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Antioxidant Activity and Chemical Composition of Juniperus Excelsa Ssp. Polycarpos Wood Extracts

Antioxidant Activity and Chemical Composition of Juniperus Excelsa Ssp. Polycarpos Wood Extracts

S K Hosseinihashemi, A Dadpour, A Lashgari

Nat Prod Res. 2017 Mar;31(6):681-685.

PMID: 27417447

Abstract:

Extracts from the wood of Juniperus excelsa ssp. polycarpos were analysed for their antioxidant activity using the DPPH method and compared with ascorbic acid and butylated hydroxytoluene. The most active extracts were analysed for their chemical composition using gas chromatography-mass spectrometry. Acetone extract was found to be moderately active as an antioxidant agent at 58.38%, which was lower than the value of vitamin C (98.56%) at the concentration of 14.20 mg/mL. The major components identified in the acetone extract as trimethylsilyl (TMS) derivatives were pimaric acid TMS (24.56%), followed by α-d-glucopyranoside,1,3,4,6-tetrakis-O-(TMS)-β-d-fructofuranosyl 2,3,4,6-tetrakis-O-(TMS) (21.39%), triflouromethyl-bis-(TMS)methyl ketone (9.32%), and cedrol (0.72%). The dissolved water:methanol (1:1 v/v) partitioned from acetone extract afforded 12 fractions; among them, the F9 fraction was found to have good antioxidant activity (88.49%) at the concentration of 14.20 mg/mL. The major compounds identified in F9 fraction were α-d-glucopyranoside, 1,3,4,6-tetrakis-O-(TMS) (20.22%) and trifluoromethyl-bis-(TMS)methyl ketone (5.10%).

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP32388559	Methyl cedryl ketone		32388-55-9	Price

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