Green synthetic approach to prepare silver nanoparticles using longan ( Dimocarpus longan ) peel extract and evaluation of their antibacterial activities

Phongtongpasuk, Siriporn; Poadang, Sarinya; Yongvanich, Niti

doi:10.1016/j.matpr.2017.06.133

Cited by 12 publications

(5 citation statements)

References 25 publications

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“…The results demonstrate that the high negative charges proved the good stability of Tt-AgNPS due to phytochemical compounds of the brown alga T. turbinata that act as capping agents and prevent nanoparticle aggregation [41]. The zeta potential of nanoparticles with values more positive than +30 mV or more negative than −30 mV is reflected as being stable [42]. The negative charge of silver nanoparticles is due to the net charges around the nanoparticles, which come from bioactive compounds from the algal extract, such as the polyphenols compounds on Ag nanoparticles' surface [43].…”

Section: Nanoparticles' Characterizationmentioning

confidence: 90%

Antifungal Activities of Biogenic Silver Nanoparticles Mediated by Marine Algae: In Vitro and In Vivo Insights of Coating Tomato Fruit to Protect against Penicillium italicum Blue Mold

Hamouda,

Almaghrabi,

Alharbi

et al. 2024

Marine Drugs

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In an attempt to reduce such decay induced by pathogenic causes, several studies investigated the effectiveness of nanoparticles (NPs) that play a vital role in saving food products, especially fruits. Current research delves into biogenic silver nanoparticles (using marine alga Turbinaria turbinata (Tt/Ag-NPs) and their characterization using FT-IR, TEM, EDS, and zeta potential. Some pathogenic fungi, which cause fruit spoilage, were isolated. We studied the impact of using Tt/Ag-NPs to protect against isolated fungi in vitro, and the influence of Tt/Ag-NPs as a coating of tomato fruit to protect against blue mold caused by Penicillium italicum (OR770486) over 17 days of storage time. Five treatments were examined: T1, healthy fruits were used as the positive control; T2, healthy fruits sprayed with Tt/Ag-NPs; T3, fruits infected with P. italicum followed by coating with Tt/Ag-NPs (pre-coating); T4, fruits coated with Tt/Ag-NPs followed by infection by P. italicum (post-coating); and T5, the negative control, fruits infected by P. italicum. The results displayed that Tt/Ag-NPs are crystalline, spherical in shape, with size ranges between 14.5 and 39.85 nm, and negative charges. Different concentrations of Tt/Ag-NPs possessed antifungal activities against Botrytis cinerea, Rhodotorula mucilaginosa, Penicillium expansum, Alternaria alternate, and Stemphylium vesicarium. After two days of tomatoes being infected with P. italicum, 55% of the fruits were spoilage. The tomato fruit coated with Tt/Ag-NPs delayed weight loss, increased titratable acidity (TA%), antioxidant%, and polyphenol contents, and decreased pH and total soluble solids (TSSs). There were no significant results between pre-coating and post-coating except in phenol contents increased in pre-coating. A particular focus is placed on the novel and promising approach of utilizing nanoparticles to combat foodborne pathogens and preserve commodities, with a spotlight on the application of nanoparticles in safeguarding tomatoes from decay.

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Section: Nanoparticles' Characterizationmentioning

confidence: 90%

Antifungal Activities of Biogenic Silver Nanoparticles Mediated by Marine Algae: In Vitro and In Vivo Insights of Coating Tomato Fruit to Protect against Penicillium italicum Blue Mold

Hamouda,

Almaghrabi,

Alharbi

et al. 2024

Marine Drugs

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“…The physical and chemical characterization of these ultra-small AgNPs gives a helpful guideline showing that aqueous extracts of lemon, orange, grapefruit, and a mixture of these citrus peels can carry out an adequate reduction of silver ions and, in addition, stabilize their surface [ 45 ].…”

