Fisheries and Aquatic Sciences

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Analysis of Headspace Volatile Compounds in Cold-stored and Freeze-dried Krill Eupausia superba

  • Park, Jin-Yong (Department of Food Science and Technology, Pukyong National University) ;
  • Kim, Ye-Joo (Department of Food Science and Technology, Pukyong National University) ;
  • Lee, Yang-Bong (Department of Food Science and Technology, Pukyong National University)
  • Received : 2014.01.08
  • Accepted : 2014.03.06
  • Published : 2014.06.30
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Abstract

Headspace volatile compounds of cold-stored and freeze-dried Krill Eupausia superba were analyzed to investigate their flavor qualities using a system combining a dynamic headspace isolator, an automatic thermal desorber, and a gas chromatograph-mass-selective detector. Levels of oxidation products of polyunsaturated fatty acids such as aldehydes, alcohols, and ketones, which are known to give seafood a nasty smell because of their low flavor threshold values, increased during cold storage of krill. Notably, levels of 2-methylpropanal, 3-methylbutanal, 2-methylbutanal and 2-butanone increased during its storage. They can be considered index compounds of off-odor according to freshness degradation during storage. By contrast, in freeze-dried krill powder, levels of aldehydes, ketones, and aromatic compounds decreased rapidly. Only alcohols, which did not greatly affect the food flavor, were isolated in large amounts. It was confirmed that levels of oxidized compounds of krill increased during cold storage, but decreased in freeze-dried krill.

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References

  1. Anh JS. 2005. Reaction technology for making natural crab-like flavoran from snow crab processing by-products. M.S. Thesis, University of Changwon, Changwon, KR.
  2. Ahn JS, Cho WJ, Jeong EJ and Cha YJ. 2006. Changes in volatile flavor compounds in red snow crab chionoecetes japonicus cooker effluent during concentration. J Korean Fish Soc 39, 437-440. https://doi.org/10.5657/kfas.2006.39.6.437
  3. Baek HH. 1994. Enzymatic hydrolysis of crawfish processing by-products for bioflavor production. Ph.D. Dissertation, Louisiana State University, Baton Rouge, LA, US.
  4. Cha YJ. 1992. Volatile flavor components in korean salt-fermented anchovy. J. Korean Soc. Food Nutr. 21, 719-724.
  5. Cha YJ, Kim H, Jang SM and Park JY. 1999. Identification of aroma-active compounds in Korean salt-fermented fishes by aroma extract dilution analysis, 2. aroma-active components in salt-fermented shrimp on the market. J Korean Soc Food Sci Nutr 28, 319-325.
  6. Cha YJ, Cho WJ and Jeong EJ. 2006. Comparison of volatile flavor compounds in commercial crab-like flavorants by analyzing methods. J Life Sci 16, 1243-1249. https://doi.org/10.5352/JLS.2006.16.7.1243
  7. Kim DS and Kim YH. 1999. The effective utilization techniques of krill resources in Antarctic Ocean as new protein food. Bull Food Technol 12, 12-25.
  8. Kim KM. 2011. Development of reaction flavors with enzymatic hydrolysate of krill and its application to teriyaki sauce. Ph.D. Dissertation, University of Pukyong, Busan, KR.
  9. Kim KM, Cho YB, Hwang YJ, Lee DS and Lee YB. 2012. Comparison of general composition of cooked krill and alcalase optimization for maximum antioxidative activity by using response surface methodology. Korean J of Culin Res 18, 15-26.
  10. Kim KM, Park HJ, Nam MH, Kim SB, Chun BS and Lee YB. 2013. Headspace volatile compounds of krill reaction flavor and its application to teriyaki sauce. Korean J of Culin Res 19, 105-115.
  11. Lee DS. 2011. Headspace volatile compounds identified from Alaska pollack and mackerel during storage. M.S. Thesis, University of Pukyong, Busan, KR.
  12. Lee JS, Joo DS, Kim H, Jang SM, Choi HG, Cho SY, Cha YJ and Lee EH. 1997. Flavor compounds in commercial Toha-jeot. J Korean Soc Food Sci Nutr 26, 222-228.
  13. Lee MJ, Lee SJ, Cho JE, Jung EJ, Kim MC, Kim GH and Lee YB. 2002. Flavor characteristics of volatile compounds from shrimp by gc olfactometry. J Korean Soc Food Sci Nutr 31, 953-957. https://doi.org/10.3746/jkfn.2002.31.6.953
  14. Makkhen K. 2012. Development of seafood flavor using glucosamine and other precursors and its application to Teriyaki sauce. M.S. Thesis, University of Pukyong, Busan, KR.
  15. Oh KS. 2002. The character impact compounds of odor evolved from cooked shore swimming crab flesh. Kor J Fish Soc 35, 122-129. https://doi.org/10.5657/kfas.2002.35.2.122
  16. Oh KS, Kang ST and Ho CT. 2001. Flavor constituents in enzyme hydrolysates from shore swimming crab and spotted shrimp. J Korean Soc Food Sci Nutr 30, 787-795.