Antioxidant properties of leaf and bark crude extracts of Gnetum gnemon L. Gnetaceae

Syahida A., . and Radzali M., . and Dayana W., . and Johari R., . and Maziah M., . (2009) Antioxidant properties of leaf and bark crude extracts of Gnetum gnemon L. Gnetaceae. [Proceedings Paper]

Gnetum gnemon L. in the family Gnetaceae is locally known as melinjo or belinjo. It has been grown in South East Asia countries such as Indonesia Malaysia Thailand and the Philippines for small scale food industries such as simple foods biscuits or crispy chips. Almost all parts of this plant from mature fruits to young leaves or shoots are widely found to have anti-asthmatic anti-inflammatory properties and can reduce constipation. The antioxidant properties of leaves and bark of G. gnemon were biochemically studied using ferric reducing power assay. The leaves and bark of G. gnemon were extracted using methanol ethanol boiling water hexane and chloroform. The highest antioxidant property in the leaves was in water extract 80.89 while the lowest was in hexane crude extract 61.61 at concentration of 300ug/ml. The highest antioxidant activity in the bark was in ethanol crude extract 72.61 while the lowest was in chloroform crude extract 46.67 at concentration of 300ug/ml. From the results it showed that the water leaf extract gave the highest antioxidant activity than bark crude extract. It also showed that local G. gnetum could be another potential source of natural dietary antioxidant to replace several synthesized antioxidant that might have carcinogenic effects.

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Abstract

Gnetum gnemon L. in the family Gnetaceae is locally known as melinjo or belinjo. It has been grown in South East Asia countries such as Indonesia Malaysia Thailand and the Philippines for small scale food industries such as simple foods biscuits or crispy chips. Almost all parts of this plant from mature fruits to young leaves or shoots are widely found to have anti-asthmatic anti-inflammatory properties and can reduce constipation. The antioxidant properties of leaves and bark of G. gnemon were biochemically studied using ferric reducing power assay. The leaves and bark of G. gnemon were extracted using methanol ethanol boiling water hexane and chloroform. The highest antioxidant property in the leaves was in water extract 80.89 while the lowest was in hexane crude extract 61.61 at concentration of 300ug/ml. The highest antioxidant activity in the bark was in ethanol crude extract 72.61 while the lowest was in chloroform crude extract 46.67 at concentration of 300ug/ml. From the results it showed that the water leaf extract gave the highest antioxidant activity than bark crude extract. It also showed that local G. gnetum could be another potential source of natural dietary antioxidant to replace several synthesized antioxidant that might have carcinogenic effects.

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Item Type:	Proceedings Paper
Additional Information:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. mal QK99 M3S471 2008 Call Number
AGROVOC Term:	GNETUM GNEMON
AGROVOC Term:	ANTIOXIDANTS
AGROVOC Term:	GNETACEAE
AGROVOC Term:	LEAVES
AGROVOC Term:	BARK
AGROVOC Term:	EXTRACTS
AGROVOC Term:	MALAYSIA
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:14
URI:	http://webagris.upm.edu.my/id/eprint/11374

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