Dr. M. V. Dass Prakash
Assistant Professor, Department of Biochemistry,
Sri Sankara Arts and Science College, Kanchipuram,Tamil Nadu, India
Title of presentation: Comparative Study on Phytochemical Composition and Antioxidant Activity of Natural and Hybrid Variety of Papaya Leaves
Tropical fruit papaya is consumed as dessert fruit or processed into value added products. Their peels and seeds which contain abundant beneficial phytochemicals are often discarded or underutilized. Phytochemicals from numerous seeds extracts and their antibacterial activities have been reported. These activities have been attributed to flavonoids andphenolics. The antibacterial activities reported for the above extracts were from several different solvent extracts. Complete extraction of these phytochemicals by a single solvent may not be possible due to their chemical complexity, different distribution patternthroughout the plant and also due to the selectivity of the solvents themselves. The constituent of the extract of C. papaya (dried) leaves contain compounds and micronutrients which may be responsible for its observed antioxidant activity. This study suggests that the plant possesses antioxidant activities which can counteract the oxidative damage. The total phenol test provides information on the reactivity of the plant extract with a stable free radical. It gives a strong absorption band. The degree of reduction in absorbance measurement is indicative of the radical scavenging (antioxidant) power of the extract. The crude extract of Carica papaya appeared to be as potent as Gallic Acid with maximum inhibition. This study has shown the phytochemicals and minerals composition of natural and hybrid Carica papaya leaves. This partly shows the use of this plant in herbal medicine, as a rich source of phytochemicals, coupled with the presence of the essential vitamins and minerals. Carica papaya leaves can be seen as a potential source of useful food and drug items. The presence of alkaloids in them explains the reason why it is being effectively used as an anti-malaria, anti-dengue agent. However, further studies are needed to obtain purified compounds that may be responsible for the activities observed from the tested leaves.
Keywords: Papaya, Phytochemical, Antioxidant, Antibacterial activity
Dr M.V. Dass Prakash presently working in Sri Sankara Arts & Science College got Ph.D. degree in the field of Cancer Genetics, Department of Biomedical Sciences, Bharathidasan University. He presented his research findings in various seminars, conference and several publications (10 research article) and a book. He also actively participating several academic and administrative committees.