Occurrence of 3-hydroxy acids in microalgae and cyanobacteria and their geochemical significance

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Scientific paper

3-Hydroxy acids were detected in pure cultured microalgae: Chlorophyta-- Chlamydomonas reinhardtii and Chlorella pyrenoidosa and Rhodophyta-- Cyanidium caldarium (two strains), and cyanobacteria (Cyanophyta)-- Anacystis nidulans, Phormidium foveolarum, Anabaena variabilis and Oscillatoria sp. Normal and branched (iso and anteiso) 3-hydroxy acids in the ranges of C 8 -C 26 were found in all the samples studied at concentrations ranging from 0.036 to 2.3 and 0.000 to 0.12 mg g -1 of dry sample, respectively. The major constituents were generally even-carbon numbered normal acids with carbon chain lengths below C 20 . Microalgae and cyanobacteria may be the important sources of 3-hydroxy acids in natural environments.

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