Lipid vs Fat
Txhua tus neeg nyob xav tau lub zog kom muaj sia nyob. Cov nroj tsuag ua rau lawv tus kheej lub zog, tab sis feem ntau lwm tus yuav tsum tau txais lub zog no los ntawm kev noj zaub mov. Lipids lossis rog muaj nyob hauv cov nroj tsuag thiab tsiaj txhu. Nws yog ib qho tseem ceeb nyob rau hauv cov tsiaj txhu thiab belongs rau ib qho ntawm cov chav kawm tseem ceeb ntawm biomolecules thiab macronutrients. Lipids thiab rog muaj nyob rau hauv ntau yam khoom noj xws li butter, margarine, nqaij, qe, mis nyuj, cheese, zaub roj, kua roj thiab lwm yam. Cov no yog zom los ntawm enzyme lipase hauv peb lub cev thiab siv rau ntau yam txheej txheem metabolic xws li cellular. ua pa. Qee cov lipids thiab cov rog yog siv los ua cov khoom siv ntawm tes / cov ntaub so ntswg. Tab sis lipids thiab rog yog tib yam? Tsis yog. Qhov tseeb, lipids yog ib qho ntawm cov chav kawm loj ntawm biomolecules thiab cov rog ib pawg ntawm lipids.
Dab tsi yog lipids?
Lipids yog ib chav kawm ntawm biomolecules. Muaj ntau hom lipids pom nyob rau hauv cov kab mob muaj sia xws li siv quav ciab, rog, steroids, glycerides, phospholipids thiab fat soluble vitamins thiab lwm yam. Lawv ua haujlwm rau ntau yam kev ua haujlwm lom neeg xws li xov tooj ntawm tes, lub zog cia, cov khoom siv hauv cell membrane thiab lwm yam. Cov yam ntxwv dav dav ntawm lipids yog hydrophobic lossis amphiphilic xwm. Qhov xwm txheej no tso cai rau lawv tsim cov vesicles thiab daim nyias nyias hauv peb cov hlwb. Phospholipids thiab roj cholesterol ua raws li cov khoom siv ntawm tes. Wax yog tsim raws li ib tug excretion nyob rau hauv cov tsiaj thiab cov nroj tsuag. Cov tshuaj steroids pom tias yog cov tshuaj hormones poj niam txiv neej, thiab lwm yam tshuaj uas tswj lub cev ua haujlwm. Feem ntau ntawm cov lipids no yog tsim los ntawm txoj hauv kev biosynthetic hauv peb lub cev. Lipids uas tsis tsim tawm yog hu ua cov lipids tseem ceeb thiab raug coj los ntawm kev noj haus.
rog yog dab tsi?
Ntawm cov chav kawm lipid ntau yam pom hauv peb lub cev, muaj ib chav kawm ntawm lipids hu ua glycerides. Glycerides tuaj yeem yog, monoglycerides, diglycerides lossis triglycerides nyob ntawm seb muaj pes tsawg tus fatty acid chains muaj nyob rau hauv ib qho roj molecule. Cov rog yog lub npe hu ua triglycerides. Triglycerides yog tsim los ntawm peb fatty acid chains reacting nrog glycerol los tsim cov khoom esterified triglycerides. Qhov no yog lub zog loj reservoir nyob rau hauv cov tsiaj. Cov rog yog khaws cia rau hauv cov hlwb tshwj xeeb hu ua adipocytes (fatty cells). Cov ntaub so ntswg no muaj nyob rau hauv ob sab phlu rau hauv nruab nrog cev tiv thaiv lawv los ntawm kev raug mob thiab sab nraud siab. Cov rog yaj hauv cov kuab tshuaj organic tab sis tsis yaj hauv dej. Cov rog tuaj yeem raug cais raws li cov rog saturated thiab unsaturated fats, kua roj thiab cov rog rog. Unsaturated fats tuaj yeem muab faib ua cis rog thiab Trans fats nyob ntawm qhov xwm ntawm hydrocarbon chains.
Dab tsi yog qhov txawv ntawm lipids thiab rog?
• Lipids yog ib chav loj ntawm biomolecules. Cov rog (triglycerides) yog cov pab pawg glycerides, uas yog ib pawg ntawm lipids.
• Lipids tuaj yeem yog hydrophobic (tsis yaj hauv dej) lossis amphiphilic (ib feem yaj hauv dej), tab sis cov rog, qhov tseem ceeb, tsis yaj hauv dej.
