油松不同部位多酚与单宁的含量比较研究

油松为我国特有树种，药用历史悠久且分布广泛，其药用部位含有多酚和单宁等生物活性物质。本文采用Folin-Cicalten法和柠檬酸铁铵法对油松不同部位多酚与单宁含量进行了测定。实验结果表明，油松根、茎和叶多酚含量依次为89.24±12.06、68.18±11.20、104.30±12.51 mg·g^-1；单宁含量依次为25.38±5.85、20.92±3.55、39.02±5.68 mg·g^-1。油松多酚与单宁在油松各部位有相同的分布趋势，均为叶中最高，根次之，茎中最低。与其他中草药植物多酚含量相比，油松多酚含量较高，具有较大的开发前景和应用价值。

Comparison of the Contents of Total Polyphenols and Tannins in Different Parts of Pinus sinensis

Pinus sinensis is a widely distributed Chinese endemic species, with a long application history in Chinese herbal medicine. Polyphenols and tannins are important medicinal components in pines. In this paper, Folin-Cicalten method and the Chinese national standard determination method of tannins were adopted to determine the total polyphenols and tannins contents in root, stem and leaf of P.sinensis. The total contents of polyphenols in root, stem and leaf of pine was 89.24±12.06, 68.18±11.20 and 104.30±12.51 mg·g^-1, respectively, and tannin contents were 25.38±5.85, 20.92±3.55 and 39.02±5.68 mg·g^-1, respectively. The results showed leaf contained the highest content of total polyphenols, while stem the lowest. Compared with other medicinal plants, the relatively high contents of total polyphenols and tannins make P.sinensis a promising treasure in development and application.