Process for the preparation of cellulose film, cellulose film produced thereby, artificial skin graft and its use
AssigneeBio Fill Produtos Biotechnologicos S.A.
InventorLuiz F. X. Farah
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Abstract
There is described a process for the preparation of cellulose film, comprising the steps of preparing a culture medium having as nutrients sources of nitrogen and of carbohydrate, seeding this medium with a culture of acetobacter, species Xylinium; incubating the culture at temperatures which permit bacterial activity for a time suitable to the final intended use of the film, and removing the formed film from the culture medium for dehydration in a distended state. The film thus prepared is suitable for use as an artificial skin graft, a separating membrane, or artificial leather.
Claims10
A liquid gas permeable cellulose film, produced according to the process comprising the steps of:
- preparing a culture medium having as nutrients a carbohydrate nutrient and a source of nitrogen;
- seeding in this medium a culture of Acetobacter, species xylinum;
- incubating the culture at temperatures which permit the activity of the bacteria during a time suitable for the intended use of the film;
- and
- withdrawing the formed film from the culture medium and dehydrating it while it is stretched.
Dependencies are inferred from the claim text.