Antimicrobial, Rheological, and Thermal Properties of Plasticized Polylactide Films Incorporated with Essential Oils to InhibitStaphylococcus aureusandCampylobacter jejuni
| Autor: | Harsha Jacob, Nikhil Hiremath, Jasim Ahmed |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Materials science technology industry and agriculture Plasticizer macromolecular substances 04 agricultural and veterinary sciences 02 engineering and technology Polymer Polyethylene glycol 021001 nanoscience & nanotechnology 040401 food science Biodegradable polymer Polyester chemistry.chemical_compound 0404 agricultural biotechnology chemistry Chemical engineering PEG ratio Organic chemistry 0210 nano-technology Glass transition Cinnamon Oil Food Science |
| Zdroj: | Journal of Food Science. 81:E419-E429 |
| ISSN: | 0022-1147 |
| DOI: | 10.1111/1750-3841.13193 |
| Popis: | Polylactide (PLA) is the most mature biobased and biodegradable polymer. Due to its inherent brittleness, the polymer cannot be used as a packaging material without plasticizer. An attempt was made to develop antimicrobial plasticized PLA film by incorporating polyethylene glycol (PEG) and 3 essential oils (EO), namely cinnamon, garlic, and clove by solvent casting method. Physical, thermal, and rheological properties of those films were evaluated for practical applications whereas the antimicrobial properties were tested against Staphylococcus aureus and Campylobacter jejuni-pathogens related to poultry industry. Both PEG and EOs led to the formation of flexible PLA/PEG/EO films with significant drop in the glass transition temperature (Tg ), and mechanical property. Time-temperature superposition (TTS) principle was employed to melt rheology of EO-based films at selected temperature, and rheological moduli superimposed well in an extended frequency range. Among EOs, cinnamon and clove oil-based films (PLA/PEG/CIN and PLA/PEG/CLO) exhibited a complete zone of inhibition against C. jejuni at the maximum concentration (1.6 mL per 2 g PLA/PEG blend) whereas the garlic oil-based film (PLA/PEG/GAR) had the lowest activity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text