Iyini i-Vacuum Packaging

I-vacuum packaging, eyaziwa nangokuthi i-decompression packaging, iwukukhipha wonke umoya esitsheni sokupakisha bese uyivala ukuze kugcinwe izinga eliphezulu lokuwohloka esikhwameni. Ukushoda komoya kufana nomphumela we-oksijeni ephansi, ukuze ama-microorganisms angabi nezimo zokuphila, ukuze azuze ukudla okusha futhi angabi nasifo. inhloso yokwenzeka. Izicelo zihlanganisa ukupakishwa kwe-vacuum ezikhwameni zepulasitiki, ukupakishwa kwe-aluminium foil, i-glassware, ipulasitiki kanye nokupakishwa kwayo okuhlanganisiwe, njll. Izinto zokupakisha zingakhethwa ngokohlobo lwezinto. Njengoba izithelo ziwukudla okusha, zisaphefumula, futhi izinga eliphezulu le-hypoxia lizobangela izifo zomzimba. Ngakho-ke, ukupakishwa kwe-vacuum akusetshenziselwa izithelo.

Umqondo kanye nomsebenzi

I-vacuum packaging iphakethe elivikela imikhiqizo ekungcoleni kwemvelo futhi andise isikhathi seshelufu sokudla, esingathuthukisa inani kanye nekhwalithi yemikhiqizo. Ubuchwepheshe bokupakisha i-vacuum baqala ngawo-1940s. Njengoba i-polyester ne-polyethylene amafilimu epulasitiki asetshenziswa ngempumelelo ekufakweni kwempahla ngo-1950, imishini yokufaka i-vacuum ithuthuke ngokushesha.

Emkhakheni wempilo nomsebenzi wabantu, zonke izinhlobo zokupakishwa kwe-vacuum zepulasitiki zingatholakala yonke indawo. Okungasindi, okungangenisi umoya, ukugcinwa okusha, ukunqanda ukugqwala, kanye nokugqwala kwepulasitiki okuvala ukugqwala kuhlanganisa izinkambu eziningi kusukela ekudleni kuye kwezokwelapha, izingubo ezilukiweyo, kusukela ekukhiqizeni umkhiqizo okunembayo kuya ezimbonini ezicubungula insimbi namalabhorethri. Ukusetshenziswa okubanzi okwandayo kokupakishwa kwe-vacuum yepulasitiki kukhuthaze ukuthuthukiswa kwemishini yokufaka i-vacuum yepulasitiki futhi kubeka phambili izidingo eziphakeme kubo.

Indlela yokupakisha i-vacuum: inhloso ukunciphisa okuqukethwe komoyampilo ephaketheni, ukuvimbela isikhunta kanye nokuwohloka kokudla okupakishiwe, ukugcina umbala kanye nephunga elimnandi lokudla, nokwandisa impilo yeshalofu.

Umsebenzi oyinhloko wokupakishwa kwe-vacuum ukukhipha umoya-mpilo ukusiza ukuvimbela ukudla ukuthi kungonakali. Umgomo ulula uma kuqhathaniswa, ngoba ukubola kokudla kubangelwa ikakhulukazi imisebenzi yezilwanyana ezincane, futhi ukusinda kwama-microorganisms amaningi (njengesikhunta nemvubelo) kudinga umoya-mpilo. Yebo, futhi ukupakishwa kwe-vacuum kusebenzisa lesi simiso ukukhipha umoya-mpilo endaweni Isikhwama Sokupakisha namaseli okudla, ukuze izinto ezincane zilahlekelwe "indawo yokusinda". Ukuhlola kufakazele ukuthi: lapho ukugxiliswa komoyampilo esikhwameni sokupakisha kungu-≤1%, ukukhula nesivinini sokukhiqiza sama-microorganisms sizokwehla kakhulu, futhi lapho ukugxiliswa komoyampilo kungu-≤0.5%, ama-microorganisms amaningi azovinjelwa futhi ayeke ukuzala. (Qaphela: Ukufakwa kwe-vacuum akukwazi ukuvimbela ukukhula kwebhaktheriya ye-anaerobic kanye nokuwohloka kokudla kanye nokuguquka kombala okubangelwa ukusabela kwe-enzyme, ngakho-ke kudinga ukuhlanganiswa nezinye izindlela ezisizayo, njengokuqandisa, ukubanda okusheshayo, ukuphelelwa amanzi emzimbeni, ukuvala izinga lokushisa eliphezulu, ukuvala inzalo ngemisebe, ukuvala inzalo ku-microwave, okufakwe emanzini anosawoti njll.)

