Energy transfer in photosynthetic bacteria as examined by photoacoustic spectroscopy

Abstract
Antenna carotenoids are investigated by photoacoustic spectroscopy in the photosynthetic bacteria Rhodospirillum rubrum and Rhodopseudomonas sphaeroides. Energy storage in these organisms is revealed by the photoacoustic spectra. A simple method is proposed to evaluate the efficiency of energy transfer between carotenoids and bacteriochlorophyll.