Description
Gelification with agar agar and carrageenan relies on thermally reversible polymerization of polysaccharides.
Technical
Agar agar forms a rigid, brittle network upon cooling from 90–100 °C, while carrageenan forms ion‑dependent, flexible gels that require specific divalent or monovalent cations. Proper temperature control, concentration, and ionic conditions are essential to achieve desired gel strength and stability.
Science
Primary Reaction
Thermally reversible polymerization of polysaccharides forming a three‑dimensional network
Sensory Profile
Aroma ()
neutralmildslightly sweetsubtle seaweedclean
Origin & History
Civilization
Japanese (agar) and Irish (carrageenan)
Era
19th century (agar) and early 20th century (carrageenan)