庆阳红富士苹果中多酚类成分组成及含量分析

为分析庆阳各县区8个示范果园的红富士苹果中多酚组成。采用微波-超声-纤维素酶辅助法提取苹果中多酚,福林酚比色法和高效液相色谱法(High performance liquid chromatography,HPLC)测定总酚组成及含量。结果表明,各鲜果中总酚含量为0.723~1.088 mg/g,主要包括绿原酸、对香豆酸、儿茶素、表儿茶素、芦丁、根皮苷这6种多酚,其中绿原酸、对香豆酸和芦丁含量较高,分别为0.106~0.154、0.157~0.256和0.002~0.078 mg/g。庆阳苹果多酚组分多且含量高,营养丰富,食用和药用价值良好。

Analysis of Compostion and Content of Polyphenols in Qingyang Red Fuji Apple

To analyze the polyphenol composition of red Fuji apple in eight demonstrative orchard of Qingyang county. The polyphenols of apple were extracted by microwave-ultrasonic-cellulose assisted method, the composition and content of total phenol were determined by Flin-Ciocalteu and HPLC.The results showed that the total phenol content of fresh apples was 0.723~1.088 mg/g, which mainly included six kinds of polyphenols, such as chlorogenic acid, p-coumaric acid, catechin, epicatechin, rutin and phloridzin.Among them, chlorogenic acid, p-coumaric acid and rutin were relatively higher, which were 0.106~0.154, 0.157~0.256 and 0.002~0.078 mg/g respectively.The polyphenols from Qingyang apple had a high content of polyphenols, rich nutrition and good edible and medicinal value.