Prolonging food shelf-life by dual actives release from multi-layered polymer particles
| Autor: | Sampa Saha, Agni Kumar Biswal |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Staphylococcus aureus
Time Factors Active packaging Tocopherols One-Step Bacterial growth Antioxidants chemistry.chemical_compound Colloid and Surface Chemistry Anti-Infective Agents Polylactic Acid-Polyglycolic Acid Copolymer Lipid oxidation Escherichia coli Physical and Theoretical Chemistry Benzoic acid technology industry and agriculture Reproducibility of Results Surfaces and Interfaces General Medicine Benzoic Acid Biodegradable polymer Controlled release Drug Liberation PLGA Food Storage chemistry Chemical engineering Solvents Emulsions Hydrophobic and Hydrophilic Interactions Polyglycolic Acid Biotechnology |
| Zdroj: | Colloids and Surfaces B: Biointerfaces. 175:281-290 |
| ISSN: | 0927-7765 |
| Popis: | Biodegradable polymer based 'controlled release packaging' technology has ability to release packaging actives in controlled manner to prolong the food shelf-life. Currently available systems are not sufficiently capable of releasing multiple actives in sustainable fashion. Hence, the purpose of this study was to develop dual actives (antioxidant and antibacterial) loaded multilayered microparticles in one step and to release them at rates suitable for long-term inhibition of bacterial growth as well as lipid oxidation in food. In order to achieve this goal, 2 kinds of multilayered polymer particles made up of PLLA (Poly(l-lactic acid)) and PLGA (Poly(dl-lactic-co-glycolic acid) with varying viscosity were developed using emulsion solvent evaporation method. Surprisingly, low viscous PLGA resulted tri-layered particles (PLGA/PLLA/PLGA: shell/middle/core) instead of bi-layered (PLGA/PLLA: shell/core) particles as observed for high viscous PLGA. The mechanism of formation of tri-layered particles was investigated in detail. The outermost layer consisted of relatively more hydrophilic polymer PLGA along with benzoic acid (antibacterial) and the inner core comprised of hydrophobic polymer PLLA and tocopherol (antioxidant). Release study demonstrated that release rate of dual actives were significantly accelerated from tri-layered particles in comparison to bi-layered one and their release profiles can be well explained with the help of Ridger-Peppas model. Both sets of particles exhibited long-term antibacterial (against both Escherichia coli and Staphylococcus aureus) as well as antioxidant effect over a period of 60 days. The results show for the first time the feasibility of using multilayered microparticles to prolong the food shelf-life by simultaneous release of multiple actives. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect