Qhov sib txawv tseem ceeb ntawm gelatinization thiab gelation yog tias gelatinization tshwm sim vim kev tawg ntawm kev sib txuas, whereas gelation tshwm sim vim yog tsim ntawm kev sib txuas.
Txawm hais tias cov ntsiab lus gelatinization thiab gelation suab zoo sib xws, lawv yog ob nqe lus sib txawv nrog kev siv sib txawv. Gelatinization yog tus txheej txheem ntawm kev rhuav tshem cov kev sib txuas sib txuas ntawm cov hmoov txhuv nplej siab molecules, tso cai rau cov chaw sib txuas ntawm hydrogen kom koom nrog ntau cov dej molecules. Gelation, ntawm qhov tod tes, yog cov txheej txheem ntawm kev tsim cov gel los ntawm lub kaw lus nrog polymers.
YGelatinization yog dab tsi?
Gelatinization yog txheej txheem ntawm kev rhuav tshem cov kev sib txuas ntawm cov hmoov txhuv nplej siab molecules, tso cai rau cov chaw sib txuas ntawm hydrogen kom koom nrog ntau cov dej molecules. Lub sij hawm no yog siv rau cov hmoov txhuv nplej siab; Yog li, nws yog hu ua starch gelatinization. Nyob rau hauv lub xub ntiag ntawm dej thiab cua sov, lub intermolecular bonds ntawm starch molecules puas thiab, cov hydrogen bonding qhov chaw muaj peev xwm tuav tau ntau dej molecules. Tom qab ntawd cov hmoov txhuv nplej siab tau yaj hauv dej irreversibly thiab ua raws li ib tug plasticizer.
Daim duab 01: Tsim cov Gelatin
Gelatinization tshwm sim hauv peb kauj ruam raws li cov hmoov txhuv nplej siab granule o, yaj, thiab amylose leaching. Thaum tshav kub kub, o tshwm sim vim qhov nqus dej rau hauv qhov chaw amorphous ntawm cov hmoov txhuv nplej siab. Tom qab ntawd dej nkag mus rau hauv qhov chaw nruj ntawm cov hmoov txhuv nplej siab granule uas muaj cov qauv helical ntawm amylopectin. Feem ntau, dej tsis tuaj yeem nkag mus rau thaj tsam no, tab sis cua sov tso cai rau qhov no tshwm sim. Yog li ntawd, kev nkag mus ntawm cov dej nce qhov randomness ntawm starch granules, uas ua rau lub disintegration ntawm starch.
Cov yam ntxwv uas cuam tshuam rau gelatinization muaj xws li cov nroj tsuag uas tau txais cov hmoov txhuv nplej siab, cov dej muaj nyob hauv nruab nrab, pH, concentration ntawm ntsev hauv nruab nrab, qab zib, proteins thiab rog cov ntsiab lus.
Gelation yog dab tsi?
Gelation yog tsim los ntawm gel los ntawm lub kaw lus nrog polymers. Cov ntaub ntawv polymer uas muaj ceg tuaj yeem tsim kev sib txuas ntawm cov ceg ntoo. Qhov no ua rau kev tsim cov khoom lag luam loj polymer. Ntawm qee qhov taw tes ntawm qhov kev tsim network no, ib daim ntawv macroscopic molecule thiab peb hu qhov point no ua tus gel point. Thaum lub sij hawm no, lub kaw lus poob nws fluidity thiab viscosity. Lub caij no, nws yuav loj heev. Peb tuaj yeem txiav txim siab qhov gel taw tes ntawm lub kaw lus los ntawm kev soj ntsuam qhov hloov pauv sai ntawm viscosity. Tom qab tsim cov khoom siv tsis kawg hauv lub network no, nws hu ua "gel", thiab nws tsis yaj hauv cov kuab tshuaj. Tab sis nws tuaj yeem raug o.
Daim duab 02: Qhov tshwm sim ntawm Gel Ointment
Muaj ob txoj hauv kev uas lub gel tuaj yeem tsim tau: kev sib txuas ntawm lub cev lossis kev sib txuas tshuaj lom neeg. Lub cev gelation txheej txheem cuam tshuam nrog lub cev sib txuas ntawm cov molecules polymer thaum cov tshuaj sib txuas sib txuas nrog covalent daim ntawv cog lus tsim ntawm cov khoom siv polymer.
Qhov txawv ntawm Gelatinization thiab gelation yog dab tsi?
Gelatinization yog cov txheej txheem ntawm kev rhuav tshem cov kev sib txuas sib txuas ntawm cov hmoov txhuv nplej siab uas tso cai rau cov chaw sib txuas ntawm hydrogen kom koom nrog ntau cov dej molecules. Gelation yog tsim los ntawm ib tug gel los ntawm ib tug system nrog polymers. Yog li, qhov sib txawv tseem ceeb ntawm gelatinization thiab gelation yog tias gelatinization tshwm sim vim kev tawg ntawm kev sib txuas, whereas gelation tshwm sim vim yog tsim ntawm kev sib txuas.
Hauv qab infographic qhia txog qhov sib txawv ntawm gelatinization thiab gelation.
Summary – Gelatinization vs Gelation
Gelatinization yog cov txheej txheem ntawm kev rhuav tshem cov kev sib txuas sib txuas ntawm cov hmoov txhuv nplej siab uas tso cai rau cov chaw sib txuas ntawm hydrogen kom koom nrog ntau cov dej molecules. Gelation yog txheej txheem ntawm kev tsim cov gel los ntawm cov txheej txheem nrog cov polymers. Qhov sib txawv tseem ceeb ntawm gelatinization thiab gelation yog tias gelatinization tshwm sim vim kev tawg ntawm kev sib txuas, whereas gelation tshwm sim vim yog tsim ntawm kev sib txuas.
