Polyphenol

Biology

Chromatography

Biochemistry

Botany

Antioxidant capacity

Food science

Trolox

Antioxidant

Ellagic acid

Ferulic acid

Medicine

Chemistry

Linum

Ascorbic acid

DPPH

ABTS

Traditional medicine

Ferric reducing ability of plasma

Records of Natural Products

Flaxseed (Linum usitatissimum L.) is important source of oil and protein for industrial, pharmaceutical, and nutritional applications.In order to estimate the effects of lyophilized aqueous extract of flaxseed shell (AEF) and evaporated ethanolic extract of flaxseed shell (EEF), we studied their DPPH, ABTS, DMPD and O 2•-scavenging effects.Total antioxidant activity by ferric thiocyanate method, Fe 3+ , Cu 2+ and [Fe 3+ -(TPTZ) 2 ] 3+ reducing ability, and Fe 2+ chelating activity.Also, α-tocopherol, BHA, trolox, and BHT were used as positive controls.The results clearly AEF and EEF demonstrated effective antioxidant activity.The quantity of p-hydroxybenzoic, vanillin, p-coumaric acid, ascorbic acid, ferulic acid, and ellagic acid were investigated by LC-MS/MS.The present study will introduce a novelty for further studies on the antioxidant effects of AEF and EEF.

Antioxidant Activity of Flaxseed (Linum usitatissimum L.) shell and Analysis of Its Polyphenol Contents by LC-MS/MS