Determination of ursolic acid of Liuwei Dihuangwan simulation samples by NIR / 中国中药杂志

ABSTRACT

<p><b>OBJECTIVE</b>Determine the content of ursolic acid of Liuwei Dihuangwan.</p><p><b>METHOD</b>Using NIR with PLS, PCA-BPANN and WT-BPANN.</p><p><b>RESULT</b>The predication recovery were 100.7%, 100.6%, 100.1%, and the RSD were 5.42%, 6.49%, 6.52% respectively.</p><p><b>CONCLUSION</b>NIR can be used in the determination of ursolic acid, which set up the foundation of on-line control of traditional Chinese medicine.</p>