Functional Properties of Plasticized Bio-Based Poly(Lactic Acid)_Poly(Hydroxybutyrate) (PLA_PHB) Films for Active Food Packaging
| Autor: | Nuria Burgos, Elena Fortunati, Francesca Luzi, Stefano Fiori, Franco Dominici, Alfonso Jiménez, Francesco Cristofaro, Livia Visai, I. Armentano, Jose Maria Kenny |
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| Přispěvatelé: | Universidad de Alicante. Departamento de Química Analítica, Nutrición y Bromatología, Análisis de Polímeros y Nanomateriales |
| Rok vydání: | 2017 |
| Předmět: |
Risk
Antioxidant Lactic acid oligomers medicine.medical_treatment Active packaging 02 engineering and technology Antibacterial properties Bio-films Carvacrol Migration Food Science Safety Risk Reliability and Quality Process Chemistry and Technology Industrial and Manufacturing Engineering 010402 general chemistry 01 natural sciences chemistry.chemical_compound medicine Organic chemistry Food science Aqueous solution Plasticizer 021001 nanoscience & nanotechnology Antimicrobial 0104 chemical sciences Lactic acid Food packaging chemistry Reliability and Quality Química Analítica Safety 0210 nano-technology |
| Zdroj: | RUA. Repositorio Institucional de la Universidad de Alicante Universidad de Alicante (UA) |
| ISSN: | 1935-5149 1935-5130 |
| DOI: | 10.1007/s11947-016-1846-3 |
| Popis: | Fully bio-based and biodegradable active films based on poly(lactic acid) (PLA) blended with poly(3-hydroxybutyrate) (PHB) and incorporating lactic acid oligomers (OLA) as plasticizers and carvacrol as active agent were extruded and fully characterized in their functional properties for antimicrobial active packaging. PLA_PHB films showed good barrier to water vapor, while the resistance to oxygen diffusion decreased with the addition of OLA and carvacrol. Their overall migration in aqueous food simulant was determined and no significant changes were observed by the addition of carvacrol and OLA to the PLA_PHB formulations. However, the effect of both additives in fatty food simulant can be considered a positive feature for the potential protection of foodstuff with high fat content. Moreover, the antioxidant and antimicrobial activities of the proposed formulations increased by the presence of carvacrol, with enhanced activity against Staphylococcus aureus if compared to Escherichia coli at short and long incubation times. These results underlined the specific antimicrobial properties of these bio-films suggesting their applicability in active food packaging. This work was funded by the SAMSUNG GRO PROGRAMME 2012 and the Spanish Ministry of Economy and Competitiveness (Ref. MAT2014-59242-C2-2-R and MAT2014-55778-REDT). |
| Databáze: | OpenAIRE |
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