酸模、委陵菜、苋菜3种植物叶片粗蛋白含量的测定与比较分析

以内蒙古海拉尔东山的蓼科植物酸模、蔷薇科植物委陵菜、苋科植物苋菜的风干样作为试验材料,运用凯氏定氮法对3种植物叶片中的粗蛋白含量进行了测定与比较分析。分析结果表明,3种植物叶片的粗蛋白含量分别为0.80%、1.79%和1.18%,其中委陵菜叶片的粗蛋白含量最高,且与酸模和苋菜叶片的粗蛋白含量存在显著差异（P〈0.05）,而酸模与苋菜叶片的粗蛋白含量差异不显著（P〉0.05）。结果提示,委陵菜更具有被开发为新的饲料蛋白来源的潜力。

The Determination and Comparative Analysis of Leaf Crude Protein Content of Rumex acetosa,Potentilla chinensis and Amaranthus mangostanus

The crude protein content of the air-dried leaves samples of Rumex acetosa, PotentiUa chinensis and Amaranthus mangostanus collected from Dongshan of Hailar were determined by Miero-Kjeldahl method and were statistically analyzed. The results showed that the crude protein content of leaves of Rumex acetosa, PotentiUa chinensis and A maranthus mangostanus were 0.80%, 1.79% and 1.18% ,respectively. While the crude protein content of the Potentilla chinensis leaves was significantly higher than that of the Rumex acetosa and A maranthus mangostanus leaves （P〈0.05）, no significant difference was observed between the Rumex acetosa and Amaranthus mangostanus leaves （P〉0.05）. It is indicated that the Potentilla chinensis leaves have a better prospect for developing as a new source of feedstuff protein.