Food Engineering Progress (산업식품공학)

Korean Society for Industrial Food Engineering (한국산업식품공학회)
권호 표지

Quality Characteristics of Makgeolli during Separation Storage Methods

분리저장 방법에 따른 막걸리의 품질특성

  • Lee, Jin-Won (Department of Food & Biotechnology and Food and Bio-industrial Research Center, Hankyong National University) ;
  • Park, Jang-Woo (Department of Food & Biotechnology and Food and Bio-industrial Research Center, Hankyong National University)
  • 이진원 (한경대학교 식품생물공학과 및 식품생물산업연구소) ;
  • 박장우 (한경대학교 식품생물공학과 및 식품생물산업연구소)
  • Received : 2010.11.08
  • Accepted : 2010.11.29
  • Published : 2010.11.30
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Abstract

Due to the globalization of Korean foods, there are great interests in traditional Korean foods. Thus, the enhancement and development of makgeolli processing have been constantly accomplished. In case of makgeolli, the storage stability is very important because the fermentation of makgeolli during distribution is still progressed. Therefore, the objective of this study was to investigate storage stability of makgeolli by separation storage methods. During the 30-day storage at $10^{\circ}C$, pH value, titratable acidity, color value, sugar content, reducing sugar content, and alcohol content were measured. Microbial cell counts were also evaluated. Reducing sugar content was decreased after 10 days for all the samples. In the case of titratable acidity and color, these values were constantly increased with storage time. Especially, the yellowness value of the precipitate of makgeolli was increased by two times than that of the beginning. There was a decreasing tendency for lactic acid bacteria with storage time. In case of yeast, there was a decreasing tendency after 15 days, but the significance was not detected. The quality changes in the samples from centrifugal separation were relatively less than the control. Therefore, the separation storage method could affect the enhancement of makgeolli quality during distribution.

전통식품에 대한 관심이 증가되고 있는 현재 최근 막걸리에 대한 개발이 지속적으로 이루어지고 있다. 특히, 막걸리의 경우 유통 중 발효현상에 따른 저장 안정성이 중요하게 대두되고 있는 실정이다. 따라서 본 연구에서는 막걸리 저장을 위한 안정성에 대한 실험을 수행하였다. 저장 시료로는 대조구 및 원심분리를 하여 얻은 상층액(SS), 침전물(SD)로 하였다. 저장 실험은 $10^{\circ}C$에서 30일 동안 시행하였으며, 저장기간에 따라 취한 시료에 대해 이화학 분석 및 미생물 실험을 하였다. 그 결과 모든 시료군에 대해서 환원당은 10일째부터 감소하는 경향을 나타내었으며, 산도 및 색도 경우 저장기간에 따라 지속적으로 증가하는 경향을 나타내었다. 특히, 침전물 부분은 yellowness value가 저장 초기보다 2배 정도 증가하였다. 미생물의 경우 유산균은 저장기간이 증가할수록 감소하는 경향을 나타내었으며, 효모는 저장 15일 이후 감소하는 경향을 나타내었으나 그 유의차는 크지 않았다. 이러한 변화는 원심분리한 후 저장한 시료군에 대하여 비교적 적게 나타났다. 따라서 분리저장 방법이 저장 유통 중 막걸리의 품질변화 개선 효과에 대해 영향을 미치는 것으로 나타났으며, 향후 막걸리 제품에 대해 분리형 포장 기법이 막걸리 유통 안정성에 영향을 미칠 것으로 판단된다.

