论文部分内容阅读
以废弃罗非鱼内脏作为原料,分别采用索氏提取法(SE)、超声提取法(UE)及高压脉冲电场提取法(PEFE)从鱼内脏中提取油脂,运用气相色谱与质谱联用技术(GC-MS)分析鉴定不同提取方法下油脂中脂肪酸成分及相对含量。从罗非鱼内脏油脂提取率、脂肪酸种类及相对含量等方面对3种提取方法进行了比较。结果表明,3种方法的罗非鱼内脏油脂提取率差别不大。PEFE获取的脂肪酸种类及相对含量均高于SE和UE法。PEFE法提取的油脂具备单不饱和脂肪酸相对含量高,n-6与n-3系列脂肪酸比例小的特点。研究为罗非鱼内脏油脂的高值化利用提供参考。
The waste tilapia offal was used as raw material to extract oil from viscera of fish using Soxhlet extraction (SE), ultrasonic extraction (UE) and high-voltage pulsed electric field extraction (PEFE), respectively. Gas chromatography-mass spectrometry GC-MS) analysis of fatty acids composition and relative content of oil under different extraction methods. Three extraction methods were compared from the visceral fat extraction rate, fatty acid type and relative content of tilapia. The results showed that the three methods of tilapia visceral fat extraction rate difference is not big. PEFE fatty acid species and the relative content were higher than the SE and UE law. PEFE extraction of oil with monounsaturated fatty acids with high relative content, n-6 and n-3 series of fatty acids with a small proportion of features. The research provided a reference for the high value utilization of visceral fat of tilapia.