Nyob zoo cov phooj ywg los ntawm kev lag luam khoom noj khoom haus, koj puas tau ntsib cov teeb meem no?
Koj puas tau hnov tias cov txiv ntoo thiab cov chips koj tsim yog mos thiab tsis crispy tsuas yog ob peb hnub tom qab xa mus rau lub tsev muag khoom?
Cov hmoov kas fes thiab cov nqaij qhuav tau ntim cov tshuaj tsw qab thaum lawv ntim. Tab sis tom qab muab tso rau ntawm lub txee rau ob lub lis piam, lawv cov aroma ploj lawm?
Dab tsi yog qhov kev txhawj xeeb ntau dua yog tias cov neeg siv khoom xa rov qab cov khoom, xa cov lus tsis txaus siab txog lub sijhawm luv luv, thiab lub koob npe nrov ntawm cov khoom lag luam maj mam deteriorates ... Lub ntim ntim tsis tuaj yeem tiv thaiv cov pa oxygen los ntawm kev nkag mus thiab tsis tuaj yeem tiv thaiv kev thauj mus los. Cov zaub mov hloov xim, oxidizes, sib tsoo, thiab cov pa tawm - txhua qhov teeb meem no yog "killer" rau kev muag khoom.Nitrogen- puv PE (polyethylene) cov ntim khoom sib xyaw tau tsim muaj tseeb los daws cov teeb meem no
Hauv cov ntsiab lus yooj yim, nws suav nrog kev qhia me me ntawm nitrogen rau hauv PE zaj duab xis los tsim kom muaj qhov ruaj khov thiab zoo li micro- pore qauv. Nws tsis zoo li inflating ib lub hnab; xwb, nws muab zaj duab xis nws tus kheej "gas tswj" muaj peev xwm - siab oxygen kuj thiab anti- compression, muab kev tiv thaiv dual.
Cov pa oxygen permeability ntawm nitrogen- puv PE yog ntau dua 50% qis dua li ntawm PE zoo tib yam. Cov pa oxygen tsis tuaj yeem nkag mus, yog li tiv thaiv cov roj spoilage, fading ntawm pigments, thiab ua kom cov khoom qhuav crispy. Kev sim tau pom tias lub sijhawm khaws cia ntawm cov txiv laum huab xeeb hauv nitrogen- ntim PE tau txuas ntxiv los ntawm 40% ntawm chav tsev kub!
Cov hnab ntim khoom tsoos tsoo hauv qab lub siab. Cov nitrogen- puv PE cov ntaub ntawv muaj cov qauv yooj yim dua thiab elasticity zoo. Txawm tias thaum stacked thiab compressed, lawv yuav tsis zoo li deform los yog pa pa - koj tsis tas yuav txhawj txog tig mus rau hauv "lub hnab ntim compression" thaum koj mus txog lub tsev muag khoom.
Nitrogen- puv PE tsis tas yuav tsum muaj cov ntawv txhuas ntxiv lossis EVOH txheej (cov ntaub ntawv muaj teeb meem siab). Ib qho - cov khoom siv tau yooj yim dua rau kev rov ua dua tshiab, ua raws li cov qauv ib puag ncig. Tsis tas li ntawd, cov nuj nqis them rov qab tau txais txiaj ntsig tuaj yeem pab koj txuag tau nyiaj ntau hauv ib xyoos.
Yog tias koj koom nrog hauv kev tsim cov khoom noj puffed, ci pastries, txiv ntoo khoom noj txom ncauj, kas fes thiab tshuaj yej, nws raug nquahu kom sim tam sim ntawd sim nitrogen gas PE ntim.Pib los ntawm kev sim ib pawg ntawm cov khoom nrov, sib piv cov crispness, aroma retention hnub ntawm PE zoo tib yam, thiab cov ntaub ntawv muag khoom yuav hais rau nws tus kheej.
Koj cov neeg siv khoom muaj nqis dab tsi? Lub suab nrov thaum qhib lub hnab, lossis kev ntseeg siab tias cov khoom tseem tshiab txawm tias tom qab ob lub lis piam cia? Nitrogen-coated PE yog tus yuam sij los pab koj kom tau txais kev ntseeg siab no.