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Images of AstaSana astaxanthin (AST)-free and 1%AST-supplemented film-forming solutions examined using the cryo-SEM technique (A) and the light microscope (B). Images of 0.5% AST-supplemented 75/25 gum arabic/gelatin (GAR75/GEL25) (a) and water-soluble soy polysaccharides/gelatin (WSSP75/GEL25) film-forming solutions (b) taken with the polarizing microscope (C).
