?O ka sodium alginate kahi huahana o ka unuhi ?ana i ka iodine a me ka mannitol mai nā limu brown e like me ke kelp a i ?ole limu. Ho?okumu ?ia kona mole me ka β - D-mannuronic acid (M) a me ka α - L-guluronic acid (G) i ho?opili ?ia e (1 → 4) mau mea pa?a. He ki?eki?e viscosity ka sodium alginate aqueous solution a ua ho?ohana ?ia ma ke ?ano he mānoanoa, stabilizer, emulsifier, etc. i ka mea?ai. ?O ka sodium alginate kahi mea?ai ?ona ?ole i ho?okomo ?ia i loko o ka United States Pharmacopeia i ka makahiki 1938. ?O ka sodium alginate ka nui o - COO -, hiki ke hō?ike i ka ?ano polyanionic i loko o ka wai wai a loa?a kekahi degere o ka pili. Hiki ke ho?ohana ?ia ma ke ?ano he mea lawe lā?au no ka mālama ?ana i ka ?i?o mucosal. Ma lalo o nā kūlana acidic, - Ke ho?ololi?ia ka COO - i COOH, emi ka ionization degere, emi ka hydrophilicity o ka sodium alginate, emi ke kaulahao mole, a pi?i ka pH ?O ka hui COOH e ho?oka?awale mau ana, e ho?onui ana i ka hydrophilicity o ka sodium alginate a me ka hohola i ke kaulahao mole. No laila, loa?a i ka sodium alginate ka ?ike pH nui. Hiki i ka sodium alginate ke hana koke i ka gel ma lalo o nā kūlana ha?aha?a loa. Ke loa?a nā cations e like me Ca2 + a me Sr2 +, e ho?ololi ka Na + ma ka pū?ulu G me nā cations divalent, a e ho?opa?a ?ia ka pū?ulu G e hana i kahi ?ano pūnaewele pili kea, a laila e hana i kahi hydrogel. ?O nā kūlana ma lalo o ka sodium alginate e hana ai i ka gel he ma?alahi, hiki ke pale i ka hana ?ole o nā lā?au lapa?au ko?iko?i, nā protein, nā cell, nā enzymes a me nā mea hana ?ē a?e. Ma muli o kēia mau waiwai maika?i, ua ho?ohana nui ?ia ka sodium alginate i ka ?oihana mea?ai a me nā māla lā?au.