. The chemical activities of bacteria. Bacteria. 120 BACTERIAL POLYSACCHAEIDES In other cases the extracellular gum or slime is a glucosan. Organisms such as Leuconostoc dextranicus, Betacoccus arabi- nosus, etc., will synthesise glucosan when grown in the presence of sucrose. The glucosan has a long chain structure in which the repeating unit is. Bacterial cellulose Acetobacter xylinum (see p. 149) produces a slimy envelope when growth takes place in the presence of sucrose or glycerol. The envelope is composed of a polysaccharide which has the same structure as that of vegetable cellulose, i
. The chemical activities of bacteria. Bacteria. 120 BACTERIAL POLYSACCHAEIDES In other cases the extracellular gum or slime is a glucosan. Organisms such as Leuconostoc dextranicus, Betacoccus arabi- nosus, etc., will synthesise glucosan when grown in the presence of sucrose. The glucosan has a long chain structure in which the repeating unit is. Bacterial cellulose Acetobacter xylinum (see p. 149) produces a slimy envelope when growth takes place in the presence of sucrose or glycerol. The envelope is composed of a polysaccharide which has the same structure as that of vegetable cellulose, a chain structure consisting of cellobiose as the repeating unit:. 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 Gale, E. F. (Ernest Frederick). New York, Academic Press
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