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Effect of the container and temperature on the quality of buckwheat (Fagopyrum esculentum) Soksungjang during storage

용기 및 온도에 따른 저장 중 메밀 속성장의 품질특성

  • Lee, Sun Young (Department of Agro-Food Resources, National Academy of Agricultural Science, RDA) ;
  • Baik, Soo Hwa (Department of Agro-Food Resources, National Academy of Agricultural Science, RDA) ;
  • Choi, Hye Sun (Department of Agro-Food Resources, National Academy of Agricultural Science, RDA)
  • 이선영 (국립농업과학원 농식품자원부) ;
  • 백수화 (국립농업과학원 농식품자원부) ;
  • 최혜선 (국립농업과학원 농식품자원부)
  • Received : 2014.03.12
  • Accepted : 2014.04.14
  • Published : 2014.04.30

Abstract

This study was performed to provide fundamental information regarding the quality change of buckwheat soksungjang (BWS) during its storage. BWS was divided into three different containers (pot, plastic, and glass) and was stored at three different temperatures (5, 15, and $25^{\circ}C$), and the changes in pH, acidity, amino-type nitrogen, total bacterial count, and chromaticity were examined during the storage period. The pH (0 day, pH 4.37) and acidity (0 day, 2.93% acidity) of the samples, except at the 15 and $25^{\circ}C$ pots, did not show any significant change during storage, but 98 days after storage, the pH values of the 15 and $25^{\circ}C$ pots were pH 5.6 and 7.4, and their acidity values were 1.85 and 0.71%, respectively. At 98 days, the amino-type nitrogen of the $25^{\circ}C$ plastic sample had slightly increased to $0.75{\pm}0.01%$, and that of the $25^{\circ}C$ pot had drastically risen to $0.92{\pm}0.01%$. It was also shown that little change in the total bacterial count was found during the experiment period in every sample. The chromaticity results confirmed that the L (lightness), a (redness), and b (yellowness) values of the $25^{\circ}C$ pot sample showed relatively large changes during storage compared to the other samples. These results suggest that the desirable storage temperature of BWS is in the range of $5-15^{\circ}C$, and that a glass container is the most suitable container for BWS as it can reduce the quality alteration during storage.

본 연구에서는 메밀 속성장의 저장, 유통 과정 중 품질 특성을 조사하고자 30일간 발효, 숙성 시킨 메밀 속성장을 다양한 용기(항아리, 플라스틱, 유리)에 담아 $5^{\circ}C$, $15^{\circ}C$, $25^{\circ}C$에 저장시킨 후 기간에 따른 pH, 산도, 아미노태 질소, 총 균수, 색도의 변화를 관찰하였다. 그 결과 항아리($15^{\circ}C$, $25^{\circ}C$)에 저장되었던 실험군을 제외한 나머지 실험군은 저장기간 동안 초기의 pH 4.5를 유지하는 경향을 보였으며 항아리($15^{\circ}C$, $25^{\circ}C$)시료는 pH가 시간이 지남에 따라 증가하여 저장 98일에는 각각 pH 5.6, pH 7.4로 증가 하였다. 또한 항아리($15^{\circ}C$, $25^{\circ}C$)에 저장되었던 실험군의 산도는 저장기간에 따란 점차 증가하는 경향을 보였는데 항아리($125^{\circ}C$) 시료는 저장 98일(1.85%), 항아리($25^{\circ}C$) 시료는 저장 91일(0.71%)에 낮은 산도를 나타내었다. 플라스틱($25^{\circ}C$) 실험군의 아미노태 질소 함량은 저장 98일에 0.751%이었으며, 항아리($25^{\circ}C$)에 저장된 실험군은 0.92%로 다른 실험군에 비하여 그 함량이 크게 증가하였다. 또한 저장기간 동안 샘플의 총균수는 모든 실험군에서 전체적으로 뚜렷한 증가나 감소의 경향을 보이지는 않았다. 색도의 경우, 항아리($25^{\circ}C$)에 저장된 시료의 경우, L, a, b의 모든 값에서 가장 큰 변화를 보였으며 저장 온도가 높을 수록 L 값이 낮아지는 현상을 확인할 수 있었다. 따라서, 본 연구결과 메밀 속성장의 저장, 유통과정에서 $25^{\circ}C$보다 $5{\sim}15^{\circ}C$를 유지하는 것이 품질 변화를 줄일 수 있는 것으로 확인 되었으며, 항아리와 플라스틱에 비하여 유리병에 보관하는 것이 제품을 보존하는데 있어 탁월한 것으로 확인되었다. 이러한 실험 결과는 메밀 속성장의 저장성 및 유통기한 설정에 기초자료로 제시하고자 한다.

