Nplej Pregelatinized Starchmuaj qhov muaj zog hygroscopicity thiab nyhav rau ncuav mog qab zib nyob rau hauv qhov chaw ntub dej, muaj kev pheej hmoo ntau dua li cov hmoov nplej nplej. Cov cuab yeej tam sim no yog los ntawm nws cov qauv hloov kho molecular. Cia tej yam kev mob thiab ambient humidity txiav txim qhov hnyav ntawm caking. Cov txheej txheem tsim, cov yam ntxwv ntawm cov hmoov txhuv nplej siab thiab kev tiv thaiv txoj hauv kev tau piav qhia hauv qab no.
Structurally, cov nplej hmoov nplej ib txwm muaj compact, tsis tu ncua granules nrog kaw qhov chaw thiab tsis tshua muaj hygroscopicity. After high-temperature gelatinization, drying and pulverization modification of Wheat Pregelatinized Starch, dense granular structures break down, molecular chains fully extend, internal pores increase and numerous hydrophilic polar groups appear on surfaces. Qhov tshwj xeeb ntawm thaj chaw nthuav dav zuj zus thiab noo noo adsorption muaj peev xwm txhim kho drastic. Thaum huab cua noo nce siab, cov pob khoom tsis zoo raug kaw los yog cov khoom tsis raug tso tawm, cov hmoov txhuv nplej siab absorbs noo noo sai. Cov khoom saum npoo soften tom qab dej uptake, adheres rau ib leeg thiab maj mam tsim lumps.
Ob theem ntawm caking tuaj yeem paub qhov txawv: lub teeb thiab hnyav. Lub teeb ci feem ntau tshwm sim los ntawm luv luv -lub sij hawm ya raws qhov chaw. Tsuas yog cov hmoov av agglomerates thaum cov khoom sab hauv tseem qhuav. Lumps yog xoob thiab tuaj yeem tawg los ntawm kev nplawm lossis sieving. Hydration, thickening thiab binding kev ua tau zoo nyob twj ywm zoo heev rau kev siv ntau lawm. Kev hnyav hnyav tshwm sim thaum cov khoom raug muab khaws cia rau lub sijhawm ntev, muab tso rau hauv siab - cov chaw cia khoom lossis cov pob khoom tawg thiab tso dej nkag. Hmoov absorbs noo noo kom huv si thiab hardens rau hauv cov khoom chunks. Cov qauv molecular colloidal puas lawm, ua rau qeeb qeeb thiab txo qis viscosity. Hard undissolvable cores feem ntau tshwm sim, ua rau tag nrho cov tseem ceeb functions thiab rendering cov khoom siv unusable.
Muaj ntau yam cuam tshuam. Ambient humidity ua lub luag haujlwm tseem ceeb; caking probability nce siab thaum txheeb ze av noo tshaj 65%. Cov txheej txheem khaws cia suav nrog kev tso chaw qhib, stacking tiv thaiv phab ntsa lossis hauv pem teb thiab khaws cia hauv cov tsev khaws khoom kub, ntub dej kom nrawm nrawm thiab nqus dej. Caking tuaj yeem zam tau zoo los ntawm kev ua raws li cov txheej txheem kaw, qhuav thiab cua tshuab kom cais cov dej noo. Khaws cov nplej uas tsis tau qhib cov hmoov nplej Pregelatinized nyob rau hauv cov pob khoom qub qub nyob rau hauv qis - cov av noo qhuav warehouses. Tam sim ntawd kaw cov pob tom qab qhib, tsis txhob qhib cia thiab nyob deb ntawm dej thiab qhov chaw ntub dej. Cov khoom ci ci tsis tas yuav muab pov tseg thiab tuaj yeem rov qab siv tau tom qab loosening. Tsuas yog ua kom ntub dej hnyav, cov khoom siv tawv tawv yuav tsum tau muab pov tseg, ua rau cov caking tswj tau nrog kev tswj kom zoo.
