Tshuaj muaj pes tsawg leeg ntawm Xanthan Gum
Cov qauv molecular ntawm xanthan cov pos hniav zoo ib yam li tus yuam sij, muaj peb lub monosaccharides: qabzib, mannose, thiab glucuronic acid, hauv ib qho piv txwv (2: 2: 1). Cov saw hlau polysaccharide no txuas nrog tshwj xeeb -1,4-glycosidic daim ntawv cog lus, tsim lub caij nplooj ntoo hlav zoo li helical qauv, nrog txhua lub helix muaj rau lub qab zib. Qhov tseem ceeb tshaj plaws, txhua ob lub helical chains intertwine los ntawm acetyl thiab pyruvate pawg ntawm lawv sab chains, tsim ib tug peb-dimensional network qauv. Cov qauv no tso cai rau xanthan cov pos hniav kom nrawm nrawm rau hauv pob tshab colloid hauv dej.
Amazing Properties ntawm nws Molecular Structure
Xanthan cov pos hniav helical qauv endows nws nrog lub cev tshwj xeeb: nws dissolves sai sai nyob rau hauv ob qho tib si dej txias thiab kub, ua ib tug siab - viscosity kua; nws cov nyhuv thickening tsis cuam tshuam txawm tias thaum rhuab mus rau 100 degree; thiab nws tseem nyob ruaj khov nyob rau hauv thaj tsam pH ntawm 2-12. Tshwj xeeb tshaj yog nthuav, nws nthuav tawm shear-thinning zog-cov tshuaj thins thaum lub zog stirred thiab tam sim ntawd rov qab mus rau viscosity tom qab stirring ceases. Cov cuab yeej no ua rau nws yog tus neeg sawv cev zoo tshaj plaws thiab stabilizer hauv kev ua zaub mov.
Los ntawm Lab mus rau Kev Siv Txhua Hnub: Cov khoom zoo no hloov pauv peb lub neej txhua hnub: tiv thaiv cov dej khov siv lead ua hauv cov dej khov rau kev ntxhib los mos; ua raws li cov thickener hauv cov tshuaj zawv plaub hau kom stabilize cov qauv; ua cov roj nplua nyeem hauv cov roj drilling kom txo kev sib txhuam; thiab txawm nyob rau hauv 3D luam ntawv, raws li ib tug bio- number case los pab hlwb precisely position lawv tus kheej. Thoob plaws ntiaj teb, ntau tshaj 200,000 tons ntawm xanthan cov pos hniav tau tsim txhua xyoo, nrog 60% siv hauv kev lag luam zaub mov, ua rau nws yog ib qho tseem ceeb ntawm 'molecular magician' hauv kev lag luam niaj hnub no.
