Effect of greenly synthetized silver nanoparticles on the properties of active starch films obtained by extrusion and compression molding

Ceballos, Rocío L.; Bilderling, Catalina von; Guz, Lucas; Bernal, Celina Raquel; Famá, Lucía

doi:10.1016/j.carbpol.2021.117871

Cited by 47 publications

(36 citation statements)

References 90 publications

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“…1639 cm −1 corresponded to the stretching vibrations C═O, 35,38 and absorption of water by the starch molecules 38,41 . Finally, band with a peak at 1735 cm −1 was associated with the carbonyl group; 39 2881 and 2921 cm −1 concerned the axial stretch connections CH sp 3 of glycerol; 42 and broadband in 3276 cm −1 was related to the stretching of OH 38,42 …”

Section: Resultsmentioning

confidence: 99%

“…41 1639 cm À1 corresponded to the stretching vibrations C═O, 35,38 and absorption of water by the starch molecules. 38,41 Finally, band with a peak at 1735 cm À1 was associated with the carbonyl group; 39 2881 and 2921 cm À1 concerned the axial stretch connections CH sp 3 of glycerol; 42 and broadband in 3276 cm À1 was related to the stretching of O H. 38,42 The spectra of films with 10%, 20%, and, 30% MOPN showed the same peaks of the spectrum of the film control (0% MOPN), with peaks at 1323, 1634, 2921 cm À1 being present in both MOPN powdered and starch-based film with 0% of MOPN. In the broad band at 3276 cm À1 , a shift in relation to the spectrum of powder MOPN was observed, which could be attributed to the occurrence of hydrogen bonds between the components that form the films.…”

Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 99%

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Development and characterization of starch‐based films added ora‐pro‐nobis mucilage and study of biodegradation and photodegradation

Oliveira

Silva

et al. 2022

J of Applied Polymer Sci

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Ora‐pro‐nobis mucilage (MOPN) was incorporated into starch films to improve their mechanical, chemical, and retrogradation properties. Films were made in four MOPN content (0%, 10%, 20%, and 30%) by casting. Films with added MOPN presented antioxidant capacity varying from 3.9% to 23.3%. Chemical cross‐links between starch and MOPN were observed in Fourier transform infrared spectroscopy (FTIR) spectrum, resulting in a reinforced network with the greater young modulus (0.02 Pa, control‐film, to 2.20 Pa, 30%‐MOPN), higher tensile strength (1.34 Pa, control‐film, to 4.38 Pa, 30%‐MOPN), and reduction in elongation (250.32%, control‐film, to 6.55%, 30%‐MOPN). Water vapor permeability did not differ statistically between films. In assays photodegradation, higher MOPN content exhibited less shrinkage of films over time and more loss mass in films during 28 days. FTIR spectrum showed that the films increased crystalline regions during storage, which resulted in stronger aggregation between aligned helices. In addition, water molecules were released which allowed a better alignment of the starch chains. Starch‐based films added MOPN can alternatively be used as active biodegradable packaging since it is able to form cohesive, flexible films and with antioxidant action. Furthermore, MOPN, especially 30% addition, reduces drastic changes in mechanical properties over time.

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Section: Resultsmentioning

confidence: 99%

Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 99%

Development and characterization of starch‐based films added ora‐pro‐nobis mucilage and study of biodegradation and photodegradation

Oliveira

Silva

et al. 2022

J of Applied Polymer Sci

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“…After successfully obtaining 3D-printed CMC-based cushioning aerogels, chitosan/ AgNPs were immobilized inside the aerogels by coaxial 3D-printing technology to achieve dual functions of cushioning and antibacterial for meeting the practical application requirements. It can be seen that a wide absorption peak in the 400-500 nm region was observed in the ultraviolet spectrum (Figure 5a), indicating that AgNPs have been successfully synthesized [17]. There were five characteristic peaks in the X-ray diffraction spectrum of AgNPs, located at 38.2 • , 44.4 • , 64.6 • , 77.4 • , and 81.6 • , corresponding to the (111), ( 200), ( 220), (311), and (222) crystal planes of AgNPs, respectively (Figure 5c).…”

