Amayeza okubulala izinambuzane anokunceda amafama ukuba akhulise imveliso yokutya, anciphise ilahleko eninzi kwizityalo, ade athintele ukusasazeka kwezifo ezisasazwa zizinambuzane, kodwa ekubeni le michiza inokuthi ekugqibeleni ingene ekutyeni kwabantu, iqinisekisa ukuba ukhuseleko lwakho lubalulekile.Kwisibulali-zinambuzane esisetyenziswa ngokuqhelekileyo esibizwa ngokuba yi-glyphosate, abantu banexhala lokuba kukhuseleke kangakanani ukutya kunye nokuba enye yemveliso yakho ebizwa ngokuba yi-AMPA ikhuseleke kangakanani.Abaphandi kwiZiko leSizwe leMigangatho kunye neTekhnoloji (NIST) baphuhlisa izinto zokubhekisela ukuqhubela phambili umlinganiselo ochanekileyo we-glyphosate kunye ne-AMPA, ehlala ifumaneka kwi-oat foods.
I-Arhente yoKhuseleko lokusiNgqongileyo (EPA) ibeka ukunyamezela amanqanaba okubulala izitshabalalisi ekutyeni okusagqalwa njengekhuselekile ukutyiwa.Abavelisi bokutya bavavanya iimveliso zabo ukuqinisekisa ukuba bayayithobela imithetho ye-EPA.Nangona kunjalo, ukwenzela ukuba kuqinisekiswe ukuchaneka kweziphumo zokulinganisa, kufuneka basebenzise i-reference substance (RM) enomxholo owaziwayo we-glyphosate ukuthelekisa kunye nemveliso yabo.
Kwiimveliso ze-oatmeal okanye i-oatmeal-based based based baseds ezisebenzisa i-pesticides ezininzi, akukho zixhobo zokubhekisela ezingasetyenziselwa ukulinganisa i-glyphosate (isithako esisebenzayo kwimveliso yorhwebo Roundup).Nangona kunjalo, inani elincinci le-RM esekelwe kukutya lingasetyenziselwa ukulinganisa ezinye izitshabalalisi.Ukuphuhlisa i-glyphosate kunye nokuhlangabezana neemfuno ezikhawulezayo zabavelisi, abaphandi be-NIST baphucula indlela yokuvavanya ukuhlalutya i-glyphosate kwi-13 yeesampulu zokutya ezifumaneka ngokurhweba kwi-oat-based based food ukuchonga izinto zokubhekisela kumviwa.Bafumene i-glyphosate kuzo zonke iisampuli, kwaye i-AMPA (ifutshane kwi-amino methyl phosphonic acid) ifunyenwe kwisithathu kubo.
Kwiminyaka emininzi, i-glyphosate iye yaba yenye yezona zinambuzane zibalulekileyo e-United States nakwihlabathi.Ngokutsho kophando lwe-2016, kwi-2014 yodwa, iitoni ze-125,384 ze-glyphosate zisetyenziswe e-United States.Sisibulali zinambuzane, sisibulali zinambuzane, esisetyenziselwa ukutshabalalisa ukhula okanye izityalo eziyingozi eziyingozi kwizityalo.
Ngamanye amaxesha, inani leentsalela zezitshabalalisi ekutyeni lincinci kakhulu.Ngokubhekiselele kwi-glyphosate, inokuthi ihlelwe phantsi ibe yi-AMPA, kwaye inokushiywa kwiziqhamo, imifuno kunye neengqolowa.Impembelelo enokubakho ye-AMPA kwimpilo yabantu ayiqondwa kakuhle kwaye iseyindawo esebenzayo yophando.I-Glyphosate isetyenziswa ngokubanzi kwezinye iinkozo kunye neengqolowa, ezifana nebhali kunye nengqolowa, kodwa i-oats yimeko ekhethekileyo.
Umphandi we-NIST uJacolin Murray uthe: “I-oats yahlukile njengeenkozo.”"Sakhetha i-oats njengento yokuqala kuba abavelisi bokutya basebenzisa i-glyphosate njenge-desiccant ukomisa izityalo ngaphambi kokuvuna.I-oats ihlala iqulethe i-glyphosate eninzi.iPhosphine.”Izityalo ezomileyo zingenza ukuvunwa kwangethuba kwaye ziphucule ukufana kwezityalo.Ngokutsho kombhali-mbhali uJustine Cruz (uJustine Cruz), ngenxa yoluhlu olubanzi lokusetyenziswa kwe-glyphosate, i-glyphosate idla ngokufumaneka kumanqanaba aphezulu kunezinye izibulala-zinambuzane.
Iisampulu ze-oatmeal ezili-13 kuphononongo ziquka i-oatmeal, encinci ukuya kwi-oatmeal yesidlo sakusasa esenziwe kakhulu, kunye nomgubo we-oat ophuma kwiindlela eziqhelekileyo kunye neendlela zokulima eziphilayo.
Abaphandi basebenzise indlela ephuculweyo yokukhupha i-glyphosate kukutya okuqinileyo, kudityaniswe neendlela eziqhelekileyo ezibizwa ngokuba yi-liquid chromatography kunye ne-mass spectrometry, ukuhlalutya i-glyphosate kunye ne-AMPA kwiisampuli.Kwindlela yokuqala, isampuli eqinile iyachithwa kumxube we-liquid kwaye i-glyphosate isuswe ekudleni.Okulandelayo, kwi-chromatography yolwelo, i-glyphosate kunye ne-AMPA kwisampulu esicatshulwayo zihlukaniswe kwamanye amacandelo kwisampuli.Okokugqibela, i-mass spectrometer ilinganisa ubungakanani bokutshaja kwe-ion ukuchonga iikhompawundi ezahlukeneyo kwisampulu.
Iziphumo zabo zibonise ukuba iisampulu ze-cereal zesidlo sakusasa (26 ng ngegram) kunye neesampulu zomgubo we-oat eziphilayo (11 ng ngegram) zinezinga eliphantsi le-glyphosate.Inqanaba eliphezulu le-glyphosate (i-1,100 ng ngegram) ifunyenwe kwisampuli ye-oatmeal yesiqhelo.Umxholo we-AMPA kwi-oatmeal ephilayo kunye ne-oatmeal eqhelekileyo kunye neesampuli ezisekelwe kwi-oat ziphantsi kakhulu kumxholo we-glyphosate.
Imixholo yazo zonke i-glyphosate kunye ne-AMPA kwi-oatmeal kunye ne-oat-based grains ziphantsi kakhulu kwe-EPA yokunyamezela kwe-30 μg / g.UMurray uthe: "Elona nqanaba liphezulu le-glyphosate esililinganiseyo lalingaphantsi kwamaxesha angama-30 kunomda wolawulo."
Ngokusekelwe kwiziphumo zolu pho nonongo kunye neengxoxo zokuqala kunye nabachaphazelekayo abanomdla ekusebenziseni i-RM ye-oatmeal kunye ne-oat grains, abaphandi bafumanisa ukuba ukuphuhlisa amanqanaba aphantsi e-RM (50 ng ngegram) kunye namanqanaba aphezulu e-RM anokuba luncedo.Enye (500 nanograms ngegram).Ezi RM ziluncedo kwiilabhoratri zovavanyo lwezolimo kunye nokutya kunye nabavelisi bokutya, abafuna ukuvavanya iintsalela zezitshabalalisi kwizixhobo zabo ezikrwada kwaye bafuna umgangatho ochanekileyo wokuthelekisa nabo.