Objective

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The aim of this study was to research the relationship between HPLC fingerprint and anti-inflammatory effect of Zhideke granules， and the substance basis of its anti-inflammatory effect was preliminary explored.

Method

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The fingerprint of 10 batches of Zhideke granules were determined by HPLC， the mobile phase was consisted of methanol-0.2% phosphoric acid solution for gradient elution with a detection wavelength of 254 nm. Similarity analysis， hierarchical cluster analysis （HCA）， principal component analysis （PCA） and orthogonal partial least squares-discriminant analysis （OPLS-DA） were used to evaluate the quality difference between batches of Zhideke granules. The correlation analysis between the common peaks and the inhibition rates of Zhideke granules on ear swelling and cotton ball granuloma in mice was carried out by partial least squares （PLS）， and the peaks greatly contributing to the anti-inflammatory effect were screened out.

Result

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There were 31 common peaks in the HPLC fingerprint of Zhideke granules. The similarities of 10 batches samples were ≥0.992. The HCA and PCA analysis results were consistent， and the samples were divided into 3 categories. Combined with the OPLS-DA results， 15 components were the main markers affecting the differences of different batches of samples. Different batches of Zhideke granules differed in anti-inflammatory effect. The chromatographic peaks being positively correlated with the anti-inflammatory effect were mainly from Belamcandae Rhizoma and Scutellariae Radix， Chromatographic peaks 3， 6， 19， 27-30 had significant contribution to anti-inflammatory effect， of which peaks 28 and 30 were irisflorentin and wogonin.

Conclusion

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HPLC fingerprint combined with chemical pattern recognition method can provide a reference for systematic evaluation of the overall quality of Zhideke granules. Zhideke granules has a certain inhibitory effect on acute and chronic inflammation in mice， and the anti-inflammatory effect is the result of the combined action of various ingredients， while Belamcandae Rhizoma and Scutellariae Radix have significant significance for the anti-inflammatory effect.