I-sodium alginate iwumkhiqizo wokukhipha iodine ne-mannitol ku-algae ensundu njenge-kelp noma ukhula lwasolwandle. I-molecule yayo yakhiwe nge-β - D-mannuronic acid (M) kanye ne-α - L-guluronic acid (G) exhunywe ngamabhondi (1 → 4). I-sodium alginate aqueous solution ine-viscosity ephezulu futhi isetshenziswe njenge-thickener, stabilizer, emulsifier, njll ekudleni. I-sodium alginate iwukudla okungenabuthi okwafakwa e-United States Pharmacopeia ekuqaleni kuka-1938. I-sodium alginate iqukethe inani elikhulu - i-COO -, engabonisa ukuziphatha kwe-polyanionic kusixazululo samanzi futhi inezinga elithile lokunamathela. Ingasetshenziswa njengendlela yokuphatha izidakamizwa ekwelapheni izicubu ze-mucosal. Ngaphansi kwezimo ezine-acidic, - Uma i-COO - iguqulwa ibe yi-COOH, i-ionization degree iyancipha, i-hydrophilicity ye-sodium alginate iyancipha, i-molecular chain iyancipha, futhi inani le-pH liyakhuphuka Iqembu le-COOH lihlala lihlukanisa, okwandisa i-hydrophilicity ye-sodium alginate futhi yelula uchungechunge lwamangqamuzana. Ngakho-ke, i-sodium alginate inokuzwela okukhulu kwe-pH. I-sodium alginate ingakha ngokushesha ijeli ngaphansi kwezimo ezithambile kakhulu. Uma ama-cation afana ne-Ca2+kanye ne-Sr2+ ekhona, iyunithi ye-Na+ku-G izoshintshana nama-divalent cations, futhi iyunithi ye-G izonqwabelanisa ukuze yakhe isakhiwo senethiwekhi esixhumene ngokuphambene, ngaleyo ndlela yakhe i-hydrogel. Izimo lapho i-sodium alginate yakha ijeli imnene, engagwema ukungasebenzi kwezidakamizwa ezibucayi, amaprotheni, amaseli, ama-enzyme nezinye izinto ezisebenzayo. Ngenxa yalezi zakhiwo ezinhle kakhulu, i-alginate ye-sodium isetshenziswe kabanzi embonini yokudla kanye nezinkambu zemithi.