HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY OF PHENOLIC-ACIDS AND ALDEHYDES DERIVED FROM PLANTS OR FROM THE DECOMPOSITION OF ORGANIC-MATTER IN SOIL

Methods are described for the estimation by high-performance liquid chromatography of p-hydroxybenzoic, vanillic, and syringic acids, of their corresponding aldehydes, and of the cis and trans isomers of the substituted cinnamic acids, p-coumaric, ferulic, sinapic and caffeic. As little as 0.1 μg can be estimated by these methods. Application of the methods is illustrated by estimation of several of the acids and aldehydes in extracts, prepared with 1 M sodium hydroxide, of cell walls of Italian ryegrass (Lolium multiflorum L.) and of soil. © 1979.