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    Extraction, Enrichment, and Quantification of Main Antioxidant Aglycones of Flavonoids2020-04-02

    Extraction, Enrichment, and Quantification of Main AntioxidantAglycones of Flavonoids
    and Tannins from Melastoma Dodecandrum Lour.: Guided by UPLC-ESI-MS/MS


    2.2. Chemicals. /e reference substances including p-coumaric acid, gallic acid, 
    ellagic acid, apigenin, naringenin, luteolin, kaempferol, quercetin, vitexin, and
     isovitexin were obtained from Chengdu Alfa Biotechnology Co., Ltd.
    (Chengdu, China). /eir purity was all greater than 98% (w/
    w).
    Trolox and 1,1-diphenyl-2-picrylhydrazyl radical 2,2-
    diphenyl-1-(2,4,6-trinitrophenyl) hydrazyl (DPPH), 2.2′-
    azino-bis(3-ethylbenzenothiazoline6-sulfonic acid) (ABST),
    and 2,4,6-tripyridyl-s-triazine (TPTZ)


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    Technische Unterstützung:库价化学(KuuJia)
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