Sodium alginate ndi njira yotulutsira ayodini ndi mannitol kuchokera ku algae wa bulauni monga kelp kapena nyanja zam'madzi. Molekyulu yake imapangidwa ndi β - D-mannuronic acid (M) ndi α - L-guluronic acid (G) yolumikizidwa ndi (1 → 4) zomangira. Sodium alginate amadzimadzi yankho ali mkulu mamasukidwe akayendedwe ndipo wakhala ntchito monga thickener, stabilizer, emulsifier, etc. mu chakudya. Sodium alginate ndi chakudya chopanda poizoni chomwe chinaphatikizidwa ku United States Pharmacopeia kumayambiriro kwa 1938. Sodium alginate ili ndi kuchuluka kwakukulu kwa - COO -, yomwe imatha kusonyeza khalidwe la polyanionic mu njira yamadzimadzi ndipo imakhala ndi digiri inayake ya adhesion. Itha kugwiritsidwa ntchito ngati chonyamulira mankhwala pochiza minofu ya mucosal. Pansi pa acidic mikhalidwe, - Pamene COO - isandulika kukhala COOH, digiri ya ionization imachepa, hydrophilicity ya sodium alginate imachepa, unyolo wa maselo umachepa, ndipo pH mtengo ukuwonjezeka Gulu la COOH limasiyana mosalekeza, kuonjezera hydrophilicity ya sodium alginate ndi kutambasula unyolo wa maselo. Chifukwa chake, sodium alginate ili ndi chidwi chachikulu cha pH. Sodium alginate imatha kupanga gel osakaniza m'malo ochepa kwambiri. Pamene ma cations monga Ca2 + ndi Sr2 + alipo, Na + pa G unit idzasinthana ndi ma divalent cations, ndipo G unit idzasunthika kuti ipange ma network olumikizidwa, motero kupanga hydrogel. Zinthu zomwe sodium alginate mitundu gel osakaniza ndi wofatsa, amene angapewe inactivation tcheru mankhwala, mapuloteni, maselo, michere ndi zina yogwira zinthu. Chifukwa cha zinthu zabwinozi, sodium alginate yakhala ikugwiritsidwa ntchito kwambiri m'makampani azakudya komanso m'minda yamankhwala.