Description
Acid‑base neutralization gels are formed by reacting a polysaccharide such as sodium alginate with a divalent cation (e.g., calcium chloride).
Technical
The Ca²⁺ ions cross‑link guluronic acid blocks in the alginate chain, creating a rapid, reversible gel network. Ionic bonds form within seconds, and the gel strength depends on alginate and CaCl₂ concentrations, temperature, and pH. The process is exploited in spherification and encapsulation techniques.
Science
Primary Reaction
Sodium alginate + CaCl₂ → Ca‑alginate gel via ionic cross‑linking
Sensory Profile
Aroma ()
neutralcleansubtlemineralfreshaqueous
Origin & History
Civilization
Japanese
Era