1. Cellulose na-agafe site na D-glucopyranose β- A linear polymer guzobere site na njikọ nke 1,4 glycoside bonds. Akpụkpọ ahụ cellulose n'onwe ya bụ kristal nke ukwuu na enweghị ike ịme gelatin na mmiri ma ọ bụ mee ka ọ bụrụ akpụkpọ ahụ, n'ihi ya, a ghaghị ịgbanwe ya na kemịkal. Hydroxyl efu na ọnọdụ C-2, C-3 na C-6 na-enye ya ọrụ kemịkalụ ma nwee ike bụrụ mmeghachi omume oxidized, etherification, esterification na graft copolymerization. Enwere ike imeziwanye ihe solubility nke cellulose gbanwetụrụ ma nwee ezigbo arụmọrụ na-emepụta ihe nkiri.
2. Na 1908, Swiss chemist Jacques Brandenberg kwadebere cellulose film cellophane mbụ, bụ onye ọsụ ụzọ mmepe nke oge a transperent a nro nkwakọ ngwaahịa. Kemgbe 1980, ndị mmadụ malitere ịmụ cellulose gbanwere dị ka ihe nkiri oriri na mkpuchi. Akpụkpọ anụ cellulose emezigharịrị bụ akpụkpọ ahụ nke emere site na mpụta nke enwetara mgbe mgbanwechara kemịkalụ nke cellulose. Ụdị akpụkpọ ahụ a nwere nnukwu ike nkwụsị, mgbanwe, nghọta, nkwụsị mmanụ, enweghị isi na enweghị ụtọ, mmiri mmiri na ikuku oxygen.
3. A na-eji CMC na nri ndị e ghere eghe, dị ka fries French, iji belata absorption nke abụba. Mgbe ejiri ya na calcium chloride mee ihe, mmetụta dị mma. A na-eji HPMC na MC eme ihe n'ọtụtụ ebe na nri a na-ekpo ọkụ, karịsịa na nri eghe eghe, n'ihi na ha bụ gels thermal. N'Afrịka, a na-eji MC, HPMC, protein ọka na amylose egbochi mmanụ oriri n'ime nri ntụ ọka agwa agwa eghe eghe eghe, dị ka ịgbanye na ịtinye ihe ngwọta ndị a na bọọlụ uhie na-acha uhie uhie iji kwado ihe nkiri oriri. Ihe mkpuchi MC etinyere bụ nke kachasị dị irè na mgbochi griiz, nke nwere ike ibelata nnabata mmanụ site na 49%. N'ikwu okwu n'ozuzu, ihe nlele etinyere na-egosi nnabata mmanụ dị ala karịa nke a na-efesa.
4. MCna HPMC na-ejikwa na starch samples dị ka nduku bọọlụ, batter, nduku ibe na mgwakota agwa iji melite mgbochi arụmọrụ, na-emekarị site spraying. Nnyocha ahụ na-egosi na MC nwere arụmọrụ kachasị mma nke igbochi mmiri na mmanụ. Ike njide mmiri ya bụ n'ihi na ọ dị ala hydrophilicity. Site na microscope, enwere ike ịhụ na ihe nkiri MC nwere ezigbo mmachi na nri e ghere eghe. Nnyocha egosiwo na mkpuchi HPMC nke a na-efesa na bọọlụ ọkụkọ nwere ezigbo njide mmiri ma nwee ike belata ọdịnaya mmanụ n'oge frying. Enwere ike ịbawanye mmiri nke ihe nlele ikpeazụ site na 16.4%, ihe dị n'elu mmanụ nwere ike belata site na 17.9%, na ntinye mmanụ dị n'ime ya nwere ike belata site na 33.7% . Ọrụ nke mmanụ mgbochi ahụ metụtara arụmọrụ gel thermal.HPMC. Na ọkwa mbụ nke gel, viscosity na-abawanye ngwa ngwa, njikọ intermolecular na-eme ngwa ngwa, na gels ngwọta na 50-90 ℃. Ngwunye gel nwere ike igbochi ịkwaga mmiri na mmanụ n'oge frying. Ịgbakwunye hydrogel n'elu oyi akwa nke mpempe ọkụkọ e ghere eghe na-etinye n'ime achịcha achịcha nwere ike ibelata nsogbu nke usoro nkwadebe, ma nwee ike belata ntinye mmanụ nke ara ọkụkọ ma nọgide na-enwe mmetụta pụrụ iche nke ihe nlele ahụ.
5. Ọ bụ ezie na HPMC bụ ezigbo oriri ihe nkiri ihe nkiri na ezi n'ibu Njirimara na mmiri vapor iguzogide, ọ nwere obere ahịa òkè. Enwere ihe abụọ na-egbochi ngwa ya: nke mbụ, ọ bụ gel thermal, ya bụ, viscoelastic siri ike dị ka gel nke a na-emepụta na okpomọkụ dị elu, ma ọ dị na ngwọta nke nwere obere viscosity na ụlọ okpomọkụ. N'ihi ya, matrix ahụ ga-ekpo ọkụ ma kpoo ya na okpomọkụ dị elu n'oge usoro nkwadebe. Ma ọ bụghị ya, na usoro nke mkpuchi, spraying ma ọ bụ ntinye, ihe ngwọta dị mfe na-agbada, na-emepụta ihe nkiri na-enweghị isi, na-emetụta arụmọrụ nke ihe nkiri oriri. Tụkwasị na nke a, ọrụ a kwesịrị ijide n'aka na a na-edebe ụlọ ọrụ mmepụta ihe dum n'elu 70 ℃, na-efunahụ nnukwu okpomọkụ. Ya mere, ọ dị mkpa iji belata ebe gel ya ma ọ bụ mee ka viscosity ya dịkwuo ala na obere okpomọkụ. Nke abụọ, ọ dị oke ọnụ, ihe dị ka 100000 yuan / ton.
Oge nzipu: Eprel-26-2024