Phytosynthesis of silver nanoparticles from aqueous leaf extracts of <i>Piper colubrinum</i>: characterisation and catalytic activity

Santhoshkumar, R.; Parvathy, A. Hima; Soniya, E. V.

doi:10.1080/17458080.2021.1970140

Cited by 20 publications

(11 citation statements)

References 43 publications

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“…Nanoparticles are good catalysts because of their high surface to volume ratio and specific surface plasmon resonance [ 57 ]. Any plasmonic excitation helps them to release surface electrons from the outermost band [ 58 ].…”

Section: Discussionmentioning

confidence: 99%

Diatom Mediated Production of Fluorescent Flower Shaped Silver-Silica Nanohybrid

et al. 2021

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Fabrication of flower-like nanostructures are gaining attention because of their high surface/volume ratio and extensive adsorption capacity. In the present investigation, flower-shaped, autofluorescent silver-silica (Ag-SiO2) hybrid nanoparticles have been fabricated exploiting diatoms as a source of nanosilica. Two different species of Gedaniella including G. flavovirens and G. mutabilis showed their efficacy in synthesizing fluorescent Ag-SiO2 nanoflowers (NFs) and nanospheres (NSs) against 9 mM silver nitrate solution, respectively. The biogenic nanoconjugate (Ag-SiO2) was characterized by Uv-vis spectroscopy, energy dispersive X-ray spectroscopy (EDS), scanning (SEM) and transmission (TEM) electron microscopy. Production of Ag-SiO2 hybrid nanoparticle was confirmed by observing both Ag and Si signals from a single nanoparticle in an EDS study. The broad and single absorption band at ~420 nm in Uv-vis spectroscopy confirmed proper miscibility and production of hybrid nanoparticles. The Ag-SiO2 nanohybrids revealed autofluorescent property under the blue light region (excitation ~450–490 nm). SEM images of particles synthesized by G. flavovirens revealed the production of microscopic flower shaped Ag-SiO2 particles with several layers of petals. A TEM study confirmed that the synthesized Ag-SiO2 NFs are variable in size with 100–500 nm in diameter. Decolorization of methylene blue after exposure to Ag-SiO2 particles confirmed catalytic activity of synthesized nanostructures. This eco-friendly method provides a new dimension in nanobiotechnology for biogenesis of such hierarchical nanostructure in a cost-effective way.

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Section: Discussionmentioning

confidence: 99%

Diatom Mediated Production of Fluorescent Flower Shaped Silver-Silica Nanohybrid

et al. 2021

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“…investigations also reported the spheroidal morphological structure with stabilizing agents [30,49,50].…”

Section: Plos Onementioning

confidence: 91%

“…minimization of decay process as well as inhibition of ethylene production showed the shelf life enhancement in different fruit cultivars [30,55].…”

Section: Plos Onementioning

confidence: 94%

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Green synthesized silver nanoparticles from eucalyptus leaves can enhance shelf life of banana without penetrating in pulp

Nayab

Akhtar

2023

PLoS ONE

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Bananas are exposed to serious post-harvest problems resulting in agricultural and economic losses across the world. The severity of problem is linked with the process of rapid ripening and pathogens attack. Such problems have led to economic losses as well as a lower yield of nutritionally rich bananas. The global demand to increase the life span of bananas and their protection from pathogens-borne diseases urged the use of antimicrobial edible coatings of nanoparticles. The present experiment has explored the innovative development of green synthesized nanoparticles from Eucalyptus leaf extract (ELE) to increase the shelf life of bananas up to 32 days from the day of collection. Statistically significant results were recorded (P = 0.05) by applying five different concentrations of silver nanoparticles (AgNPs) in ranges of 0.01–0.05%. Various morphological and physiological parameters such as color, decay, firmness, weight loss, pulp to peel ratio, pH, titrable acidity (TA), phenolic contents, protein estimation, ethylene production, starch content and total soluble sugars were measured in Cavendish banana (Basrai). Bananas treated with 0.01% AgNPs showed maximum control on its ripeness over morphological and physiological changes. The increase in shelf life was in order 0.01%>0.02%>0.03%>0.04%>0.05%> control. Further, AgNPs reduced the process of ripening by controlling ethylene production. The result has also proved the safety of banana consumption by simple removal of banana peel as penetration of AgNPs from the peel to the pulp was not detected. It is recommended to use 0.01% AgNPs to enhance the shelf life of banana without effecting its nutritive value.

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“…P. colubrinum deserves attention because it is resistant to the fungal pathogen oomycetous Phytophthora capsici [17,18], as well as nematodes such as Meloidogyne incognita and Radopholus similis, which cause the loss of large yields in black pepper cultivation [19][20][21]. P. colubrinum also has other biological potentials, like antifungal and antioxidant properties [22].…”

Section: Introductionmentioning

confidence: 99%

Occurrence and distribution of Badnavirus in six Piper species in Java

Hardiyanti,

Miftakhurohmah,

Sari

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Badnavirus, a member of the Caulimoviridae family, is known to cause economic losses in various crops, including Piper spp. However, there is no information on Badnavirus infection in Piper spp. and its distribution in Java. The aim of this study was to determine the presence of Badnavirus in Piper spp and its distribution in Java. The research included field observation, sample collection, and virus detection by PCR. A total of 96 samples of Piper spp. were collected from West Java, Central Java and Yogyakarta Province. The degenerate primer Badna FP and RP were successfully used to amplify DNA fragments of 600 bp from leaf samples. Within the Java region, six species of Piper were identified, namely P. betle, P. crocatum, P. retrofractum, P. sarmentosum, P. cubeba, and P. colubrinum. These species were found in both Bogor and Bogor Regency. In Sleman and Magelang, P. betle, P. crocatum, and P. retrofractum were present, while in Yogyakarta only P. betle and P. crocatum were found. Five species of Piper were infected by Badnavirus, except for P. colubrinum, which remained free from infection. This research was proven that Badnavirus has infected members of Piper spp. and has spread throughout the Java Region.

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Phytosynthesis of silver nanoparticles from aqueous leaf extracts of Piper colubrinum: characterisation and catalytic activity

Cited by 20 publications

References 43 publications

Diatom Mediated Production of Fluorescent Flower Shaped Silver-Silica Nanohybrid

Diatom Mediated Production of Fluorescent Flower Shaped Silver-Silica Nanohybrid

Green synthesized silver nanoparticles from eucalyptus leaves can enhance shelf life of banana without penetrating in pulp

Occurrence and distribution of Badnavirus in six Piper species in Java

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