Qhov sib txawv tseem ceeb ntawm homolactic thiab heterolactic fermentation yog tias nyob rau hauv homolactic fermentation, ib lub qabzib molecule hloov mus rau hauv ob lub lactic acid molecules, whereas nyob rau hauv heterolactic fermentation, ib tug qabzib molecule tsim lactic acid, carbon dioxide, thiab ethanol.
Fermentation yog txheej txheem metabolic uas cov organic molecules hloov mus rau hauv acids, gases lossis cawv. Cov txheej txheem no tshwm sim thaum tsis muaj oxygen lossis lwm yam khoom siv hluav taws xob thauj khoom. Lub luag haujlwm tseem ceeb ntawm cov txheej txheem fermentation yog rov tsim NAD + los ntawm NADH kom nws tuaj yeem siv dua hauv cov txheej txheem glycolysis. Muaj ob hom kev fermentation loj xws li lactic acid fermentation thiab ethanol fermentation.
Lactic Acid Fermentation yog dab tsi?
Lactic acid fermentation yog cov txheej txheem lom neeg uas cov piam thaj lossis cov suab thaj zoo sib xws tau hloov mus rau hauv lub zog ntawm tes thiab metabolite lactate. Ntawm no, cov piam thaj molecule tuaj yeem yog cov piam thaj los yog lwm yam 6-carbon qab zib molecule. Disaccharides xws li sucrose tuaj yeem siv tau. Lactate yog lactic acid hauv kev daws. Lactic acid fermentation yog cov txheej txheem anaerobic uas tshwm sim hauv qee cov kab mob thiab cov tsiaj hlwb, suav nrog cov leeg hlwb.
Homolactic Fermentation yog dab tsi?
Homolactic fermentation yog kev hloov pauv ntawm ib qho piam thaj molecule rau hauv ob lub lactic acid molecules. Nws yog qhov opposite ntawm heterolactic fermentation. Cov txheej txheem ntawm homolactic fermentation suav nrog cov kab mob homofermentative, uas tuaj yeem hloov cov piam thaj rau hauv ob lub molecules ntawm lactate, thiab cov tshuaj tiv thaiv no yog siv rau kev ua haujlwm ntawm substrate-theem phosphorylation thiaj li ua rau ob lub ATP molecules. Cov tshuaj tiv thaiv yog raws li nram no:
Glucose + 2 ADP + 2Pi → 2 lactate + 2 ATP
Thaum lub sijhawm homolactic fermentation, pyruvate txo qis rau lactate lossis lactic acid nyob rau hauv muaj lactate dehydrogenase enzyme. Cov txheej txheem no hu ua "homo-" vim nws tsim ib qho kua qaub ua cov khoom kawg.
Daim duab 01: Lactic Acid Fermentation
Feem ntau, cov kab mob lactic acid uas tuaj yeem nqa tawm homolactic fermentation yog hu ua homofermenters. Cov kab mob no tuaj yeem tsim cov lactic acid los ntawm txoj kev glycolytic. Cov kab mob ntau tshaj plaws uas tuaj yeem ua cov txheej txheem no suav nrog Lactococcus lactis, Streptococcus hom, thiab hom kab mob thermobacteria.
YHeterolactic Fermentation yog dab tsi?
Heterolactic fermentation yog kev hloov pauv ntawm ib qho qabzib molecule rau hauv lactic acid molecule, carbon dioxide, thiab ethanol. Nws yog cov txheej txheem rov qab ntawm homolactic fermentation. Cov txheej txheem no suav nrog cov kab mob heterofermentative uas muaj peev xwm tsim cov lactate tsawg dua thiab tsawg dua ATP piv, tab sis lawv tuaj yeem tsim ntau lwm yam khoom, suav nrog ethanol thiab carbon dioxide. Cov tshuaj tiv thaiv rau cov txheej txheem no yog raws li nram no:
Glucose + ADP + 2Pi → lactate + ethanol + CO2 + ATP
Qee yam piv txwv ntawm cov kab mob heterofermentative muaj xws li Leuconostoc mesenteroides, Lactobacillus bifermentous, thiab Leconostoc lactis.
Qhov txawv ntawm Homolactic thiab Heterolactic Fermentation yog dab tsi?
Fermentation yog txheej txheem lom neeg tseem ceeb. Muaj ob hom ethanol fermentation thiab lactic acid fermentation. Tsis tas li ntawd, lactic acid fermentation tuaj yeem muab faib ua ob pawg ua homolactic thiab heterolactic fermentation. Qhov sib txawv tseem ceeb ntawm homolactic thiab heterolactic fermentation yog nyob rau hauv homolactic fermentation, ib cov piam thaj molecule hloov mus rau hauv ob lactic acid molecules whereas, nyob rau hauv heterolactic fermentation, ib tug qabzib molecule tsim lactic acid, carbon dioxide thiab ethanol.
Ntxiv mus, homolactic fermentation muaj ATP ntau lawm piv rau heterolactic fermentation. Tsis tas li ntawd, homolactic fermentation suav nrog homofermenters xws li Lactococcus lactis, Streptococcus hom thiab thermobacteria hom, whereas heterolactic fermentation suav nrog heterofermenters xws li Leuconostoc mesenteroides, Lactobacillus bifermentous, thiab Leconostoc lactis.
Cov hauv qab no infographic suav qhov sib txawv ntawm homolactic thiab heterolactic fermentation hauv daim ntawv.
Summary – Homolactic vs Heterolactic Fermentation
Fermentation yog txheej txheem lom neeg tseem ceeb. Muaj ob hom ethanol fermentation thiab lactic acid fermentation. Tsis tas li ntawd, lactic acid fermentation tuaj yeem muab faib ua ob pawg ua homolactic thiab heterolactic fermentation. Qhov sib txawv tseem ceeb ntawm homolactic thiab heterolactic fermentation yog tias nyob rau hauv homolactic fermentation, ib cov piam thaj molecule hloov mus rau hauv ob lub lactic acid molecules, whereas nyob rau hauv heterolactic fermentation, ib tug qabzib molecule tsim lactic acid, carbon dioxide thiab ethanol.
