Peb tau hnov ntau ntau hais tias "trans nqaijrog tsis zoo", thiab thaum nws muaj tseeb tias feem ntau cov rog hauv peb cov khoom noj hnub no muaj kev tsis zoo, qhov no yog qhov kev ua haujlwm loj. Qhov simplified, tab sis yog, tshaj plaws hais tias yog ib nrab hydrogenated yam tsis zoo rau peb. "Trans nqaijrog" tau rais los ua rau hom kab no, tiam sis kuj muaj lwm yam roj ntsha uas tej zaum yuav zoo rau peb.
American Heart Association pom zoo kom txwv cov nqaij ntshiv rau tsawg tshaj li ntawm 1% ntawm koj txhua hnub caloric kom tsawg.
Trans Transitions, Ua Dab Tsi?
Trans nqaijrog yog hom roj. Trans "yog hais txog cov qauv ntawm molecules Feem ntau cov rog hauv peb lub cev muaj qhov" cis "configuration. Trans thiab" cis "configurations ntawm tib lub qauv yog hu ua" stereoisomers ".
Artificial Trans Rog
Artificial trans roj yog ib hom roj tsim thaum zaub roj yog hardened los yog solidified los ntawm ib txoj kev kho mob nrog hydrogen ntawm kev kub siab thiab kub. Cov txheej txheem hloov cov kua roj ua kua rau hauv cov khoom los yog cov khoom ua rau ib nrab uas feem ntau ua rau hauv margarine lossis luv thiab ntxiv nrog ntau lwm cov khoom noj uas ua tiav. Feem coob ntawm trans nqaijrog nyob rau hauv peb cov khoom noj yog tsim los ntawm kev ntxiv rau kev sib txuas rau hydrogen mus rau cov roj ntsha tsis muaj kev sib raug zoo. Qhov no ua rau muaj roj ntau ruaj khov, yog li nws tsis lwj kom sai. Cov rog no feem ntau yog hu ua "cov roj ntsha hydrogenated" lossis "cov roj ntsha hydrogenated".
"Cov roj hydrogenated nkaus xwb" yuav tsum tsis txhob muaj cov roj ntsha ntawm trans, tab sis lawv tsis tau kawm ntau heev thaum nws tuaj txog kev ruaj ntseg ntawm peb txoj kev noj qab haus huv.
Cov pov thawj yog qhov tseeb tias qhov trans roj muaj txiaj ntsig rau kab mob hauv lub plawv. Xyoo 2015, lub Food and Drug Administration tau txiav txim siab muab cov khoom ua kom muaj rog raws li GRAS lossis "feem ntau pom tias muaj kev nyab xeeb" rau kev siv tib neeg noj.
Qhov kev txiav txim txhais tau hais tias cov zaub mov cov khoom noj muaj peb xyoo tshem tag nrho cov roj rog ntawm lawv cov khoom. Txawm li cas los xij, cov kev tshawb fawb pom tias tawm hauv cov khoom noj no yuav tsis yog ib txoj cai zoo li txoj kev tshawb no pom tias txawm hais tias tau tawm hauv teb chaws Europe, tsuas yog txo qis me ntsis hauv trans nqaijrog nyob hauv tib cov khoom noj thaum piv ua ntej thiab 3 xyoos tom qab cov cai " kev siv.
Ib Cov Kab Mob Hloov Ntoo: CLA yog Trans Trans Fat
Lwm hom rog uas muaj qhov sib txuas ua ke tau tshwm sim hauv cov mis thiab nqaij los ntawm tej tsiaj txhu (ruminants, zoo li nyuj thiab nyuj qus, tshwj xeeb tshaj yog cov neeg uas tau noj nyom li tsis tuaj yeem siv lis). Cov no yog hu ua trans fatty acids, los yog TFAs. Hom roj no hu ua conjugated linoleic acid (CLA), thiab nws zoo li zoo rau peb. Muaj me ntsis cov pov thawj uas CLA tuaj yeem tiv thaiv kab mob cancer, piv txwv. Txawm li cas los xij, zoo li ntau yam tshwm sim, cov kev tshawb fawb ntawm CLA nyob rau hauv daim ntawv ntawm cov khoom noj khoom haus ntxiv tau disappointing kom deb li deb.
Cov Khoom Noj Uas Muaj Cov Qib Siab hauv Trans?
Cov khoom noj uas muaj nqaij nyoos thiab lwm cov khoom noj muag khoom noj lossis cov zaub mov ua lag luam yuav ntxiv cov roj ntsha. Kev ncua sij hawm luv yog feem ntau ua los ntawm cov roj hydrogenated thiab thiaj li muaj ntau cov roj rog hauv nws.
Yav tag los, margarine tau ua los ntawm trans nqaijrog, thiab trans nqaijrog tau prominently siv nyob rau hauv tsev tsim cov crackers, ncuav qab zib, breads, pies, muffins, donuts, thiab cov zoo li. Nrog txoj cai tshiab, qhov no hloov, tab sis tej zaum tseem yuav muaj tseeb rau ib tus twg.
> Cov chaw
Dietary Reference Intakes rau Energy, Carbohydrate, Fibre, Muaj roj, Acid Acids, Cholesterol, Protein, thiab Amino Acids (Macronutrients) (2005), Lub koom haum tshuaj, Khoom noj khoom haus thiab khoom noj khoom haus Board, National Academy of Sciences.
Stendar, Steen, Astrup, Arne, Dyerbeg, Jorg. Artificial trans rog nyob rau hauv cov zaub mov nrov hauv 2012 thiab 2014: kev ua lag luam pob tawb tshawb hauv lub teb chaws Europe. BMJ Qhib. 2016 Hnub Tim 14; 6 (3): e010673.