Antioxidant activities of mangun Coleus amboinicus and mahkota dewa Phaleria papuana

Kong S Y., . and Umi Kalsom Y., . (2009) Antioxidant activities of mangun Coleus amboinicus and mahkota dewa Phaleria papuana. [Proceedings Paper]

The leaves and stems of Coleus amboinicus and the leaves fruits and seeds of Phaleria papuana were extracted with methanol and water and tested for their antioxidant activities. The antioxidant activities were analyzed by 2 2-diphenyl-2-picrylhydrazyl DPPH radical scavenging assay ferric thiocyanate FTC method and thiobarbituric acid TBA method. Results of the study showed that the strongest free radical scavenging activity was shown by dried fruit of P. papuana IC5098.2 ug/ml andthis was followed by fresh fruit IC50179.8 ug/ml leaves lC50372.4 ug/ml and seeds IC50431.5 ug/ml of P. papuana Whereas the leaves and stems of C. amboinicus showed weak free nidical scavenging activity with IC50500 ug/m1. The results for FTC assay showed that the methanolic extracts of all six samples had active antioxidant activity. The leaves and stem of C. amboinicus showed strong activity compared to BHT standard. The water extracts of the samples showed somewhat a different pattern from the methanolic extracts. The dried fruit pulp leaves and seed extracts of P. papuana showed active antioxidant activity while fruit pulp of Ppapuana and leaves of C. amboinicus showed moderate antioxidant activity whereas stem of C. amboinicus showed weak activity. The results for TBA assay confirmed the results obtained from FTC assay by showing a similar pattern.

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Abstract

The leaves and stems of Coleus amboinicus and the leaves fruits and seeds of Phaleria papuana were extracted with methanol and water and tested for their antioxidant activities. The antioxidant activities were analyzed by 2 2-diphenyl-2-picrylhydrazyl DPPH radical scavenging assay ferric thiocyanate FTC method and thiobarbituric acid TBA method. Results of the study showed that the strongest free radical scavenging activity was shown by dried fruit of P. papuana IC5098.2 ug/ml andthis was followed by fresh fruit IC50179.8 ug/ml leaves lC50372.4 ug/ml and seeds IC50431.5 ug/ml of P. papuana Whereas the leaves and stems of C. amboinicus showed weak free nidical scavenging activity with IC50500 ug/m1. The results for FTC assay showed that the methanolic extracts of all six samples had active antioxidant activity. The leaves and stem of C. amboinicus showed strong activity compared to BHT standard. The water extracts of the samples showed somewhat a different pattern from the methanolic extracts. The dried fruit pulp leaves and seed extracts of P. papuana showed active antioxidant activity while fruit pulp of Ppapuana and leaves of C. amboinicus showed moderate antioxidant activity whereas stem of C. amboinicus showed weak activity. The results for TBA assay confirmed the results obtained from FTC assay by showing a similar pattern.

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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:	ANTIOXIDANTS
AGROVOC Term:	COLEUS AMBOINICUS
AGROVOC Term:	TRADITIONAL MEDICINES
AGROVOC Term:	PLANT 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/11361

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