I. Stereoisomerism
L-xylose thiab D-xylose yog stereoisomers, muaj tib lub qauv molecular tab sis txawv spatial kev npaj ntawm atoms.
II. Kev tshwm sim hauv Ntuj
D-xylose: Feem ntau pom nyob rau hauv cov xwm. Nws yog ib feem tseem ceeb ntawm hemicellulose nyob rau hauv cov nroj tsuag cell phab ntsa thiab kuj yog tsim los ntawm biomass hydrolysis. Nws yog lub endogenously tshwm sim ntawm xylose nyob rau hauv cov tsiaj.
L-xylose: Tsis tshua muaj ntau nyob rau hauv qhov. Nws tuaj yeem xa mus rau daim ntawv uas yog synthesized.
Cov hauv qab no yog cov chaw siv ntawm cov khoom:
III. Kev ua lom lom
D-xylose: Muaj peev xwm metabolized los ntawm qee yam kab mob. Nyob rau hauv tib neeg, nws yog absorbed nyob rau hauv cov hnyuv me thiab metabolized nyob rau hauv daim siab. Siv rau hauv kev kuaj mob los ntsuam xyuas txoj hnyuv ua haujlwm.
L-xylose: Feem ntau tsis metabolized los ntawm cov kab mob feem ntau. Tej zaum yuav muaj cov dej num tshwj xeeb hauv qee yam kab mob los yog nyob rau hauv cov xwm txheej tshwj xeeb, tab sis nws lub luag haujlwm lom neeg tsis nkag siab tsawg dua piv rau D-xylose.
Cov hauv qab no yog cov chaw siv ntawm cov khoom:
IV. Lub cev muaj zog
Tej zaum lawv yuav muaj qhov sib txawv ntawm lub cev xws li cov ntsiab lus melting, solubility, thiab optical rotation. Lawv tig lub dav hlau-polarized lub teeb nyob rau hauv ntau cov lus qhia vim lawv txawv stereochemical configurations.
V. Khoom siv
Cov khoom siv nrog xylitol thiab D-xylose muab lwm txoj hauv kev rau cov suab thaj thiab muaj cov txiaj ntsig kev noj qab haus huv suav nrog kev txhawb nqa kev noj qab haus huv, pab tswj qhov hnyav, thiab txhawb kev noj qab haus huv ntawm plab.
Yog tias koj xav paub ntxiv, thov nyem rau ntawm daim duab saum toj no!