SYNTHESIS OF ALIPHATIC ESTERS OF 5-AMINOLEVULINIC ACID AND THEIR EFFECT ON THE PHOTOTROPHIC MICROALGAE GROWTH

Abstract

Method for preparation of 5-aminolevulinic acid (ALA) aliphatic esters with aliphatic alcohols (С1–С16) is described. Melting points, spectral parameters and chromatographic characteristics for the esters obtained have been determined. Critical micelle concentration values of ALA hexyl ester and higher homologs in aqueous buffered system have been estimated. The stimulatory effect of micelle forming ALA esters at 0.1 mM concentration on the accumulation of phototrophic microalgae Chlorella and Scenedesmus obliquus dry biomass has been established (106–182% of the control).