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  • Title: [Determination of ursolic acid of Liuwei Dihuangwan simulation samples by NIR].
    Author: Song LL, Fan BY, Xu XJ, Lu PW, Xiang BR.
    Journal: Zhongguo Zhong Yao Za Zhi; 2006 Oct; 31(19):1590-3. PubMed ID: 17165581.
    Abstract:
    OBJECTIVE: Determine the content of ursolic acid of Liuwei Dihuangwan. METHOD: Using NIR with PLS, PCA-BPANN and WT-BPANN. RESULT: The predication recovery were 100.7%, 100.6%, 100.1%, and the RSD were 5.42%, 6.49%, 6.52% respectively. CONCLUSION: NIR can be used in the determination of ursolic acid, which set up the foundation of on-line control of traditional Chinese medicine.
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