Chii chinonzi Vacuum Packaging

Vacuum packaging, inozivikanwawo sedecompression packaging, ndeyekubvisa mweya wese mumudziyo wekurongedza uye kuisimbisa kuti ichengetedze yakakwira decompression mubhegi. Kushaikwa kwemhepo kwakaenzana nekuita kweokisijeni yakaderera, kuitira kuti ma microorganisms asava nemamiriro ekurarama, kuitira kuti awane chikafu chitsva uye pasina chirwere. chinangwa chekuitika. Zvikumbiro zvinosanganisira vacuum packaging mumabhegi epurasitiki, aluminium foil packaging, glassware, plastiki uye yayo composite zvinhu packaging, etc. Packaging zvinhu zvinogona kusarudzwa maererano nemhando yezvinhu. Sezvo michero iri chikafu chitsva, ichiri kufema, uye huwandu hwepamusoro hwe hypoxia huchakonzera zvirwere zvemuviri. Naizvozvo, vacuum packaging haishandiswe muchero.

Pfungwa uye basa

Vacuum packaging ipakiti inochengetedza zvigadzirwa kubva mukusvibiswa kwezvakatipoteredza uye inowedzera hupenyu hwesherufu yechikafu, iyo inogona kuvandudza kukosha uye kunaka kwezvigadzirwa. Vacuum packaging tekinoroji yakatanga muma1940s. Sezvo mafirimu epurasitiki epolyester nepolyethylene akashandiswa zvakabudirira pakurongedza zvinhu muna 1950, michina yekuisa vacuum yakagadzira nekukurumidza.

Mumunda wehupenyu hwevanhu nebasa, marudzi ese epurasitiki vacuum packaging anogona kuwanikwa kwese kwese. Yakareruka, isina mhepo, inochengetedza nyowani, anti-corrosion, uye anti-ngura epurasitiki vacuum packaging inovhara minda yakawanda kubva pachikafu kuenda kumushonga, hembe dzakarukwa, kubva kune chaiyo kugadzira chigadzirwa kusvika kune simbi kugadzira zvidyarwa nemarabhoritari. Iko kuwedzera kwakafara kushandiswa kwepurasitiki vacuum packaging kwakasimudzira kugadzirwa kwepurasitiki vacuum yekurongedza michina uye kuisa mberi kwepamusoro zvinodiwa kwavari.

Iyo nzira yekuputira vacuum: chinangwa ndechekudzikisa iyo okisijeni mupakeji, kudzivirira mold uye kuparara kwechikafu chakaputirwa, kuchengetedza ruvara uye kunhuhwirira kwechikafu, uye kuwedzera hupenyu hwesherufu.

Basa guru rekuputira vacuum kubvisa oxygen kubatsira kudzivirira chikafu kubva pakuipa. Nheyo yacho iri nyore, nekuti kuparara kwechikafu kunonyanya kukonzerwa nemabasa ezvipembenene, uye kurarama kwevazhinji tupukanana (senge mold uye mbiriso) kunoda oxygen. Ehe, uye vacuum kurongedza kunoshandisa musimboti uyu kutora okisijeni mu Packaging Bag uye masero ezvokudya, kuitira kuti zvidiki-zvinhu zvirasikirwa ne "nzvimbo yekurarama". Miedzo yakaratidza kuti: kana iyo oxygen concentration mubhegi rekurongedza iri ≤1%, kukura uye kukurumidza kubereka kwema microorganisms kuchadonha zvakanyanya, uye kana iyo oxygen concentration iri ≤0.5%, ma microorganisms mazhinji anozodziviswa uye anomira kubereka. (Cherechedza: Vacuum packaging haigone kutadzisa kukura kweanaerobic bacteria uye kupera kwechikafu uye kushanduka kwemavara kunokonzerwa nekuita kwe enzyme, saka inoda kusanganiswa nedzimwe nzira dzekubatsira, senge firiji, kukurumidza kuomesa nechando, kupera simba kwemvura, kupisa-tembiricha sterilization, radiation sterilization, microwave sterilization, munyu wakasanganiswa nezvimwe.)

