Abstract
The DPPH radical scavenging activity was compared between arabushi-dashi and karebushi-dashi. Extraction at 100°C for 30 min resulted in the strongest radical scavenging activity for both types of dashi. Arabushi-dashi showed 1.7-1.8 times stronger radical scavenging activity than karebushi-dashi under all extraction conditions. A Porapak Q examination for the separation of aroma showed arabushi-dashi to have 4.4 times stronger radical scavenging activity than karebushi-dashi in the adsorption to the resin. The difference in activity between the two types of dashi was derived from the content of phenol compounds. The radical scavenging activity of two phenol compounds was identified for the first time. The radical scavenging activity of the non-adsorbed fraction was the same for both types of dashi.
