. Bacterial photosynthesis. Bacteria -- Physiology; Photosynthesis. 404 PHOTOMECHANICAL CONSIDERATIONS BChl + O BChlO, 2 '^2 spectrum Fig. 2 The chemical back reaction with ascorbic acid: BChl^ + a. a. + H^- •-BChl' + + HgO chemiluminescence BChl' *- BChl A chemiluminescence in the spectral region of bacteriochlorophyll fluorescence indeed is measured upon addition of ascorbic acid to photobleached bacteriochlorophyll solutions (Fig. 7), This addition is successful up to 30 minutes after bleaching. If ascorbic acid is added before the onset of illumination, a photooxidation of this compou
. Bacterial photosynthesis. Bacteria -- Physiology; Photosynthesis. 404 PHOTOMECHANICAL CONSIDERATIONS BChl + O BChlO, 2 '^2 spectrum Fig. 2 The chemical back reaction with ascorbic acid: BChl^ + a. a. + H^- •-BChl' + + HgO chemiluminescence BChl' *- BChl A chemiluminescence in the spectral region of bacteriochlorophyll fluorescence indeed is measured upon addition of ascorbic acid to photobleached bacteriochlorophyll solutions (Fig. 7), This addition is successful up to 30 minutes after bleaching. If ascorbic acid is added before the onset of illumination, a photooxidation of this compound, Luminescence (rel units ). Fig. 7. Chemiluminescence due to addition of ascorbic acid to photobleached bacteriochlorophyll (added 10 minutes after bleaching) and chemiluminescence due to illumination of bacteriochlorophyll-ascorbic acid mixtures. measured as oxygen uptake during illumination, as well as an emission of chemiluminescence, is observed. Part of the electron energy stored in ascorbic acid thus appears to be emitted as Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Symposium on Bacterial Photosynthesis (1963 : Yellow Springs, Ohio); Charles F. Kettering Research Laboratory (Yellow Springs, Ohio); Gest, Howard. Yellow Springs, Ohio, Antioch Press
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