Production of phenols and alkyl gallate esters by Rhodobacter sphaeroides OU5.

Rhodobacter sphaeroides OU5 grows phototrophically with generation doubling time of 18 h on L-phenylalanine when used as sole source of nitrogen. Phenols accumulated in the medium and gallate (0.5 mM) was identified as one of the major product. The others namely protocatechuate (0.2 mM) and caffeate (0.1 mM) and also three putative phenol alkyl esters were identified using Liquid chromatography-mass spectroscopy (LC-MS) analysis from the culture supernatant. Rhodobacter sphaeroides OU5 strain could explain its capability to produce the bioactive compounds during the growth. This study sheds production of bioactive and their biological exploring molecules.