I-Nitrosamine ingelinye lamagciwane amathathu aziwa kakhulu emhlabeni, amanye amabili ama-aflatoxin kanye ne-benzo[a]pyrene.I-nitrosamine yenziwa i-nitrite kanye ne-amine yesibili emaprotheni futhi isakazwa kabanzi endalweni.Okuqukethwe kwe-nitrosamine ezinhlanzini ezinosawoti, ama-shrimps omisiwe, ubhiya, ubhekeni kanye nesoseji kuphezulu.Isikhathi eside sokubeka isikhathi sokugcwalisa inyama nemifino nakho kungakhiqiza i-nitrite. .I-Nitrite ne-nitrate usawoti ovamile wezinto ezingaphili ekudleni kwansuku zonke nasemanzini okuphuza.Ngokuvamile kunenkolelo yokuthi ukuthatha lezi zinto ngokweqile kungase kubangele i-methemoglobinemia futhi kukhiqize ama-nitrosamine e-carcinogenic emzimbeni.I-Nitrate ne-nitrite yizinto ezingcolisa i-ionic ku-GB 2762-2017 ebizwa ngokuthi "I-National Food Safety Standard -Umkhawulo wokungcola ekudleni".I-GB 5009.33-2016 ebizwa ngokuthi "Amazinga Kazwelonke Okuphepha Kokudla Wokunqunywa Kwe-Nitrite ne-Nitrate Ekudleni" iwukumisa ukunqunywa kwalezi zinto ezimbili, kanye ne-ion chromatography njengendlela yokuqala ifakiwe esilinganisweni.
Amasampuli enziwa kusengaphambili ngokuya nge-GB/T 5009.33, futhi ngemva kokuna kwamaprotheni nokususwa kwamafutha, amasampuli akhishwa futhi ahlanzwe ngezindlela ezihambisanayo.Isebenzisa i-CIC-D160 ion chromatograph ,ikholomu ye-anion ye-SH-AC-5, 10.0 mM NaOH eluent kanye nendlela ye-bipolar pulse conductance,ngaphansi kwezimo ezinconyiwe zechromatographic, i-chromatogram imi kanje.
Isikhathi sokuthumela: Apr-18-2023