Biomedical subjects
Publications and source records attributed to M Kulhánek.
Systemic scleroderma is a general disease of the connective tissue which may affect practically any organ. The authors describe the case of a man where in the course of the disease affection of the heart with symptoms of severe cardiac failure became the dominating symptom.
Aerobic fermentation of media or solutions containing 2-deoxy-D-lyxo-hexose and calcium carbonate by bacterial cells capable of oxidizing aldoses to aldonic acids was used to prepare 2-deoxy-D-lyxo-hexonic acid; the acid was isolated in a 62% yield in the form of its 1,4-lactone.
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Using fermentation with a selected strain of Acetomonas oxydans it was possible to convert 2-deoxy-2-fluro-D-glucitol to 5-deoxy-5-fluoro-L-sorbose, in agreement with Bertrand's and Hudson's rule. The last-named compound was isolated in a yield of 88%. Both compounds were little toxic against Acetomonas oxydans.
Fermentation of nutrient media by a selected strain of Acetomonas oxydans with a continuous pH control gave D-lyxo-5-hexulosonate in the form of a calcium or potassium salt with a yield equal to 95% of theory. The media contained up to 20 g D-mannose per 100 ml and a small amount of a readily assimilated monosaccharide.
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Fermentation of a medium containing 5% 2-deoxy-D-glucose and barium carbonate by a strain of Pseudomonas aeruginosa yielded barium 2-deoxy-D-gluconate. The yield was 77% theoretical. The strain in question makes it possible to prepare directly calcium, magnesium, manganese and ferrous salts of 2-deoxy-D-gluconic acid. A treatment of 5% solution of 2-deoxy-D-glucose with commercial glucose oxidase preparation caused also a complete dehydrogenation.
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