Photodestruction of Propionibacterium acnes Porphyrins

Open Access
Publisher Website
Google Scholar
Abstract
The fluorescence spectra of colonies of P. acnes were studied under various experimental conditions. The spectra contained peaks at 580 and 620 nm. These bands were due to 2 different components: the 580 nm component was likely to be a metalloporphyrin and there are indications that the 620 nm component could be a coproporphyrin. The 580 nm fluorescence was destroyed by the combined action of light and O2 (no destruction under strict anaerobic conditions). A dark period interrupting the bleaching light stopped the destruction of this component for the time of the dark period. The initial production of the 620 nm component was due to the O2 exposure. Upon light irradiation this component was later destroyed by the combined action of O2 and light.

This publication has 1 reference indexed in Scilit: