Pamwe unoziva kuti chikafu chakawanda chatinotenga muchitoro kana musupamaketi chine zvimwe zvinhu zvakasiyana-siyana zvinowedzerwa pachiri kuti chigare chiri chitsva uye kuchengetedza kunaka kwacho. Asi unoziva here kuti zvinhu izvi zvinokanganisa sei hutano hwedu? Nhasi tiri kutaura nezvechimwe chinhu chiri kukurukurwa nevanhu vazhinji. Ndiyo sodium nitrate.
Chii chinonzi Sodium Nitrate?
Zvichitaurwa zviri nyore, sodium nitrate uye sodium nitrite, zvinhu zvinochengetedza nyama. Zvinonyanya kushandiswa mu "nyama yakacheneswa", zvakaita semasoseji, bhekoni, ham, uye meatballs. Hazvingowedzerwi kuchengetedza nyama kwenguva yakareba chete, asiwo kuipa ruvara rwepingi uye kunaka kwayo.
Asi chinoshamisa ndechekuti ma nitrate nema nitrites aya haangowanikwe muzvikafu zvakawedzerwa zvekugadzira chete. Anowanikwa mumiriwo yakaita sespinachi ne celery . Uye kunyange mvura yepombi yatinonwa inogona kunge iine zvimwe zvacho.
Miviri yedu inoda nitrates zvechokwadi here?
Ehe, ma nitrate nema nitrites anodiwa pakuita zvinhu zvakakosha mumuviri wedu. Kutaura zvazviri, 85% chete yema nitrate atinodya mukudya kwedu anobva mumiriwo .
Zvinoitika mukati memiviri yedu zvakakosha zvikuru. Ma nitrate atinodya anoshandurwa kuita ma nitrites nemuviri. Ma nitrites aya anobva ashanduka kuita chimwe chezvibereko zviviri. Chimwe chinhu chakanaka kwazvo kwatiri, uye chimwe chinhu chine njodzi zvishoma.
Rutivi rwakanaka: Nitric Oxide
Uyu ndiye "munhu akanaka" munyaya yedu. Nitric oxide, molecule inoumbwa kubva mu nitrite, inokosha pahutano hwemwoyo yedu.
- Zvinobatsira kuderedza BP .
- Inotambanudza mitsipa yeropa uye inovandudza kutenderera kweropa .
- Izvi zvinoita kuti ive rubatsiro rukuru mukudzivirira zvirwere zvemwoyo .
Ndosaka kudya kwakapfuma mumiriwo kuchinzi kwakanaka pamoyo. Nekuti miriwo inopa ma nitrate anodiwa nemuviri wedu kuti ugadzire nitric oxide.
Rutivi rune njodzi: Nitrosamines
Uyu ndiye "munhu akaipa" munyaya iyi. Chepfu yeNitrate neNitriteChikonzero chikuru chinoita kuti ionekwe seine chepfu uye ine njodzi imhaka yemakemikoro anonzi nitrosamines. Aya macarcinogens , zvichireva kuti zvinhu zvinogona kukonzera kenza.
Ndosaka Sangano reHutano repasi rose (WHO) rakazivisa kuti nyama dzakagadzirwa dzinokonzera kenza . Pakupisa kwakanyanya, ma nitrites anowanzoita mapuroteni ari munyama kuti aumbe ma nitrosamine aya ane njodzi.
Chokwadi chakavanzika chiri shure kwechinyorwa che "Nitrate-Free"
Zvino, kana uchienda kusupamaketi, ungangove wakaona masoseji nebhekoni zvakanyorwa zvinhu zvakaita sekuti " organic ", "no added nitrates", uye "nonitrate-free". Vanhu vazhinji vanofunga kuti izvi zvakachengeteka zvachose. Asi pane chakavanzika chidiki pano chatinofanira kuziva.
Vanoda nzira yekuchengetedza zvinhu izvi zvinonzi "zvisina nitrate". Pakuita izvozvo, vanoshandisa upfu hweseleri .
Funga nezvazvo, celery muriwo une nitrate yakawanda. Saka zvinoitika kana ukawedzera celery powder zvakafanana nezvinoitika kana ukawedzera sodium nitrate inogadzirwa nemakemikari. Izvi zvinoreva kuti chigadzirwa ichi chinewo nitrate. Kunyangwe ichigona kunzi "isina nitrate" nekuti hachina kuwedzerwa nemakemikari, maererano nemutemo, mhedzisiro yacho mumuviri yakafanana. Nitrate idzodzo dzinogonawo kushanduka kuita nitrosamines.
