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Anxiolytic-like effect of Aronia melanocarpa fruit juice in rats.

The main biologically active constituents of Aronia melanocarpa fruit juice (AMFJ) are polyphenolics, amongst them flavonoids, mainly anthocyanins. The aim of the present study was to investigate the effects of AMFJ (5 and 10 mL/kg) on anxiety using the social interaction test, on locomotor activity in the open field test and on working memory in the object recognition test in rats. AMFJ showed an anxiolytic-like effect which was demonstrated by a dose-dependent increase in the time of active social contacts between the test partners. The effects of both AMFJ doses were comparable to the effect of diazepam (1 mg/kg). AMFJ neither changed significantly horizontal and vertical locomotor activity, nor did it adversely affect working memory.