Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Effect of Storage Temperature on the Microbiological and pH Changes of Mackerel, Croaker, and Saury During Storage

저장온도가 고등어, 조기, 꽁치의 저장중 미생물 및 pH의 변화에 미치는 영향

  • Sungbae Byun (Dept.of Food Science and Technology, Chungnam National University) ;
  • Lee, Sehee (Dept.of Food Science and Technology, Chungnam National University) ;
  • Lee, Seunghee (Dept.of Food Science and Technology, Chungnam National University) ;
  • Lee, Yongwoo (Dept.of Food Science and Technology, Chungnam National University) ;
  • Namkyu Sun (Dept.of Food Science and Technology, Chungnam National University) ;
  • Song, Kyung-Bin (Dept.of Food Science and Technology, Chungnam National University)
  • Published : 2003.06.01
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Abstract

To examine the quality changes of three typical fishes under usual storage conditions during marketing, we determined the total bacterial counts and pH values during storage of mackerel, croaker, and saury. Mackerels were stored at 0$^{\circ}C$ and on ice at 19$^{\circ}C$, which is the usual storage condition in a local market and croakers and saury were stored at 0$^{\circ}C$ and 4$^{\circ}C$. Total bacterial counts of mackerel, croaker, and saury were 3,2${\times}$10$^3$, 2.9${\times}$10$^3$, and 2.8 x 10$^4$CFU/g at the time of storage respectively. Total bacterial counts of mackerel stored on ice at 19$^{\circ}C$ increased during storage and reached to 8.4 x 10$\^$6/ CFU/g at day 6, while those stored at 0$^{\circ}C$ decreased up to 2 days of storage and increased to 5.6 ${\times}$ 10$^4$CFU/g. For croaker and saury, total bacterial counts at 0$^{\circ}C$ were 2.5 ${\times}$ 10$\^$5/ and 2.1 x 10$\^$5/ CFU/g at day 6, respectively, while those stored at 4$^{\circ}C$ had 3.6 x 10$\^$6/ and 2.6 ${\times}$ 10$\^$5/ CFU/g. the pH value or mackerel was 5.56 at the time or storage, yet it increased to 6.04. The pH changes of croaker and saury had a similar pattern with that of mackerel, which increased with time of storage. These results suggest that storage of fishes at 0$^{\circ}C$ should be better than those at 4$^{\circ}C$ or on ice at 19$^{\circ}C$ in terms of microbial safety as well as quality and shelf-life of fishes.

일반적으로 실제 저장 유통되는 조건 하에서 생선의 품질 변화를 예측하기 위하여 대표적 생선인 고등어, 조기, 꽁치를 대상으로 미생물과 pH의 변화를 측정하였다. 고둥어의 저장조건으로는 실제 유통되고 있는 조건인 실온 얼음상과 $0^{\circ}C$에 저장하면서 그 변화를 관찰하였으며 조기와 꽁치는 $0^{\circ}C$와 4$^{\circ}C$에 각각 저장하면서 저장온도에 따른 변화를 관찰하였다 고등어의 초기 총균수는 3.2${\times}$$10^3$CFU/g 이었으며 실온 얼음상에서는 저장 6일 후 8.4${\times}$$10^{6}$까지 증가하였다. 반면, $0^{\circ}C$에서 저장한 고등어의 경우 저장 2일까지 총균수가 일시적으로 감소하는 경향을 보였다가 점차 증가하여 6일째 5.6${\times}$$10^4$CFU/g을 나타냈다. 조기와 꽁치의 초기 총균수는 각각 2.9x$10^3$, 2.8x$10^4$CFU/g 이었으며 $0^{\circ}C$에서 6일간 저장하는 동안 점차 증가하여 각각 2.5x$10^{5}$과 2.1x$10^{5}$ CFU/g 으로 나타났다. 또한, 4$^{\circ}C$에서 저장한 조기와 꽁치의 총균수는 3.6${\times}$$10^{6}$과 2.6${\times}$$10^{5}$ CFU/g으로 나타났으며 이러한 결과는 생선의 저장에 있어 $0^{\circ}C$가 미생물의 번식을 억제하는데 보다 효과적인 것으로 나타났다. 또한, pH의 경우 실험구 모두에서 저장 시간이 증가함에 따라 점차적으로 증가하는 경향을 보였다. 본 연구 결과는 $0^{\circ}C$에서의 저장이 4$^{\circ}C$나 실온 얼음상보다 미생물학적 안전성, 품질 변화 및 저장기간 연장 측면에서 보다 바람직하다는 것을 보였다.을 보였다.

Keywords

References

  1. Simeonidou, S., Govaris, A. and Vareltzis, K. (1998) Quality assessment of seven Mediterranean fish species during storage on ice. Food Res. Int., 30, 479-484
  2. Crapo, C., Himelbloom, B., Brown, E., Babbitt, J. and Reppond, K. (1991) The effects of ice and chilled seawater storage on pink salmon quality. Proc. 15th Ann.Trop. and Subtrop. Fish Technol. Conf. of the Am., Univ.of FL., Gainesville, FL, U.S.A. p. 169-179
  3. Kolodziejska, I., Niecikowska, C., Januszewska. E. andSikorski, Z.E. (2002) The microbial and sensory qualtiy of mackerel hot smoked in mild conditions. Lebensm.-Wiss. U.-Technol., 35, 87-92 https://doi.org/10.1006/fstl.2001.0824
  4. Oh, S.W., Jo, J.H. and Lee, N.H. (1999) Application of ATP bioluminescence assay for a rapid estimation of microbial levels in mackerel (Scomber japonicus). Koean J.Food Sci. Technol., 31, 1345-1348
  5. Lee, K.H., Hong, B.I. and Jung B.C. (1998) Processing of low salt mackerel fillet and quality changes during storage.Korean J. Food Sci. Technol., 30, 1070-1076
  6. Mendes, R., Silva, H.A., Nunes, M.L. and Empis, J.M.A.(2000) Deteriorative changes during ice storage of irradiated bule jack mackerel (Trachurus picturatus). J. FoodBiochem., 24, 89-105
  7. Jung, B.M., Chung, G.H. and Shin, T.S. (2002) Physicochemical characteristics of seasoned and dried a redlip croaker, Pseudosciaena crocea fillet. Korean J. FoodSci. Technol., 31, 553-558
  8. Church, N. (1998) Map fish and crustaceans sensory enhancement. Food Sci. Technol. Tod., 12, 73-83
  9. Pacheco-Aguilar, R., Lugo-S$\aa$nchez, M.E., Robles-Burgueno,M.R. (2000) Postmortem biochemical and functional characteristic of monterey sardine muscle stored at $0^{\circ}C$. J.Food Sci., 65, 40-47 https://doi.org/10.1111/j.1365-2621.2000.tb15953.x
  10. Kim, S.H., Morrissey, K.G., Field, K.G., Wei, C.I. and An,H. (2002) Occurrence of histamine-forming bacteria in albacore and histamine accumulation in muscle at ambient temperature. J. Food Sci., 67, 1515-1521 https://doi.org/10.1111/j.1365-2621.2002.tb10315.x
  11. Silva, C.C.G., Da Ponte, J.B. and Enes Dapkevicius,M.L.N. (1998) Storage temperature effect on histamineformation in big eye tuna and skipjack. J. Food Sci., 63,644-647 https://doi.org/10.1111/j.1365-2621.1998.tb15803.x