title: [Resolution of the structure of the absorption spectrum of blue-green algae by a method of measuring the 2d derivative at -196 degrees C].
abstract: By measuring the 2nd derivative at -196 degrees C the thin structure of the absorption spectrum of intact cells, isolated in phycobilisomes and pure pigments of blue-green algae Anabaena variabilis and Aphanizomanon flos-aquae is shown. 8 absorption bands in the region 669--710 nm pertaining to chlorophyll a in different aggregation region were found. Almost the same number of bands were found in the region 550--660 nm. The latter were conditioned by the absorption of allophycocyanin, phycocyanin, and probably by phycoerythrin present in the form of different associates.
mesh_terms: D000458:Cyanobacteria; D009940:Organoids; D045524:Phycobilisomes; D010798:Phycocyanin; D010860:Pigments, Biological; D013045:Species Specificity; D013057:Spectrum Analysis; D013696:Temperature
chemical_list: D045524:Phycobilisomes; D010860:Pigments, Biological; D010798:Phycocyanin
vernacular_title: Razreshenie struktury spektra pogloshcheniia sine-zelenykh vodorosleĭ metodom izmereniia 2-i proizvodnoĭ pri -196 gradusov C.