Cellulose Acetate Butyrate Nanocomposites with Antimicrobial Properties for Food Packaging

Quintero, Rosa; Rodríguez, Francisco; Bruna, Julio E.; Guarda, Abél; Galotto, María José

doi:10.1002/pts.1981

Cited by 28 publications

(17 citation statements)

References 45 publications

(110 reference statements)

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“…The same effect was shown on previous works, where cinnamon and carvacrol were added as antimicrobial agents in cellulose acetate butyrate/ modified motmorillonite (Cloisite20A and Cloisite30B) nanocomposites 27 .…”

Section: Thermal Characterizationsupporting

confidence: 84%

“…The nanocomposite spectrum presented the presence of bands in the zone of absorption of the silicate groups between 900 -1100 cm -1 confirming the incorporation of the nanoclays in LLDPE matrix ( Figure 5). Exactly the bands found were at 460 cm -1 (Si-O-Si bending), 520 cm -1 (Si-OAl bending), 1040 cm -1 (Si-O stretching), and at 1075 cm -1 (-OH bending from absorbed water) [27][28][29][30][31][32][33][34][35] . In the case of active materials, it is possible to observe the characteristic bands for thymol, at 730 and 805 cm -1 owing to ring vibrations of aromatic groups 36 .…”

Section: Fourier Transform Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

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Effect of Organoclay Incorporation on Thermal, Physical and Morphological Properties of Lldpe Nanocomposites for Active Food Packaging Applications

Torres

Dicastillo

Ríos

et al. 2014

J. Chil. Chem. Soc.

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Active films based on nanocomposites from linear low-density polyethylene (LLDPE) were prepared by melting extrusion incorporating Cloisite 30B (5 wt.%) and thymol as active compound at two different concentrations: 2 and 4 wt.%. A complete thermal, structural characterization and antioxidant capacity of all blends was carried out. Extraction procedures revealed final concentrations of thymol in the film between 40-80 % of the thymol that was initially included in the films formulation. Materials with 2 and 4 % of thymol presented similar antioxidant capacity. XRD results indicated a slightly lower degree of intercalation in the nanocomposites with thymol, due probably to the lower compatibility between the hydrophilic character of the clays, and the hydrophobic thymol substance. The addition of the antioxidant improved slightly the thermal stability of the polymer.

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Section: Thermal Characterizationsupporting

confidence: 84%

Section: Fourier Transform Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

Effect of Organoclay Incorporation on Thermal, Physical and Morphological Properties of Lldpe Nanocomposites for Active Food Packaging Applications

Torres

Dicastillo

Ríos

et al. 2014

J. Chil. Chem. Soc.

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“…Overall, both clay and Th additives caused an obvious decrease in the relative intensity of the first hump, indicating an alteration in the intermolecular distance between the CA and TEC. This result may be due to the occurrence of interactions, mostly hydrogen bonds, between the polar groups of pC and those of AgM as well as the hydroxyl groups of Th, which is expected to display the characteristic EOs plasticizing effect [26,27,32,55,56].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Cellulose acetate/AgNPs-organoclay and/or thymol nano-biocomposite films with combined antimicrobial/antioxidant properties for active food packaging use

