Biosynthesis of Silver Nanoparticles from Persimmon Byproducts and Incorporation in Biodegradable Sodium Alginate Thin Film

Ramachandraiah, Karna; Gnoc, Nguyen Trong Bao; Chin, Koo Bok

doi:10.1111/1750-3841.13865

Cited by 20 publications

(11 citation statements)

References 33 publications

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“…A review of the literature shows that the production of nanoparticles by this approach is easy, fast and cost-effective [23,24]. Recently, agro-industrial wastes have been investigated as potential starting materials for the green synthesis of nanoparticles [12][13][14]25]. However, there are still few reports in the literature that explore their suitability for such applications.…”

Section: Discussionmentioning

confidence: 99%

“…Recently, as a further step towards the development of greener and more sustainable processes, attempts have been made to replace plant parts with agro-industrial wastes. For example, a study on persimmon waste investigated the suitability of each of the waste fractions: The seeds, the peels and the calyces, for producing Ag-NPs [12]. All of them were capable of synthesizing the nanoparticles, although the kinetics of nanoparticle formation and the particle size were found to depend on the waste fraction used.…”

Section: Introductionmentioning

confidence: 99%

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Green Synthesis of Silver Nanoparticles Using Bilberry and Red Currant Waste Extracts

et al. 2019

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The production of silver nanoparticles (Ag-NPs) from bilberry waste (BW) and red currant waste (RCW) extracts was studied. Red fruit extracts were obtained by treating BW and RCW with aqueous ethanol (50% v/v) at 40 °C. The formation of nanoparticles was monitored spectrophotometrically by measuring the intensity of the surface plasmon resonance band (SPR) of silver. The effects of temperature (20–60 °C) and pH (8–12) on the reaction kinetics and on the properties of Ag-NPs were investigated. Characterization by XRD and dynamic light scattering (DLS) techniques showed that Ag-NPs were highly crystalline, with a face-centered cubic structure and a hydrodynamic diameter of 25–65 nm. The zeta potential was in the range of −35.6 to −20.5 mV. Nanoparticles obtained from BW were slightly smaller and more stable than those from RCW. A kinetic analysis by the initial-rate method showed that there was an optimum pH, around 11, for the production of Ag-NPs. Overall, the results obtained suggest that BW and RCW can be advantageously used as a source of reducing and stabilizing agents for the green synthesis of Ag-NPs.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Silver Nanoparticles Using Bilberry and Red Currant Waste Extracts

et al. 2019

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“…Simultaneously, sodium alginate has good adhesiveness and gel properties, which causes ion exchange reactions with cationic materials to form sodium alginate gels or electrostatic layers of edible coatings to cover the surfaces of fruits and vegetables. Thus, this material can prevent the reproduction of microorganisms [24].…”

Section: Introductionmentioning

confidence: 99%

Effect of Chitosan- and Alginate-Based Coatings Enriched with Cinnamon Essential Oil Microcapsules to Improve the Postharvest Quality of Mangoes

et al. 2019

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During this study, fresh mangoes were packed into multilayer coatings made from chitosan containing cinnamon essential oil microcapsules and alginate solutions that were alternately deposited on the mango surfaces by electrostatic interaction. We then compared the physical and chemical indexes to examine the changes in the mangoes during 14 d of storage. The results showed that the microcapsules prepared in the experiment were of uniform size, with the sustained release of essential oil exceeding 168 h. Compared with uncoated mangoes, the mangoes coated with the coatings could effectively inhibit the decrease of the titratable acid, soluble solids, and vitamin C contents; slow down the increase of the weight loss and pH; delay the appearance of mango respiration peaks; and preserve the firmness at storage conditions of 25 °C and 50% RH. Our findings revealed that mangoes without treatment showed losses in their edible and commercial value after 14 days in storage, and the mangoes coated with five layers still retained food and commercial value. Cross-sectional scanning electron microscopy images of the coatings showed that they had distinct layers and were of good uniformity and tight binding, and they also had good adhesion to the mango surface. These findings provide important insights into the use of coatings for the packaging of fruits during storage, which is essential for promoting the application of coatings for packaging preservation without big cost and expensive equipment.

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“…Silver (Ag) frequently served as a nanofiller in food packaging materials owing to its antibacterial characteristics. Numerous methods were used to synthesize Ag nanoparticles (AgNPs) [11,12], but only few researchers [13,14,15] applied Alg in fabricating AgNPs. The AgNPs were fabricated by Liu et al [16], who used Alg as a stabilizer under gamma radiation.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Cellulose Nanocrystal/Silver/Alginate Bionanocomposite Films with Enhanced Mechanical and Barrier Properties for Food Packaging Application

2019

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Eco-friendly cellulose nanocrystal/silver/alginate (CNC/Ag/Alg) bionanocomposite films were successfully prepared by blending of CNC with Ag/Alg solution. The CNC was fabricated from cellulose microcrystal (CMC) by acid hydrolysis method. The Ag nanoparticles (AgNPs) were generated by using Alg as a reducing agent through hydrothermal process. AgNPs-included composite films showed characteristic plasmonic effect of the AgNPs with the maximum absorption at 491 nm and they also showed high ultraviolet (UV) barrier properties. The CNC/Ag/Alg composite films were analyzed by using scanning electron microscopy, transmission electron microscopy, optical microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction technique. Depending on the type of nanofillers, tensile strength of the composite films increased by 39–57% and water vapor permeation decreased by 17–36% compared with those of the neat Alg films. The Ag/Alg and CNC/Ag/Alg films showed brown color as detected from the increase of both ‘b’ and ‘a’ parameters by colorimeter. The UV and water barrier properties of Alg based composite films were found higher than the Alg films. The obtained results suggested that the prepared composite films can be used in food packaging applications.

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Biosynthesis of Silver Nanoparticles from Persimmon Byproducts and Incorporation in Biodegradable Sodium Alginate Thin Film

Cited by 20 publications

References 33 publications

Green Synthesis of Silver Nanoparticles Using Bilberry and Red Currant Waste Extracts

Green Synthesis of Silver Nanoparticles Using Bilberry and Red Currant Waste Extracts

Effect of Chitosan- and Alginate-Based Coatings Enriched with Cinnamon Essential Oil Microcapsules to Improve the Postharvest Quality of Mangoes

Fabrication of Cellulose Nanocrystal/Silver/Alginate Bionanocomposite Films with Enhanced Mechanical and Barrier Properties for Food Packaging Application

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