Fatty Acids vs Triglycerides
Lipids yog ib chav kawm ntawm cov khoom noj uas feem ntau suav nrog triglycerides (rog thiab roj), phospholipids, thiab sterols. Fatty acid thiab triglycerides yog cov organic; muaj carbon, hydrogen thiab oxygen atoms.
Fatty Acids yog dab tsi?
Fatty acids yog cov organic ua los ntawm cov roj carbon ntev nrog hydrogen atoms txuas nrog thiab ib pawg methyl (-CH 3) ntawm ib kawg thiab ib pawg acid (-COOH) ntawm lwm qhov kawg. Nyob ntawm seb muaj C=C ob daim ntawv cog lus, fatty acids tuaj yeem muab faib ua ob hom; saturated thiab unsaturated fatty acids. Saturated fatty acids tsis muaj C=C ob daim ntawv cog lus, whereas unsaturated fatty acids ua. Feem ntau cov natural fatty acids muaj cov naj npawb ntawm carbon atoms, mus txog 24 atoms ntev. Txawm li cas los xij, cov qauv thiab kev ua haujlwm ntawm fatty acid tuaj yeem sib txawv nyob ntawm lawv qhov ntev ntawm cov saw hlau, tus nqi, thiab qhov chaw ntawm ob daim ntawv cog lus tam sim no hauv cov saw.
Muaj ob hom unsaturated fatty acids, uas yog monounsaturated thiab polyunsaturated fatty acids. Cov monounsaturated fatty acids yog fatty acids uas tsis muaj ob lub H atoms thiab muaj ib ob daim ntawv cog lus ntawm ob lub atoms uas nyob ib sab. Hom fatty acids no tsim cov roj monounsaturated. Cov polyunsaturated fatty acids muaj ob lossis ntau dua C=C ob daim ntawv cog lus thiab tsis muaj plaub lossis ntau dua H atoms thiab muaj lub luag haujlwm tsim cov roj polyunsaturated. Fatty acids yog muab los ntawm triglycerides thiab phospholipids. Qee qhov piv txwv rau fatty acids yog linoleic acid, stearic acid, thiab oleic acid.
Triglycerides
Triglycerides suav nrog cov rog thiab roj thiab suav tias yog hom lipid ntau tshaj plaws hauv cov zaub mov thiab hauv lub cev. Triglyceride yog cov organic ester tsim los ntawm esterification ntawm glycerol molecule thiab peb fatty acid chains. Ib qho kev sib xyaw ntawm triglyceride molecules uas muaj feem pua ntawm cov kab txuas ntev ntev saturated fatty acids hu ua rog, qhov sib xyaw ntawm triglycerides uas muaj cov feem pua ntawm cov roj fatty acids tsis txaus lossis cov roj ntsha luv luv saturated fatty acids hu ua roj. Qee cov triglycerides molecules yog tsim los ntawm peb yam fatty acids. Txawm li cas los xij, feem ntau ob lossis peb qhov sib txawv fatty acids molecules muaj nyob rau hauv triglyceride molecules. Triglyceride yog insoluble nyob rau hauv dej vim muaj cov loj hydrocarbon chains.
Qhov txawv ntawm Fatty Acids thiab Triglycerides yog dab tsi?
• Fatty acids yog carboxylic acids nrog -COOH qhov chaw, whereas triglycerides yog organic esters.
• Fatty acids yog muab los ntawm triglycerides.
• Peb fatty acid molecules thiab ib glycerol molecule undergo esterification los tsim ib triglyceride molecule.
• Tsis zoo li triglycerides, fatty acids tuaj yeem muab faib ua ob pawg nyob ntawm seb muaj C=C ob daim ntawv cog lus. Txawm li cas los xij, ob hom no tau koom nrog tsim triglyceride molecules.
