Articles

Antioxidant Activity and Total Phenolic Contents In Selected Traditional Vegetables

Author

ERNY SABRINA M.N., ABDULLAH M.Z, NUR DALIANA Y , ROSALI H.& MOHD SHUKOR N.

Proceeding

The 21st Annual Seminar of the Malaysian Natural Product Society.(Herbal Medicine:Natural Products S ciety), Palm Garden, Putrajaya Malaysia.

Date

22/11/2005

Keyword

antioxidant activity, phenolic content, ferric thiocynate, Folin-Ciocalteu, traditional vegetables

Abstract

This study was carried out to determine the relationship between antioxidant activity and total phenolic contents in selected common traditional vegetables, namely Puchea indica (beluntas), Colubrina asiatica (peria pantai), Premna foetida (bebuas), Anacardium occidentale (gajus) and Barringtonii racemosa (putat kecil). The antioxidant activity was determined by using the ferric thiocyanate method and  the phenolic content was determined using a modified version of the Folin-Ciocalteu method.  Among the plants studied, C. asiatica  exhibited the highest antioxidant activity followed by B. racemosa, P. foetida, A. occidentale and P. indica with values of  98.4 ± 1.2%, 95.1 ± 1.8%, 94.3 ± 1.7%, 92.2 ± 2.7% and 78.5 ± 4.4% , respectively.  A. occidentale showed the highest total phenolic content, expressed as caffeic acid equivalents while P. indica contained  the lowest.  The study indicated that there was no relationship between antioxidant activity and total phenolic contents  in the  traditional vegetables.