Sodium alginate yog ib qho khoom siv los ntawm kev rho tawm iodine thiab mannitol los ntawm xim av algae xws li kelp lossis seaweed. Nws cov molecule yog tsim los ntawm β - D-mannuronic acid (M) thiab α - L-guluronic acid (G) txuas los ntawm (1 → 4) bonds. Sodium alginate aqueous kua muaj viscosity siab thiab tau siv los ua cov thickener, stabilizer, emulsifier, thiab lwm yam hauv cov khoom noj. Sodium alginate yog cov khoom noj tsis muaj tshuaj lom uas tau suav nrog hauv Tebchaws Meskas Pharmacopeia thaum ntxov li xyoo 1938. Sodium alginate muaj ntau ntau ntawm - COO -, uas tuaj yeem nthuav tawm tus cwj pwm polyanionic hauv cov kua dej thiab muaj qee qhov adhesion. Nws tuaj yeem siv los ua cov khoom siv tshuaj rau kev kho cov kab mob mucosal. Nyob rau hauv acidic tej yam kev mob, - Thaum COO - yog hloov mus rau hauv COOH, lub ionization degree txo, lub hydrophilicity ntawm sodium alginate txo, cov molecular saw shrinks, thiab cov pH nqi nce COOH pab pawg neeg tsis tu ncua dissociates, ua rau lub hydrophilicity ntawm sodium alginate thiab stretching cov molecular saw. Yog li, sodium alginate muaj pH rhiab heev. Sodium alginate tuaj yeem tsim cov gel sai sai hauv cov mob me me. Thaum cations xws li Ca2 + thiab Sr2 + tshwm sim, Na + ntawm G unit yuav pauv nrog divalent cations, thiab G unit yuav pawg los tsim ib qho kev sib txuas sib txuas network, yog li tsim ib hydrogel. Cov xwm txheej raws li sodium alginate cov ntaub ntawv gel yog me me, uas tuaj yeem zam qhov tsis ua haujlwm ntawm cov tshuaj rhiab heev, proteins, hlwb, enzymes thiab lwm yam tshuaj nquag. Vim tias cov khoom zoo no, sodium alginate tau siv dav hauv kev lag luam khoom noj thiab chaw ua tshuaj.