title: Enhancement of Egyptian soft white cheese shelf life using a novel chitosan/carboxymethyl cellulose/zinc oxide bionanocomposite film.
abstract: A novel bionanocomposites packaging material prepared using chitosan (CH), carboxymethyl cellulose (CMC), and zinc oxide nanoparticles (ZnO-NPs), namely CH/CMC/ZnO bionanocomposites, was prepared by casting method. The CH/CMC/ZnO bionanocomposites were investigated using FT-IR, TEM, SEM, XRD, and TGA. The acquired bionanocomposites exhibited improved mechanical and thermal properties compare with the biocomposites (CH/CMC) blend. The soft white cheese were manufactured, packaged within the prepared bionanocomposites films and stored at 7°C for 30days. The influence of packaging material on packaged cheese (rheological properties, colour measurements, moisture, pH and titratable acidity) were assessed. Furthermore, the effect of packaging material on the total bacterial counts, mold & yeast and coliform in cheese was evaluated. The prepared bionanocomposites displayed good antibacterial activity against gram positive (Staphylococcus aureus), gram negative (Pseudomonas aeruginosa, Escherichia coli) bacteria and fungi (Candidia albicans). Moreover, the packaging films assisted in increasing the shelf life of white soft cheese. Therefore, it can be used in food packaging applications.
authors.affiliation: Packing and Packaging Materials Department, National Research Centre, 33 El Bohouth St. (former El Tahrir st.), Dokki, P.O. 12622, Giza, Egypt; Univ. Grenoble Alpes, LGP2, F-38000 Grenoble, France; CNRS, LGP2, F-38000 Grenoble, France. Electronic address: amyoussef27@yahoo.com.
authors.forename: Ahmed M
authors.initials: AM
authors.lastname: Youssef
authors.affiliation: Dairy Science Department, National Research Centre, 33 El Bohouth St. (former El Tahrir St.), Dokki, P.O. 12622, Giza, Egypt.
authors.forename: Samah M
authors.initials: SM
authors.lastname: El-Sayed
authors.affiliation: Dairy Science Department, National Research Centre, 33 El Bohouth St. (former El Tahrir St.), Dokki, P.O. 12622, Giza, Egypt.
authors.forename: Hoda S
authors.initials: HS
authors.lastname: El-Sayed
authors.affiliation: Dairy Science Department, National Research Centre, 33 El Bohouth St. (former El Tahrir St.), Dokki, P.O. 12622, Giza, Egypt.
authors.forename: Heba H
authors.initials: HH
authors.lastname: Salama
authors.affiliation: Univ. Grenoble Alpes, LGP2, F-38000 Grenoble, France; CNRS, LGP2, F-38000 Grenoble, France.
authors.forename: Alain
authors.initials: A
authors.lastname: Dufresne
mesh_terms: D000890:Anti-Infective Agents / Q000008:administration & dosage / Q000737:chemistry; D002176:Candida albicans / Q000187:drug effects / Q000254:growth & development; D002266:Carboxymethylcellulose Sodium / Q000008:administration & dosage / Q000737:chemistry; D002611:Cheese / Q000382:microbiology; D048271:Chitosan / Q000008:administration & dosage / Q000737:chemistry; D004926:Escherichia coli / Q000187:drug effects / Q000254:growth & development; D018857:Food Packaging; D061353:Food Storage; D053761:Nanocomposites / Q000008:administration & dosage / Q000737:chemistry; D011550:Pseudomonas aeruginosa / Q000187:drug effects / Q000254:growth & development; D013211:Staphylococcus aureus / Q000187:drug effects / Q000254:growth & development; D015034:Zinc Oxide / Q000008:administration & dosage / Q000737:chemistry
chemical_list: D000890:Anti-Infective Agents; D048271:Chitosan; D002266:Carboxymethylcellulose Sodium; D015034:Zinc Oxide
keywords: Bionanocomposite film; Chitosan; Packaging materials; Shelf life; White cheese; Zinc oxide nanoparticles