Keywords

References

  1. Choi JY, Lee TS, Noh BS. 1999. Characteristics of volatile flavor compounds in improved kochunjang prepared with glutinous rice koji during fermention. Korean. J. Food Sci. Technol. 31: 1221-1226.
  2. Korea Food & Drug Administration. 2000. Official Book for Food. Moonyoung Publishing Co., Seoul, Korea. p. 436.
  3. Chung DH. 2004. The history of Alcohol Tradition in Korea. Shinkwang Publishing Co., Seoul, Korea. pp. 271-298.
  4. Ministry of Commerce, Industry and Energy. 2006. Study on developing How to Improve Quality and Shelf-life of Takju Manufacturing factory, Daegu, Korea. pp. 1, 17.
  5. Kim HY, Lee IS, Kang JY, Kim GY. 2002. Quality characteristics of cookies with various levels of functional rice flour. Korean J. Food Sci. Technol. 34: 642-646.
  6. Lee JH, Lee HD, Kim JY, Kim KM. 1989. Sensory quality attributes of takju and their changes during pasteurization. Korean J. Diet. Cult. 4: 405-410.
  7. Kim KO, Choi HJ. 1995. Optimization of the preparation of ricebased infant foods using freeze drying process. Korean J. Food Sci. Technol. 27: 680-689.
  8. Han EH, Lee TS, Noh BS, Lee DS. 1997. Quality characteristics in mash of takju prepared by using different nuruk during fermentation. Korean J. Food Sci. Technol. 29: 555-562.
  9. Jeong JW, Park KJ, Kim MH, Kim DS. 2006. Quality characteristics of takju fermentation by addition of chestnut peel-powder. Korean J. Food Preserv. 13: 329-336.
  10. Joung EJ, Paek NS, Kim YM. 2004. Studies on Korean takju using the by-product of rice milling. Korean J. Food Nutr. 17: 199-205.
  11. Lee SM, Lee TS. 2000. Effect of roasted rice and defatted soybean on the quality characteristics of takju during fermentation. J. Natural Sci. 12: 71-79.
  12. Park CS, Lee TS. 2002. Quality characteristics of takju prepared by wheat flour nuruks. Korean J. Food Sci. Technol. 34: 296-302.
  13. Park JH, Bae SM, Yook C, Kim JS.2004. Fermentation characteristics of takju prepared with old rice. Korean J. Food Sci. Technol. 36: 609-615.
  14. Shin KR, Kim BC, Yang JY, Kim YD. 1999. Characterization of Yakju prepared with yeasts from fruits. 1. Volatile components in Yakju during fermentation. J. Korean Soc. Food Sci. Nutr. 28: 794-800.
  15. Kang MY, Park YS, Mok CK, Chang HG. 1998. Improvement of shelf-life of Yakju by membrane filtration. Korean J. Food Sci. Technol. 30: 1134-1139.
  16. Miller GL. 1959. Use of dinitrosalicylic acid reagent for determination of reducing sugar. Anal. Chem. 31: 426-428. https://doi.org/10.1021/ac60147a030
  17. National Tax Service Technical Service Institute. 2005. Manufacturing Guideline of Takju and Yakju. National Tax Service Technical Service Institute, Seoul, Korea. pp. 31, 53-54, 195-196.
  18. KFDA. 2003. Code Food, Korea Food and Drug Association. Seoul, Korea.
  19. SAS Institute. 1988. SAS/STAT User Guide, release 6.30 ed. Washington, D.C, USA.
  20. Chung DH. 1974. Fermentation and microbial technology. Sunjin Munhwasa, Seoul, pp. 228-275.
  21. Kim JY, Sung KW, Bae HW, Yi YH. 2007. pH, acidity, color, reducing sugar, total sugar, alcohol and organoleptic characteristics of puffed rice power added takju during fermentation. Korean J. Food Sci. Technol. 39: 266-271.
  22. Lee JS, Lee TS, Noh BS, Park SO. 1996. Quality characteristics of mash of takju prepared by different raw materials. Korean J. Food Sci. Technol. 28: 330-336.
  23. Jung HK, Park ChD, Park HH, Lee GD, Lee IS, Hong JH. 2006. Manufacturing and characteristics of Korean traditional liquor, hahyangju prepared by Saccharomyces cerevisiae HA3 isolated from traditional nuruk. Korean J. Food Sci. Technol. 38: 659-667.
  24. Lee WY, Rhee CH, Woo CJ. 2004. Changes of quality characteristics in brewing of chungju (sambaekju) supplemented with dried persimmon and cordyceps sinensis. Korean J. Food Preserv. 11: 240-245.