Chinhu chinonyanya kukosha chekuteerera ndechekuti:
- Kune miganhu yepamutemo pamishonga inowedzerwa nemakemikari. Masangano akaita seFDA (Food and Drug Administration) akaisa huwandu hwepamusoro hunogona kuwanikwa muchigadzirwa.
- Asi nitrates dzinowedzerwa kubva muzvisikwa, sehupfu hwecelery, hadzina kudzorwa zvakanyanya. Dzimwe ongororo dzakaratidza kuti zvigadzirwa izvi "zvechisikigo" zvinogona kuva nema nitrates anosvika kagumi kupfuura ayo akagadzirwa nenzira dzechinyakare.
| Rudzi rwenyama yakagadziriswa (Chigadzirwa) | Muganho unobvumirwa zviri pamutemo (ppm - zvikamu pamiriyoni) |
|---|---|
| Bhekoni | 120 ppm (0.012%) |
| Soseji yakacheneswa | 156 ppm (0.0156%) |
| Ham kana pastrami yakacheneswa nemunyu | 200 ppm (0.02%) |
Saka mutongo wekupedzisira ndewei? Sodium nitrate ine njodzi zvechokwadi here?
Zvichibva paruzivo rwazvino, hazvisi pachena pakarepo kuti sodium nitrate pachayo ine njodzi. Sezvataona, chinhu chakakosha mumuviri wedu, kunyanya pahutano hwemwoyo.
Chinokonzera matambudziko acho hachisi ma nitrates pachawo, asi ndiko kwatinowana ma nitrates iwayo.
Funga nezveizvi sevhitamini. Mavhitamini akakosha kumiviri yedu. Asi kana ukaatora akawandisa, anogonawo kuva chepfu. Ndizvo zvazviri.
Nzira ine hutano yekuwana nitrates ndeyekubva mumiriwo, kwete kubva munyama dzakagadzirwa.
sei zvakadaro?
Pamwe chete nenitrates, miriwo inewo zvinovaka muviri zvakawanda, zvakaita se antioxidants senge vitamin C nefiber. Ma antioxidants aya anogona kudzivirira nitrates kuti dzisagadzire ma nitrosamines ane njodzi. Izvi zvinoreva kuti tinowana divi rakanaka re nitrates kubva mumiriwo chete.
Asi nyama dzakagadzirwa hadzina zvinovaka muviri izvi zvakachengeteka. Dzinewo munyu wakawanda uye mafuta asina kunaka. Saka dzine mukana mukuru wekugadzira nitrosamines.
Saka, pane kunetseka nezve nitrates, nyatsocherechedza kuti uri kudziwana kupi. Hazvina basa kudya nyama dzakagadzirwa dzimwe nguva, asi kuchenjera kusadziita chikamu chekudya kwako kwezuva nezuva.
Mharidzo Yekuenda Nayo Kumba
- Sodium nitrate inoshandiswa kuchengetedza nyama dzakagadzirwa, asi inobatsirawo miviri yedu kugadzira nitric oxide.
- MaNitrate anova nengozi chete kana akashanduka kuita nitrosamines, izvo zvinokonzera kenza. Izvi zvinowanzoitika kana ukadya nyama dzakagadzirwa.
- Mazita ekuti "Hapana Nitrate" anowanzo kuve nenitrate yechisikigo, senge celery powder. Dzimwe nguva anogona kunge aine nitrate yakawanda kupfuura zvigadzirwa zvemazuva ese.
- Nzira yakanakisisa uye yakachengeteka yekuwana nitrates ndeyekudya miriwo yakaita sespinachi nebeetroot. Ma antioxidants ari mazviri anodzivirira kuumbwa kwe nitrosamines.
- Nakidzwa nezvikafu zvakaita semasoseji nebhekoni dzimwe nguva, asi usazviite chikamu chekudya kwako kwezuva nezuva. Tarisa pakudya kwakaringana, kunyanya miriwo nemichero.
- Kana muine zvinokunetsai kana kusava nechokwadi nezvekudya kwenyu kana hutano hwemwoyo, garai muchibvunza chiremba wemhuri yenyu (chiremba) kuti akupei mazano.
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