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Quality Characteristics of Frozen Aster scaber according to Various Blanching Treatment Conditions

Blanching 처리 조건에 따른 동결 취나물의 품질 특성

  • Received : 2011.11.10
  • Accepted : 2012.01.18
  • Published : 2012.02.29

Abstract

In this study, we determined the optimum blanching conditions for pretreatment of Aster scaber prior to freezing to ensure its long, safe preservation as a fine cooking ingredient. Frozen-thawed A. scaber did not significantly differ between blanching groups, but the blanched group showed significantly higher Hunter L, a, and b values than the un-blanched group (p<0.05). Higher temperatures and longer treatment times increased softness; hardness did not significantly differ between the blanched and un-blanched groups of frozen-thawed A. scaber (p<0.05). Total bacterial counts and the presence of coliforms seemed to decline with blanching treatments, but treatment temperature and time did not influence this reduction. Over 95% of peroxidase activity was inactivated by blanching treatment but increased slightly after thawing. The sensory evaluation of the frozen-thawed A. scaber by test group showed the A. scaber blanched at $90^{\circ}C$ for 3 min to be the most highly preferred (p<0.05).

본 연구에서는 취나물을 동결 채소화 함으로써 장기간 안전하게 보관하면서 조리에 사용할 수 있도록 동결 채소화를 시도하고자 전처리 단계로서 blanching 적정조건을 설정하였다. 취나물의 표면색도 변화는 동결한 후 해동한 취나물은 blanching 처리구간에 유의적인 차이가 나타나지 않았으나, 무처리구보다는 L, a 및 b 값이 유의적으로 높게 나타났다(p<0.05). 경도는 blanching 온도가 높고 처리시간이 길어질수록 감소하는 경향을 나타내었으며, 동결한 후 해동한 무처리구와 blanching 처리구의 경도는 유의적인 차이가 나타나지 않았다(p<0.05). 총균수 및 대장균군수는 blanching 처리에 의하여 감소하는 경향을 나타내었으나, 처리온도 및 시간에 따른 차이는 나타나지 않았다. Peroxidase activity는 blanching 처리에 의하여 약 95% 이상 불활성화 되었으며, 해동 후에는 약간 증가되는 경향을 나타내었다. 취나물의 해동 후 조리전과 후의 외관, 색, 이취, 조직감, 그리고 맛 등의 전반적인 품질 요소들을 종합하여 전체 기호도를 조사한 결과 $90^{\circ}C$에서 3분 동안 blanching 처리한 처리구가 유의적으로 가장 우수한 것으로 나타났다(p<0.05).

