“…Among aromatics are phenols which are found in agricultural and industrial wastes. In this group, caffeic acid, gallic acid, tyrosol, 4-hydroxybenzoic, and protocatechuic acid are found in olive oil, red wine and tanning wastewaters and in the degradation products of lignin [3,4], while phenol and catechol are well known industrial pollutants [5]. All these compounds may inhibit microbial activity [6,7], and therefore cause difficulties in bioremediation and potentially reduce the ability to produce biofuels by biomass fermentation.…”