Antioxidant Properties of Leaf & Bark Crude Extracts Of Gnetum Gnemon L. (Gnetaceae)


Dayana W., Radzali M., Johari R., Maziah M. & Syahida A.
Natural Product Biochemistry Labarotary, Department of Biochemistry. Faculty of Biotechnology and
Thomolecular Sciences. Universiti Putra Malaysia. 43400 UPM. Serdang, Selangor
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Antioxidant Properties of Leaf & Bark Crude Extracts Of Gnetum Gnemon L. (Gnetaceae)


Medicinal and Aromatic Plants Seminar (MAPS 2008)


33rd October - 22nd October 2008

Place Held

The Legend Hotel, Kuala Lumpur


Gnetum gnemon is in the family Gnetaceae and is locally known as ‘melinjo or belinjo’. It has been cultivated several years ago in South East Asia countries such as Indonesia, Malaysia, Thailand and the Philippines for small scale food industries like biscuits or crispy chips. Mature fruits and young leaves or shoots of this species are widely found to have anti-asthmatic, anti-inflammatory properties and can reduce constipation. Antioxidant properties of the leaf and bark of C. gnemon were studied using ferricr educing power test. The leaf and bark of C. gnemon was extracted using methanol, ethanol. boiling water. hexane and chloroform. The highest antioxidant properties in leaf was in the boiling water extract (80.89%) white the lowest was in hexane crude extract (61.61%) at concentration of 300uglmI. The highest antioxidant activity in bark was in ethanol crude extract (72.61%) while the lowest was in chloroform crude extract (46.67%) at concentration of 300ug/ml. The results showed that the leaf extract prepared using boiling water gave the highest antioxidant activity than bark crude extract. It also showed that local C. gnemon could be another potential source of natural dietary antioxidant to replace several synthesized antioxidant that might have carcinogenic effects.


Gnetum gnemon; antioxidant; ferric-reduciower test


Poster Abstracts


Global, Act Local: A New Paradigm In Malaysian Herbal Industry (Prof. Emeritus Dr. Abdul Latif Ibrahim-UNISEL)