RESUMO
Objective: To establish a method for the quality control of Deng's Herbal Tea Granula. Methods: An HPLC method was developed to establish the fingerprint of Deng's Herbal Tea Granula methanol extract and 11 samples from various batches were analyzed. Furthermore, principal component analysis (PCA) was used to investigate pattern recognition. Results: The similarity among 11 batches of samples was no less than 0.95. The PCA showed that 16 common peaks were integrated into three principal components and their accumulation contributing rate amounted to 91.89%. The relative peak area of isochlorogenic acid B was the most effective index in fingerprint of Deng's Herbal Tea Granula. Conclusion: This method is available for the quality evaluation and quality control of Deng's Herbal Tea Granula.