Anal. Chem. 31: 426-428 (1959) https://doi.org/10.1021/ac60147a030
  19. National Miso Technocal Federation. Standard Miso analysis, pp.1-34. Pyung Chang Dang, Tokyo, Japan (1968)
  20. Kim DH, Lee JS. Effect of condiments on the physicochemical characteristics of traditional kochujang during fermentation. Korean J. Food Sci. Technol. 33: 353-360 (2001)
  21. Choo JJ, Shin HJ. Sensory evaluation and changes in physicochemical properties and microflora and enzyme activity of pumpkin-added kochujang. Korean J. Food Sci. Technol. 32: 851-859 (2000)
  22. Kim DH, Ahn BY, Park BH. Effect of Lycium chinense fruit on the physicochemical properties of kochujang. J. Food Sci. Technol. 35: 461-469 (2003)
  23. Kwon YM, Kim DH. Effects of sea tangle and chitosan on the physicochemical properties of traditional kochujang. Korean J. Food Sci. Nutr. 31: 977-985 (2002) https://doi.org/10.3746/jkfn.2002.31.6.977
  24. Kim HS, Lee KY, Lee HG, Han O, Chang UJ. Studies on the extention of shelf-life of kochujang during storage. J. Korean Soc. Food. Nutr. 26: 595-600 (1997)
  25. Shin DB, Park WM, Yi OS, Koo MS, Chung KS. Effect of storage temperature on the physicochemical characteristics in kochujang (red peper soybean paste). Korean J. Food Sci. Technol. 26: 300-304 (1994)
  26. Lee KY, Kim HS, Lee HG, Han O, Chang UJ. Studies on the prediction of the self-life kochujang through the physicochemical and sensory analyses during storage. J. Korean Soc. Food. Nutr. 26: 588-594 (1997)
  27. Bang HY, Park MH, Kim GH. Quality characteristics of kochujang prepared with Paecilomyces japonica from silkworm. Korean J. Food Sci. Technol. 36: 44-49 (2004)
  28. Park WP. Quality changes of kochujang made of rice flour and rice starch syrup during againg. Korean J. Food Sci. Technol. 26: 23-25 (2004)
  29. Kwon DJ, Jung JW, Kim JH, Park JH. Studies on estabilishment of optimal aging time of Korean traditional kochujang J. Korean Agr. Chem. Soc. 39: 127-133 (1996)
  30. Ahn CW, Sung NK. Changes of major components and microorganism during the fermentation of Korean ordinary kochujang. J. Korean Soc. Food Nutr. 16: 35-39 (1987)
  31. Kang YJ. Citrus juice processing, quality control and distribution. Onnuri, Jeju, Korea. p.40 (2005)
  32. Kim KH, Bae JS, Lee TS. Studies on the quality of kochujang prepared with grain and flour of glutious rice. J. Korean Soc. Agr. Chem. Biotechnol. 29: 227-236 (1986)
  33. Jeong YJ, Seo JH, Lee GD, Lee MH, Yoon SR. Changes in quality characteristics of traditional kochujang prepared with apple and persimmon during fermentation. J. Korean Soc. Food Nutr. 29: 575-581 (2000)
  34. Kim JO, Lee KH. Effect of temperature on color and color-preference of industry produced kochujang during storage. J. Korean Soc. Food Nutr. 23: 641-646 (1994)
  35. Kim YS, Kwon DJ, Koo MS, Oh HI, Kang TS. Changes in microflora and enzyme activity of traditional kochujang during fermentation. Korean J. Food Sci. Technol. 25: 502-509 (1993)
  36. Kim MS, Kim IW, Oh JA, Shin DH. Quality changes of traditional kochujang prepared with different meju and red pepper during fermentation. Korean J. Food Sci. Technol. 30: 924-501 (1998)