Phenomenon Ntawm Cov Laus Cij Thiab Nws Cov Lus Cuam Tshuam
Sep 03, 2020
(5) Qhov kub thiab txias
Ntau yam tshwm sim rau kev laus muaj feem xyuam nrog qhov kub thiab txias. Tus nqi ntawm cov ntaub so ntswg sab hauv lub cev yog qhov nrawm tshaj plaws ntawm qhov kub tsawg ntawm -6.7 ℃ ～ 10 ℃ (20 ℉ ℉ 50 ℉), thiab qhov kub siab tshaj 35 ℃ (95 ℉) feem ntau cuam tshuam rau xim thiab tsw, yog li ntawd 21.1 ～ ～ 35 ℃ (70 ～ ～ 95 ℉) yog qhov zoo tshaj cia ntim rau lub khob cij. Ua dej khov rau ntawm qhov txias txias ntawm -32 ° C thiab -28.9 ° C (0 ° F ~ -20 ° F). Tom qab hnub ntawm khov, tag nrho cov cuam tshuam cuam tshuam rau kev laus tu ncua. Cov txheej txheem sab hauv ntawm pob cij (cov nqaij ua mov ci) tuaj yeem muag ntawm 48.9 ° C (120 ° F) lossis siab dua thaum nws yog tawv tawv, tab sis nws yuav ua tsis tau zoo tom qab rov ua dua 2 txog 3 zaug.
(6) Emulsifier
Txij li thaum emulsifiers tuaj yeem nce qhob cij softness, lawv raug siv los ua cov neeg ua hauj lwm tiv thaiv kev laus. Cov emulsifier yuav txuas nrog amylose hauv cov hmoov txhuv nplej siab los tiv thaiv cov amylose los ntawm kev tso tawm kom tawm, yog li nws yuav tsis nce lub zog ntawm cov nqaij hauv cov mov thaum nws cia li ci. Ntawm qhov tod tes, cov emulsifier tsis muaj tib yam ntawm rubulan, yog li nws tseem yuav ua rau cov tawv nqaij sab hauv thaum lub sij hawm cia, thiab yuav tsis qeeb cov dej txav ntawm cov mov los nqaij rau daim tawv nqaij sab nraud, yog li ntawd emulsifier tuaj yeem siv ua Lub khob noom cookie txhim kho thiab ua kom tawv nqaij ua kom zoo, ntawm chav kawm, kuj yuav tsum mloog zoo rau cov tsw phem thiab saj ntawm lub khob cij nqa los ntawm tshuaj emulsifiers.
(7) Enzyme
Enzyme khoom kuj tseem siv los ua tshuaj tiv thaiv kev laus. Txij li thaum cov enzymes qeeb rau kev txav ntawm dej lwg me me, nws tuaj yeem ua kom qeeb ntawm cov tawv nqaij hauv lub cev thaum khaws cia. Nyob rau hauv kev coj ua thiab ci, cov hmoov txhuv nplej siab yuav cuam tshuam los ntawm cov enzymes, yog li thaum lub sijhawm khaws cia, nws yuav tsis nyuaj li cov hmoov txhuv nplej siab kev laus. Lub thermal stability thiab hom kev txiav txim ntawm cov enzyme yog qhov tseem ceeb heev. Pullulan tuaj yeem tiv thaiv kev laus tom qab ua yeeb yam los ntawm qhov enzyme, tab sis nws yuav tsis ua rau sab hauv cov nqaij ntawm cov qhob cij nplaum los yog nyuaj rau lis thaum txiav rau hauv hlais. Feem ntau hais lus, cov khoom siv enzyme tuaj yeem daws cov teeb meem kev laus ntawm qhob cij ntau dua li cov tshuaj emulsifiers.