PHYTOCHEMICALS SCREENING AND ANTIOXIDANT ACTIVITY OF PSIDIUM GUAJAVA( GUAVA ) LEAVES EXTRACT

Student: Ammar Ibrahim Abdullahi
Supervisor: Mr Mansur Ibrahim Sulaiman
HOD: Dr Sulaiman Madobi Sulaiman
Department of Pharmaceutical Technology
Pharmaceutical Sciences
Kano State Polytechnic, Kano, Kano State

Abstract

This study investigated the phytochemical screening and antioxidant activity of Psidium guajava (guava) leaves extracts. The aim of the research was to identify the major phytochemical constituents present in the leaves and to evaluate their antioxidant potential. Fresh leaves of Psidium guajava were collected, washed, dried, and pulverized into powder. The powdered sample was extracted using suitable solvents. Standard qualitative methods were employed to screen for the presence of phytochemicals such as alkaloids, flavonoids, tannins, saponins, glycosides, and phenolic compounds. The antioxidant activity of the extracts was determined using appropriate in-vitro assays. The results revealed the presence of important bioactive compounds, especially flavonoids, tannins, and phenolics, which are known for their antioxidant properties. The extracts demonstrated significant antioxidant activity, indicating their ability to scavenge free radicals. The findings of this study support the traditional use of Psidium guajava leaves in herbal medicine and suggest that the plant is a good natural source of antioxidants. Further studies are recommended to isolate and characterize the active compounds and to evaluate their pharmacological potentials.

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