Section: Characterization Of 3d-printed Cushioning-antibacterial Packaging Aerogelsmentioning

confidence: 95%

3D-Printed Nanocellulose-Based Cushioning–Antibacterial Dual-Function Food Packaging Aerogel

et al. 2021

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Cushioning and antibacterial packaging are the requirements of the storage and transportation of fruits and vegetables, which are essential for reducing the irreversible quality loss during the process. Herein, the composite of carboxymethyl nanocellulose, glycerin, and acrylamide derivatives acted as the shell and chitosan/AgNPs were immobilized in the core by using coaxial 3D-printing technology. Thus, the 3D-printed cushioning–antibacterial dual-function packaging aerogel with a shell–core structure (CNGA/C–AgNPs) was obtained. The CNGA/C–AgNPs packaging aerogel had good cushioning and resilience performance, and the average compression resilience rate was more than 90%. Although AgNPs was slowly released, CNGA/C–AgNPs packaging aerogel had an obvious antibacterial effect on E. coli and S. aureus. Moreover, the CNGA/C–AgNPs packaging aerogel was biodegradable. Due to the customization capabilities of 3D-printing technology, the prepared packaging aerogel can be adapted to more application scenarios by accurately designing and regulating the microstructure of aerogels, which provides a new idea for the development of food intelligent packaging.

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“…Post compression, the welded materials are cut and processed to elaborate sustainable edible packaging systems [58]. Various raw materials to form nanocomposites can be used as mentioned in Section 3.1, but starches, particularly, cassava starch have excellent properties and show less degenerative changes when subjected to compression molding [75]. This technique has not yet gained popularity for manufacturing edible films but is a fast and economical method and needs to be adapted to suit the edible film packaging industry [71].…”

Section: Compression Moldingmentioning

confidence: 99%

Natural Antimicrobials as Additives for Edible Food Packaging Applications: A Review

Punia

Chaudhary

Thakur

et al. 2021

Foods

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Edible packaging is a swiftly emerging art of science in which edible biopolymers like lipids, polysaccharides, proteins, resins, etc., and other consumable constituents extracted from various non-conventional sources are used alone or imbibed together. Edible packaging with antimicrobial components had led to the development of the hypothesis of active packaging which safeguards the quality of foods as well as health of consumers. Natural antimicrobial agents (NAMAs) like essential oils from spices, bioactive compounds derived from vegetables and fruits, animal and microorganism derived compounds having antimicrobial properties can be potentially used in edible films as superior replcement for synthetic compounds, thus serving the purpose of quality and heath. Most of the natural antimicrobial agents enjoy GRAS status and are safer than their synthetic counterparts. This review focuses on updated literature on the sources, properties and potential applications of NAMAs in the food industry. This review also analyzes the biodegradability and biocompatibility and edibility properties of NAMAs enriched films and it can be concluded that NAMAs are better substitutes but affect the organoleptic as well as the mechanical properties of the films. Despite many advantages, the inclusion of NAMAs into the films needs to be investigated more to quantify the inhibitory concentration without affecting the properties of films and exerting potential antimicrobial action to ensure food safety.

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Effect of greenly synthetized silver nanoparticles on the properties of active starch films obtained by extrusion and compression molding

Cited by 47 publications

References 90 publications

Development and characterization of starch‐based films added ora‐pro‐nobis mucilage and study of biodegradation and photodegradation

Development and characterization of starch‐based films added ora‐pro‐nobis mucilage and study of biodegradation and photodegradation

3D-Printed Nanocellulose-Based Cushioning–Antibacterial Dual-Function Food Packaging Aerogel

Natural Antimicrobials as Additives for Edible Food Packaging Applications: A Review

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