Cov monosaccharides tau nthuav tawm ua cov kab sib txuas qhib siv cov qauv qhia (Daim duab 1.1) ntawm Fischer. Txawm li cas los xij, hauv kev daws, tsuas yog cov trioses thiab tetroses muaj nyob rau hauv qhov muaj txiaj ntsig zoo hauv daim ntawv no. Pentoses thiab hexoses undergo cyclization, i.e. lawv tsim cov qauv nplhaib.
Cov piv txwv ntawm trioses yog dab tsi?
Ob tug ib txwm tshwm sim yog aldotriose (glyceraldehyde) thiab ketotriose (dihydroxyacetone) . Cov trioses no yog cov metabolites tseem ceeb hauv kev ua pa ntawm tes. Piv txwv li, glyceraldehyde-3-phosphate (C3H7O6P) yog metabolites triose. uas ua haujlwm ua tus nruab nrab hauv cov txheej txheem metabolic sib txawv.
Tus qauv ntawm triose yog dab tsi?
Ib triose yog monosaccharide, los yog yooj yim qab zib, muaj peb cov pa roj carbon atoms.
Muaj pes tsawg hom qauv ntawm lub nplhaib ua tau rau fructose?
Daim duab 11.6 . Nplhaib Structures ntawm Fructose. Fructose tuaj yeem tsim ob qho tib si tsib-tus tswv cuab furanose thiab rau-tus tswv cuab pyranose rings. Hauv txhua kis, ob qho tib si α thiab β anomers ua tau.
Vim li cas monosaccharides tsim cov qauv nplhaib?
Monosaccharides raug cais raws li txoj haujlwm ntawm pawg carbonyl thiab tus naj npawb ntawm cov pa roj carbon monoxide hauv qaum. … Cov qauv ntawm lub nplhaib no tshwm sim los ntawm cov tshuaj tiv thaiv ntawm cov pab pawg ua haujlwm nyob rau ntawm qhov kawg ntawm qab zib cov saw hlau hloov tau, uas yogcarbonyl pawg thiab ib pawg hydroxyl nyob deb.
