食品科学

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鳡鱼的脂肪含量测定及脂肪酸成分分析

易翠平,钟春梅   

  1. 长沙理工大学化学与生物工程学院,湖南 长沙 410004
  • 出版日期:2013-07-25 发布日期:2013-08-02

Lipid Content and Fatty Acid Profile of Elopichthys bambusa

YI Cui-ping,ZHONG Chun-mei   

  1. School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410004, China
  • Online:2013-07-25 Published:2013-08-02

摘要:

为了解鳡鱼油的应用价值,采用重量法分析鱼背、鱼腹、鱼骨及内脏的脂肪含量,气相色谱法分析脂肪酸组成。结果表明,同一鳡鱼的不同部位及不同大小鳡鱼的同一部位,脂肪含量均有极显著差异(P<0.01),脂肪含量随着鳡鱼体质量增加而显著升高,9.6~11.1kg的鳡鱼内脏脂肪含量达到(68.38±2.12)%。在鳡鱼脂肪中,饱和脂肪酸含量为29.05%~30.74%,以C16:0含量最高;不饱和脂肪酸含量为69.25%~70.94%,以C18:1ω9含量最高;多不饱和脂肪酸含量为20.84%~29.37%,其中C20:5ω3与C22:6ω3含量分别为1.78%~2.69%、3.06%~4.78%;ω3/ω6脂肪酸比值为0.79~1.64。与鲤鱼、鲢鱼、草鱼、大豆油和猪油比较,鳡鱼油具有独特的脂肪酸组成。

关键词: 鳡鱼, 脂肪, 脂肪酸

Abstract:

The lipid content of the back, belly, bone and viscera of yellowcheek carp (Elopichthys bambusa) was analyzed
by gravimetric method, and the fatty acid composition was tested by gas chromatography. The results showed that there were
significant (P < 0.01) differences among different parts of fish and the same parts from fish of different weights. The lipid content
increased with the size of fish body, and 9.6–11.1 kg of E. bambusa showed a lipid content of (68.38 ± 2.12)% in the viscera. In
the fatty acids of E. bambusa, saturated fatty acid (SFA) content was 29.05%–30.74% and C16:0 was the highest among the SFAs;
unsaturated fatty acid (USFA) content was 69.25%–70.94% and C18:1ω9 was the most abundant USFA; polyunsaturated fatty acid
(PUFA) content was 20.84%–29.37%, C20:5ω3 and C22:6ω3 content was 1.78%–2.69%, 3.06%–4.78% respectively; the ratio of ω3/
ω6 fatty acid was between 0.79 and 1.64. The fish oil of E. bambusa had unique fatty acid composition compared with Cyprinus
carpio, Hypephthalmichtys molitri, Ctenopharyngodon idellu, soy oil and lard oil.

Key words: Elopicthys banbusa, lipid, fatty acid