Affiliation:
1. National University of Pharmacy , Kharkiv , Ukraine
Abstract
Summary
Introduction: There is a high interest in creating medicines, dietary supplements, cosmetics including plant extract with antioxidant activity. For understanding whether plant extract has a maximum level of antioxidant activity it is important to know the total antioxidant activity of raw material.
Objective: The main goal of study was to find out the green tea leaves total antioxidant activity.
Methods: The antioxidant activity was measured by potentiometric method. Total phenolic, flavonoids, catechins and hydrocinnamic acids derivatives were quantified using Folin-Ciocalteu, aluminium chloride, vanillin and sodium molibdate methods, respectively.
Results: The green tea leaves total antioxidant activity was 660.75 mmol-eqv./mres. dry weight. A significant correlation was observed between the amount of phytochemicals and antioxidant activity, which indicated its main role in antioxidant activity.
Conclusion: The research showed that the green rea leaves possess a high value of antioxidant activity and it is a good source of phenolic constituents.
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