中国野生葡萄种子及果皮单宁的研究

利用 Folin- Dianies法测定了中国野生葡萄 7个种 34个株系的种子和果皮单宁含量。结果表明 ,供试野生材料种子单宁含量为 30～ 5 0 m g/g,其中复叶葡萄含量最高 (平均为 48.5 m g/g) ,刺葡萄最低 (平均为 31.5mg/g) ;果皮单宁含量大多小于种子单宁含量 ,其中秋葡萄果皮单宁含量最高 (平均为 78.0 mg/g) ,刺葡萄最低 (平均为 16 .4m g/g)。结果表明 ,葡萄种内株系间种子单宁含量差异性大 ,而种间果皮单宁含量的差异性大。

The tannin contents of the seed and the berry skin in Chinese wild Vitis

By Folin-Dianies,the tannin contents of the seed and of the berry skin were determined with 34 clones of 7 Chinese wild vitis.The result showed that the seed tannin contents were between 30.0 mg/g and 50.0 mg/g in Chinese wild vitis species,and those in V.piaseckii were the highest (48.5 mg/g average),those in V.davidii were the lowest (31.5 mg/g average).The tannin contents of the skin were lower than those of the seed.Of all wild materials,the skin tannin contents in V.romanetii were the highest(28.0 mg/g average),and those in V.davidii were the lowest (16.4 mg/g averge).The seed tannin content differences among the clones in the same species were significant,and the skin tannin content differences were significant among the species.