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. 2011 Apr 14;16(4):3152-67.
doi: 10.3390/molecules16043152.

Antioxidant activities of Melittis melissophyllum L. (Lamiaceae)

Affiliations

Antioxidant activities of Melittis melissophyllum L. (Lamiaceae)

Biljana Kaurinovic et al. Molecules. .

Abstract

Extracts of Melittis melissophyllum leaves in ether, chloroform, ethyl acetate, n-butanol and water were evaporated to dryness and dissolved in 50% ethanol to make 10% (w/v) solutions. The potential protective action of the extracts was assessed by the corresponding in vitro and in vivo tests. In the in vitro experiments extracts were tested as potential scavengers of free radicals (DPPH, O₂·⁻, NO, and OH radicals), as well as inhibitors of liposomal peroxidation (LPx). The results obtained show that all extracts (exept n-BuOH extract) are good scavengers of radicals and reduce LPx intensity in liposomes, which points to their protective (antioxidant) activity. In vivo experiments were concerned with antioxidant systems (activities of GSHPx, GSHR, Px, CAT, XOD, GSH content and intensity of LPx) in liver homogenate and blood-hemolysate of experimental animals after their treatment with extracts of M. melissophyllum leaves, or in combination with CCl₄. On the basis of the results obtained it can be concluded that the examined extracts have protective (antioxidative) effect and this antioxidative behaviour is more pronounced in liver than in blood-hemolysate. The reason is probably the fact that liver contains other enzymatic systems, which can also participate in the antioxidative mechanism. Of all the extracts the H₂O one showed the highest protective activity.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Inhibition of degradation of 2-deoxyribose by different extracts of M. melissophyllum in the deoxyribose assay.
Figure 2
Figure 2
Inhibition of LP in Fe2+/ascorbate system of induction by different extracts of M. melissophyllum in the TBA assay.

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