Xanthan gum

Iinkcukacha zemveliso

MF: C8H14Cl2N2O2
MW: 241.11496
CAS: 11138-66-2

I-1.Xanthan gum yi-molecular weight polysaccharide material eyenziwa yi-polymerized ukusuka kwiyunithi enye kunye ne-5 ye-Molecular sugars njengeyunithi.Iyunithi nganye yenziwe ngama-molecule e-glucose, i-2 iamolekyu ze-mannose kunye ne-molecule ye-glucuronic acid.Ikhonkco layo eliphambili liqulunqwe yi-β-Glucose idibaniswe yi-1,4-glycosidic bond.Ukwakhiwa kwee-molecule ze-2 ze-glucose kufana ne-cellulose.Kukho iimolekyuli ezi-2 ze-mannose kunye ne-1 imolekyuli ye-glucuronic acid kwi-C3 ye-glucose ukwenza i-chain chain.Kukho i-pyruvic acid kunye namaqela e-carboxylic acid ecaleni kwekhonkco.Ngenxa yokuba ikhonkco elisecaleni liqulathe amaqela aneasidi, inika iipolyanion kwisisombululo esinamanzi, senza imigangatho emithathu-ntathu yesakhiwo sexanthan gum: ikhonkco elisecaleni elineanion livuthuza ikhonkco eliphambili ukwenza i-helical structure, kwaye iimolekyuli zenza i-double stranded. i-helix ngamabhondi e-hydrogen, ngelixa ulwakhiwo lwe-helical olutsalwa kabini lugcinwa ziibhondi ezibuthathaka ezingenakho covalent, zenza i- “super bonded ribbon helical polymer” eqhelekileyo.Ukusebenza kwayo okuyingqayizivele kuhambelana ne-pyruvic acid equlethwe kuyo.Ngokuqhelekileyo, umxholo we-pyruvic acid kwi-xanthan gum ingasetyenziselwa ukulinganisa ukusebenza kwayo.

I-2.Iimpawu ze-rheological eziqhelekileyo, i-viscosity ephezulu kwi-concentration ephantsi, ukumelana nobushushu, ukuxhathisa kwe-asidi, ukuxhathisa kwe-alkali, ukumelana ne-enzymatic hydrolysis, ukuhambelana, ukunyibilika, ukusabalalisa, ukugcinwa kwamanzi.

3.I-Solubility enyibilikayo emanzini, enganyibilikiyo kwi-ethanol (ot-42).Thatha i-300ml yamanzi kuvavanyo lokuqulunqa ijeli, uyibeke kwi-beaker ye-400ml, uyifudumeze ukuya kwi-80 ℃, kwaye wongeze i-1.5g yesampuli kunye ne-1.5g ye-carrageenan engumgubo phantsi kokuvuselela okukhulu komatshini.Gcoba de kube isisombululo senziwe, kwaye uqhubeke uvuselela i-3chemicalbook0min.Ngexesha lokuxuba, ubushushu bamanzi abuyi kuba ngaphantsi kwe-60 ℃, bayeke ukuxuba, kwaye baphole kwiqondo lokushisa elingaphezulu kwe-2H.Xa iqondo lobushushu lingaphantsi kwe-40 ℃, irabha eqinileyo efana nejeli kufuneka yenziwe, kodwa ijeli enjalo ayiyi kwenziwa ukuba isampuli kuphela isetyenziswe endaweni yesisombululo se-1% esilungiselelwe ngendlela efanayo ne-carrageenan.

Isicelo

1. Kwi-drilling ye-oil industry, i-0.5% isisombululo se-xanthan glue inokugcina i-viscosity yamanzi e-drilling fluid kunye nokulawula iimpawu zayo ze-rheological, ukwenzela ukuba i-viscosity ye-high-speed-roating bit incinci kakhulu, egcina kakhulu ukusetyenziswa kwamandla. .Nangona kunjalo, igcina i-viscosity ephezulu kwindawo yokugrumba engatshintshiyo, edlala indima ekuthinteleni ukudilika kodonga lomthombo kunye nokuququzelela ukusika igrabile ngaphandle kwequla.

2. Kwishishini lokutya, kungcono kunezongezo zokutya ezikhoyo ezifana ne-gelatin, i-CMC, i-seaweed gum kunye ne-pectin.Ukongeza i-0.2% - 1% kwijusi yeziqhamo yenza ukuba ijusi yeziqhamo ibe nokubambelela kakuhle, incasa entle, kwaye ilawule ukungena nokuhamba;Njengesongezo sesonka, i-chemicalbook inokwenza isonka sizinze, sigudileyo, songe ixesha kwaye sinciphise iindleko;Ukusebenzisa i-0.25% ekufakeni isonka, ukuzaliswa kokutya kunye ne-icing kunokunyusa i-taste kunye ne-flavour, ilula umbutho weemveliso, ukwandisa ubomi beshelufu, kunye nokuphucula ukuzinza kweemveliso ukufudumeza kunye neqhwa;Kwiimveliso zobisi, ukongeza i-0.1% - 0.25% kwi-ayisikrimu inokudlala indima ebalaseleyo yokuzinzisa;Inokubonelela ngolawulo oluhle lwe-viscosity ekudleni okusemathinini, kwaye inokutshintsha indawo yesitashi.Inxalenye enye ye-xanthan gum inokutshintsha i-3 ~ 5 iinxalenye zestatshi.Ngelo xesha, i-xanthan gum isetyenziswe ngokubanzi kwi-candy, i-condiments, ukutya okufriziwe kunye nokutya okumanzi.