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白鱀豚额隆油的研究——Ⅰ.额隆油的脂肪酸组成

邹玉珍1, 蔡琬平1, 顾生明2   

  1. 1. 南京师范学院生物系;
    2. 江苏省植物研究所
  • 出版日期:2011-11-22 发布日期:2011-11-22

STUDIES ON THE MELON OIL OF THE BAIJI, LIPOTES VEXILLIFER——Ⅰ. FATTY ACID COMPONENT OF THE MELON OIL

ZHOU Yuzhen1, CAI Wanping1, GU Shengming2   

  1. 1. Department of Biology Nanjing Normal College;
    2. Institute of Botany of Jiangsu Province
  • Online:2011-11-22 Published:2011-11-22

摘要: 世界珍稀水兽白豚(Lipotes vexillifer.)是我国名贵特产之一,属齿鲸亚目(Odontoceti),淡水豚总科(Platanistoidea),白鱀豚科(Lipotidae)。白鱀豚生活在长江中、下游。借回声定位系统以探知外界情况(荆显英等,1981)。通常认为,在声发射过程中,齿鲸类饱含油分的额隆组织起着声透镜的作用。额隆的这种特殊生理机能,与其所含脂质的脂肪酸组成密切相关。1980年陆佩洪等报道了白鱀豚额隆油的酸价、碘价、皂化价、不皂化物及甘油三酯(比色法)的含量。有关白鱀豚额隆油的脂肪酸组成,迄今尚未研究。目前我们才开始进行该项工作。

Abstract: The purpose of the present study is to analyze the fatty acid component of the melon of the Baiji, Lipotes vexillifer.The oil has beene xamined for lipid class composition by TLC and CC.Two major lipid classes, wax esters and triglycerides, are present.The wax esters of the oil has been isolated by preparative plates, and established by infrared spectroscopy technique. The pure wax esters was used as a reference standard.The fatty acid component of sample oil has been analyzed by GLC and GLC-MS. Twenty-six fatty acids with chain lengths from 8 to 18 carbon atoms have been identified. The oil does not contain isovaleric acid but contains high levels of C12 and C14 fatty acids. Thus it seems likely that these fatty acids are essential to echolocation of the Lipotes vexillifer.The fatty acids of the melon oil of Plaianista gangetica and Inia geo-ffrensis have been compared.