Ngaphezu kokuvimbela ukukhula nokukhiqizwa kabusha kwama-microorganisms, i-vacuum deoxygenation inomunye umsebenzi obalulekile wokuvimbela i-oxidation yokudla. Ngenxa yokuthi ukudla okunamafutha kuqukethe isamba esikhulu samafutha e-unsaturated fatty acids, akhishwa umoya-mpilo, okwenza ukudla kunambitheke futhi konakale. Ngaphezu kwalokho, i-oxidation nayo yenza ukudla Ukulahlekelwa amavithamini A no-C, izinto ezingazinzile embala wokudla zithinteka umoya-mpilo, okwenza umbala ube mnyama. Ngakho-ke, ukususwa komoya-mpilo kungavimbela ngokuphumelelayo ukudla ekuwohlokeni futhi kugcine umbala, iphunga, ukunambitheka kanye nenani lokudla okunempilo.

Umsebenzi oyinhloko wokupakisha okugcwele umoya we-vacuum akuwona nje umsebenzi wokulondoloza umoya-mpilo, kodwa futhi nomsebenzi wokulwa nokucindezela, ukuvimbela umoya nokugcina okusha. Ingakwazi ukugcina ngokuphumelelayo umbala wokuqala, iphunga, ukunambitheka, ukuma kanye nekhwalithi yokudla isikhathi eside. umsoco. Ngaphezu kwalokho, ukudla okuningi akufanelekile ukupakishwa kwe-vacuum kodwa kufanele kufakwe i-vacuum inflation. Okufana nokudla okucwebezelayo nokuntekenteke, ukudla okulula ukukuhlanganisa, ukudla okulula ukukhubaza nokulahlekelwa uwoyela, ukudla okunamaphethelo acijile noma ukuqina okuphezulu okuzobhoboza isikhwama sokupakisha, njll. Ngemuva kokuthi ukudla kugcwele i-vacuum-packed, ingcindezi yokwehla kwamandla emali ngaphakathi kwesikhwama sokupakisha inamandla kunokucindezela komkhathi ochotshoziwe ngaphandle kwepakethe, okuyinto engakwazi ukuvimbela isikhwama sokugoqa ngaphandle kwephakethe ngaphansi kwengcindezi ngaphandle kokuthinta ukubukeka kanye nomhlobiso wokuphrinta wesikhwama sokupakisha.

Iphakheji egcwele umoya we-vacuum igcwele i-nitrogen, i-carbon dioxide, i-oxygen gas eyodwa noma ingxube yamagesi amabili noma amathathu ngemva kokuvala. Igesi ye-nitrogen iyigesi engasebenzi, esebenza njengokugcwalisa ukugcina ukucindezela okuhle ngaphakathi kwesikhwama ukuvimbela umoya ongaphandle kwesikhwama ukuthi ungangeni esikhwameni futhi uvikele ukudla. I-nitrogen dioxide ingancibilika kalula emafutheni noma emanzini, futhi i-carbonic acid ekhanyayo ekhiqizwa yilokhu kuncibilika ivimbela ama-mircobial afana nesikhunta kanye nama-bacterium abolayo. I-oxygen yayo ingavimbela ukukhula nokukhiqizwa kabusha kwebhaktheriya ye-anaerobic, igcine izithelo nemifino kuhlanzekile futhi kunemibala, futhi ukugcwala okuphezulu komoyampilo kungagcina inyama entsha ibomvu ngokugqamile. Ukusha kwezithelo nemifino akulahli umsoco.

Ububanzi besicelo

1. Imikhiqizo ephulukisiwe: isoseji, i-ham, ubhekeni, idada elinosawoti, njll.

2. Imifino eqoshiwe: lwesinaphi esifakwe emanzini anosawoti, isithombo esomisiwe, i-kohlrabi, i-kimchi, njll.

3. Imikhiqizo ye-soy: i-tofu eyomile, inkukhu yemifino, ubhontshisi onamabhontshisi, njll.

4. Imikhiqizo yokudla okuphekiwe: inkukhu ethosiwe, idada eligazingiwe, inyama yenkomo enososo, ukudla okuthosiwe, njll.

5. Ukudla okulula: irayisi, ama-noodle amanzi asheshayo, imifino ephekiwe, njll.

6. Amathini athambile: i-bamboo ihlumela emanzini ahlanzekile, izithelo kusiraphu, iphalishi lamagugu ayisishiyagalombili, njll.