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Nat Prod Res. 2008 Jun 15;22(9):735-46. doi: 10.1080/14786410601132360.

Assessing the antioxidative properties and chemical composition of Linaria vulgaris infusion.

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Faculty of Pharmacy, Department of Pharmacognosy, Charles University, Hradec Králové, Czech Republic.


The ability of Linaria vulgaris (Scrophulariaceae) infusion to act as a scavenger of 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical, reactive oxygen species (superoxide radical, hydroxyl radical, hypochlorous acid (HOCl)) and nitric oxide was investigated. The obtained data indicate that the infusion has a good scavenging activity against superoxide radical and is a very potent nitric oxide and DPPH scavenger. In hydroxyl radical assay a pro-oxidant capacity was noticed, especially for concentrations higher than 31.25 microg mL(-1). No effect was found against HOCl. A phytochemical study of this extract was also performed. The HPLC/UV analysis allowed the identification and quantification of eight organic acids (oxalic, aconitic, citric, ketoglutaric, ascorbic, malic, shikimic and fumaric acids). The phenolic composition of the lyophilised infusion was also determined by HPLC/DAD and four compounds were quantified, but, despite its high content, only linarin was managed to be identified.

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