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  • Title: Establishment of Detection Methods for Five Cannabinoids in Hemp Cosmetics Based on HPLC.
    Author: Sun DM, Song L, Wang HY, Yu CC, Chu Q, Lan T, Zhang WB.
    Journal: Anal Sci; 2021 Dec 10; 37(12):1821-1824. PubMed ID: 34148924.
    Abstract:
    A simultaneously HPLC detection method for cannabidiolic acid (CBDA), cannabidiol (CBD), cannabinol (CBN), Δ9-tetrahydrocannabinol (THC), tetrahydro-cannabinolic acid (THCA) in 3 kinds of cosmetics matrix containing hemp leaf extract was developed. The extraction and HPLC conditions were optimized, and a methodological verification was also carried out. The results showed that this method had a good linear relationship in the range of 0.25 - 50 μg/mL with LOD values for 5 cannabinoids all between 0.10 - 0.25 μg/g. The recovery rates of 5 cannabinoids in 3 different cosmetics matrixes were between 90.1 - 108.5%, and the RSD values were all below 4.4%. These results indicated that this method had the advantages of simple operation, high sensitivity, and good accuracy. Through the testing of 6 kinds of hemp cosmetics, it was found that such cosmetics had uneven quality. The establishment of this method can lay a methodological foundation for establishing relevant testing method standards.
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