1-1-diphenyl-2-picrylhydrazyl and 2-3-pentanedione

The composition and in vitro antioxidant activities of the essential oil and methanol extract of the aerial parts of Viola tianshanica were evaluated in this research. GC-MS analysis of the essential oil resulted in the identification of 15 constituents, representing 89.67% of the oil. The major compounds detected in the essential oil were dibutyl phthalate (15.19%), hexadecanoate methyl (8.65%), n-hexadecanoic acid (3.07%) and 2,3-pentanedione (2.62%). Essential oil and methanol extract were tested for their antioxidant activities using 1,1-diphenyl-2-picryl-hydrazyl free radical scavenging and β-carotene linoleic acid assay. In addition, the total phenol of essential oil, polar subfraction and non-polar subfraction were determined.

Topics: Antioxidants; beta Carotene; Biphenyl Compounds; China; Dibutyl Phthalate; Free Radical Scavengers; Gas Chromatography-Mass Spectrometry; In Vitro Techniques; Methanol; Oils, Volatile; Palmitates; Pentanones; Phenols; Picrates; Plant Extracts; Viola