【摘要】 叶绿素－胡萝卜素中酸性物质主要由脂肪酸和树脂酸组成，其中树脂酸占６０％～７５％，脂肪酸占２０％～３０％。酸性物质中各组成的含量与树种有关。分析鉴定表明，马尾松叶绿素－胡萝卜素软膏中含酸性物质２８．０％（占软膏重），从该酸中分离出３１个色谱峰，鉴定出２５个化合物，其中主要成分为海松酸（１０．９６％）、去氢机酸（１９．０６％）和油酸（８．２９％）等，鉴定出的组分占总酸量的９１．５７％；赤松叶绿素－胡萝卜素软膏中含酸性物质２２．８％（占软膏重），从该酸中分离出３１个色谱峰，鉴定出２５个化合物，其中主要成分为山达海松酸（２９．７５％）和去氢枞酸（２３．５０％）等，鉴定出的组分占总酸量的９８．２０％；樟子松叶绿素－胡萝卜素软膏中含酸性物质２６．４％（占软膏重），从该酸中分离出３１个色谱峰，鉴定出２５个化合物，其中主要成分为松叶酸（３６．０１％）、油酸（１５．６６％）和去氢枞酸（１４．８０％）等，鉴定出的组分占总酸量的９８．３０％。更多还原

【Abstract】 The acidic fraction in chlorophyll-carotene paste from needles and twigs of some coniferous trees consists of fatty acids and resin acids which account for 20%～30%and 60%～75%of the total acids ,respectively. The content of each acidic fraction in the paste is dependent on tree species. Results of analysis show that the acidic fraction accounts for 28.0% of the paste from Pinus massoniana,25 of the 31 components sepa-rated were identified, which make up 91.57% of the total acids with pimaric acid(10.96%),dehydroabietic acid (19.06%)and oleic acid (8.29%)etc. as main compo-nents. Acidic fraction accounts for 22.8% of the paste from P. densiflora. 25 of the 31 components separated were identified, making up 98.20%of the total acids with san-daracopimaric acid(29.72%)and dehydroabietic acid(23.50%)etc. as main compo-nents. Acidic fraction accounts for 26.4%of the paste from P. sylvestris var.mongolica. 25 of the 31 components separated are identified,which make up 98.30%of the total acids in which pinifolic acid(36.01%),oleic acid(15.66%)and dehydroabietic acid(14.8%)are dominating.更多还原