Kubwera kwa chilimwe, mitundu yonse ya zakumwa mu nyengo yogulitsa, ogula ambiri akufunsa: ndi botolo la chakumwa liti lomwe ndi lotetezeka kwambiri? Kodi zitini zonse zili ndi BPA?
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Mlembi wamkulu wa International Food Packaging Association, katswiri woteteza zachilengedwe a Dong Jinshi adauza atolankhani kuti pulasitiki ya polycarbonate yokhala ndi bisphenol A ili ndi zoyera, zosavuta kuthyola ndi zina. Opanga amagwiritsa ntchito kupanga zinthu zosiyanasiyana, monga pulasitiki, mabotolo amadzi apulasitiki, mabotolo a ana, zitini zokhwasula-khwasula, ndi zina zotero. Ma epoxy resins okhala ndi bisphenol A amagwiritsidwa ntchito makamaka mu zokutira zamkati za zakudya ndi zakumwa monga zitini za chakudya ndi zitini. Chifukwa chomwe bokosi lolongedza la zitini zachitsulo ndi zitini za aluminiyamu lili ndi bisphenol A ndikuti bisphenol A imakhala ndi anti-corrosion effect ndipo imatha kuteteza mpweya ndi tizilombo toyambitsa matenda kuti tisalowe mu can.
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Dong Jinshi akukumbutsa, pakali pano muli bisphenol A osati zotayidwa akhoza kola, ndi chitsulo akhoza,aluminiyumu akhoza kulongedza katunduasanu ndi atatu chuma poruel, zipatso zamzitini ndi zina zotero mulinso bisphenol A. Komabe, Dong Jinshi ananenanso kuti izi sizikutanthauza kuti zitini zonse muli BPA, zitini zina panopa zopangidwa pulasitiki, malinga ngati iwo sanapangidwe ndi PC. pulasitiki, alibe BPA.

Chiyambi cha Chemistry
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Bisphenol A, dzina lasayansi la 2, 2-di (4-hydroxyphenyl) propane, ndi chinthu chofunikira kwambiri pakupanga mankhwala, phenol ndi acetone zofunika zochokera ku bisphenol A molecular space filling model zamoyo, zomwe zimagwiritsidwa ntchito makamaka popanga polycarbonate, epoxy. utomoni, polysulfone utomoni, polyphenyl etha utomoni, unsaturated polyester utomoni ndi zipangizo polima. Itha kugwiritsidwanso ntchito popanga plasticizer, retardant flame, antioxidant, heat stabilizer, rabara antioxidant, mankhwala ophera tizilombo, utoto ndi zinthu zina zabwino zamankhwala.
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Deta ikuwonetsa kuti bisphenol A ndi mankhwala oopsa kwambiri. Mayesero a zinyama apeza kuti bisphenol A imakhala ndi zotsatira zotsanzira estrogen, ngakhale mlingo uli wochepa kwambiri, ukhoza kupangitsa kuti nyamayo ipange kusasitsa kwachikazi koyambirira, kuchepa kwa umuna, kukula kwa prostate ndi zotsatira zina. Komanso, zasonyeza kuti bisphenol A ali ena embryonic kawopsedwe ndi teratogenicity, amene akhoza kwambiri kuonjezera zochitika za khansa yamchiberekero, khansa ya prostate, khansa ya m'magazi ndi khansa zina nyama.

Momwe mungasankhire zakumwa zam'chitini zomwe si bisphenol A
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Msika wa bisphenol A sunathe, ndipo kuopsa kwa bisphenol A kungakhalepo. Ndiye, ndi paketi iti yomwe ili yotetezeka kwambiri pamsika? Momwe mungadziwire zinthu zapulasitiki zomwe zili ndi bisphenol A?
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Posankha chakumwa cham'chitini, ndikofunikira kwambiri kuwerenga manambala omwe ali mu chizindikiro cha katatu pansi pa botolo la pulasitiki. Chifukwa nambala iliyonse imayimira zinthu zapulasitiki, zida zosiyanasiyana, magwiridwe antchito, mikhalidwe yogwiritsira ntchito motetezeka ndizosiyananso.
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Malinga ndi muyezo wadziko lonse, "1" imayimira PET (polyethylene terephthalate), yomwe imagwiritsidwa ntchito m'mabotolo amadzi amchere ndi mabotolo akumwa mowa wa carbonated. Kutentha kugonjetsedwa ndi 70 ℃, kokha kwa zakumwa zoziziritsa kukhosi kapena zakumwa zozizira, kutentha kwamadzimadzi kumakhala kosavuta kupindika, kugwiritsa ntchito nthawi yayitali kumatulutsa mpweya woipa; "3" imayimira PVC (7810,15.00,0.19%) (polyvinyl chloride), yomwe singagwiritsidwe ntchito popanga chakudya; "4" amaimira LDPE (otsika kachulukidwe polyethylene), ntchito filimu chakudya, filimu pulasitiki, etc., pamene akukumana 110 ℃, padzakhala otentha kusungunuka chodabwitsa, kotero musanagwiritse ntchito uvuni mayikirowevu, onetsetsani kuchotsa chakudya chakudya filimu. choyamba; "5" imayimira PP(polypropylene), yomwe imagwiritsidwa ntchito m'mabokosi a nkhomaliro a mayikirowevu ndipo imatha kutenthedwa; "6" imayimira PS(polystyrene), yomwe imagwiritsidwa ntchito popanga mbale za mabokosi a Zakudyazi pompopompo ndi mabokosi azakudya zofulumira, koma singatenthetsedwe mu uvuni wa microwave, kapenanso kugwiritsidwa ntchito kuyika zinthu za asidi ndi zamchere; "7" imayimira polycarbonate (PC) ndi mitundu ina, zomwe zikutanthauza kuti ngati nambala ya makona atatu ndi 7, iyenera kukhala ndi BPA.

Ndife aaluminiyamu akhozakupanga amagulitsa kunja kwa zaka zoposa 15, zaka zambiri zotayidwa akhoza kupanga zinachitikira, ife kulabadira chitetezo chakudya, chifukwa zotayidwa ❖ kuyanika, ntchito zonse za mkati ❖ kuyanika zipangizo mogwirizana ndi mfundo za dziko, kuonetsetsa chitetezo, kuwonjezera, ifenso. pangaBPA yaulere ya aluminiyamu imatha, kulandira makasitomala ochokera m'mayiko onse kuti abwere kudzakambirana