马占相思树皮制取栲胶试验

Experiment on Extraction of Vegetable Tannin from Bark of Acacica mangium

对广西高峰林场引种的 8年生马占相思 ( Acacica mangium)树皮进行定性和定量分析 ,模拟栲胶生产小试。结果表明 :该树皮所含单宁属缩合类单宁 ,绝干树皮含单宁高达36.75% ,单宁 /非单宁为 6.10 ,约 2 .34 t气干树皮可生产 1t栲胶。制得的栲胶不仅单宁含量高 ,颜色浅 ,而且鞣革渗透速度快 ,富有弹性 ,皮质好 ,说明马占相思树皮是一种优良的栲胶原料。

The qualitative and quantitative analyses were conducted on the bark of the eight-year old individuals of Acacica mangium growing at Guangxi Gaofeng Forest Farm. The experimental production of vegetable tannin was extracted in small scale. The tannin in the bark is a kind of the condensed tannins. The absolutely dried bark contains up to 36.75% of tannin, with 6.10 of ratio of tannin to non-tannin. About 2.34 tons of the air dried bark could produce one ton vegetable tannin.The production has a high tannin content with a quality of light color, quick permeation, tan leather and springy. It is revealed that the bark of Acacica mangium is an excellent raw material of vegetable tannin extraction.