Nitrosamine yog ib qho ntawm peb cov kab mob carcinogens tshaj plaws hauv ntiaj teb, ob qho tib si yog aflatoxins thiab benzo [a]pyrene.Nitrosamine yog tsim los ntawm nitrite thiab lwm yam amine nyob rau hauv cov protein thiab yog dav faib nyob rau hauv cov xwm.Cov ntsiab lus ntawm nitrosamine nyob rau hauv salted ntses, qhuav cws, npias, nqaij npuas kib thiab hnyuv ntxwm yog siab.Thiab ntev tso lub sij hawm rau sau nrog nqaij thiab zaub kuj tsim nitrite. .Nitrite thiab nitrate yog cov ntsev inorganic nyob rau niaj hnub noj thiab haus dej.Nws yog feem ntau ntseeg hais tias kev noj ntau dhau ntawm cov tshuaj no yuav ua rau methemoglobinemia thiab tsim carcinogenic nitrosamines hauv lub cev.Nitrate thiab nitrite yog cov pa phem ionic hauv GB 2762-2017 hu ua "National Food Safety Standard -Limit of pollutants in food".GB 5009.33-2016 lub npe hu ua "National Food Safety Standards for the Determination of Nitrite and Nitrate in Food" yog tus qauv kev txiav txim siab ntawm ob yam khoom no, thiab ion chromatography raws li thawj txoj kev suav nrog hauv tus qauv.
Cov qauv yog pretreated raws li GB / T 5009.33, thiab tom qab cov protein los nag thiab rog tshem tawm, cov qauv raug muab rho tawm thiab huv si los ntawm cov txheej txheem sib xws.Siv CIC-D160 ion chromatograph, SH-AC-5 anion kem, 10.0 mM NaOH eluent thiab bipolar pulse conductance txoj kev, raws li kev pom zoo chromatographic mob, chromatogram yog raws li nram no.
Lub sij hawm xa tuaj: Plaub Hlis-18-2023