Feem ntau thaum xaiv cov khoom xyaw rau ci lossis siv txhua hnub, peb poob. Peb raug hem nrog kev puas tsuaj ntawm margarine, kis, lossis butter cov khoom, txawm hais tias qhov tseeb, tsis yog txhua yam ua rau muaj kev hem thawj. Yuav ua li cas xaiv: butter, margarine, thiab seb lawv puas tuaj yeem noj tau?
butter
Butter yog ua los ntawm hnyav whipping cream; nws muaj tsis tsawg dua 72.5% (qee 80% lossis 82.5%) rog. Ntau tshaj li ib nrab ntawm cov rog no yog saturated fatty acids.
Cov roj ntau yog suav tias yog kev phom sij rau lub plawv thiab cov hlab ntshav. Lawv nce cov roj "tsis zoo" lossis cov lipoprotein tsawg-tsawg, coalesce thiab txhaws cov hlab ntshav.
Tab sis lipoproteins yuav tsis clump yog tias tsis tau txais yam tsis zoo xws li dawb radicals los ntawm ib puag ncig. Yog tias koj noj qee cov tshuaj antioxidants - txiv hmab txiv ntoo thiab txiv hmab txiv ntoo thiab muaj tus cwj pwm phem, cov roj (cholesterol) phem yuav sib sau.
Txwv tsis pub, lub butter tsis ua mob rau lub cev, tab sis ntawm qhov tsis tooj, nws txhim kho kev tiv thaiv thiab tiv thaiv kev kis mob.
Butter tuaj yeem siv rau kev kho cua sov ntawm cov khoom. Muaj tsuas yog 3% ntawm fatty acids, uas, thaum rhuab, hloov mus rau hauv carcinogens. Txawm li cas los xij, nws yog qhov zoo dua los siv melted butter rau kib vim butter muaj cov mis nyuj protein, uas pib hlawv ntawm qhov kub thiab txias.
Margarine
Margarine muaj 70-80% cov rog uas tsis muaj cov rog fatty acids. Nws yog qhov ua pov thawj tias kev hloov pauv ntawm cov roj ntsha muaj roj nrog kev tsis txaus nrog kev txo qis kev pheej hmoo ntawm kev txhim kho cov kab mob plawv.
Yog li ntawd, yog hais tias ib tug neeg muaj atherosclerosis yam, xws li haus luam yeeb, hnyav hnyav, kev nyuaj siab, heredity, thiab hormonal ntshawv siab, nws yog tsim nyog los muab kev nyiam rau margarine.
Margarine tseem suav tias yog teeb meem vim yog TRANS fatty acids tsim nyob rau hauv cov txheej txheem hydrogenation ntawm cov roj zaub. 2-3% ntawm TRANS fatty acids muaj nyob rau hauv butter, kev pheej hmoo ntawm cov kab mob ntawm lub plawv thiab cov hlab ntsha nce TRANS rog ntawm cov hauv paus chiv keeb. Raws li Cov Qauv, cov roj TRANS hauv margarine yuav tsum tsis pub tshaj 2%.
Tsis txhob muab cov tshuaj margarine tso rau hauv kev kho cua sov. Margarine muaj los ntawm 10.8 rau 42.9% ntawm polyunsaturated fatty acids. Thaum rhuab mus rau 180 degrees, margarine emit txaus ntshai aldehydes.
kis
Kev sib kis yog cov khoom lag luam uas muaj feem ntau ntawm cov rog tsis pub tsawg dua 39%, suav nrog tsiaj thiab zaub rog.
Muaj ob peb hom kev sib kis:
- cov zaub creamy (58.9% ntawm cov roj nyeem muaj roj thiab 36.6% tsis muaj tsiaj txhu txaus);
- butter (54,2% saturated thiab 44.3% tsis txuas);
- roj muaj roj (36,3% saturated thiab 63.1% ntawm tsis muaj kev tiv thaiv).
Hauv butter thiab zaub rog ua rau kis, muaj tsawg dua roj nyob hauv butter tab sis ntau dua li ntawm margarine. Hais txog TRANS fatty acids, tus naj npawb ntawm lawv hauv cov khoom noj yuav tsum tsis pub tshaj 2%.
Nws zoo dua tsis txhob siv kev sib kis rau kib thiab ci: nws muaj txog 11% polyunsaturated fatty acids, uas, thaum kho kom sov, ua rau muaj cov carcinogens.