Keywords

References

  1. Yoon SS (1985) Korean food (history and cuisine). 4thed. Suhaksa, Seoul, Korea, p 54-59
  2. Krkoskova B, Mrazova, Z (2005) Prophylactic components of buckwheat. Food Res Int, 38, 561-568 https://doi.org/10.1016/j.foodres.2004.11.009
  3. Prestamo G, Pedrazuela A, Penas E, Lasuncion MA, Arroyo G (2003) Role of buckwheat diet on rats as prebiotic and healthy food. Nutr Res, 23, 803-814 https://doi.org/10.1016/S0271-5317(03)00074-5
  4. Choi HS, Lee SY, Beak SY, Koo BS, Yoon HS, Park HY and Yeo SH (2011) Quality characteristics of Buckwheat (Fagopyrum esculentum) Soksungjang. Korean J Food Sci Technol, 43, 77-82 https://doi.org/10.9721/KJFST.2011.43.1.077
  5. Joo HK, Kim ND (1996) Study on the browning inhibition in soybean paste (Doenjang). J Food Sci Technol, 1, 29-40
  6. Jang JD, Hwang YI, Lee DS (2000) Effect of packaging conditions on the quality changes of fermented soybean paste and red pepper paste. J Korea Soc Packaging Sci Tech, 6, 31-40
  7. Song SH (1968) Preservation of fermented soybean paste. Technical research institute in army, Daejon, Korea, p 24-28
  8. Kim DM, Kim SH, Lee JM, Kim JE, Kang SC (2005) Monitoring of quality characteristics of Chungkookjang products duringstorage for shelf life establishment. J Korean Soc Appl Biol Chem, 48, 132-139
  9. Shin AG, Lee YK, Jung YK, Kim SD (2008) Quality and storage characteristics of low salted onion and five cereals-Doenjang. Korean J Food Preserv, 15, 174-184
  10. AOAC (2002) Official Methods of Analysis of AOAC International 14th ed. Association of Official Analytical Communities, Washington D.C. USA, p 50-58
  11. Choi HS, Joo SJ, Yoon HS, Kim KS, Song IG, Min KB (2007) Quality characteristics of Hwangki (Astragalus membranaceus) Cheonggukjang during fermentation. Korean J Food Preserv, 14, 356-363
  12. Kim GT, Hwang YI, Lim SI, Lee DS (2000) Carbon dioxide production and quality changes in Korean fermented soybean paste and hot pepper soybean paste. J Korean Soc Food Sci Nutr, 29, 807-813
  13. Park CK, Nam JH, Song HI (1990) Studies on the shelf life of brick shape improved Meju. Korean J Food Sci Technol, 22, 82-87
  14. Kim JS, Choi SH, Lee SD, O MJ (1999) Quality changes of sterilized soybean paste during its storage. J Korean Soc Food Sci Nutr, 28, 1069-1075
  15. Yoo SM, Kim JS, Shin DH (2001) Quality changes of traditional doenjang fermented in different vessels. J Korean Soc Agric Chem Biotechnol, 44, 230-234
  16. Park JS, Lee MR, Kim JS, Lee TS (1994) Compositions of nitrogen compound and amino acid in soybean paste (Doenjang) prepared with different microbial sources. Korean J Food Sci Technol, 26, 609-615
  17. Kum YS, Han O (1997) Changes in physicochemical properties of Kochujang and Doenjang prepared with extrudated wheat flour during fermentation. J Korean Soc Food Sci Nutr, 26, 601-605
  18. 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 Soc Food Sci, 14, 463-467
  19. Kim SS, Kim SK, Ryu MK, Cheigh HS (1983) Studies on the color improvement of Doenjang (fermented soybean paste) using various Aspergillus oryzae strains. Korean J Appl Micro, 11, 67-74

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