Qhov sib txawv tseem ceeb ntawm micelles thiab chylomicrons yog tias micelles yog globules ntawm lipid molecules uas tau teem rau hauv daim ntawv kheej kheej hauv cov kua dej thaum chylomicrons yog lipoproteins uas muaj cov tub ntxhais ua los ntawm triglycerides thiab cov roj cholesterol thiab lub tsho tiv no los ntawm phospholipids thiab apolipoproteins.
Lipids yog hydrophobic molecules uas tsis yog-polar thiab dej-insoluble. Lawv tsim muaj roj globules hauv dej. Micelles thiab chylomicrons yog ob hom rog globules. Lawv yog spherical nyob rau hauv cov duab. Micelles yog spherical aggregates ntawm lipid molecules nyob rau hauv ib tug aqueous tov. Chylomicrons yog ib hom lipoproteins uas muaj triglycerides, cholesterols, phospholipids, proteins thiab apolipoproteins. Lawv thauj cov lipids los ntawm txoj hnyuv mus rau lwm cov ntaub so ntswg hauv lub cev.
Micelles yog dab tsi?
Micelle yog ib qho sib sau ua ke ntawm phospholipids txheej txheem nyob rau hauv ib daim ntawv kheej kheej hauv cov kua dej. Lawv tsim nyob rau hauv teb rau amphipathic xwm ntawm fatty acids. Micelles muaj ob thaj chaw hydrophilic thiab thaj chaw hydrophobic. Cov cheeb tsam hydrophilic yog cov pab pawg neeg lub taub hau thaum cov cheeb tsam hydrophobic yog cov hlua ntev hydrophobic (tails). Cov pawg polar taub hau yog hydrophilic nyob rau hauv qhov xwm txheej thiab feem ntau koom nrog hauv kev tsim ntawm txheej txheej ntawm micelles. Cov tails hydrophobic muaj nyob rau hauv cov qauv los tiv thaiv kev cuam tshuam nrog dej vim lawv qhov tsis yog-polar hydrophobic xwm.
Daim duab 01: Micelles
Cov roj ntsha uas tsim los ntawm micelles muaj ib txoj hlua hydrocarbon nyob rau hauv qhov sib txawv ntawm ob txoj hlua hydrocarbon. Cov qauv no tso cai rau cov fatty acids los tsim cov duab kheej kheej, txo cov steric hindrance uas tshwm sim hauv fatty acid molecules lawv tus kheej. Qhov ntau thiab tsawg ntawm cov micelles txawv ntawm 02 nm txog 20 nm. Qhov loj me yog nyob ntawm qhov muaj pes tsawg leeg thiab concentration ntawm micelles. Vim lub amphipathic xwm ntawm lub molecule, micelles tsim spontaneously nyob rau hauv dej thiab.
Nyob rau hauv lub ntsiab lus ntawm tib neeg lub cev, micelles pab nyob rau hauv kev nqus ntawm lipid thiab fat-soluble vitamins xws li vitamin A, D, E thiab K. Lawv kuj pab cov hnyuv me hauv kev nqus ntawm cov lipids thiab cov vitamins. muab tau los ntawm daim siab thiab lub zais zis.
YChylomicrons yog dab tsi?
Chylomicrons yog ib hom lipoproteins uas ua rau hauv endoplasmic reticulum ntawm txoj hnyuv nqus cell lossis enterocytes. Lawv muaj phospholipids, triglycerides, cholesterol thiab proteins. Hauv cov chylomicron, muaj cov triglycerides ntau thiab tsawg dua cov roj cholesterol. Sab nraud ntawm chylomicron, muaj phospholipids thiab apolipoproteins.
Daim duab 02: Chylomicron
Triglycerides thiab roj cholesterol yog insoluble hauv dej. Yog li, lawv tsis soluble hauv plasma. Txhawm rau thauj cov lipids noj zaub mov, lawv tau ntim raws li chylomicrons, uas yog lipoprotein hais. Thaum ua tiav, chylomicrons thauj cov lipids ntawm txoj hnyuv mus rau adipose, cov leeg nqaij thiab cov nqaij pob txha. Lipoprotein lipases hydrolyze cov triglycerides nyob rau hauv chylomicrons thiab tso cov fatty acids dawb thiaj li yuav absorbed los ntawm lub hom phiaj cov ntaub so ntswg.
Dab tsi yog qhov zoo sib xws ntawm Micelles thiab Chylomicrons?
- Micelles thiab chylomicrons yog rog globules.
- Ob leeg micelles thiab chylomicrons yog tsim nyob rau hauv cov hnyuv hlwb.
- Ntxiv mus, ob qho no muaj cov tub ntxhais hydrophobic thiab hydrophilic lub tsho.
Qhov txawv ntawm Micelles thiab Chylomicrons yog dab tsi?
Micelles yog cov sib xyaw ntawm lipid molecules tsim nyob rau hauv cov tshuaj aqueous thaum chylomicrons yog triglyceride-nplua nuj lipoproteins uas tau tsim los thauj cov lipids ntawm txoj hnyuv mus rau adipose, skeletal thiab plawv cov leeg nqaij. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm micelles thiab chylomicrons. Tsis tas li ntawd, structurally, micelles yog tsim los ntawm phospholipids thaum chylomicrons yog tsim los ntawm triglycerides, cholesterol, phospholipids thiab apolipoproteins.
Ntxiv mus, micelles pab hauv kev nqus ntawm lipid thiab fat-soluble vitamins xws li vitamin A, D, E thiab K thaum chylomicrons thauj hydrophobic lipids los ntawm txoj hnyuv me mus rau adipose, pob txha thiab cov leeg nqaij.
Hauv qab infographic tabulates qhov sib txawv ntawm micelles thiab chylomicrons.
Summary – Micelles vs Chylomicrons
Ob leeg micelles thiab chylomicrons yog lipid globules tsim hauv cov tshuaj aqueous. Micelles tsuas yog tsim los ntawm phospholipids thaum chylomicrons yog tsim los ntawm triglycerides, cholesterol, phospholipids thiab apolipoproteins. Chylomicrons tsuas yog tsim nyob rau hauv txoj hnyuv kom thauj cov lipids ntawm txoj hnyuv mus rau lwm cov ntaub so ntswg. Yog li, qhov no qhia txog qhov sib txawv ntawm micelles thiab chylomicrons.
