三氯化铝与黄酮类化合物作用后,生成黄酮的络合物为黄色,以芦丁为标准品,使用分光光度法测定总黄酮的含量,用50%乙醇分别对榅桲籽和香梨籽中黄酮类成分进行分离及测定实验,实验结果表明,榅桲籽与香梨籽中的总黄酮含量分别为4.96%,1.38%。 After trichloroaluminum reacted with flavonoids, the complex of flavonoids formed was yellow. Rutin was used as a standard. The content of total flavonoids was determined by spectrophotometry, and 50% ethanol was used separately for loquat seeds and fragrant pear seeds. Flavonoids were separated and assayed. The experimental results showed that the total flavonoids content in loquat seeds and fragrant pear seeds were 4.96% and 1.38%, respectively.