title: Chitosan-based microcapsules containing grapefruit seed extract grafted onto cellulose fibers by a non-toxic procedure.
abstract: A novel non-toxic procedure is described for the grafting of chitosan-based microcapsules containing grapefruit seed oil extract onto cellulose. The cellulose was previously UV-irradiated and then functionalized from an aqueous emulsion of the chitosan with the essential oil. The novel materials are readily attained with durable fragrance and enhanced antimicrobial properties. The incorporation of chitosan as determined from the elemental analyses data was 16.08+/-0.29 mg/g of sample. Scanning electron microscopy (SEM) and gas chromatography-mass spectroscopy (GC-MS) provided further evidence for the successful attachment of chitosan microcapsules containing the essential oil to the treated cellulose fibers. The materials thus produced displayed 100% inhibition of Escherichia coli and Staphylococcus epidermidis up to 48 h of incubation. Inhibition of bacteria by the essential oil was also evaluated at several concentrations.
authors.affiliation: Universidad Autónoma Metropolitana, Av. San Rafael Atlixco No. 186, Col. Vicentina, Mexico City, Mexico.
authors.forename: Diana
authors.initials: D
authors.lastname: Alonso
authors.forename: Miquel
authors.initials: M
authors.lastname: Gimeno
authors.forename: José D
authors.initials: JD
authors.lastname: Sepúlveda-Sánchez
authors.forename: Keiko
authors.initials: K
authors.lastname: Shirai
mesh_terms: D000890:Anti-Infective Agents / Q000737:chemistry / Q000494:pharmacology; D002214:Capsules / Q000737:chemistry*; D002482:Cellulose / Q000737:chemistry*; D048271:Chitosan / Q000737:chemistry*; D004655:Emulsions / Q000737:chemistry; D004926:Escherichia coli / Q000187:drug effects; D008401:Gas Chromatography-Mass Spectrometry; D056604:Grape Seed Extract / Q000737:chemistry* / Q000494:pharmacology; D008855:Microscopy, Electron, Scanning; D013212:Staphylococcus epidermidis / Q000187:drug effects
chemical_list: D000890:Anti-Infective Agents; D002214:Capsules; D004655:Emulsions; D056604:Grape Seed Extract; D002482:Cellulose; D048271:Chitosan