Qhov sib txawv tseem ceeb ntawm Pasteur effect thiab Crabtree effect yog tias Pasteur effect yog vim tsis muaj oxygen, whereas Crabtree effect yog ntxias los ntawm cov piam thaj ntau dhau.
Cov nyhuv Pasteur yog cov nyhuv ntawm inhibiting oxygen hauv cov txheej txheem fermentation. Crabtree nyhuv yog qhov tshwm sim uas cov poov xab tsim ethanol nyob rau hauv aerobic tej yam kev mob ntawm siab sab nraud qabzib concentration. Cov teebmeem no muaj kev sib raug zoo rau ib leeg, tab sis qhov ua rau muaj qhov sib txawv ntawm ib leeg, raws li tau hais los saum toj no hauv nqe lus tseem ceeb sib txawv.
Pasteur nyhuv yog dab tsi?
Cov nyhuv Pasteur yog cov nyhuv ntawm inhibiting oxygen hauv cov txheej txheem fermentation. Cov nyhuv no hloov cov txheej txheem dheev los ntawm anaerobic mus rau aerobic. Qhov no yog thawj zaug los ntawm Louis Pasteur nyob rau hauv 1857. Nws qhia tau hais tias lub aerating poov xab broth yuav ua rau cov poov xab cell loj hlob, thaum conversely, fermentation tus nqi txo.
Daim duab 01: Portrait ntawm Louis Pasteur hauv nws chav kuaj
Feem ntau, cov poov xab yog ib qho facultative anaerobe uas muaj peev xwm tsim tau lub zog siv ob txoj hauv kev loj hauv metabolic. Thaum cov pa oxygen concentration tsawg, lawv muab ethanol thiab carbon dioxide los ntawm pyruvate hauv glycolysis. Ntawm no, cov efficiency ntawm lub zog tsim muaj tsawg heev. Ntawm cov pa oxygen siab, pyruvate hloov mus rau hauv acetyl Co-A thiab lub zog ua haujlwm tau siab. Cov nyhuv Pasteur tsuas yog tshwm sim yog tias cov piam thaj concentration tsawg thiab nyob rau hauv qhov txwv tsis pub muaj nitrogen thiab lwm yam khoom noj.
Crabtree Effect yog dab tsi?
Crabtree nyhuv yog qhov tshwm sim uas cov poov xab tsim ethanol nyob rau hauv aerobic tej yam kev mob ntawm siab sab nraud qabzib concentration. Lub tswv yim no yog thawj zaug los ntawm Askiv biochemist Herbert Grace Crabtree. Cov txheej txheem ib txwm muaj tshwm sim hauv cov poov xab yog tsim cov biomass ntawm lub voj voog tricarboxylic acid.
Daim duab 02: Ethanol Fermentation
Kev nce qib ntawm cov piam thaj tuaj yeem ua rau muaj kev nrawm ntawm cov txheej txheem glycolysis thiab tsim cov txiaj ntsig zoo ntawm ATP los ntawm qib phosphorylation substrate. Tsis tas li ntawd, cov nyhuv no ua rau txo qhov kev xav tau ntawm oxidative phosphorylation uas tshwm sim los ntawm TCA lub voj voog (los ntawm cov saw hlau thauj hluav taws xob), txo cov pa oxygen. Cov nyhuv Crabtree tau hloov zuj zus raws li kev sib tw ntawm lub sijhawm thaum cov txiv hmab txiv ntoo poob los ntawm tsob ntoo thawj zaug. Ntxiv mus, cov nyhuv no ua haujlwm los ntawm kev tawm tsam ntawm kev ua pa los ntawm txoj kev fermentation, uas nyob ntawm cov substrate.
Dab tsi zoo sib xws ntawm Pasteur Effect thiab Crabtree Effect?
- Ob qho teebmeem ua rau pib ntawm fermentation.
- Cov teebmeem no cuam tshuam nrog ib leeg.
Qhov txawv ntawm Pasteur Effect thiab Crabtree Effect yog dab tsi?
Cov nyhuv Pasteur yog cov nyhuv ntawm inhibiting oxygen ntawm cov txheej txheem fermentation. Crabtree nyhuv yog qhov tshwm sim uas cov poov xab tsim ethanol nyob rau hauv aerobic tej yam kev mob ntawm siab sab nraud qabzib concentration. Cov teebmeem no muaj kev sib raug zoo rau ib leeg, tab sis qhov ua rau cov nyhuv txawv ntawm ib leeg. Qhov sib txawv tseem ceeb ntawm cov nyhuv Pasteur thiab cov nyhuv Crabtree yog tias cov nyhuv Pasteur yog ntxias los ntawm qhov tsis muaj oxygen, thaum cov nyhuv Crabtree yog ntxias los ntawm cov piam thaj ntau dhau.
Cov hauv qab no infographic teev qhov sib txawv ntawm Pasteur effect thiab Crabtree effect nyob rau hauv daim ntawv tabular rau ib sab sib piv
Summary – Pasteur Effect vs Crabtree Effect
Cov nyhuv Pasteur yog cov nyhuv ntawm inhibiting oxygen hauv cov txheej txheem fermentation. Crabtree nyhuv yog qhov tshwm sim uas cov poov xab tsim ethanol nyob rau hauv aerobic tej yam kev mob ntawm siab sab nraud qabzib concentration. Cov teebmeem no muaj kev sib raug zoo rau ib leeg, tab sis qhov ua rau cov nyhuv txawv ntawm ib leeg. Qhov sib txawv tseem ceeb ntawm cov nyhuv Pasteur thiab cov nyhuv Crabtree yog tias cov nyhuv Pasteur yog ntxias los ntawm qhov tsis muaj oxygen, thaum cov nyhuv Crabtree yog ntxias los ntawm cov piam thaj ntau dhau.
