To date chitosan has attracted notable interest due to its biological
activities such as antimicrobial (Sudarshan and others 1992; No
and others 2002), antitumor (Tokoro and others 1988), and hypocholesterolemic
functions (Sugano and others 1992). The antimicrobial
activity of chitosan against a range of foodborne filamentous
fungi, yeast, and bacteria has attracted attention as a potential food
preservative of natural origin (Sagoo and others 2002).