释义 |
levan
levan[′le‚van] (biochemistry) (C6H10O5)n A polysaccharide consisting of repeating units ofD-fructose and produced by a range of microorganisms, such as Bacillus mesentericus. levan
fruc·to·san (fruk'tō-san), 1. A polysaccharide of fructose (for example, inulin) containing small amounts of other sugars; present in certain tubers. Synonym(s): fructan, levan, levulan, levulin, levulosan, polyfructose2. 2,6-Anhydrofructofuranose. levan Dentistry A fructose homopolymer linked by β-2,6 bonds, formed by the partial digestion of sucrose by Bacillus and Streptococcus spp, which is a component of dental plaque representing the first biochemical event in cariogenesis. See Caries, Plaque. Cf Periodontal disease. |