Total phenolic content, antioxidant and antimicrobial activities of stink bean (Parkia speciosa Hassk.) pod extracts

• Main Authors: Suchanuch Wonghirundecha, Soottawat Benjakul, Punnanee Sumpavapol
• Format: Article
• Language: English
• Published: Prince of Songkla University 2014-06-01
• Series: Songklanakarin Journal of Science and Technology (SJST)
• Subjects: stink bean pod; antioxidant activity; antimicrobial activity; total phenolic content; total flavonoid content
• Online Access: http://rdo.psu.ac.th/sjstweb/journal/36-3/36-3-7.pdf

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.