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Step-by-Step Tutorial
PRACTICAL WALKTHROUGH · PARAMETERS · COMMON MISTAKES
Gelification with agar agar and carrageenan relies on thermally reversible polymerization of polysaccharides.
Origin: Japanese (agar) and Irish (carrageenan) (19th century (agar) and early 20th century (carrageenan)) — Asia (Japan) and Europe (Ireland)
See full technique reference →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.
Primary Reaction
Thermally reversible polymerization of polysaccharides forming a three‑dimensional network
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Key Variables