8种颌针鱼肌肉脂肪酸成分分析

Analysis of fatty acids in the muscle of 8 species of needlefish

在秋冬季收集来源于湛江海域的斑鱵、南洋鱵、杜氏下鱵、缘下鱵、瓜氏下鱵、叉尾鹤鱵、尖嘴圆尾鹤鱵、尾斑圆尾鹤鱵8种颌针鱼,测定了其肌肉中的水分与粗脂肪含量,并通过气相色谱法分析了脂肪酸组分。结果显示,8种颌针鱼肌肉含水量66.7%~73.2%,粗脂肪占干重2.04%~2.78%,饱和脂肪酸(SFA)含量为32.10%~42.97%,单不饱和脂肪酸(MUFA)含量为11.99%~35.51%,多不饱和脂肪酸(PUFA)含量为29.37%~43.92%。8种颌针鱼的n-3系脂肪酸(21.19%~38.98%)和n-6系脂肪酸(5.44%~18.24%)均有较高含量,其中瓜氏下鱵H.quoyi和叉尾鹤鱵T.acus EPA+DHA+DPA含量分别为35.55%和33.31%,有较高脂肪酸营养价值和药用价值。杜氏下鱵和叉尾鹤鱵有较高的DPA含量,达8.43%和7.31%。

The fatty acid contents in muscle of eight species of needlefish were determined and compared for the development and utilization of the marine resource.In autumn and winter,8 species of needlefish were collected from Zhanjiang sea area,including Hemiramphus far,Hemiramphus lutkei,Hyporhamp-hus dussumieri,Hyporhamphus limbatus,Hyporhamphus quoyi,Tylosurus acus,Strongylura anastomella and Strongylura strongylura.The moisture and crude lipid of muscle were determined by national standard method and the content of fatty acid in muscle was determined by capillary gas chromatography.The results showed that moisture of the muscle of needlefish was 66.7%~73.2%and crude lipid was 2.04%~2.78%dry weight.The contents of saturated fatty acids(SFA),monounsaturated fatty acids(MUFA),polyunsaturated fatty acids(PUFA)in muscle were 32.10%~42.97%,11.99%~35.51%,29.37%~43.92%,respectively.The content of n-3 fatty acids(21.19%~38.98%)and n-6 fatty acids(5.44%~18.24%)in 8 species of needlefish were high and have higher fatty acid nutritional value and medicinal value,among which the content of H.quoyi and T.acus EPA+DHA+DPA were 35.55%and 33.31%,respectively.The DPA contents in H.dussumieri and T.acus were high,reaching 8.43%and 7.31%,respectively.