Chromatography and spectroscopy techniques are the most commonly used methods in standardization of herbal medicines but the herbal system is not easy to analyze because of their complexity of chemical composition.Many cutting-edge analytical technologies have been introduced to evaluate the quality of medicinal plants and significant amount of measurement data has been produced.Chemometric techniques provide a good opportunity for mining more useful chemical information from the original data.Then,the application of chemometrics in the field of medicinal plants is spontaneous and necessary.Comprehensive methods and hyphenated techniques associated with chemometrics used for extracting useful information and supplying various methods of data processing are now more and more widely used in medicinal plants,among which chemometrics resolution methods and principal component analysis(PCA)are most commonly used techniques.This review focuses on the recent various important analytical techniques,important chemometrics tools and interpretation of results by PCA.and applications of chemometrics in quality evaluation of medicinal plants in the authenticity,efficacy and consistency.
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