1. Kev zom zaub mov kom nrawm (uas yog, cov dej hydrolysis nrawm) yog nrawm
Triglycerides feem ntau yog hauv cov hnyuv me. Lawv tau emulsified rau hauv cov dej me me colloidal los ntawm kev ua ntawm cov kua tsib kua qaub. Raws li kev ua ntawm pancreatic lipase, lawv tau hydrolyzed rau hauv ob lub molecules ntawm cov rog rog thiab ib qho qauv ntawm monoglycerides. Kev nqus los ntawm cov hlwb epithelial.
Vim yog qhov muaj zog hydrophilicity ntawmnruab nrab cov saw triglycerides, cov emulsified colloidal droplets tsim tau me dua, thiab tsawg dua emulsifiers (piv txwv li, cov kua tsib) yuav tsum tau, yog li cov tshuaj tiv thaiv hydrolysis feem ntau yuav tshwm sim. Hauv lwm lo lus, kev zom zaub mov ntawm cov saw nruab nrab triglycerides nrawm dua li cov saw triglycerides ntev.
2. Kev nqus sai
Cov kua qaub-nruab nrab cov roj tuaj yeem nqus tau ncaj qha los ntawm cov hnyuv epithelial hauv ob peb feeb xwb, thiab tom qab ntawd nkag mus rau cov ntshav ncig los ntawm cov hlab ntsha portal.
Cov roj ntsha sib txuas ntev yuav tsum rov ua dua tshiab nrog glycerol hauv cov hnyuv epithelial tsim cov triglycerides, thiab tom qab ntawd tsim chylomicrons nrog apolipoproteins, phospholipids thiab roj cholesterol, thiab tom qab ntawd nkag mus rau hauv cov ntshav los ntawm cov qog ntshav, uas siv sijhawm 3 txog 4 teev kom tiav. Yog li ntawd, cov saw triglycerides nruab nrab tau nqus sai dua cov saw triglycerides ntev thiab yog cov as-ham uas tuaj yeem muab lub zog sai.
3. Ua kom muaj zog sai
Hauv daim siab thiab cov leeg nqaij, cov kua qaub catabolism tau nqa tawm hauv mitochondria ntawm cov cell. Tsis zoo li cov saw roj hmab ntev, cov roj sib txuas hauv nruab nrab tuaj yeem nkag mus rau hauv mitochondria yam tsis tau thauj los ntawm L-carnitine shuttle system. Hauv lwm lo lus, lawv cov catabolism tsis txwv los ntawm L-carnitine shuttle system.
Raws li qhov tshwm sim, cov roj hmab nruab nrab-cov saw muaj feem cuam tshuam rau oxidation ntau dua li cov saw ntev fatty acids, thiab tuaj yeem muab cua sov rau txhua lub sijhawm thiab tsis yooj yim khaws cia. Ib qho ntxiv, vim tias cov saw hlau ntawm cov roj hmab nruab nrab-cov saw hlau tau luv, lawv tsis tuaj yeem siv los ua cov khoom siv rau cov rog rog ua ntej cov txheej txheem zom zaub mov ntawm kev nthuav tawm cov saw hlau tshwm sim.