Effect of active phenolic acids on properties of PLA-PHBV blend films

Hernández-García, Eva; Vargas, María; Chiralt, Amparo

doi:10.1016/j.fpsl.2022.100894

Cited by 19 publications

(12 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The obtained value was enough to reach the minimal inhibitory concentration (MIC) of the tested bacteria in the culture medium if the compound was fully released. In fact, the films used for the antibacterial test (23.76 cm 2 ) could deliver to the culture medium (10 mL) an active concentration of 1250 mg/L, which is enough to overcome the MIC of this compound for L. innocua and E. coli (700 and 800 mg/L, respectively [ 18 ]), thus inhibiting the bacterial growth, as previously observed by other authors [ 20 ] for PLA films with FA incorporated by the spraying method.…”

Section: Resultsmentioning

confidence: 99%

“…However, it presents release problems due to the glassy state of the polymer at the product storage temperature and the subsequent low molecular mobility in the matrix, which prevents the effective release of the active compound into the food systems [ 16 ]. The latter results in low activity of the films [ 17 , 18 ], despite the compound’s high antioxidant and antibacterial capacity.…”

Section: Introductionmentioning

confidence: 99%

“…These bilayers, obtained by thermocompression, showed good interlayer adhesion and improved mechanical strength and barrier properties compared to the respective monolayers: lower water vapor permeability than the starch films and lower oxygen permeability than the polyester films. However, incorporating phenolic acids (ferulic, p -coumaric, and protocatechuic) into the food contact polyester layer was not effective in providing the films with antibacterial activity due to the limited diffusion of the active compounds in the polyester matrix [ 18 ]. Therefore, obtaining active materials with this type of compound and a polyester-based matrix requires a different incorporation strategy that facilitates the compound release and its antibacterial action.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Active Starch-Polyester Bilayer Films with Surface-Incorporated Ferulic Acid

2022

View full text Add to dashboard Cite

Bilayer films of cassava starch-based (with 10% gellan gum) and polylactic (PLA): Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) polyester blend (with 75% PLA) monolayers were obtained by melt-blending and compression-molding, and the subsequent thermocompressing of both monolayers. Ferulic acid (FA) was incorporated into the polyester sheet by spraying and drying. Films were characterized in terms of their microstructure and functional properties throughout two months of storage at 25 °C and 53% relative humidity. The laminates exhibited improved tensile and barrier properties compared to the respective monolayers, which makes them more adequate for food packaging purposes. Surface incorporation of ferulic acid did not significantly modify the barrier and mechanical properties of the films while providing them with antioxidant and antibacterial capacity when applied in aqueous systems, where a complete release of active compounds occurred. The physical properties of the bilayers and layer thermo-sealing were stable throughout storage. Likewise, the antioxidant and antimicrobial active properties were preserved throughout storage. Therefore, these active bilayers represent a sustainable packaging alternative to non-biodegradable, non-recyclable synthetic laminates for food packaging purposes, which could extend the shelf-life of food due to their antioxidant and antibacterial properties.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Active Starch-Polyester Bilayer Films with Surface-Incorporated Ferulic Acid

2022

View full text Add to dashboard Cite

show abstract

“…), high transparency, and inherent biodegradability [ 1 , 2 ]. However, PLA also presents some disadvantages for film production which hinder its industrial exploitation in the food packaging or agricultural sectors, such as its sensitivity to thermal degradation [ 2 ], poor barrier performance [ 3 ], and inherently brittle nature [ 4 ]. Its degradability in the environment requires specific conditions (compost medium at 58 °C, a pH around 7.5, relative humidity of 60%, a C/N relationship between 20:1 and 40:1, and proper aeration) to be met, even for short periods of time [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Plasticized Mechanical Recycled PLA Films Reinforced with Microbial Cellulose Particles Obtained from Kombucha Fermented in Yerba Mate Waste

