Sodium alginate ni umusaruro wo gukuramo iyode na mannitol muri algae yijimye nka kelp cyangwa ibyatsi byo mu nyanja. Molekile yayo igizwe na β - D-mannuronic aside (M) na α - L-guluronic aside (G) ihujwe na (1 → 4). Sodium alginate yumuti wamazi ifite ubukonje bwinshi kandi yakoreshejwe nkibyimbye, stabilisateur, emulisiferi, nibindi mubiryo. Sodium alginate ni ibiryo bidafite uburozi byashyizwe muri Reta zunzubumwe za Amerika Pharmacopeia guhera mu 1938. Alginate ya Sodium irimo ibintu byinshi - COO -, bishobora kwerekana imyitwarire ya polyanionique mu gisubizo cy’amazi kandi ifite urugero runaka rwo gufatira hamwe. Irashobora gukoreshwa nk'utwara ibiyobyabwenge mu kuvura ingirangingo. Mugihe cya acide, - Iyo COO - ihinduwe muri COOH, impamyabumenyi ya ionisation iragabanuka, hydrophilicity ya sodium alginate iragabanuka, urunigi rwa molekile iragabanuka, kandi agaciro ka pH kiyongera itsinda rya COOH rihora ritandukana, ryongera hydrophilique ya sodium alginate no kurambura urunigi rwa molekile. Kubwibyo, sodium alginate ifite pH igaragara cyane. Sodium alginate irashobora gukora gel byihuse mugihe cyoroheje cyane. Iyo cations nka Ca2 + na Sr2 + zihari, Na + kumurongo wa G izahanahana hamwe na cations zingana, hanyuma G igahagarara kugirango ikore imiyoboro ihuza imiyoboro, bityo ikore hydrogel. Imiterere ya sodium alginate ikora gel yoroheje, ishobora kwirinda kudakora imiti yoroheje, proteyine, selile, enzymes nibindi bintu bikora. Bitewe niyi mico myiza, sodium alginate yakoreshejwe cyane munganda zibiribwa no murwego rwa farumasi.