CAJ | 학술논문

以斑点叉尾鮰内脏为原料,采用一种改进的钾法制备鱼油.钾法提取鱼油的最佳工艺条件为水解pH7.0、料液比1:1.5(g/m1)、水解温度65℃、水解时间35min、氯化钾用量4%和盐析时间10min,该条件下鱼油的提取率达到82.09%,鱼油中的饱和脂肪酸相对含量为20.59%,单不饱和脂肪酸和多不饱和脂肪酸分别为54.48%和15.18%.∑n-3/∑n-6的脂肪酸比值达到3.29,明显高于其他淡水鱼类.以上结果表明,斑点叉尾鮰内脏是生产鱼油的良好来源.
이반점차미회내장위원료,채용일충개진적갑법제비어유.갑법제취어유적최가공예조건위수해pH7.0、료액비1:1.5(g/m1)、수해온도65℃、수해시간35min、록화갑용량4%화염석시간10min,해조건하어유적제취솔체도82.09%,어유중적포화지방산상대함량위20.59%,단불포화지방산화다불포화지방산분별위54.48%화15.18%.∑n-3/∑n-6적지방산비치체도3.29,명현고우기타담수어류.이상결과표명,반점차미회내장시생산어유적량호래원.
Fish oil is usually extracted from the wastes during fish processing. In this paper, fish oil extraction from viscera of channel catfish, Ictalurus punctatus, through a modified potassium hydroxide hydrolysis method, was investigated. The best extraction efficiency was obtained at the hydrolysis condition of pH 7.0, 1:1.5 of viscera-water ratio, 65 ℃ for hydrolysis temperature, 35 min for hydrolysis time, 4% potassium chloride, and 10 min for salting-out. The extraction rate offish oil was up to 82.09% under this optimal condition. The relative content of saturated fatty acids accounted for 20.59% of total fatty acids. The relative content of monounsaturated fatty acids and polyunsaturated fatty acids were 54.48% and 15.18%, respectively. The ratio of n-3 to n-6 polyunsaturated fatty acids is 3.29, which was higher than that of other fresh water fish. Therefore, viscera of channel catfish provided a good resource for fish oil production.