【摘要】：建立拐棗中齊墩果酸的含量測定方法。采用紫外分光光度法,對顯色劑用量,穩(wěn)定劑用量,水浴顯色時間,穩(wěn)定時間等因素分析最佳測定方法。結果表明:齊敦果酸提取的最佳試劑為75%的乙醇,以0.4 mL 50 g/L香草醛-冰醋酸為顯色劑,0.8 mL高氯酸為穩(wěn)定劑,70℃水浴反應25 min,在540 nm下測定吸光度得到齊墩果酸含量為4.72%,此方法為最佳測定方法。
[Abstract]:A method for the determination of oleanolic acid in Jujube was established. UV spectrophotometry was used to analyze the optimum determination method for the factors such as the amount of chromogenic agent, the amount of stabilizer, the time of color development in water bath and the time of stabilization. The results showed that the best reagent for extraction of zidonic acid was 75% ethanol, 0.4 mL 50 g / L vanillin aldehyde glacial acetic acid as chromogenic agent, 0.8 mL perchloric acid as stabilizer, and 70 鈩，

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