E400

功能: en:Carrier, en:Emulsifier, 水分保持劑, 螯合剂, en:Stabiliser, en:Thickener

Alginic acid, also called algin or alginate, is a polysaccharide distributed widely in the cell walls of brown algae, where through binding with water it forms a viscous gum. It is also a significant component of the biofilms produced by the bacterium Pseudomonas aeruginosa, the major pathogen in cystic fibrosis, that confer it a high resistance to antibiotics and killing by macrophages. Its colour ranges from white to yellowish-brown. It is sold in filamentous, granular or powdered forms. - 维基百科

欧洲食品安全局的评价: Re‐evaluation of alginic acid and its sodium, potassium, ammonium and calcium salts -E 400–E 404- as food additives (2017/11/10)