Mukuwedzera pakudzivisa kukura uye kubereka kwe microorganisms, vacuum deoxygenation ine rimwe basa rinokosha kudzivirira kudya oxidation. Nekuti chikafu chine mafuta chine huwandu hukuru hweunsaturated fatty acids, izvo zvinoiswa oxidized neokisijeni, zvichiita kuti chikafu chinakidze uye kuparara. Mukuwedzera, oxidation inoitawo chikafu Kurasikirwa kwevhitamini A uye C, zvinhu zvisina kugadzikana mukudya kwekudya zvinokanganiswa neokisijeni, zvichiita kuti ruvara ruve rima. Naizvozvo, kubviswa kweokisijeni kunogona kudzivirira chikafu kubva pakuipa uye kuchengetedza ruvara rwayo, kunhuhwirira, kuravira uye kukosha kwekudya.

Basa guru rekuputira mhepo yakazadzwa nemhepo haisi basa rekuchengetedza okisijeni chete, asiwo basa rekudzivirira-kudzvinyirira, kuvhara mhepo uye kuchengetedza kutsva. Inogona kunyatso kuchengetedza ruvara rwepakutanga, kunhuhwirira, kuravira, chimiro uye kunaka kwekudya kwenguva yakareba. kukosha kwekudya. Pamusoro pezvo, zvikafu zvakawanda hazvina kukodzera kurongedza vacuum asi zvinofanirwa kunge zvakazara ne vacuum inflation. Zvakadai sechikafu chekrispy uye chisina kusimba, chikafu chiri nyore kuunganidza, chikafu chiri nyore kukanganisa uye kurasikirwa nemafuta, chikafu chine mipendero yakapinza kana kuomarara kwakanyanya kunozobaya bhegi rekurongedza, etc. Mushure mekunge chikafu chavharwa, inflation inflation mukati mehomwe yekurongedza ine simba kupfuura iyo yemhepo yekumanikidza inopwanyiwa kunze kwechikafu, iyo inobudirira inogona kudzvanya kunze kwechikafu. pasi pekumanikidzwa pasina kukanganisa kutaridzika uye kudhinda kushongedzwa kwebhegi rekurongedza.

Vacuum inozadzwa nemhepo inoputirwa yakazadzwa nenitrogen, kabhoni dhaibhoni, oksijeni imwe gasi kana musanganiswa wemagasi maviri kana matatu mushure mekutsvaira. Iyo nitrogen gasi igesi inert, iyo inoshanda sekuzadza kuchengetedza kudzvanywa kwakanaka mukati mebhegi kudzivirira mhepo iri kunze kwebhegi kupinda muhomwe uye kudzivirira chikafu. Nitrogen dioxide inogona kunyungudutswa zviri nyore mumafuta kana mvura, uye chiedza checarbonic acid chinounzwa nekunyungudika uku chinodzora mamwe ma mircobials senge mold uye putrefactive bacteria. Okisijeni yaro inogona kutadzisa kukura uye kuberekana kwebhakitiriya reanaerobic, kuchengetedza michero nemiriwo zviri zvitsva uye zvine mavara, uye kuwanda kweokisijeni kunogona kuchengetedza nyama nyowani yakatsvuka. Iko kutsva kwemichero nemiriwo haisi kurasikirwa nekudya.

Chikamu chekushandisa

1. Zvigadzirwa zvakarapwa: soseji, ham, bhakoni, dhadha remunyu, nezvimwe.

2. Pickled miriwo: pickled mustard, radish yakaomeswa, kohlrabi, kimchi, nezvimwewo.

3. Zvigadzirwa zveSoy: tofu yakaomeswa, huku yemiriwo, bhinzi paste, nezvimwe.

4. Zvigadzirwa zvekudya zvakabikwa: huku yakakangwa, dhadha yakagochwa, nyama yemombe nemuto, chikafu chakakangwa, nezvimwe.

5. Zvokudya zviri nyore: mupunga, ma noodles emvura pakarepo, miriwo yakabikwa, nezvimwewo.

6. Makabati akapfava: bamboo anopfura mumvura yakachena, michero mune sirasi, masere-pfuma porridge, nezvimwewo.