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Issue
Korean Journal of Chemical Engineering,
Vol.34, No.8, 2255-2264, 2017
Effects of process parameters on EPA and DHA concentrate production from Atlantic salmon by-product oil: Optimization and characterization
Haq M, Getachew AT, Saravana PS, Cho YJ, Park SK, Kim MJ, Chun BS
Supercritical carbon dioxide (SC-CO2) extracted Atlantic salmon frame bone oil (SFBO) was used for Eicosapentaenoic acid and Docosahexaenoic acid (EPA-DHA) concentrate production by urea complexation. Urea/ fatty acids (2.5 to 4.0 w/w), crystallization temperature (-24 to -8°C) and crystallization time (8 to 24 h) were studied by Box-Behnken Design (BBD) to maximize EPA-DHA content. Highest EPA-DHA content was 60.63% at urea/fatty acids 4.0 w/w, crystallization temperature -15.67 °C and crystallization time 8 h. EPA-DHA concentrate showed improvement of EPA-DHA from 6.39% in SFBO to 62.34%, increase of astaxanthin content from 21.33 μg/g in SFBO to 44.69 μg/g in EPA-DHA concentrate, no residual urea and reduction of many off-flavor compounds. The EPA-DHA yield showed an inverse relation with the urea/fatty acids, whereas its concentration increased proportionally with urea/ fatty acids. Therefore, EPA-DHA concentrate produced from SFBO by urea complexation may be an efficient technique to provide ω-3 polyunsaturated fatty acids to the consumers.
Keywords: Salmon Frame Bone Oil; Eicosapentaenoic Acid; Docosahexaenoic Acid; Optimization; Volatile Organic Compounds
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[Cited By]
  1. Park JS, Cho YJ, Jeong YR, Chun BS, Clean Technology, 25(4), 275, 2019
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