Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Changes in Quality of Spray-dried and Freeze-dried Takju Powder during Storage

분무 및 동결 건조 탁주 분말의 저장 중 품질변화

  • Published : 2006.08.01
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Abstract

Spray-dried (SD) and freeze-dried (FD) takju powders were stored at 5, 15 and $25^{\circ}C$, and various quality characteristics such as moisture, amino nitrogen, color value, total viable cell count, total sugar, reducing sugar organic acid, and flavor compounds were measured for 50 days at 10-day intervals. After 50 days of storage, the moisture content was increased from an initial 6.64% to 7.24-7.38% in the SD powder, and from an initial 4.86 to 5.43-5.61% in the FD powder. pH, total acid content and total viable cell counts were slightly increased. Organic acid content was decreased in the SD powder from an initial 3,949.9 mg% to 805.9-922.3 mg%, and in the FD powder from an initial 5,171.5 mg% to 3,646.0-4,110.2 mg%. Amino nitrogen content was increased in the SD powder from an initial 1.2% to 1.9-2.2% and in the FD powder from an initial 1.9% to 2.2-2.5%. Total sugar and reducing sugar contents were increased in the SD powder from an initial 17.2% and 4.0% to 25.9-27.3% and 5.8-6.9%, and in the FD powder from an initial 19.1% and 5.2% to 29.2-30.2% and 8.3-8.8%, respectively. With increasing storage time, L and b values in the SD powder increased slowly, while L value in the FD powder tended to decrease and b value tended to increase. About 20 major volatile flavor components were identified in the SD and FD powders by GC-MS and all such component levels were decreased with increasing storage time.

탁주를 활용하여 제과, 제방용 품질개선제로 개발하고자 주모 첨가 멥쌀 탁주를 $30^{\circ}C$에서 4일간 발효하여 분무 및 동결 건조한 탁주 분말의 저장중(5, 15 및 $25^{\circ}C$, 50일)품질변화를 검토하였다. 수분함량은 저장 50일에 분무건조 탁주분말이 초기 6.64%에서 7.24-7.38%로, 동결건조 탁주분말은 초기 4.86%에서 5.43-5.61%로 증가하였으며, pH와 총산함량은 초기값과 큰 차이를 나타내지 않았으나 다소 증가하는 경향을 나타내었다. 유기산은 저장 50일에 분무건조 탁주분말이 초기 3,949.9mg%에서 805.9-922.3mg%으로, 동결건조 탁주분말이 초기 5,171.5mg%에서 3,646.0-4,110.2mg%로 감소하였다. 아미노태 질소 함량은 저장 50일에 분무건조 탁주분말이 초기 1.2%에서 1.9-2.2%로, 동결건조 탁주분말은 초기 1.9%에서 2.2-2.5%로 증가하였다. 총당 및 환원당 함량은 저장 50일에 분무건조 박주분말이 초기 17.2%및 4.0%에서 25.9-27.3%및 5.8-6.9%로, 동결건조 탁주분말이 초기 19.1% 및 5.2%에서 29.2-30.2% 및 8.3-8.8%로 증가하였다. 저장기간의 경과에 따라 분무건조 분말은 L 및 b값이 서서히 증가한 반면, 동결건조 분말은 L값은 감소하고 증가하였다. 총균수는 분무건조 탁주분말이 초기 $1.2{\times}10^3$ CFU/g에서 $5.2{\times}10^3-9.4{\times}10^3$ CFU/g로, 동결건조 탁주분말이 초기 $2.1{\times}10^6$ CFU/g에서 $1.8{\times}10^6-2.7{\times}10^6$ CFU/g로 초기균수와 큰 차이를 나타내지 않았다. 분무건조 및 동결건조 탁주분말에서 GC-MS로 동정한 주요 향기성분은 저장초기 분무건조 탁주분말에서 약 10종, 동결건조 탁주분말에서 약 18종이었으며 저장기간의 경과에 따라 감소하였다.

