I-Chlorine iyithuluzi elivame ukusetshenziswa embonini yokukhiqiza esanda kusikwa ukuvimbela ukungcoliswa okuphambanayo embhobhweni wokugeza. Kodwa umthamo omkhulu wezinto eziphilayo, njengoba kuvame emikhiqizweni esanda kusikwa, wehlisa ukusebenza kwe-chlorine ngokusebenzisa i-chlorine yamahhala. I-chlorine stabilizer entsha ebizwa ngokuthi i-SmartWash evela kwa-New Leaf Food Safety Solutions, e-Salinas, e-Calif., ingathuthukisa ukuphepha kokudla ngesikhathi sokugeza futhi kuthuthwe egumbini lokusika.
I-SmartWash iyisinzinzisi se-chlorine esenziwe ngezithako Ezivame Ukubonwa Njengezithako Eziphephile, futhi ithobela imihlahlandlela ye-FDA yokukhiqiza yokugeza. Kuthatha indawo ye-citric acid ukulungisa i-pH yesisombululo sokugeza ibe sezingeni elifiswayo, ngokuvamile elingu-3.5-5.5. Izinto zokusebenza zengezwa kalula emgqeni, futhi okwamanje ziqashwe emigqeni eluhlaza enamaqabunga e-Taylor Farms. INew Leaf kanye neTaylor Farms aphethwe yinkampani yabazali efanayo, iTaylor Fresh Foods.
Ubuchwepheshe bubonise imiphumela emihle, kodwa inkampani yayifuna ukuqinisekiswa okwengeziwe kwezinzuzo, ngakho-ke yathunyelwa kubacwaningi be-USDA. Isiphakamiso socwaningo sixhaswe ngezimali yiCentre for Production Safety eNyuvesi yaseCalifornia, uDavis, ukuze kuqhutshekwe nocwaningo nge-SmartWash ngabacwaningi u-Sunny Luo, u-Xiangwu Nou, u-Patricia Milner no-Daniel Shelton e-USDA's Environmental Microbial and Food Safety Laboratory, e-Beltsville, Md.
Ucwaningo lubheke ukusetshenziswa kwe-SmartWash (ebizwa nge-T-128 ocwaningweni) kujusi ye-ulethisi ngamanani ahlukahlukene kanye nasezixazululweni zokugeza eziqukethe inhlabathi. Ekugcineni, i-SmartWash inciphise kakhulu ukuwohloka kwe-chlorine yamahhala uma kuqhathaniswa nokulawula. Ukusebenza kahle kwesixazululo se-stabilizer bekungcono ngenhlabathi yobumba kunomhlaba oyisihlabathi, kodwa kokubili bekungcono kunokulawula.
I-stabilizer yehlisa i-pH yesisombululo sokugeza, kodwa abacwaningi abatholanga monakalo ophawulekayo ku-ulethisi osetshenziswe ezivivinyweni.
"Ngokujwayelekile, ithatha indawo ye-asidi futhi ingasetshenziswa ukulungisa i-pH yesisombululo futhi ingasetshenziswa ukunciphisa ukuncipha kwe-chlorine yamahhala esixazululweni," kusho uPatricia Milner, isazi se-microbiologist esicwaninga nge-USDA.
Kube nezinzuzo ezengeziwe ze-bacteriocidal kubuchwepheshe be-SmartWash, kusho uMilner. Kumaphesenti angu-2.5, kwakukhona ukufa okuphawulekayo kwamaseli e-pathogen ngemva kwemizuzu engu-2-10 ekuxazululeni. Lapho ijusi ye-ulethisi yengezwa esixazululweni sokugeza, kanye ne-ulethisi efakwe i-salmonella kanye nezinhlobo ezimbili ze-E. coli, kwakukhona amangqamuzana e-pathogenic ayesinda esicutshini nasemanzini ngamaphesenti angu-.05, kodwa ku-1% kwakukhona ukusinda izicubu kodwa hhayi kwisixazululo.
“Yize kusekhona ukuncipha kwe-chlorine, kukhona ukuncipha kwe-chlorine yamahhala esetshenziswa nge-T-128,” kusho uMilner.
Ekuhlolweni kokulawula, i-chlorine yamahhala yasetshenziswa ngokushesha lapho kukhona umthwalo wezinto eziphilayo. Lapho ukuhlushwa kwejusi ye-ulethisi kufinyelela kumaphesenti angu-1-2 esixazululweni, ukuhlushwa kwe-chlorine yamahhala kwehla ngaphansi kwezingxenye ezingu-.3 ngesigidi, futhi amangqamuzana e-pathogen akwazi ukuphila kulawo mazinga. Ngesisombululo se-SmartWash/T-128, ngisho nasezingeni eliphakeme kakhulu lejusi (amaphesenti angu-2), i-chlorine yamahhala yehla kuphela ku-.41 ppm, futhi awekho amaseli e-pathogen atholakele kulelo zinga.
Abacwaningi bahlela ezinye izifundo zokungcoliswa komoya ngezinga elikhulu, kodwa ngokusekelwe emiphumeleni yalolu cwaningo lokuqala, i-SmartWash/T-128 yehlisa kakhulu ukuncipha kwe-chlorine yamahhala, ikakhulukazi lapho kukhona inhlabathi, futhi ngezinga elincane I-1% yejusi ye-ulethisi, kusho uMilner. Iphinde yehlise ukungcoliswa okuwela ulethisi ngokusinda kwe-E. coli O157:H7 kanye ne-salmonella typhimorium, kuyilapho ingenayo imiphumela emibi ku-ulethisi kusukela ku-pH encishisiwe yesisombululo sokugeza.