Comparison of the Phenolic Compounds Content and Composition in Synechocystis sp. Sauvageau and Desertifilum tharense Dadheech et Krienitz

Objective: To compare the phenolic compounds in Synechocystis sp. PCC 6803 and Desertifilum tharense cyanobacteria. Methods: Total phenolics were measured spectrophotometrically. Composition was analyzed via TLC and UV spectrometry. Results and Discussion: Synechocystis sp. had nearly double the phenolic content of D. tharense. Both species accumulated more phenolics during linear growth (day 3). TLC revealed 4 phenolic compounds in Synechocystis sp. and 7 in D. tharense, including conjugates of p-hydroxybenzoic and p-coumaric acids. Conclusions: Cyanobacteria produce phenolic compounds, with Synechocystis sp. being more productive. The diversity of phenolics differs between species, confirming the universality of their biosynthesis in prokaryotes.