Section: Discussionmentioning

confidence: 99%

Ultra-Small Silver Nanoparticles: A Sustainable Green Synthesis Approach for Antibacterial Activity

et al. 2023

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The present study centers on the synthesis of ultra-small silver nanoparticles (AgNPs) with antibacterial properties using citrus peel residues (orange, lemon, and grapefruit) as reducing and stabilizing agents, and on assessing their antibacterial activity against multidrug-resistant clinical Staphylococcus aureus. The synthesized AgNPs were analyzed by various techniques, including UV-Vis spectroscopy, SAED, TEM, XRD, FTIR, and Raman. The results demonstrate the formation of ultra-small, monodisperse, quasi-spherical AgNPs with an average particle size of 2.42 nm for AgNPs produced with mixed extracts. XRD analysis indicated that the AgNPs have a crystal size of 9.71 to 16.23 nm. The AgNPs exhibited potent inhibitory activity against resistant S. aureus, with a minimum inhibitory concentration (MIC) of 15.625 to 62.50 ppm. The findings suggest that the ultra-small nanometer size of the AgNPs could be attributed to the synthesis method that employs ambient conditions and the presence of polyphenolic compounds from citrus peel. Consequently, AgNPs obtained through sustainable green synthesis hold significant potential in combating clinical multi-resistant bacterial strains that are challenging to treat and eradicate. This approach also contributes to the revaluation of citrus residues in the region, which is an ongoing environmental issue today.

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“…Fast growing plant species have become more promising as alternative non-wood fiber sources to solve the gap between wood fiber demand and supply. Although there are a variety of biopolymers available, cellulose still stands out as a practical selection for packaging beyond its current use in The biosynthesis of silver nanoparticles using aqueous of longan peel have been reported for the activity to prevent the growth of bacteria, but there was no antibacterial activity on Pseudomonas aeruginosa, E. coli, Bacillus subtilis and S. aureus when using only the aqueous longan peel extracted by distilled water [33,34]. In contrast to peel extract, the antibacterial activity was observed in longan seed extracted by a mixture of ethanol and water.…”

Section: Discussionmentioning

confidence: 99%

“…Without coating of longan peel extract, the non-coated-RSP had no antimicrobial activity (Table 3). The biosynthesis of silver nanoparticles using aqueous of longan peel have been reported for the activity to prevent the growth of bacteria, but there was no antibacterial activity on Pseudomonas aeruginosa, E. coli, Bacillus subtilis and S. aureus when using only the aqueous longan peel extracted by distilled water [33,34]. In contrast to peel extract, the antibacterial activity was observed in longan seed extracted by a mixture of ethanol and water.…”

Section: Antibacterial Activity Of Rsp With and Without Longan Peel Extract Coatingmentioning

confidence: 99%

Eco-Friendly Rice Straw Paper Coated with Longan (Dimocarpus longan) Peel Extract as Bio-Based and Antibacterial Packaging

et al. 2021

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This study aimed to develop active paper from rice straw fibers with its function as antibacterial activity obtained from longan (Dimocarpus longan) peels. The morphology and mechanical properties of fibers of rice straw were examined as quality parameters for paper production. Rice straw paper (RSP) with basis weight ca 106.42 g/m2, 0.34 mm thickness, 34.15% brightness, and 32.26 N·m/g tensile index was successfully prepared from fibers and pulps without chemical bleaching process. Bioactive compounds of longan peels were extracted using maceration technique with a mixture of ethanol-water, and subsequently coated onto RSP at concentration of 10%, 15% and 20% (w/v). Fourier transform infrared (FTIR) spectroscopic analysis demonstrated the functional groups of phytochemicals in the peel extract. The results of physical properties showed that the coated RSP had similar thickness and tensile index, but had lower brightness compared to control papers. Scanning electron microscopy (SEM) confirmed the significantly different of surface and cross-section structures between coated and uncoated RSP. The coated RSP had relatively greater barrier properties to prevent water absorption. In addition, the RSP coated with longan peel extracts showed significant antibacterial activity against foodborne bacteria, Staphylococcus aureus and Bacillus cereus. This study reveals the benefits of natural byproducts as potential materials for active packaging prepared by environmentally friendly processes.

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Green synthetic approach to prepare silver nanoparticles using longan ( Dimocarpus longan ) peel extract and evaluation of their antibacterial activities

Cited by 12 publications

References 25 publications

Antifungal Activities of Biogenic Silver Nanoparticles Mediated by Marine Algae: In Vitro and In Vivo Insights of Coating Tomato Fruit to Protect against Penicillium italicum Blue Mold

Antifungal Activities of Biogenic Silver Nanoparticles Mediated by Marine Algae: In Vitro and In Vivo Insights of Coating Tomato Fruit to Protect against Penicillium italicum Blue Mold

Ultra-Small Silver Nanoparticles: A Sustainable Green Synthesis Approach for Antibacterial Activity

Eco-Friendly Rice Straw Paper Coated with Longan (Dimocarpus longan) Peel Extract as Bio-Based and Antibacterial Packaging

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