Yintoni ebangela i-viscosity ekomisweni kwesitshizi… Ukulawula njani

Yintoni ebangela i-viscosity ekomisweni kwesitshizi… Ukulawula njani

 Isishwankathelo:

Ukutya okomileyo okutshiziweyo kwahlulwe ngamacandelo amabini: okunganamatheli kunye ne-viscous. Izithako ezingancangathi kulula ukutshiza okomileyo, uyilo olulula lwesomisi kunye nokuhamba komgubo wokugqibela ngokukhululekileyo. Imizekelo yezinto ezingabambekiyo ziquka umgubo weqanda, umgubo wobisi, izisombululo kunye nezinye i-maltodextrin, iintsini kunye neprotheni. Kwimeko yokutya okuncangathi, kukho ingxaki yokomisa phantsi kweemeko eziqhelekileyo zokumisa isitshizi. Ukutya okuncangathi kudla ngokuncamathela eludongeni lwesomisi, okanye kube kukutya okuncangathi okungenamsebenzi kumagumbi okomisa kunye neenkqubo zothutho, ezineengxaki zokusebenza eziphantsi kunye nezivuno zemveliso. Ukutya kweswekile kunye ne-asidi yimizekelo eqhelekileyo.

I-Viscos yinto edibene nayo kwinkqubo yokomisa izinto zokutya ezityebileyo kwi-glycolic acid. I-powder viscosity luhlobo oluthile lokubambelela ngokubambisana. Iyakwazi ukuchaza i-particle-particle viscosity (ukubambisana) kunye ne-particle-wall viscosity (i-adhesion). Umlinganiselo wamandla okubopha kunye namasuntswana omgubo ngenxa yeempawu zayo zangaphakathi ezibizwa ngokuba yi-cohesion, ukwenza ubuninzi kwibhedi engumgubo. Ke ngoko, amandla afuna ukugqobhoza i-powder agglomerate kufuneka abe mkhulu kunobumbano. Ukubambelela kukusebenza kojongano, kwaye amasuntswana omgubo ahambelana nomkhwa wokutshiza isixhobo sokumisa. Ubumbano kunye nokunamathela yimilinganiselo ephambili yokuyila iimeko zokumisa kunye nokomisa. Ukubunjwa komphezulu we-powder particles ikakhulu kuxanduva lwe-viscosity. Ubumbano kunye nokuthambekela kokunamathela kwi-powder particle surface materials yahlukile. Ngenxa yokuba ukomisa kufuna isixa esikhulu se-solute ukuba sidluliselwe kwi-particle surface, ininzi. Iimpawu ezimbini ze-viscosity (ukubumbana kunye nokubambelela) kunokuhlalisana kwi-spray-drying sugar-rich rich materials. I-viscosity phakathi kwamasuntswana kukubunjwa kweebhulorho ezingamanzi ezisisigxina, iibhulorho ezingamanzi ezihambayo, amatyathanga omatshini phakathi kweemolekyuli, kunye nomxhuzulane we-electrostatic kunye neebhulorho eziqinileyo. Isizathu esona sizathu sokubambelela kweengqungquthela ze-powder eludongeni kwigumbi lokumisa kukulahlekelwa kwezixhobo kwi-spray-drying iswekile kunye nokutya okune-asidi. Xa i powder igcinwe ixesha elide, iya koma eludongeni.

Ikhokelela kwi-viscous

Sthandaza-ukutya okutyebileyo ukomisa umgubo ukuphinda kusetyenziswe ubuchwepheshe bokutshiza bokutshiza. Iishukela eziphantsi kwee-molecular weight zinzima kakhulu (i-glucose, i-fructose) kunye ne-organic acids (i-citric acid, i-malic acid, i-tartaric acid). Izinto ezincinci ze-molecular ezifana nokufunxa kwamanzi aphezulu, i-thermoplasticity kunye ne-low vitrification transition temperature (Tg) inegalelo kwiingxaki ze-viscosity. Iqondo lobushushu lokutshiza lingaphezulu kweTg20°C. Uninzi lwala macandelo lwenza amasuntswana athambileyo kwi-viscous surface, ebangela i-powder viscosity, kwaye ekugqibeleni yenze isakhiwo se-paste endaweni yomgubo. Ukuhamba kwemolekyuli ephezulu yale molekyuli kungenxa yobushushu obuphantsi be-vitrification transition (Tg), ekhokelela kwiingxaki ze-viscosity kwizitshizi zokutshiza eziqhele ukuthandwa kwiqondo lobushushu. Iimpawu eziphambili zeglasi yokuguqulwa kweglasi kunye neqondo lokushisa lokuguqulwa kwesigaba se-amorphous. Isiganeko sokutshintsha kweglasi senzeke kwisiqina esiqinileyo, iswekile e-amorphous, eye yafumana utshintsho kwisigaba solwelo lwerabha ethambileyo. Amandla omphezulu kunye neglasi eqinileyo inamandla asezantsi kwaye ayihambelani nemiphezulu eqinileyo esezantsi. Ngenxa yobume beglasi kwi-rubber ferry (okanye i-liquid), umphezulu wezinto eziphathekayo unokuphakanyiswa, kwaye intsebenziswano phakathi kwe-molecule kunye nomhlaba oqinileyo unokuqala. Kwimisebenzi yokomisa ukutya, imveliso ikwimeko engamanzi okanye encamathelayo, kwaye ukutya okungamanzi/okuncamathelayo okususa i-agent yeplastiki (amanzi) iba yiglasi. Ukuba ukutya okuluhlaza akutshintshi ukusuka kwiqondo lokushisa eliphezulu lokumisa kunokushisa kweglasi, imveliso iya kugcina i-viscosity yamandla aphezulu. Ukuba olu hlobo lokutya luchukumiseke nge-high-energy surface eqinile, luya kubambelela okanye lubambelele kuyo.

Ukulawula i-viscosity 

Kukho izinto ezininzi zesayensi kunye neendlela ezisekelwe kwinkqubo yokunciphisa i-viscosity. Iindlela ezisisiseko zezinto zesayensi ziquka izinto ezinobunzima obuphezulu bemolekyuli ezongezelelweyo zokomisa ulwelo ukunyusa ubushushu ngaphandle kokuguqulwa kwe-vitrification, kunye neendlela ezisekelwe kwinkqubo ziquka iindonga kunye nomzantsi wegumbi lomatshini.