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US 5,962,053 AGranted
Edible film and method
AssigneeViskase Corporation
InventorFrederick Maynard Merritt, II
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Abstract
Described is an edible, water insoluble film which is a blend of polysaccharide and protein and, in particular, a ternary blend of konjac flour as a major constituent, agar and gelatin. Also, described is a method of forming the film including a deacetylating step to insolubilize the konjac flour.
Claims15
A self supporting, water insoluble, plasticized edible film comprising:
- a) a solids content of 40 to 70 wt. % composed of a ternary blend of konjac flour, agar and gelatin which is rendered water insoluble by the deacetyation of the konjac wherein
- i) said konjac flour comprises about 42.5 to 60 wt % of said ternary blend and at least 50 wt. % of the total amount of konjac and agar;
- and
- ii) said gelatin comprising 10 to 40 wt. % of said ternary blend;
- b) said film further containing
- i) 20 to 40 wt. % polyol plasticizer and
- ii) 5 to 12 wt. % water;
- and
- c) said film having an average rewet machine direction and transverse direction tensile strength of at least 0.7 kg/add.
6 more elements
A method of forming a water insoluble self supporting film comprising the steps of:
- a) dry blending konjac flour, agar and gelatin;
- b) dissolving the blend in refluxing water to prepare a dough;
- c) casting the dough to a sheet;
- and then in sequence
- d) drying the sheet to form an uncured film;
- e) contacting the uncured film with a saturated salt solution at a pH other than neutral to deacetylate the konjac flour thereby forming a rehydrated salt-containing and water insoluble film;
- f) drying the salt-containing water insoluble film;
- g) washing the water insoluble film to form a salt-free film;
- h) plasticizing the salt-free film;
- and
- i) drying the salt-free film to provide a stand-alone film comprising a water insoluble blend of said konjac, agar and gelatin, 20 to 40 wt. % plasticizer and 5 to 12 wt%. water.
8 more elements
Dependencies are inferred from the claim text.