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Sucroseandmaltoseare disaccharidesbutsucrosein a nonreducingsugar while maltoseis a reducingsugar . Givereason . |
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Answer» Solution :(i)Sucrrose isa disaccharide that composed of `alpha ` -D glucose and `beta` - Dfrucotose. In sucrose C1 of`alpha ` - Dglucoseis joinedto C2 of D - FRUCTOSE . The glycosidicc bondthus formedis CALLED `alpha` -1,2- glycosidicbond . Since boththe carbonlycarbons(reducingcarbons) are involvedin thhe glycosidic bonding , sucroseis a non - reduccingsugar. (ii) Butmaltosecontianstwomolecules ofx - Dglucoseunitsthat are linked by an `alpha -1, 4`glycosidic bond . Anomericcarbon of one unitand C- 4 of otherunit are CONNECTED together . Sinceone of theglucose has the carbonlygroupintact it actsas reducingsugar. |
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