I-Silica, ikakhulukazi ngendlela yayo eyenziwe ngabantu futhi engahlanganisi, iyaziwa kabanzi njenge-ejenti yokudla ephephile futhi esebenza kahle yokuvimbela ukuminyana. Umsebenzi wayo oyinhloko ukuvimbela ukuminyana nokugcina imikhiqizo yokudla eyimpuphu igeleza kalula. I-European Food Safety Authority (EFSA) iye yahlola ngokucophelela i-silica, eyaziwa ngegama elithi E 551 emgomeni wezithako zokudla, futhi yaqinisekisa ukuphepha kwayo ukusetshenziswa embonini yokudla. Lesi sihloko sihluza izici eziyinhloko zendima ye-silica, ukuhlolwa kwayo kwezokuphepha, ukugunyazwa kwayo komlando, kanye nomthelela wayo emkhakheni wokudla, sinikeza amabhizinisi ngemininingwane ephelele ngalesi sithako esibalulekile.

Ngo-2018, i-EFSA yenza ukuhlolwa okuqinile kokuphepha kwe-silica eyenziwe ngamakhemikhali (E 551). Ukuhlola kugxile ezimpahleni zamakhemikhali ezithako, idatha yokubulala, nezinga lokub exposure phakathi kwezigaba ezahlukene zabathengi. I-EFSA iphumelele ukuthi ukusetshenziswa kwe-silica njengomkhiqizo wokuvikela ukungena akuhambisani nezinkinga zokuphepha ezingeni elivunyelwe njengamanje emikhiqizweni yokudla. Le miphumela ibisekelwe ebufakazini obukhulu besayensi, iqinisekisa ukuvikelwa kwabathengi nokuhambisana nemithetho ngaphakathi kwe-European Union. Umbono we-EFSA uqinisekisa abakhiqizi nabathengi ngokufanayo ngokuphepha kwe-silica uma isetshenziswa ngendlela efanele.

I-silica ye-amorphous eyenziweyo iyimpuphu encinci, engayiyo i-crystalline, ekwazi ukumunca umswakama ngempumelelo kwaye ivimbele ukuhlanganiswa kwezinto. Le misebenzi iyenza ilungele ukusetyenziswa ekutyeni okuyimpuphu njengobisi oluyimpuphu, izinongo, ukhilimu wekhofi, kunye nomxube wokubhaka. Indalo yayo engasebenziyo iqinisekisa ukuba ayisabelani ngokwemichiza nezithako zokutya, igcina umgangatho womkhiqizo kunye nobomi beshalofu. Ngaphezu koko, ukuguquguquka kwe-silica kudlulela ngaphaya kwezicelo zokutya ukuya kumalungiselelo emithi kunye nezithambiso, kubonisa ukusetyenziswa kwayo okubanzi ekugcineni ubuqotho bemikhiqizo.

Ukuhlolwa kwezokuphepha kwe-EFSA kwabandakanya ukuhlolwa okuthuthukisiwe kwe-toxicological, okuhlanganisa izifundo nge-absorption, distribution, metabolism, kanye nokukhipha (ADME) kwamaphilisi e-silica. Akukho imiphumela ye-genotoxic noma ye-carcinogenic eyabonwa, futhi i-silica yabonisa i-bioavailability ephansi yesistimu. Ukuhlolwa kwengozi kwafaka izilinganiso zokudla, kuqinisekisa ukuthi amazinga ajwayelekile okudla angaphansi kakhulu kwemikhawulo yokukhathazeka. Le ndlela ephelele igcizelela iphrofayili ephephile yengezo futhi isekela ukuvunywa kwayo okuqhubekayo ezinqubweni zokukhiqiza ukudla.

I-Silica isetshenziswe njengesengezo sokudla iminyaka eminingi, ngokuvunyelwa kokuqala okubuyela emuva maphakathi nekhulu lama-20. Ngokuhamba kwesikhathi, ukuthuthuka kwezindlela zokuhlaziya kuye kwavumela ukuhlolwa okunembayo kakhudlwana kwezokuphepha nokusebenza kwayo. Ukuvunyelwa okuqhubekayo nokusetshenziswa kabanzi yimboni yokudla kubonisa ukuzethemba okuqhubekayo kwezimiso kanye nezinzuzo ezisebenzayo. Abahlinzeki abafana no-Shandong Zhonglian Chemical Co., Ltd. badlala indima ebalulekile ngokuhlinzeka nge-silica esezingeni eliphezulu yokudla ehambisana namazinga aphezulu okuphepha omhlaba wonke, okuqinisa isimo esithembekile sesengezo.

Ochwepheshe bemboni bagcizelela ukuthi umbono omuhle we-EFSA nge-silica ugcwalisa kakhulu ukuzethemba kwabathengi ekuvikelekeni kokudla. Amandla okwengeza ukugcina ikhwalithi yomkhiqizo ngaphandle kokubeka engcupheni ukuphepha ayaziswa kakhulu abakhiqizi. Izinkampani ezifana no-Shandong Zhonglian Chemical Co., Ltd. zisebenzisa lesi sivumelwano somthetho ukwandisa ukufinyelela kwazo emakethe, zinikeza imikhiqizo ye-silica entsha nethembekile eyenzelwe imboni yokudla. Lokhu kuhlangana phakathi komthetho nemboni kuqinisekisa izixazululo eziphumelelayo zokuvimbela ukubambana ezihlangabezana nezidingo zabathengi eziguqukayo.

Ngokufingqiwe, i-silica eyenziwe ngokwenziwa (E 551) iyinto ephephile futhi ebalulekile yokuvimbela ukuminyana ekudleni, esekelwa ukuhlolwa okuphelele kwezokuphepha kwe-EFSA. Izici zayo ezihlukile zomzimba nokungathathi hlangothi kuyenza ibe yisengezo esihle kakhulu emikhiqizweni yokudla eyimpuphu, kuthuthukisa ikhwalithi nesikhathi sokugcina. Umlando omude wokugunyazwa ngemithetho, uhlangene nokusha okuqhubekayo kwezimboni okuvela kubaholi abanjengo-Shandong Zhonglian Chemical Co., Ltd., kuqinisekisa ukuthi i-silica izohlala iyisici esibalulekile ekwenziweni kokudla ngenkathi kugcinwa ukwethembeka kwabathengi.

#isilicium #ukuphepha kokudla #ukuphikisa ukubambana

Izithombe nemininingwane eningiliziwe yomkhiqizo ingatholakala ku-Izindaba kanyeIvidiyoamakhasi ewebhusayithi ye-Shandong Zhonglian Chemical Co., Ltd.