Qhov sib txawv tseem ceeb ntawm sucrose thiab fructose yog sucrose yog disaccharide thaum fructose yog monosaccharide.
Sucrose thiab fructose yog categorized li carbohydrates. Lawv yog hom ntau tshaj plaws ntawm cov organic molecules nyob hauv lub ntiaj teb. Lawv yog lub hauv paus ntawm chemical zog rau cov kab mob nyob. Lawv kuj ua haujlwm tseem ceeb ntawm cov ntaub so ntswg. Carbohydrates tuaj yeem muab faib ua peb li monosaccharides, disaccharides thiab polysaccharides. Monosaccharides yog hom carbohydrate yooj yim tshaj plaws. Glucose, galactose, thiab fructose yog monosaccharides. Monosaccharides raug cais raws li tus naj npawb ntawm cov pa roj carbon atoms tam sim no hauv cov molecule thiab seb lawv puas muaj aldehyde lossis keto pawg.
A monosaccharide nrog rau 6 carbon atoms hu ua hexose. Yog hais tias muaj tsib carbon atoms, ces nws yog ib tug pentose. Tsis tas li ntawd, yog tias cov monosaccharide muaj ib pawg aldehyde, nws hu ua aldose. Ib qho monosaccharide nrog pawg keto hu ua ketose. Disaccharides yog tsim los ntawm kev sib txuas ob monosaccharide molecules. Qhov no yog cov tshuaj tiv thaiv condensation qhov twg cov dej molecule raug tshem tawm. Sucrose, lactose, thiab m altose yog ob peb yam piv txwv ntawm disaccharides. Ob qho tib si disaccharides thiab monosaccharides qab zib hauv saj. Lawv soluble nyob rau hauv dej. Ob leeg txo cov suab thaj (tshwj tsis yog sucrose).
Sucrose yog dab tsi?
Sucrose yog ib qho disaccharide. Nws yog tsim los ntawm kev sib txuas cov piam thaj (aldose qab zib) thiab fructose (ketose qab zib) molecules ntawm glycosidic daim ntawv cog lus. Thaum cov tshuaj tiv thaiv no, ib qho dej molecule raug tshem tawm ntawm ob lub molecules. Sucrose tuaj yeem ua rau hydrolyzed rov qab rau hauv cov molecules pib thaum xav tau. Sucrose muaj cov qauv hauv qab no.
Qhov no yog ib qho disaccharide uas peb pom muaj nyob hauv cov nroj tsuag. Glucose, uas yog tsim los ntawm photosynthesis nyob rau hauv nplooj, yuav tsum tau muab faib mus rau lwm yam loj hlob thiab khaws cia qhov chaw ntawm cov nroj tsuag. Yog li ntawd, nyob rau hauv cov nroj tsuag, qabzib hloov mus rau sucrose thiaj li yuav faib lawv. Peb paub txog sucrose hauv peb lub neej niaj hnub, vim peb siv qhov no ua cov suab thaj. Industrially qab zib cane thiab beet yog siv los tsim cov suab thaj. Sucrose yog dawb crystalline khoom. Nws muaj qab zib, thiab nws yooj yim soluble hauv dej.
Fructose yog dab tsi?
Fructose yog monosaccharide uas muaj rau carbon atoms. Yog li ntawd, nws yog hexose qab zib. Tsis tas li ntawd, nws muaj ib pawg keto, yog li hu ua ketose. Fructose muaj cov qauv hauv qab no. Fructose feem ntau muaj nyob rau hauv txiv hmab txiv ntoo, qab zib cane, qab zib beet, pob kws, thiab lwm yam.
Raws li qabzib, fructose kuj muaj cov qauv monosaccharide yooj yim nrog cov tshuaj formula C6H12O6. Txawm hais tias nws tau pom tias yog cov qauv linear, fructose tuaj yeem tshwm sim raws li cov qauv cyclic ib yam nkaus. Qhov tseeb, hauv kev daws, feem ntau ntawm cov molecules yog nyob rau hauv cov qauv cyclic. Thaum cov qauv cyclic yog tsim, -OH ntawm carbon 5 yog hloov dua siab tshiab rau hauv ether linkage, kaw lub nplhaib nrog carbon 2. Qhov no tsim ib tug tsib-ntiv nplhaib qauv. Lub nplhaib tseem hu ua lub nplhaib hemiketal, vim muaj cov pa roj carbon monoxide uas muaj ether oxygen thiab ib pawg cawv.
Qhov txawv ntawm Sucrose thiab Fructose yog dab tsi?
Qhov sib txawv tseem ceeb ntawm sucrose thiab fructose yog sucrose yog disaccharide thaum fructose yog monosaccharide. Fructose koom nrog hauv kev ua sucrose los ntawm kev sib txuas nrog cov piam thaj. Tsis tas li ntawd, qhov hnyav molecular ntawm sucrose yog siab dua li ntawm fructose. Thiab, cov tshuaj formula ntawm fructose yog C6H12O6 thaum cov tshuaj formula ntawm sucrose yog C12H22O11 Tsis tas li ntawd, fructose yog qhov txo qis qab zib, hos sucrose yog qhov tsis txo qis. qab zib.
Hauv qab info-graphic qhia qhov txawv ntawm sucrose thiab fructose.
Summary – Sucrose vs Fructose
Fructose yog monosaccharide uas muaj rau carbon atoms. Sucrose yog tsim los ntawm kev sib txuas cov piam thaj (aldose qab zib) thiab fructose (ketose qab zib) molecules ntawm glycosidic daim ntawv cog lus. Qhov sib txawv tseem ceeb ntawm sucrose thiab fructose yog sucrose yog disaccharide thaum fructose yog monosaccharide.
Image Courtesy:
1. "Sucrose qauv mis" Los ntawm Bas - Tus kheej tsim nrog Sucrose-inkscape.svg los ntawm Commons No-p.webp
2. "D-L-Fructose V1" Los ntawm Poyraz 72 - Tus kheej ua haujlwm (CC BY-SA 4.0) ntawm Commons Wikimedia