Keywords

References

  1. Jeong HK. A view of Korean alcholic liquor industry in 21 st century. Food Ind. Nutr. 4: 3-8 (1999)
  2. Bae SM. The superiority of Korean traditional wines and their industrial application methods. Food Ind. Nutr. 4: 9-12 (1999)
  3. Ahn BH. Investigation trends in traditional liquor. Bull. Food Tech. 7: 42-47 (1994)
  4. Song JC, Park HJ. Takju brewing using the uncooked germed brown rice at second stage mash. J. Korean Soc. Food Sci. Nutr. 32: 847-854 (2003) https://doi.org/10.3746/jkfn.2003.32.6.847
  5. Yang JY, Lee KH. Shelf-life and microbiological study of Sansung takju. Korean J. Food Sci. Technol. 29: 779-785 (1996)
  6. Seo MY, Lee JK, Ahn BH, Cha SK. The changes of microflora during the fermentation of takju and yakju. Korean J. Food Sci. Technol. 37: 61-66 (2005)
  7. Lee JS, Lee TS, Noh BS, Park SO. Quality characteristics of mash of takju prepared by different raw materials. Korean J. Food Sci. Technol. 28: 330-336 (1996)
  8. Han EH, Lee TS, Noh BS, Lee DS. Quality characteristics in mash of takju prepared by using different nuruk during fermentation. Korean J. Food Sci. Technol. 29: 555-562 (1997)
  9. So MH, Lee YS, Noh WS. Improvement in the quality of takju by a modified nuruk. Korean J. Food Nutr. 12: 427-432 (1999)
  10. Lee CH, Tae WT, Kim GM, Lee HD. Studies on the pasteurization conditions of takju. Korean J. Food Sci. Technol. 23: 44-51 (1991)
  11. Park YG, Kim HJ. Effect of ozon and UV treatment of groundwater on the quality of wine. Korean J. Food Sci. Technol. 36: 255-261 (2004)
  12. Moon HJ, Chang HG, Mok CK. Selcetion of lactic starter for the improvement of jwungpyun manufacturing process. Korean J. Food Sci. 31: 1241-1246 (1999)
  13. Yoon S, Lee CJ, Park HW, Myung CO, Choi EJ, Lee JJ. Effect of raw soy flour addition to Jeung-pyun pizza on fermentation time and viscosity of batters and texture and general desirabiluty of Jeung-pyun pizza. Korean J. Soc. Food Sci. 16: 267-271 (2000)
  14. Yoon SJ. Quality characteristics of jeungpyun with different rations of makkulli leaven to water. Korean J. Soc. Food Cookery Sci. 19: 11-16(2003)
  15. Cho MK, Lee WJ. Preparation of high-fiber bread with soybean curd residue and Makkolli (rice wine) residue. J. Korean Soc. Food Sci. Nutr. 25: 632-636 (1996)
  16. Jeong JW, Park KJ. Quality characteristics of loaf bread added with takju powder, Korean J. Food Sci. Technol. 38: 52-58 (2006)
  17. AOAC. Official Method of Analysis of AOAC 1ntl. 16th ed. Method 943.02. Association of Official Analytical Chemists, Arlington, VA, USA (1995)
  18. Han EH, Lee TS, Noh BS, Lee DS. Quality characteristics in mash of takju prepared by using differnent nuruk during fermentation. Korean J. Food Sci. Technol. 29: 555-562 (1997)
  19. Lee CY, Kim TW, Sung CK. Studies on the souring of Hansan Sogokju (Korean traditional rice wine). Korean J. Food Sci. Technol. 28: 117-121 (1996)
  20. Lee TS, Choi JY, Volatile flavor components in takju fermentation with mashed glutinous rice and barley rice. Korean J. Food Sci. Technol. 30: 638-643 (1998)
  21. Kim NM, Kim DH. Quality changes of cinnamon extract prepared with various drying methods. Korean J. Food Nutr. 13: 152-157 (2000)
  22. Shin DB. Effects of extraction and dehydration methods on flavour compounds of garlic powder. PhD thesis, Chung-Ang University, Seoul, Korea (1996)
  23. Lee SM, Lee TS. Effect of roasted rice and defatted soybean on the quality characteristics of Takju during fermentation. J. Nat. Sci. 12: 71-79 (2000)
  24. An DS, Woo KL, Lee OS. Processing of powdered jujube juice by spray drying. J. Korean Soc. Food Sci. Nutr. 26: 81-88 (1997)