Description
Thin, flexible films made from starch, chitosan, PLA or seaweed that can be eaten or composted after use.
Technical
Film formation relies on thermally induced gelatinization of polysaccharides (potato starch, laminarin) or solvent‑casting of biopolymers (PLA) followed by controlled drying. Chitosan films gain mechanical strength through glycerol‑mediated plasticization and heat‑induced cross‑linking. Mechanical properties and moisture content are governed by temperature, humidity, drying time, and plasticizer concentration.
Science
Primary Reaction
Thermal gelatinization and polymer cross‑linking (hydrogen‑bond network formation)
Sensory Profile
Aroma ()
neutralslightly earthymildly sweetsubtle seaweed (if nori-based)hint of corn (if tortilla-derived)
Origin & History
Civilization
Japanese, Mexican