菏泽不同产地牡丹叶营养成分分析与评价

Analysis and Evaluation of Nutritional Components of Paeonia suffruticosa Andr.Leaves from Different Regions in Heze

采用凯氏定氮法、索氏抽提法、原子吸收光谱法等对菏泽三个不同产地牡丹叶基本营养及活性成分、氨基酸、矿物质的种类和含量进行测定及营养评价,为其进一步研究及开发利用奠定基础。结果表明:郓城牡丹叶的蛋白质、必需氨基酸、药用氨基酸含量最高,分别为21.9%、8.01 g/100 g、12.61 g/100 g,其必需氨基酸指数(Essential amino acid index,EAAI)为0.79,为可用蛋白源;成武牡丹叶总脂肪酸含量最高为0.4400%;曹县牡丹叶维生素C和钙含量最高,分别为54.8 mg/100 g和1.51 g/100 g。牡丹叶中人体必需的营养成分含量丰富、构成合理,不同产地牡丹叶营养及活性成分呈现出一定差异性,可根据开发产品的需求选择原料产地。

Kjeldahl method,Soxhlet extraction method and atomic absorption spectrometry were used to determine essential nutrients and active ingredients,amino acids and minerals in the leaves of Paeonia suffruticosa Andr.from three different regions in Heze.The results showed that the protein,essential amino acid and medicinal amino acid contents of leaves of Paeonia suffruticosa Andr.from Yuncheng were the highest,which were 21.9%,8.01 g/100 g and 12.61 g/100 g,respectively.The essential amino acid index(EAAI)of leaves of Paeonia suffruticosa Andr.from Yuncheng was 0.79,which was the available protein source.Leaves of Paeonia suffruticosa Andr.from Chengwu contained the highest contents of total fatty acid,which was 0.4400%.Leaves of Paeonia suffruticosa Andr.from Caoxian had the highest vitamin C and calcium contents,which were 54.8 mg/100 g and 1.51 g/100 g,respectively.As a consequence,leaves of Paeonia suffruticosa Andr.were rich in essential nutrients and reasonable in composition.The nutritional and active components of leaves of Paeonia suffruticosa Andr.from three different regions were distinct,thus the region of materials should be selected according to the demand of development products.