Electrospun Nisin-Loaded Poly(ε-caprolactone)-Based Active Food Packaging

Area of Science:

• Materials Science
• Food Science
• Microbiology

Background:

• Food waste is a significant issue, and active packaging can help mitigate it by inhibiting pathogen growth.
• Biodegradable polymers like poly(ε-caprolactone) (PCL) are promising materials for sustainable food packaging.
• Incorporating antimicrobial agents into packaging can enhance its food preservation capabilities.

Purpose of the Study:

• To develop active packaging materials using electrospun poly(ε-caprolactone) (PCL) loaded with the antimicrobial agent nisin.
• To evaluate the efficacy of these PCL/nisin fibrous mats in inhibiting the growth of specific foodborne pathogens.
• To assess the impact of this active packaging on the shelf life and safety of fresh fruits.

Main Methods:

• Electrospinning of poly(ε-caprolactone) (PCL) solutions to create nonwoven fibrous mats.
• Loading of varying concentrations of nisin into the PCL matrix during the electrospinning process.
• In vitro testing of the PCL/nisin mats against Staphylococcus aureus and Escherichia coli.
• Evaluation of fruit freshness and shelf life using packages made from PCL and PCL/nisin mats.

Main Results:

• The electrospun PCL/nisin fibrous mats successfully inhibited the growth of Staphylococcus aureus and Escherichia coli.
• Different concentrations of nisin loaded into the PCL mats demonstrated varying degrees of antimicrobial activity.
• Packaging made with PCL/nisin fibrous mats significantly extended the freshness of fruits.
• The active packaging improved the shelf life and ensured the safety of the packaged fruits.

Conclusions:

• Electrospun PCL/nisin fibrous mats represent a viable active packaging solution for fresh produce.
• This active packaging technology effectively reduces food spoilage by inhibiting microbial growth.
• The use of biodegradable PCL and antimicrobial nisin offers a sustainable approach to enhance food preservation and safety.