Biocompatible compositions as carriers or excipients for pharmaceutical and nutraceutical formulations and for food protection
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United States of America Patent
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Issued Date -
Oct 13, 2005
app pub date -
Apr 25, 2005
filing date -
May 23, 2001
priority date (Note) -
Abandoned
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Abstract
This invention refers to biocompatible carbohydrate polymers such as modified polysaccharides (e.g. chitosan, alginate), associated with milk protein (e.g. caseinate and/or whey proteins) designed to carry bioactive agents. The formulations may be used in various delivery systems including beads, tablets, microencapsulating agents and coatings for oral dosage forms, implants for subcutaneous devices and films for topic administration and food protection. These formulations present improved chemical resistance and exert their activity for prolonged time into gastrointestinal tract (GIT) and blood circulation as well as for preserving food qualities over long period. The association of modified chitosan, modified alginate with milk proteins results in a stabilized structure able to control the release of drugs, bacteria, bacteriocines, enzymes, nutraceutics, etc. into enteric, topic or systemic route.
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