USING A 5-AMINOLEVULINIC ACID DERIVATIVE AND METHOD TO INCREASE POLYPHENOL CONTENT IN A PLANT

摘要

polyphenol content enhancing agent for plants. to provide a polyphenol increasing agent that increases the polyphenol content in a plant. a plant polyphenol increasing agent containing, as an active ingredient, a 5-aminolevulinic acid or a derivative thereof represented by the following formula (i): r ^ 2 ^ r ^ 1 ^ nch ~ 2 ~ coch ~ 2 (1) wherein or ^ 1 ^ and r ^ 2 ^ each independently represents a hydrogen atom, an alkyl group, an acyl group, an alkoxycarbonyl group, an aryl group, or an aralkyl group ; R3 represents a hydroxyl group, an alkoxy group which may have a substituent, an acyloxy group, an alkoxycarbonyloxy group, an aryloxy group, an aralkyloxy group, or an amino group, or a salt thereof.