et al. 2023

View full text Add to dashboard Cite

In this study, yerba mate waste (YMW) was used to produce a kombucha beverage, and the obtained microbial cellulose produced as a byproduct (KMW) was used to reinforce a mechanically recycled poly(lactic acid) (r-PLA) matrix. Microbial cellulosic particles were also produced in pristine yerba mate for comparison (KMN). To simulate the revalorization of the industrial PLA products rejected during the production line, PLA was subjected to three extrusion cycles, and the resultant pellets (r3-PLA) were then plasticized with 15 wt.% of acetyl tributyl citrate ester (ATBC) to obtain optically transparent and flexible films by the solvent casting method. The plasticized r3-PLA-ATBC matrix was then loaded with KMW and KMN in 1 and 3 wt.%. The use of plasticizer allowed a good dispersion of microbial cellulose particles into the r3-PLA matrix, allowing us to obtain flexible and transparent films which showed good structural and mechanical performance. Additionally, the obtained films showed antioxidant properties, as was proven by release analyses conducted in direct contact with a fatty food simulant. The results suggest the potential interest of these recycled and biobased materials, which are obtained from the revalorization of food waste, for their industrial application in food packaging and agricultural films.

show abstract

“…), high transparency, and its inherent biodegradability [1,2]. However, PLA also presents some disadvantages for film production which hinder its industrial exploitation in the food packaging or agricultural sectors such as its sensitivity to thermal degradation [2], its poor barrier performance [3], its inherently brittle nature [4], and its degradability in the environment requires specific conditions (compost medium at 58 °C, a pH around 7.5, relative humidity of 60%, a C/N relationship between 20:1 and 40:1, and proper aeration) to take place in shorts periods [5]. Moreover, the model of the linear economy generates high levels of plastic waste and creates a dependence between economic development and the entry of new virgin plastics into the system [6].…”

Section: Introductionmentioning

confidence: 99%

Plasticized Mechanical Recycled PLA Films Reinforced with Microbial Cellulose Particles Obtained from Kombucha Fermented in Yerba Mate Waste

Agüero¹,

Perianes²,

Muelas³

et al. 2022

Preprint

View full text Add to dashboard Cite

Yerba mate waste (YMW) were used to produce kombucha beverage, and the obtained microbial cellulose produced as by product (KMW) was used to reinforce mechanically recycled poly(lactic acid) (r-PLA) matrix. Microbial cellulosic particles were also produced in pristine yerba mate for comparison (KMN). To simulate the revalorization of industrial PLA products rejected during the production line, PLA was subjected to three extrusion cycles and the resultant pellets (r3-PLA) were then plasticized with 15 wt.% of acetyl tributyl citrate ester (ATBC) to obtain optically transparent and flexible films by solvent casting method. The plasticized r3-PLA-ATBC matrix was then loaded with KMW and KMN in 1 and 3 wt.%. The use of plasticizer allowed a good dispersion of microbial cellulose particles into the r3-PLA matrix, allowing to obtain flexible and transparent films which showed good structural and mechanical performance. Additionally, the obtained films showed antioxidant properties, as it was proven by release analyses conducted in direct contact with a fatty food simulant. The results suggest the potential interest of these recycled and biobased materials that are obtained from the revalorization of food waste for their industrial application in food packaging or agricultural films.

show abstract

Effect of active phenolic acids on properties of PLA-PHBV blend films

Cited by 19 publications

References 55 publications

Active Starch-Polyester Bilayer Films with Surface-Incorporated Ferulic Acid

Active Starch-Polyester Bilayer Films with Surface-Incorporated Ferulic Acid

Plasticized Mechanical Recycled PLA Films Reinforced with Microbial Cellulose Particles Obtained from Kombucha Fermented in Yerba Mate Waste

Plasticized Mechanical Recycled PLA Films Reinforced with Microbial Cellulose Particles Obtained from Kombucha Fermented in Yerba Mate Waste

Contact Info

Product

Resources

About