Suchanuch Wonghirundecha, Soottawat Benjakul and Punnanee Sumpavapol

pp. 301 - 308

Abstract

Parkia speciosa Hassk. is a stink bean known as “Sataw”. This bean is popular in the Southern part of Thailand and
believed by the locals to have the medical properties. Stink bean pod, regarded as waste material, was reported to possess
various biological activities. The aim of the present study was to investigate the total phenolic content, antioxidant and
antimicrobial activities of Sataw-Khao and Sataw-Dan pod extracts. It was found that the extraction yield, total phenolic and
total flavonoid contents of Sataw-Dan pod extract were higher than those of Sataw-Khao pod extract. For antioxidant activity,
both stink bean pod extracts had potent antioxidant activity by the radical-scavenging DPPH and ABTS methods, and the
metal ion chelating assay. In addition, both extracts showed antimicrobial activity against food-borne pathogenic bacteria
and food spoilage bacteria. Therefore, stink bean pod extract could be effectively used as a natural preservative. 

Keywords

• stink bean pod
• antioxidant activity
• antimicrobial activity
• total phenolic content
• total flavonoid content