粤北山区五种特色水果果皮中果胶含量的测定

Determination of Pectin Content in the Peel of Five Kinds of Characteristic Fruits in the Mountainous Area of Northern Guangdong

以粤北山区5种常见的特色水果果皮为原料,采用超声波辅助酸法提取果胶,并对各种水果果皮的果胶含量对比研究。结果表明,柑橘、柚子、大蕉、火龙果、百香果5种水果鲜果皮中果胶的含量分别为16.5257,24.5517,17.4486,24.7625,26.9092 mg/g。5种水果在天然果胶制备中均有一定价值,其中以百香果果皮为最适原料。

Pectin was extracted from the peel of five kinds of common characteristic fruits in the mountainous area of northern Guangdong Province by ultrasonic assisted acid extraction method.The results showed that the contents of pectin in orange peel,grapefruit peel,banana peel,pitaya peel and thyme peel were 16.5257,24.5517,17.4486,24.7625,26.9092 mg/g respectively.Five kinds of fruits had certain value in the preparation of natural pectin,among which the pericarp of passion fruit was the most suitable raw material.