Flavonoid, phenylpropanoid and coumarins characteristics in lemons from the bonin islands (kikuchi lemons)

Abstract

The characteristics of flavonoid, phenylpropanoid, and coumarins in Bonin Island lemons (Kikuchi lemons), ranging in maturing from low to high, were examined and subsequently compared to those of Meyer lemons, Eureka lemons, and Satsuma mandarins. A distinctive compound, 7-methoxy-5-prenyloxycoumarin, was isolated from the Kikuchi lemons. Hesperidin was the main flavonoid found in Kikuchi lemons. Meyerin was detected in Kikuchi, Meyer, and Eureka lemons. The flavedo of Kikuchi lemons had a higher content of both 5, 7-dimethoxycoumarin and 7-methoxy-5-prenyloxycoumarin than the flavedo of Eureka lemons. The flavonoid, phenylpropanoid, and coumarins characteristics in Kikuchi lemons were similar to those of Meyer lemons.