Glucomannan-based biodegradable film modified with turmeric and selenium powder for ammonia sensing and smart shrimp packaging

Active packaging as a solution for lipid oxidation

Sustainable biomacromolecules revolutionizing intelligent food packaging: State-of-the-art review.

The use of industrial organic waste which are chitosan and propolis as materials for the development of biodegradable and active packaging is economical and environmentally appealing. Processing of propolis-chitosan film can minimize waste, and produce low-cost added value biopolymer packaging films for targeted applications. This aims of this research is to develop and characterize a biodegradable films by incorporating chitosan with propolis extract to enhance the functional properties for potential use as active food packaging. The film’s moisture content, solubility and antimicrobial activity increase due to increasing volume of propolis extract which are 0 ml, 1.2 ml and 2.4 ml of propolis extract. Propolis-chitosan film with 2.4 ml of propolis extract is more soluble in water compared to propolis-chitosan film with 0 ml of propolis extract and 1.2 ml of propolis extract. The higher the volume of the propolis extract used, the higher the solubility of film in the water. The moisture content also will increase when higher volume of propolis extract used. Characterization of moisture content, solubility and antimicrobial activities revealed the benefits of adding propolis extract into chitosan films and the potential of using the developed film as active food packaging.

Recent advances in biomacromolecule-based nanocomposite films for intelligent food packaging- A review

Recent advances in biomolecule-based films and coatings for active and smart food packaging applications

Chitosan packaging functionalized with Cinnamodendron dinisii essential oil loaded zein: A proposal for meat conservation

In this study, we developed gelatin-based films for active packaging with the ability to inhibit E. coli. We created these novel biodegradable gelatin-based films with a nisin-EDTA mix. FT-IR, TGA, and SEM analysis showed that nisin interacted with the gelatin by modifying its thermal stability and morphology. The use of nisin (2,500 IU/mL) with concentrations of Na-EDTA (1.052 M stock solution) distributed in the polymer matrix generated a significant decrease in the growth of E. coli when compared to the control. In freshly made films (t0), the growth of E. coli ATCC 25922 was reduced by approximately 3 logarithmic cycles. Two weeks after the films were made, a reduction in antimicrobial activity was observed in approximately 1, 1 and 3 logarithmic cycles of the films with 5%, 10% and 20% of the compound (nisin/Na-EDTA) distributed in the polymer matrix, respectively. This evidences an antimicrobial effect over time. Also, biodegradation tests showed that the films were completely degraded after 10 days. With all these results, an active and biodegradable packaging was successfully obtained to be potentially applied in perishable foods. These biodegradable, gelatin-based films are a versatile active packaging option. Further research on the barrier properties of these films is needed.

Biodegradable PBAT/PLA blend films incorporated with turmeric and cinnamomum powder: A potential alternative for active food packaging

Active and intelligent biodegradable packaging films using food and food waste-derived bioactive compounds: A review

β‐Carotene may represent an excellent natural antioxidant, and nanoscale encapsulation may contribute to development of a new technique for addition of antioxidants in active packaging. The objective of this work was to develop active biodegradable films with addition of free β‐carotene or β‐carotene–loaded lipid‐core nanocapsules and to evaluate the interaction with the polymeric matrix. The addition of free β‐carotene led to a decrease in the mechanical properties of films, result of their hydrophobic character and less interaction with the matrix. β‐Carotene nanocapsules caused the increase of colour intensity of films, elongation at rupture, and less light transmission, with the gradual increase according to increase in concentration. Films with β‐carotene nanocapsules presented greater protection of sunflower oil, with lower formation of oxidation products. The lower stability of free antioxidant led to behavior similar to control film, with less oxidation protection. The addition of nanocapsules can provide better interaction with the structure, since the encapsulated carotenoid exhibits solubility in aqueous medium and present better distribution, without altering the rapid biodegradability and thermal stability of films. The results show that encapsulated bioactive compounds can be used as hydrophobic natural antioxidants and added in active biodegradable packages for maintaining food safety and extending the shelf life.

TPCS/PBAT blown extruded films added with curcumin as a technological approach for active packaging materials

Plant extracts as additives in biodegradable films and coatings in active food packaging

Enriched oil-in-water emulsions as bioactive agents for locust bean gum films: A comparative investigation

Rice husk fiber-reinforced starch antimicrobial biocomposite film for active food packaging

Active packaging is one of the most relevant emerging technologies in the food industry. It aims to interact with the packaging headspace to control the enzymatic, chemical, physical, and microbiological reactions that deteriorate food through scavenging or releasing means. The current PhD thesis originally deals with the development and characterization of mono and multilayer active and biodegradable food packaging structures based on electrospun polyhydroxyalkanoates (PHA) materials derived from circular bioeconomy strategies. In order to provide the packaging materials with active properties, essential oils, natural extracts, metallic nanoparticles or combinations thereof were incorporated into PHA by solution electrospinning. The resultant electrospun PHA mats were annealed to obtain continuous monolayers that were, thereafter, combined with cast-extruded, blown or solvent-casted biodegradable polymer films and/or barrier coatings of bacterial cellulose nanocrystals (CNCs) to develop novel multilayer systems with antimicrobial and barrier properties. These PHA-based multilayers systems presented good thermal and mechanical performance as well as high barrier properties to vapors and gases. The active films also showed improved antioxidant properties and high antimicrobial activity against food-borne bacteria in both open and, more importantly, closed systems, which can mimic real case use packaging conditions. Therefore, the here-developed materials and prototypes can be very promising as packaging materials, to constitute trays, flow packs and lids, being completely renewable and also biodegradable, with the final potential capacity to increase both quality and safety of food products in the new Circular Bioeconomy context.