中文摘要：

为了解梭鱼的应用价值,对江苏沿海滩涂池塘养殖梭鱼（均质量（445.8±26.9）g）6种组织（鱼头、鱼皮、背肌、腹肌、肝脏、腹脂）的脂肪分布、性质、脂肪酸组成进行分析和评价。索氏提取法测定组织中脂肪含量,滴定法测定脂肪的碘值和酸价,气相色谱-质谱法分析脂肪酸的组成。结果表明：梭鱼体内各组织脂肪分布差异显著（P〈0.05）,其中背肌和腹肌中脂肪含量分别为3.66%、10.16%;各组织脂肪的不饱和程度较高,碘值为90～106 g/100 g;各组织脂肪酸价较高,介于4～9 mg KOH/g之间;梭鱼脂肪中C22∶6n 3和C20∶5n 3含量丰富,品质好;鱼头、背肌、腹肌中饱和脂肪酸、单不饱和脂肪酸、多不饱和脂肪酸构成比例约为1∶1.5∶（0.7～0.8）,n-3/n-6多不饱和脂肪酸比值在0.7～0.8之间,组成合理;肝脏和腹脂中脂肪含量丰富,其中含有大量的n-3和n-6多不饱和脂肪酸,因此梭鱼的内脏也具有较好的可利用前景。

英文摘要：

To explore the application value of mullets（Liza haematocheila）, six tissues including fish head, skin, dorsal muscle, abdominal muscle, liver and abdominal fat of mullets（average weight（445.8 ± 26.9） g） from coastal beach pools in Jiangsu Province were investigated for fat distribution, fat properties and fatty acid composition. Lipid content was determined using Soxhlet extraction, and iodine value and acid value were measured using titration method, and fatty acid composition was identified by gas chromatograph-mass spectrometry（GC-MS）. The results showed that significant differences in fat contents were observed among six tissues（P 0.05）, and that the fat contents of dorsal muscle and abdominal muscle were 3.66% and 10.16%, respectively. The fats of mullets were highly unsaturated with iodine value in the range of 90–106 g/100 g. The fatty acid values were high, which were between 4 and 9 mg KOH/g. The lipids of mullets were of good quality, rich in C22：6n 3（docosahexaenoic acid, DHA） and C20：5n 3（eicosapentaenoic acid, EPA）. The proportions of saturated fatty acids（SFA）, monounsaturated fatty acids（MUFA）, and polyunsaturated fatty acids（PUFA） of fish head, dorsal muscle and abdominal muscle of mullets were about 1：1.5：（0.7-0.8）, and reasonable ratios between n-3 and n-6 PUFAs in the range of 0.7–0.8 were observed. As for the liver and abdominal fats, plenty of n-3 and n-6 PUFA were found. Therefore, the viscera of mullets could also have good utilization prospect.