中国黄海海域部分海鱼脂肪酸含量分析

Fatty acids content of common marine fish from Yellow Sea of China

目的分析中国黄海海域部分可食用海鱼的脂肪酸含量。方法于青岛市大型水产批发市场采集我国黄海海域38种海鱼样品，提取脂肪后甲酯化，以气相色谱法分析其脂肪酸含量。结果38种海鱼总脂含量范围为0．459（鲡鱼）-17．086g／100g（海鲫）。海鱼中含量最多的饱和脂肪酸（SFA）、单不饱和脂肪酸（MUFA）、11-6和n-3多不饱和脂肪酸（PUFA）分别为C16：0、C18：1n9、C20：4n6和C22：6n3。SFA总量范围为44．5（黄线狭鳕）～2442．9mg／100g（海鲫），P50=345．6mg／100g；MUFA总含量范围为19．8（黄线狭鳕）至2753．5rag／100g（青鳞鱼），P50=242．3mg／100g；n-6PUFA总量范围9．5mg／100g（黄线狭鳕）～939．5（梭鱼），P50=42．5mg／100g；总n-3PUFA含量范围为84．3（鳎鱼）～1452．2mg／100g（海鲫），P50=324．3mg／100g。n-3PUFA、EPA和DHA的含量均与总脂含量呈正相关（P〈0．001）。结论黄海海域大多数海鱼的不饱和脂肪酸含量丰富且具有种属差异性，可以作为n-3不饱和脂肪酸的良好来源。

Objective To survey the Yellow Sea of China. Methods The fatty fatty acids acids contents of common marine fish from were extracted from 38 species of common marine fish collected from Yellow Sea and then separated and detected by gas chromatography. Results The average content of total lipids for 38 species of marine fish ranged from 0. 459 （platycephalus indicus） to 17. 086 g/100 g i Embiotoca jacksoni）. The main SFA, MUFA, n-6PUFA and n-3PUFA were C16：0, C18： 1n9, C20：4n6 and C22： 6n3 respectively. The content of total SFA ranged from 44.5 mg/100 g （Alaska po-llack） to 2442.9 mg/100 g （Embiotocajacksoni）. The content of total MUFA was in the range of 19. 8 （Alaska po-llack） to 2753.5 mg/100 g （ Harengtdazunasi Bleeker）. The content of total n-6PUFA varied between 9.5 （Alaska po-llack） and 939.5 mg/100 g （Chelon haematocheilus）. The content of total n-3PUFA ranged from 84.3 （platycephalus indicus） to 1452.2 mg//100 g （Embiotoca jacksoni）. The content of n-3PUFAs, EPA and DHA were positively associated with the content of total lipids （P 〈 0. 001 ）. Conclusion There were significant differences between the 38 species of common marine fish from Yellow Sea of China. Most of common ma.rine fish from Yellow Sea could be taken as good sources of n-3PUFA.