Ultra-performance liquid chromatography of amino acids for the quality assessment of pearl powder.


Pearls have been widely used as a traditional medicine, in cosmetics, and as a health food supplement in China since ancient times. However, the identification and quality assessment of pearl powder have been challenging tasks because of the similar morphological features and chemical composition of its common adulterants, especially conch powders. In this… (More)
DOI: 10.1002/jssc.201401147


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