IBisphenol A: icashe kuphi?
Amabhodlela epulasitiki, amarisidi, iziqukathi zokudla, amathini, amathoyizi… IBisphenol A ikuyo yonke indawo ezungeze thina. I-European Food Safety Authority ihlose ukutadisha imiphumela enobuthi yalesi sakhi samakhemikhali, esingapheli ukukhuluma ngaso…
I-Bisphenol A iyimolekyuli esetshenziselwa ukwenziwa kwama-resins amaningi epulasitiki. Itholakala ikakhulukazi ngaphakathi kwamanye amathini, iziqukathi zokudla, nakumaresidi. Ngo-2008, kwavinjelwa ukwenziwa kwamabhodlela ezingane eCanada, kwase kuba seFrance eminyakeni emibili kamuva. Ngemuva kwalokho kusolwa ukuthi kunemiphumela eyingozi empilweni, noma ngabe ngamanani aphansi kakhulu.
Ukuphazamiseka kwe-endocrine
Eminye imisebenzi yomzimba, njengokukhula noma ukukhula, ilawulwa yizithunywa zamakhemikhali ezibizwa ngama "hormone". Zifihlwa ngokuya ngezidingo zomzimba, ukuguqula ukusebenza kwesitho. Ihomoni ngayinye ibophezela kwisamukeli esithile, njengokhiye ngamunye uhambelana nokukhiya. Kodwa-ke, ama-molecule we-Bisphenol A alingisa i-hormone yemvelo, futhi aphumelele ekuzihlanganiseni ne-receptor yawo yeselula. Isenzo saso singaphansi kwama-hormone angempela, kodwa njengoba sikhona kakhulu endaweni yethu (cishe amathani ayizigidi ezingu-3 akhiqizwa unyaka ngamunye emhlabeni), umphumela emvelweni ungokoqobo.
I-Bisphenol A kusolwa ukuthi ibandakanyeka ezinhlobonhlobo zomdlavuza, ukukhubazeka kokuzala, isifo sikashukela kanye nokukhuluphala. Okubaluleke kakhulu, kungaba yimbangela yokuphazamiseka okukhulu kohlelo lwe-endocrine ezinganeni, okudala ukuthomba ngaphambi kwesikhathi emantombazaneni kanye nokwehla kokuzala kwabafana.
Iseluleko esiwusizo
IBisphenol A inokubaluleka kokukwazi ukuzikhipha kuplastiki ngokuzenzakalela ukuze ihlangane nokudla. Lesi sakhiwo siphindaphindwa ngezinga lokushisa eliphezulu. Amabhodlela amanzi akhanyiswe yilanga eliqondile, amathini angangeni emoyeni afudunyezwa ku-microwave noma kumathini emgqonyeni we-bain-marie: wonke akhipha izinhlayiya ezincane ezizongenwa yizinto eziphilayo.
Ukugwema lokhu, vele uhlole iziqukathi zakho zepulasitiki. Uphawu "lokusebenzisa kabusha" luhlala luhambisana nenombolo. Izinombolo 1 (ziqukethe ama-phthalates), 3 no-6 (ezingakhipha i-styrene ne-vinyl chloride) no-7 (polycarbonate) kufanele kugwenywe. Gcina kuphela iziqukathi ezinamakhodi alandelayo: 2 noma i-HDPE, i-4 noma i-LDPE, ne-5 noma i-PP (i-polypropylene). Kuzo zonke izimo, kufanele ugweme ukushisa ukudla ezitsheni zepulasitiki: qaphela izimbiza ezincane ku-bain-marie noma ku-microwave!
Amarisidi ayenziwa kancane futhi kancane ngale ngxenye. Ukuze uqiniseke, hlola ukuthi inamagama athi “guaranteed bisphenol A free” ngemuva.