Encapsulation of cinnamon oil in cyclodextrin nanosponges and their potential use for antimicrobial food packaging.
The main goal of this work is the encapsulation of cinnamon essential oil in cyclodextrin nanosponges and the assessment of their antimicrobial activity against foodborne pathogens. After nanosponge synthesis, a headspace-solid phase microextraction coupled to gas chromatography-mass spectrometry (HS-SPME-GC-MS) method was validated to quantify essential oil major compounds. Results showed that essential oil was successfully encapsulated in cyclodextrin nanosponges with α-NS and β-NS being able to encapsulate higher essential oil amounts. Cinnamon essential oil, alone and encapsulated in nanosponges, proved to have antimicrobial activity against foodborne bacteria. Time-kill assays proved that the essential oil, alone or encapsulated, had a bacteriostatic effect against all bacteria tested, with the exception of Y. enterocolitica where a bactericidal action was observed. Furthermore, the controlled release achieved by its encapsulation, allowed cinnamon essential oil to be effective at a much lower concentration in culture medium than when solely dissolved in culture medium. Thus, the results described herein encourage the use of cyclodextrin nanosponges as encapsulating agents for active food packaging applications.
['Simionato|Ilaria|I|', 'Domingues|Fernanda C|FC|', 'Nerín|Cristina|C|', 'Silva|Filomena|F|']
D000900:Anti-Bacterial Agents D058640:Brochothrix D004926:Escherichia coli D018857:Food Packaging D008089:Listeria monocytogenes D008826:Microbial Sensitivity Tests D049329:Nanostructures D009822:Oils, Volatile D010938:Plant Oils D015008:Yersinia enterocolitica D047392:beta-Cyclodextrins
Cyclodextrin nanosponges Cinnamon essential oil Antimicrobial activity Foodborne pathogens Controlled release Active food packaging