Effect of Nickel as Stress Factor on Phenol Biodegradation by KB2.

This study focuses on the phenol biodegradation kinetics by KB2 in a nickel-contaminated medium. Initial tests proved that a nickel concentration of 33.3 mg·L caused a cessation of bacterial growth.

Enzymes involved in vinyl acetate decomposition by Pseudomonas fluorescens PCM 2123 strain.

Esterases are widely used in food processing industry, but there is little information concerning enzymes involved in decompositions of esters contributing to pollution of environment. Vinyl acetate (an ester of vinyl alcohol and acetic acid) is a representative of volatile organic compounds (VOCs) in decomposition, of which hydrolyses and oxidoreductases are mainly involved. Their activities under periodically changing conditions of environment are essential for the removal of dangerous VOCs.