Saturated vs Unsaturated Fatty Acids
Cov kua qaub yog tsim los ntawm cov hlau tsis muaj roj nrog cov pawg carboxyl ntawm ib kawg. Lawv suav nrog ntau yam khoom hauv lub cev nrog rau phospholipids, triglycerides, diglycerides, monoglyceride, thiab sterol esters. Feem ntau cov fatty acids muaj cov saw ntev ntawm 16 txog 18 tus naj npawb ntawm carbons. Raws li cov qauv tshuaj ntawm cov roj fatty acids, muaj ob hom fatty acids nyob rau hauv lub cev; uas yog, saturated thiab unsaturated fatty acids. Cov rog yooj yim yog tsim los ntawm glyceride thiab fatty acids. Cov rog yooj yim tshaj plaws yog triglyceride, ua los ntawm glyceride thiab peb fatty acids.
Saturated Fatty Acids yog dab tsi?
Saturated fatty acids muaj xws li cov pa roj carbon monoxide uas tsis muaj ob daim ntawv cog lus hauv nws. Cov fatty acids no tsim cov rog saturated. Cov roj saturated muaj ntau nyob rau hauv cov nqaij, tsiaj rog, tag nrho cov mis nyuj, butter, txiv maj phaub roj, thiab xibtes roj. Cov rog no muaj nyob rau hauv qhov chaw sov. Cov roj saturated nce qib roj cholesterol, yog li ua rau muaj kev pheej hmoo cuam tshuam nrog LDL cholesterol.
Dab tsi yog Unsaturated Fatty Acids?
Unsaturated fatty acids muaj cov hlua khi nrog ib lossis ntau C=C bonds. Cov fatty acids no yog tsim los tsim cov roj unsaturated. Lub ntsiab qhov chaw ntawm unsaturated fats feem ntau pom nyob rau hauv cov nroj tsuag. Muaj ob hom fatty acids raws li lawv tus lej C=C bonds; xws li (a) monounsaturated fatty acids, uas muaj tsuas yog ib qho C=C ob daim ntawv cog lus raws li cov roj fatty acids thiab muaj nyob rau hauv canola, txiv laum huab xeeb, txiv ntseej, avocado thiab cashews, thiab (b) polyunsaturated fatty acids, uas muaj ob los yog ntau tshaj C.=C ob daim ntawv cog lus thiab pom muaj nyob rau hauv cov ntses, almonds thiab pecans. Unsaturated fatty acids hu ua noj qab nyob zoo fatty acids vim lawv txo qis LDL cov roj cholesterol, yog li txo qhov kev pheej hmoo cuam tshuam nrog cov roj (cholesterol) phem.
Dab tsi yog qhov txawv ntawm Saturated thiab Unsaturated Fatty Acids?
• Saturated fatty acids tsim cov roj saturated, thaum unsaturated fatty acids tsim unsaturated fats.
• Saturated fatty acids tsis muaj ob npaug C=C ob daim ntawv cog lus nyob rau hauv cov roj fatty acids, thiab yog li cov saturated fatty acids muaj ntau tshaj plaws ntawm hydrogen atoms. Txawm li cas los xij, unsaturated fatty acids muaj ib lossis ntau lub ntsiab lus ntawm unsaturation, qhov twg hydrogen atoms ploj lawm hauv cov saw.
• Cov peev txheej ntawm cov roj saturated fatty acids yog tsiaj rog, txiv maj phaub roj, txiv maj phaub roj, whereas cov unsaturated fatty acids yog cov roj zaub thiab ntses roj.
• Saturated fats yog cov khoom nyob rau hauv chav tsev kub, thaum unsaturated fatty acids yog kua nyob rau hauv chav tsev kub.
• Lub neej txee ntawm cov roj saturated fatty acids ntau dua li ntawm unsaturated fatty acids.
• Tsis zoo li cov roj fatty acids tsis txaus, cov roj saturated fatty acids yog soluble hauv cov vitamins.
• Cov roj ntsha saturated nce cov roj cholesterol, qhov tsis muaj roj tsis txaus txo cov ntshav tag nrho thiab LDL roj cholesterol.
