I-Xanthan gum okwangoku yeyona iphezulu yejeli ye-bio malunga nokutyeba, ukumiswa, ukumiliselwa, kunye nokuzinza kumazwe ngamazwe. Ubungakanani bamaqela e-pyruvate ekupheleni kwekhonkco yecala le-molecular ye-xanthan gum inempembelelo ebalulekileyo kwiipropati zayo. I-Xanthan gum ineempawu eziqhelekileyo zeepolymers ezide, kodwa iqulethe amaqela asebenzayo ngaphezu kweepolymers eziqhelekileyo kwaye ibonisa iimpawu ezizodwa phantsi kweemeko ezithile. Ukuhambelana kwayo kwisisombululo samanzi kuhlukeneyo, kubonisa iimpawu ezahlukeneyo phantsi kweemeko ezahlukeneyo.

1. Ukunqunyanyiswa kunye neempawu ze-emulsifying

I-Xanthan gum inefuthe elihle lokumiswa kwizinto eziqinileyo ezinganyibilikiyo kunye namathontsi eoli. Iimolekyuli ze-Xanthan gum sol zinokwenza ii-copolymers ze-helical ezibophene kakhulu, zenze ijeli eethe-ethe njengesakhiwo sothungelwano esinokuxhasa i-morphology yamasuntswana aqinileyo, amathontsi, kunye namaqamza, ebonisa ukuzinza okuqinileyo kwe-emulsifying kunye nokukwazi ukuxhoma okuphezulu.

2. Ukunyibilika kakuhle kwamanzi

I-Xanthan gum inokunyibilika ngokukhawuleza emanzini kwaye ine-solubility efanelekileyo yamanzi. Ngokukodwa i-soluble emanzini abandayo, inokuphelisa inkqubo enzima kwaye kulula ukuyisebenzisa. Nangona kunjalo, ngenxa ye-hydrophilicity yayo eqinile, ukuba amanzi ongezwa ngokuthe ngqo ngaphandle kokuphazamiseka okwaneleyo, uluhlu lwangaphandle luya kutsala amanzi kwaye lwandise lube yi-gel, oluya kuthintela amanzi ukuba angangeni kwinqanaba langaphakathi kwaye achaphazele ukusebenza kwawo. Ngoko ke, kufuneka isetyenziswe ngokuchanekileyo. Xuba i-xanthan gum powder eyomileyo okanye izongezo zomgubo owomileyo ezifana netyuwa kunye neswekile, kwaye uyongeze kancinci emanzini ashukumisayo ukwenza isisombululo sokusetyenziswa.

3. Ipropathi etyebisayo

Isisombululo se-Xanthan gum sineempawu zokuxininisa okuphantsi kunye ne-viscosity ephezulu (i-viscosity ye-1% yesisombululo se-aqueous ilingana namaxesha angama-100 e-gelatin), iyenza i-thickener esebenzayo.

4. I-Pseudoplasticity

Isisombululo se-xanthan gum sine-viscosity ephezulu phantsi kweemeko ze-static okanye eziphantsi ze-shear, kwaye zibonisa ukuhla okubukhali kwi-viscosity phantsi kweemeko eziphezulu zokucheba, kodwa isakhiwo se-molecular sihlala singatshintshi. Xa i-shear force iphelile, i-viscosity yasekuqaleni ibuyiselwa ngokukhawuleza. Ubudlelwane phakathi kwamandla okucheba kunye ne-viscosity yiplastiki ngokupheleleyo. I-pseudoplasticity ye-xanthan gum ivelele kakhulu, kwaye le pseudoplasticity isebenza ngokugqithisileyo ekuzinziseni ukumiswa kunye ne-emulsions.

5. Ukuzinza kubushushu

I-viscosity yesisombululo se-xanthan gum ayitshintshi kakhulu ngeqondo lokushisa. Ngokubanzi, i-polysaccharides ifumana utshintsho lwe-viscosity ngenxa yokufudumeza, kodwa i-viscosity ye-xanthan gum isisombululo samanzi ihlala ingatshintshi phakathi kwe-10-80 ℃. Nkqu nezisombululo ezinamanzi ezigxininisiweyo ezisezantsi zisabonisa i-viscosity ephezulu ezinzileyo kuluhlu olubanzi lobushushu. Ukufudumeza i-1% yesisombululo se-xanthan gum (equlethe i-1% ye-potassium chloride) ukusuka kwi-25 ℃ ukuya kwi-120 ℃ kunciphisa kuphela i-viscosity yayo nge-3%.

6. Ukuzinza kwi-asidi kunye ne-alkalinity

Isisombululo se-Xanthan gum sizinzile kakhulu kwi-asidi kunye ne-alkalinity, kwaye i-viscosity yayo ayichaphazeleki phakathi kwe-pH 5-10. Kukho utshintsho oluncinci kwi-viscosity xa i-pH ingaphantsi kwe-4 kwaye inkulu kune-11. Ngaphakathi koluhlu lwe-pH lwe-3-11, ubuninzi kunye nobuncinci bexabiso le-viscosity buhluke ngaphantsi kwe-10%. I-Xanthan gum inokunyibilika kwiisombululo ezahlukeneyo ze-asidi, njenge-5% sulfuric acid, i-5% ye-nitric acid, i-5% ye-acetic acid, i-10% ye-hydrochloric acid, kunye ne-25% ye-phosphoric acid. Ezi zisombululo ze-xanthan gum acid zizinzile kwiqondo lobushushu begumbi kwaye aziyi kutshintsha kumgangatho weenyanga ezininzi. I-Xanthan gum inokunyibilika kwisisombululo se-sodium hydroxide kwaye ineempawu zokuqina. Isisombululo esisiphumo sizinzile kakhulu kwiqondo lokushisa. I-Xanthan gum inokonakaliswa yi-oxidants eyomeleleyo efana ne-perchloric acid kunye ne-persulfate, kwaye ukuthotywa kukhawuleza ngokunyuka kweqondo lokushisa.

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