莲藕中黄酮含量与分布研究

Study on the Distribution and Contents of Flavone in Lotus

以鄂莲系列莲为材料,对不同品种莲的黄酮含量分布进行了研究。结果表明,同株莲中不同部位的黄酮含量有较大差异,不同部位的黄酮含量排序为荷叶>荷花>荷梗>地下茎,其中荷叶中黄酮的含量明显高于其他部位。荷叶中黄酮含量是荷梗中含量的5～8倍,是地下茎含量的40～50倍。另一方面,品种不同,荷叶的黄酮含量差异不显著,但黄酮含量与叶片的大小显著相关。不同叶片中黄酮含量以中叶最多,小叶最少。另一方面,黄酮含量与莲的品种和荷梗大小不显著相关。同一地下茎中不同部位黄酮含量有差异,藕节中黄酮的含量明显高于其他部位,其不同部位的黄酮含量排序为藕节>藕尾>藕中>藕头。

The distribution of flavone in lotus from Hubei was studied.The results showed that the contents in different parts of lotus were varied,and the obvious higher flavone in leaf was observed,which was 5~8 times higher than that in the stem and 40~50 times than that in root.The order of flavone contents in various parts was as follows：leafflowerstem root.On the other hand,no obvious different flavone content in various lotus leaves was found,but the content in leaf was closely related with the size of leaf.The highest and lowest flavone contents in middling and small leaves were found.There was no significant correlation between flavone content and size of lotus stem,varieties of lotus.In a lotus stem,the flavone in the joint was higher than other parts,and the order in stem was as follows：jointtail partmiddle parthead part.