| levulan | A polysaccharide of fructose (e.g., inulin) containing small amounts of other sugars; present in certain tubers. Synonym: levan, levulan, levulin, levulosan, polyfructose. (05 Mar 2000) |
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| levulic acid | 4-Oxopentanoic acid;CH3COCH2CH2COOH, formed by the action of hot, strong acids on hexoses. See: d-aminolevulinic acid. Synonym: levulic acid. (05 Mar 2000) |
| levulin | <chemistry> A substance resembling dextrin, obtained from the bulbs of the dahlia, the artichoke, and other sources, as a colourless, spongy, amorphous material. It is so called because by decomposition it yields levulose. Alternative forms: laevulin. Source: Websters Dictionary (01 Mar 1998) |
| levulinate | A salt or ester of levulinic acid. (05 Mar 2000) |
| levulinic | <chemistry> Pertaining to, or denoting, an acid (called also acetyl-propionic acid), C5H8O3, obtained by the action of dilute acids on various sugars (as levulose). Alternative forms: laevulinic. Source: Websters Dictionary (01 Mar 1998) |
| levulinic acid | 4-Oxopentanoic acid;CH3COCH2CH2COOH, formed by the action of hot, strong acids on hexoses. See: d-aminolevulinic acid. Synonym: levulic acid. (05 Mar 2000) |
| levulinic acids | Keto acids that are derivatives of 4-oxopentanoic acids (levulinic acid). (12 Dec 1998) |
| levulosaemia | Presence of fructose in the circulating blood. See: hereditary fructose intolerance. Synonym: levulosaemia. (05 Mar 2000) |
| levulosan | <chemistry> An unfermentable carbohydrate obtained by gently heating levulose. Source: Websters Dictionary (01 Mar 1998) |
| levulose | <chemistry> A sirupy variety of sugar, rarely obtained crystallized, occurring widely in honey, ripe fruits, etc, and hence called also fruit sugar. It is called levulose, because it rotates the plane of polarization to the left. Alternative forms: laevulose]> It is obtained, together with an equal quantity of dextrose, by the inversion of ordinary cane or beet sugar, and hence, as being an ingredient of invert sugar, is often so called. It is fermentable, nearly as sweet as cane sugar, and is metameric with dextrose. Cf. Dextrose. See: Levo-. Source: Websters Dictionary (01 Mar 1998) |
| levulosuria | Excretion of fructose in the urine. Synonym: levulosuria. Origin: fructose + G. Ouron, urine Essential fructosuria, a benign, asymptomatic inborn error of metabolism due to deficiency of fructokinase, the first enzyme in the specific fructose pathway; fructose appears in the blood and urine, but is simply excreted unchanged; autosomal recessive inheritance. A fructokinase deficiency. See: hereditary fructose intolerance. (05 Mar 2000) |
| Levy | Gabrielle, French neurologist, 1886-1935. See: Roussy-Levy disease, Roussy-Levy syndrome. (05 Mar 2000) |
| levynite | <chemical> A whitish, reddish, or yellowish, transparent or translucent mineral, allied to chabazite. Origin: From Mr. Levy, an English mineralogist. Source: Websters Dictionary (01 Mar 1998) |