Nitrates, nitrites thiab nitrosamines yog ib pawg ntawm cov carcinogens uas cuam tshuam nrog qee cov nitrogen tebchaw. Cov piv txwv feem ntau ntawm cov tebchaw no yog s altpeter, uas tau ntxiv me me rau cov hnyuv ntxwm, nqaij npua, cheese khoom, thiab ntau hom nqaij thiab ntses.
Kev phom sij ntawm qhov tshuaj ntxiv no yog dab tsi?
S altpeter yog nitrosamine, tau los ntawm decomposition ntawm nitrate los ntawm cov tshuaj tiv thaiv. Vim tias muaj kev phom sij los ntawm cov tshuaj sib xyaw no, cov ntsev ntsev tau hloov pauv thoob ntiaj teb nrog nitrates uas muaj ascorbic acid.
Txoj kev ntseeg nrov, nitrates lawv tus kheej tsis txaus ntshai. Tab sis thaum hloov mus rau nitrites thiab nitrosamines, cov khoom no ua rau muaj kev hem thawj rau tib neeg. Mob qog noj ntshav plab, uas yog ib qho ntawm cov neeg Nyij Pooj, yog tshwm sim tsis yog los ntawm asbestos siv hauv kev ntxuav mov xwb, tab sis kuj yog los ntawm tus cwj pwm noj cov ntses haus luam yeeb ntau uas muaj cov nitrosamines ntau.
Kuv yuav ua li cas thiaj txo tau cov tshuaj nitrosamines?
Kev phom sij ntawm nitrosamines yog exacerbated los ntawm cov khoom xws li aflatoxins thiab lwm yam mycotoxins. Mycotoxins yog cov tshuaj lom metabolic ntawm qee cov fungi. Lawv cov cawv muaj zog tshwj xeeb tshaj yog nyob rau hauv lub cev, uas tsis muaj cov vitamins C thiab E, uas yog blockers ntawm cov tebchaw. Hauv lwm lo lus, nitrosamines yog tshuaj lom, cov neutralizers uas yog antioxidants, uas yog, vitamins C thiab E.
Yog tias koj tsis tuaj yeem tso tseg cov khoom haus luam yeeb, ces noj txiv hmab txiv ntoo thiab zaub ntxiv nrog rau lawv, xws li zaub xam lav nrog zaub qhwv, dos ntsuab, txiv lws suav, ntsuab thiab liab tswb kua txob, beets, horseradish thiab tshuaj ntsuab. Hloov koj cov zaub mov nrog txiv kab ntxwv, txiv qaub thiab lwm yam txiv hmab txiv ntoo citrus, txiv pos nphuab, blackcurrants, thiab lwm yam khoom noj uas muaj cov tshuaj tua kab mob antioxidant. Nws tsim nyog ntxiv koj cov zaub mov nrog cov khoom noj uas muaj retinol (vitamin A) thiab tocopherol (vitamin E).
Thaum twg nitrates hloov mus ua nitrites thiab nitrosamines?
Raws li twb tau hais lawm, nitrates tsis txaus ntshai. Yog tias koj haus dej txaus, lawv yuav raug tawm ntawm lub cev los ntawm lawv tus kheej. Nitrosamines yog cov khoom ntawm cov tshuaj decomposition ntawm nitrates uas txaus ntshai rau peb lub cev. Cov tshuaj tsis zoo hauv lub cev tshwm sim thaum tus neeg muaj acidity tsawg lossis gastritis ntawm lub plab thiab cov hnyuv. Cov neeg laus thiab cov me nyuam mos feem ntau raug rau qhov tshwm sim no. Tus menyuam thawj cov zaub mov yuav tsum loj hlobntawm av tsis muaj chiv. Lwm qhov tseem ceeb hauv kev tsim cov nitrites thiab nitrosamines yog qhov tsis muaj kev tu cev kom zoo, yog li xyuas kom koj tus menyuam ua raws li nws. Tsuas yog haus cov kua txiv hmab txiv ntoo tshiab lossis khaws cia rau hauv lub tub yees kom koj cov zaub mov tsis dhau los ua chaw yug kab mob. Hauv thawj peb lub hlis ntawm tus menyuam lub neej, koj yuav tsum tau ceev faj kom tsis txhob muaj nitrites thiab nitrosamines hauv nws cov zaub mov.
Qhov twg tuaj yeem tsim nitrites thiab nitrosamines? Kev txiav txim siab ntawm nitrosamines
Nitrogen chiv, uas tuaj yeem pom muaj ntau hauv cov av, tuaj yeem ua rau tsim cov nitrites thiab nitrosamines hauv zaub, txiv hmab txiv ntoo thiab cereals cog rau ntawm nws. Tus nqi ntawm nitrates uas cov zaub mov tuaj yeem sau rau hauv lawv tus kheej nyob ntawm lawv lub hnub nyoog thiab ntau yam. Cov ntsiab lus ntawm nitrosamines nyob rau hauv cov tub ntxhais hluas cov nroj tsuag yog ntau zaus ntau dua nyob rau hauv cov laus laus.
Thaum lub caij nplooj ntoo hlav thiab caij nplooj zeeg, thaum cov dej hauv cov dej ntws nce siab, thiab cov teb tau fertilized nrog nitrogen chiv ntau, nitrates thiab nitrites poob rau hauv qhov dej thiab reservoirs. Txhua lub mis, tsis hais txog qhov ntau thiab qhov zoo ntawm kev ntsuas tshuaj tua kab mob, ib txwm muaj cov kab mob, uas, thaum dej ntxiv lossis mis nyuj yog diluted ncaj qha los ntawm cov neeg siv khoom, yooj yim tig mus rau nitrates thiab nitrites, maj mam tig mus rau nitrosamines.
Dab tsi yog qhov phom sij ntawm nitrosamines ntawm lub cev
Los ntawm txhua sab peb tau qhia txog qhov tsis zoo ntawm nitrates rau lub cev, tab sis dab tsiyog dab tsi tiag?
Cov muaj pes tsawg leeg ntawm nitrates zoo ib yam li cov xim ntawm cov ntshav (heme), uas yog vim li cas lawv yooj yim tig mus rau hauv methemoglobin. Nws tsuas yog zoo li hemoglobin, tab sis tsis muaj nws cov khoom tseem ceeb - thauj cov pa oxygen los ntawm cov ntshav los ntawm lub cev thiab cov khoom nruab nrog cev. Muaj ib hom kev hloov ntawm hemoglobin nrog methemoglobin, yog tias tus nqi tom kawg siab tshaj li tus qauv, ces lub cev ntsib kev tshaib plab oxygen.
Qhov phem tshaj plaws yog qhov ntau tshaj ntawm methemoglobin yuav tsis qhia rau koj los ntawm kev sim, uas nws qhov tsis tuaj yeem tsis pom, tab sis los ntawm xim av-xiav tint ntawm daim tawv nqaij nyob ib ncig ntawm daim di ncauj, maj mam kis mus thoob plaws hauv lub cev. lub cev. Yog hais tias tus nqi ntawm methemoglobin loj heev, ces cov tsos mob ntawm kev lom tshwm sim - xeev siab, ntuav, ua pa sai, anemia tuaj yeem tshwm sim qee zaum. Antioxidants thiab vitamin A tuaj yeem pab kho thiab tiv thaiv.
