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  • Title: [HPLC determination of oleanolic acid and llrolic acid in Chinese medicinal herbs].
    Author: Xie Y, Hang TJ, Cheng Z, Zhang ZX, An DK.
    Journal: Zhongguo Zhong Yao Za Zhi; 2001 Sep; 26(9):615-6. PubMed ID: 12776430.
    Abstract:
    OBJECTIVE: To develop a new method for simultaneous determination of oleanolic acid and llrolic acid in Chinese medicinal herbs at the same time. METHOD: HPLC was carried out on a Shim-pack CLC-ODS column using MeOH-H2O-HOAc-TEA (83:17:0.04:0.02). RESULT AND CONCLUSION: The average recovery of oleanolic acid and llrolic acid was 103.3 +/- 2.07% and 102.7% +/- 0.65% respectively.
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