Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Physiological Properties of Extracts and the Chemical Composition of Tetraselmis sp. JK-46 Cultured with Deep Seawater

해양심층수로 배양한 해양미세조류 Tetraselmis sp. JK-46의 성분 조성 및 생리활성

  • Joo, Dong-Sik (Deprtment of Foodservice Industry, Hanzhong University) ;
  • Kim, Kwang-Woo (Deprtment of Food Science, Kangnung National University) ;
  • Cho, Soon-Yeong (Deprtment of Food Science, Kangnung National University)
  • Received : 2010.10.22
  • Accepted : 2011.02.10
  • Published : 2011.02.28
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Abstract

This study examined Tetraselmis sp. JK-46 isolated from seawater from the East Sea. Deep seawater (DSW) had a greater effect on the growth of Tetraselmis sp. JK-46 than surface seawater (SSW). The crude protein, lipid, carbohydrate and ash contents of Tetraselmis sp. JK-46 cultured with DSW were 27.2, 37.1, 13.2 and 26.3 %, respectively, and these values were similar to the results for samples cultured with SSW. The contents of Mg, Ca, Fe and K in the DSW cultured samples were 7080.3, 1009.6, 251.2, and 2749.7 mg/100 g, respectively. The fatty acid compositions of Tetraselmis sp. JK-46 cultured with DSW and SSW were 53.7 and 49.0 % polyunsaturated fatty acids (PUFA) and 25.7 and 30.7 % saturated fatty acids (SFA), respectively. The total amino acid contents of the samples cultured with DSW and SSW were 7392.6 and 6376.0 mg/100 g respectively. The 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity of Tetraselmis sp. JK-46 extracts increased with the concentration of the chloroform and ethyl acetate fractions. The half maximal inhibitiory concentrations ($IC_{50}$) of the chloroform and ethyl acetate fractions of DSW and SSW cultured samples were 1.2 and 2.6 mg/mL, and 3.1 and 3.3 mg/mL, respectively. The ethyl acetate fractions of DSW and SSW cultured samples has anticoagulant activity and the activated partial thromboplastin times (APTT) were 93.4 and 89.3 sec., respectively. The chloroform and ethyl acetate fractions showed antimicrobial activity against Bacillus subtilis, Escherichia coli and Candida albicans.

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