Dairi

Ferfera-Harrar

Ramos

et al. 2019

International Journal of Biological Macromolecules

141

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Nano-biocomposite films based on plasticized cellulose acetate/triethyl citrate (CA/TEC) were prepared with silver nanoparticles (AgNPs)/gelatin-modified montmorillonite nanofiller (AgM) and thymol (Th). AgNPs were biosynthesized in situ the clay using Curcuma longa (C. longa) tuber extract. Full characterization of clay and the formulated films was conducted including morphological, physical and functional properties. From the results, the AgNPs showed spherical shape, face centred cubic crystalline structure, and small average size with narrow distribution.Intercalated structure of films was achieved with some exfoliated platelets and clay aggregates. The glass transition temperature (Tg) of CA increased slightly by the added clay but decreased by Th due to its plasticizing effect. Also, the thermal stability of CA was enhanced only by the added clay.Increasing contents of both additives into films declined the optical clarity but enhanced greatly the UV barrier ability. The clay improved the tensile and oxygen barrier properties, while the Th initiated an antagonist effect. Besides, the radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) tests highlighted antioxidant activities of Th-included films. The films showed antimicrobial activities against bacteria and fungi, where Escherichia Coli (E. Coli) was the most sensitive, with an efficient growth inhibition in vapour-phase method. These materials with antimicrobial/antioxidant properties are promising active packaging. ACCEPTED MANUSCRIPTSilver nanoparticles (AgNPs) are arch inorganic products from the nanotechnology field that have gained boundless interests in packaging applications thanks to their unique properties, such as large surface areas, high thermal stability, and antimicrobial activity. In this context, the incorporation of AgNPs into films packaging as an efficient antimicrobial agent to prevent microbial proliferation on food contact surfaces has emerged [9]. However, there is a need to develop a variety of high-yield and low cost green routes for the synthesis of silver nanoparticles.In this way, the biogenic synthesis of AgNPs mediated by plants has gained widespread interest as safer alternative to common methods, namely chemical, microbial, and physical (UV irradiation, microwave processing, thermal decomposition, electrolysis, ect) processes. This eco-friendly process is beneficial due to its cost effectiveness, non-pathogenic and easily scaled up for large-scale synthesis. Also, there is no need to use high temperature, pressure, energy and toxic chemicals for production. In this context, numerous reports have been published [10-12] concerning the biosynthesis of AgNPs using extracts of different plant parts such as root, stem, bark, leaf, fruit, flowers, and latex as natural resources. Phytocompounds in the plant extracts serve generally as reducing and capping agents in the reaction with silver nitrate (AgNO 3 ), a commonly used precursor in silver nanoparticles synthesis. This dual action is originated from the combined effects of biomolec...

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“…Subsequently obtained mixtures were sonicated for 20 minutes at room temperature. Finally the mixtures were deposited on Petri dishes (20 cm in diameter), drying at 40 °C for 2 h and further dried at 40 °C in a vacuum oven to remove the remaining solvent 46 , obtaining films of about 90 µm of thickness.…”

Section: Nanocomposites Preparationmentioning

confidence: 99%

DEVELOPMENT OF ANTIBACTERIAL MtCu/PLA NANOCOMPOSITES BY CASTING METHOD FOR POTENTIAL USE IN FOOD PACKAGING

Bruna

Quilodrán

Guarda

et al. 2015

J. Chil. Chem. Soc.

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Polylactic acid (PLA) nanocomposites with two antimicrobial agents based on copper modified montmorillonite (MtCu 2+ and MtCu 0 ) were developed in order to obtain a lower environmental impact material with antimicrobial activity for potential use in food packaging. Clay modification was permorfed by cation exchange between MtNa + and a copper salt obtaining MtCu 2+ and its followed reduction with NaBH 4 obtaining MtCu 0 . Then PLA nanocomposite films (MtCu 2+ / PLA and MtCu 0 /PLA), using different concentration of MtCu 2+ and MtCu 0 (1, 3 and 5 wt.%) were obtained by casting technique. X-ray diffraction (XRD) and Transmission electronic microscopy (TEM) analysis evidenced a certain degree of intercalation of the modified clays in the nanocomposites. Thermal, mechanical and optical properties showed variations by incorporating MtCu 2+ and MtCu 0 in the polymer matrix. On the other hand, it was possible to evidence antimicrobial activity of the nanocomposites (ASTM Standard E2149) against to Escherichia coli ATCC 25922 and Listeria innocua ATCC 33090 obtaining a 99% maximum of reduction to both bacteria.

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Cellulose Acetate Butyrate Nanocomposites with Antimicrobial Properties for Food Packaging

Cited by 28 publications

References 45 publications

Effect of Organoclay Incorporation on Thermal, Physical and Morphological Properties of Lldpe Nanocomposites for Active Food Packaging Applications

Effect of Organoclay Incorporation on Thermal, Physical and Morphological Properties of Lldpe Nanocomposites for Active Food Packaging Applications

Cellulose acetate/AgNPs-organoclay and/or thymol nano-biocomposite films with combined antimicrobial/antioxidant properties for active food packaging use

DEVELOPMENT OF ANTIBACTERIAL MtCu/PLA NANOCOMPOSITES BY CASTING METHOD FOR POTENTIAL USE IN FOOD PACKAGING

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