Lub Benedict's reagent, uas yog cov tshuaj xiav, raug txo kom muaj xim liab. Yog tias cov pab pawg aldehyde thiab ketone ua haujlwm tseem khi rau hauv glycosidic daim ntawv cog lus glycosidic Daim ntawv cog lus glycosidic lossis glycosidic linkage yog ib hom covalent daim ntawv cog lus uas koom nrog cov carbohydrate (qab zib) molecule rau lwm pab pawg, uas tej zaum yuav los yog tsis yog lwm yam carbohydrate. https://en.wikipedia.org › wiki › Glycosidic_bond
Glycosidic daim ntawv cog lus - Wikipedia
(raws li qhia hauv cov qauv ntawm raffinose), ces lawv tsis tuaj yeem hnov qab nrog Benedict's reagent.
Benedict's reagent react nrog dab tsi?
Ib qho kev sim rau muaj ntau yam carbohydrates yooj yim yog siv Benedict's reagent. Nws hloov los ntawm turquoise mus rau daj lossis txiv kab ntxwv thaum nws tshwm sim nrog txo cov suab thaj. Cov no yog cov carbohydrates yooj yim nrog unbound aldehyde lossis ketone pawg.
Dab tsi tsis hnov mob nrog Benedict's reagent?
Cov khoom ntawm sucrose decomposition yog qabzib thiab fructose, ob qho tib si tuaj yeem kuaj tau los ntawm Benedict's reagent raws li tau piav qhia saum toj no. Starches tsis txhob hnov qab lossis ua tsis zoo nrog Benedict's reagent vim qhov tsawg tsawg ntawm kev txo cov piam thaj moieties uas tshwm sim tsuas yog qhov kawg ntawm cov carbohydrate chains.
Puas yog raffinose txo qab zib lossis tsis txo qab zib?
Qhov trisaccharide no muaj ntau heev hauv cov noob, nplooj, stems, thiab cov hauv paus hniav. Raws liyog pov thawj los ntawm nws cov qauv (nws cov anomeric carbon atoms koom nrog hauv glycosidic bonds), nws yog tsis txo qab zib.
Puas Benedict cov tshuaj tiv thaiv nrog cawv?
Txo cov suab thaj muaj ib pawg carbonyl dawb, xws li ketone lossis aldehyde. Yog li, Benedict qhov kev sim yog siv rau kev kuaj pom ntawm ketone lossis aldehyde. … Nws muaj ib pab pawg neeg ua dej cawv yog li, ethanol tsis tuaj yeem muab qhov kev kuaj pom zoo rauBenedict qhov kev sim. Yog li, ethanol yuav tsis ua rau muaj kev hloov xim zoo hauv Benedict qhov kev sim.