Keywords

References

  1. KFDA. 2009. Food Code. Korea Food and Drug Administration, Seoul, Korea.
  2. Jeong JW, Jeong SW, Park KJ. 2003. Changes in internal pressure of frozen fruits by freezing methods. Korean J Food Preserv 10: 459-465.
  3. Lee HE, Lim CI, Do KR. 2007. Changes of characteristics in red pepper by various freezing and thawing methods. Korean J Food preserv 14: 227-232.
  4. Kim YH, Lee DS, Kim JC. 2004. Effect of blanching on textural properties of refrigerated and reheated vegetables. J Korean Soc Food Sci Nutr 33: 911-916. https://doi.org/10.3746/jkfn.2004.33.5.911
  5. Han YS, Park JY. 2001. The microbiological and sensorial properties of frozen bibimbap namul during storage. Korean J Food Cookery Sci 17: 149-155.
  6. Lee MK. 1998. Enzymatic determination of glucose using soybean sprouts peroxidase. Korean J Life Sci 8: 416-420.
  7. Park HO. 1996. A study of pectinesterase, polygalacturonase, lipoxygenase and peroxidase in hot pepper. Korean J Food Nutr 9: 52-58.
  8. Lee K, Kim KH, Kim HK. 2002. Thermal inactivation parameters of peroxidase in Flammulina velutipes and Lyophyllum ulmarium. Korean J Food Sci Technol 34: 1067-1072.
  9. Jung JY, Lim JH, Jeong EH, Kim BS, Jeong MC. 2007. Effect of blanching conditions and salt concentrations on the quality properties of Aster scaber. Korean J Food Preserv 14: 584-590.
  10. Shin DB, Lee YC, Kim JH. 2000. Change in quality of garlic during frozen storage. Korean J Food Sci Technol 32: 102-110.
  11. Ku KH, Cho MH, Park WS. 2002. Characteristics of quality and volatile flavor compounds in raw and frozen pinemushroom (Tricholoma matsutake). Korean J Food Sci Technol 34: 625-630.
  12. Yang JH, Park SH, Yoo JH, Lim HS, Jo JS, Hwang SY. 2003. Effect of freezing methods for kimchi storage stability on physical properties of chinese cabbage. Korean J Food Culture 18: 105-110.
  13. Lee DH, Park SJ, Park JY. 1999. Effect of freezing and thawing methods on the quality of Dongchimi. Korean J Food Sci Technol 31: 1596-1603.
  14. Ha JH, Ha SD, Kang YS, Hong KP, Bae DH. 2007. Microbiological, nutritional, and rheological quality changes in frozen potatoes during storage. Korean J Food Sci Technol 39: 663-668.
  15. Lisiewska Z, Kmiecik W. 1997. Effect of freezing and storage on quality factors in Hamburg and leafy parsley. Food Chem 60: 633-637. https://doi.org/10.1016/S0308-8146(97)00048-4
  16. Prestamo G, Fuster C, Risueno MC. 1998. Effect of blanching and freezing on the structure of carrots cells and their implications for food processing. J Sci Food Agric 77: 223-229. https://doi.org/10.1002/(SICI)1097-0010(199806)77:2<223::AID-JSFA29>3.0.CO;2-2
  17. Kidmose U, Martens HJ. 1999. Changes in texture, microstructure and nutritional quality of carrot slices during blanching and freezing. J Sci Food Agric 79: 1747-1753. https://doi.org/10.1002/(SICI)1097-0010(199909)79:12<1747::AID-JSFA429>3.0.CO;2-B
  18. Gomez G F, Sjoholm I. 2004. Applying biochemical and physiological principles in the industrial freezing of vegetables: a case study on carrots. Trends Food Sci Technol 15: 39-43. https://doi.org/10.1016/j.tifs.2003.07.006
  19. Favell DJ. 1998. A comparison of the vitamin C content of fresh and frozen vegetables. J Chem 62: 59-64.
  20. Lee MK, Park IS. 1998. Enzymatic characterization of peroxidase from soybean sprouts. J Korean Soc Food Sci Nutr 27: 1143-1147.
  21. Choi NS, Oh SS, Lee JM. 2001. Change of biologically functional compounds and quality properties of Aster scaber (Chamchwi ) by blanching conditions. Korean J Food Sci Technol 33: 745-752.
  22. Lee HS. 1995. The measurement methods of the textural characteristics of fermented vegetables. Korean J Soc Food Sci 11: 83-91.
  23. Lim JH, Choi JH, Hong SI, Jeong MC, Kim DM. 2005. Mild heat treatments for quality improvement of fresh-cut potatoes. Korean J Food Preserv 12: 552-557.
  24. Rudra Shalini G, Shivhare US, Basu S. 2008. Thermal inactivation kinetics of peroxidase in mint leaves. J Food Eng 85: 147-153. https://doi.org/10.1016/j.jfoodeng.2007.07.010
  25. Lee MK, Kil JO, Park IS. 1999. Thermostability and reactivation of peroxidase from soybean sprouts. J Korean Soc Food Sci Nutr 28: 81-86.
  26. Ko JW, Chung HS, Lee JH, Choi YH. 1998. Effects of blanching and salting on the quality of immatured soybeans during frozen storage. Korean J Postharvest Sci Technol 5: 320-325.

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