Study of antioxidant potential and phenolic compounds of ten medicinal plants from Beiza region in Fars Province

محسن زاده, ساسان and کاظمی کرانی, ماه خاور Study of antioxidant potential and phenolic compounds of ten medicinal plants from Beiza region in Fars Province. In: 2nd International and 6th National Iranian Congress on Organic vs. Conventional Agriculture, August 2019, Ardabil, Iran.

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Abstract

Antioxidants are substances that prevent free radical formation in cells. These protect cells against the harmful effects of free radicals. In the present study, antioxidant potential and phenolic compounds of ten medicinal plants of Bayza area in Fars province were studied. Antioxidant potential was evaluated by DPP method and the amount of phenolic compounds was evaluated by Folin method. After drying, the plants were powdered by electric milling to increase their contact area with the solvent for better extraction. Weighed one gram of the powder and added 30 mL of methanol and stirred for 2 to 3 hours with Shaker. The extract was filtered using Whitman paper and different concentrations of the extract were prepared to investigate the antioxidant potential. The highest antioxidant potential was observed in the leaves of Mongoose and Jasmine, and the lowest in the fruit of the puppet. Regarding the amount of phenolic compounds, the highest and the lowest amounts were observed in mackerel, respectively. There was a significant correlation between the antioxidant potential and the amount of phenolic compounds. The correlation coefficient diagram shows a very good correlation between the two methods mentioned for the plants in question, indicating that plants with higher content of phenolic compounds have higher radical reduction activity and lower IC50. This is where polyphenolic compounds have a direct effect on the antioxidant activity of plants.

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