Determination of Volatile Organic Compounds and Antibacterial Activity of the Amazonian Cyanobacterium sp. Strain GFB01.

Cyanobacteria exhibit great biotechnological potential due to their capacity to produce compounds with various applicability. Volatile organic compounds (VOCs) possess low molecular weight and high vapor pressure. Many volatiles produced by microorganisms have biotechnological potential, including antimicrobial activity.

Molecular identification of rapidly growing mycobacteria isolates from pulmonary specimens of patients in the State of Pará, Amazon region, Brazil.

We isolated 44 strains of rapidly growing mycobacteria (RGM) from 19 patients with pulmonary infections assisted at the Instituto Evandro Chagas (Pará, Brazil) from 2004 to 2007. Identification at the species level was performed by PCR restriction fragment length polymorphism analysis (PRA) of a 441 bp hsp65 fragment and partial 16S rRNA, hsp65, and rpoB gene sequencing. Genotyping by PRA yielded 3 digestion patterns: one identical to Mycobacterium abscessus type I (group I); another to M.