Effect of Silver Nitrate (AgNO3) and Nano-Silver (Ag-NPs) on Physiological Characteristics of Grapes and Quality during Storage Period

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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“…respiration rate in peel by lowering oxygen level and increasing CO 2 level which is an inhibitor of starch breakdown [58, 77,78].…”

Section: Plos Onementioning

confidence: 99%

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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“…According to Subhashini et al (2011), Ag++ ions help to prolong the vase life, while Ca++ ions reduce the respiratory rate and contribute to cell wall toughness, preventing cell breakage or collapse. The broad antimicrobial effects of AgNO3 are well-known, as Ag++ ions replace the hydrogen cations (H+) of sulfhydryl or thiol groups (-SH) on the cell membranes of bacteria, resulting in membrane integrity loss and cell death (Feng et al, 2000;Elatafi and Fang, 2022). Several researchers (Jiang et al, 2004;Foldbjerg et al, 2009;Elatafi and Fang, 2022) have revealed that Ag nanoparticles (Ag-NPs) are more effective than other forms of Ag because they possess a larger surface area-to-volume ratio, making them more efficient as a biocide.…”

Section: Chemicals Based Preservativesmentioning

confidence: 99%

“…The broad antimicrobial effects of AgNO3 are well-known, as Ag++ ions replace the hydrogen cations (H+) of sulfhydryl or thiol groups (-SH) on the cell membranes of bacteria, resulting in membrane integrity loss and cell death (Feng et al, 2000;Elatafi and Fang, 2022). Several researchers (Jiang et al, 2004;Foldbjerg et al, 2009;Elatafi and Fang, 2022) have revealed that Ag nanoparticles (Ag-NPs) are more effective than other forms of Ag because they possess a larger surface area-to-volume ratio, making them more efficient as a biocide. Additionally, Ag-NPs have lower toxicity effects and optimize the content of soluble solids (SSC), titratable acidity (TA), malondialdehyde (MDA), as well as the activities of polyphenol oxidase (PPO), pyrogallol peroxidase (POD), and pectin methylesterase (PME).…”

Section: Chemicals Based Preservativesmentioning

confidence: 99%

Review of recent advances in post-harvest techniques for tropical cut flowers and future prospects: Heliconia as a case-study

Malakar

Paiva

Beruto³

et al. 2023

Front. Plant Sci.

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Aesthetic attributes and easy-to-grow nature of tropical cut flowers (TCFs) have contributedto their potential for increased production. The dearth of information regarding agronomic practices and lack of planting materials are the key hindrances against their fast expansion. Unconventional high-temperature storage requirements and the anatomy of the peduncle contribute topoor vase life performance, while troublesome packaging and transport due to unusual size and structureprimarily cause post-harvest quality deterioration. Nonetheless, the exotic floral structuresconsequently increase market demand, particularly in temperate countries. This boosts studies aimed at overcoming post-harvest hindrances. While a few TCFs (Anthurium, Strelitzia, Alpinia, and a few orchids) are under the spotlight, many others remain behind the veil. Heliconia, an emerging specialty TCF (False Bird-of-Paradise, family Heliconiaceae), is one of them. The structural uniquenessand dazzling hues of Heliconia genotypes facilitate shifting its position from the back to the forefrontof the world floriculture trade. The unsatisfactory state-of-the-art of Heliconia research and the absence of any review exclusively on it are the key impetus for structuring this review. In addition to the aforementioned setbacks, impaired water uptake capacity after harvest, high chilling sensitivity, and the proneness of xylem ducts to microbial occlusion may be counted as a few additional factors that hinder its commercialization. This review demonstrates the state-of-the-art of post-harvest research while also conceptualizing the implementation of advanced biotechnological aid to alleviate the challenges, primarily focusing on Heliconia (the model crop here) along with some relevant literature on its other allied members. Standard harvesting indices, grading, and packaging are also part of the entire post-harvest operational chain, but since these phases are barely considered in Heliconia and the majority of tropical ornamentals except a few, a comprehensive account of these aspects has also been given. The hypothesized cues to nip chilling injury, resorting to different bio-chemical treatments, nano-based technology, and advanced packaging techniques, may help overcome preservation difficulties and propel its transition from niche to the commercial flower market. In a nutshell, readers will gain a comprehensive overview of how optimum post-harvest handling practices can rewardingly characterize this unique group of TCFs as the most remunerative component.

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“…In comparison with AgNO 3 , AgNPs release ions (Ag + ) that can block the ethylene receptor by replacing the copper ion cofactor of the ethylene binding site. According to Elatafi and Fang [24], AgNPs have a larger surface area to volume ratio in comparison to other silver forms such as AgNO 3 , which may make them more effective, while they also have lower toxicity effects. In addition, the ions (Ag + ) of AgNPs possess the property of inhibiting the formation of 1-aminocyclopropane-1-carboxylic acid and, consequently, the action of ethylene [25].…”

Section: Effect Of Pac and Agnps On Physiological And Biochemical Par...mentioning

confidence: 99%

“…Furthermore, this increase in total chlorophyll content is probably due to the relative increase in the number of stomata and epidermal cells in compacted leaves. On the other hand, variation in chlorophyll content using AgNPs has been reported in different plant species such as vanilla (Vanilla planifolia) [28], strawberry (Fragaria × ananassa) [29], tobacco (Nicotiana tabacum L.) [15] and grape (Vitis vinifera L.) [24]. Spinoso-Castillo et al [28] found that V. planifolia seedlings at doses of 25 to 200 mg L −1 of AgNPs showed the highest in vitro chlorophyll values.…”

Section: Effect Of Pac and Agnps On Physiological And Biochemical Par...mentioning

confidence: 99%

In Vitro Conservation and Regeneration of Potato (Solanum tuberosum L.): Role of Paclobutrazol and Silver Nanoparticles

Bernal¹,

Spinoso-Castillo²,

Mancilla-Álvarez³

et al. 2023

Horticulturae

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In vitro conservation and regeneration of potato germplasm is important in breeding programs. The objective of this study was to assess the combined effect of paclobutrazol (PAC) and silver nanoparticles (AgNPs) during reduced-growth conservation and their in vitro ability to regenerate S. tuberosum after conservation treatments. For the conservation system, apices were used as explants in Murashige and Skoog culture media with different combinations of PAC (0, 0.5, 1 and 2 mg L−1) and AgNPs (0, 50, 100 and 200 mg L−1). At six months of culture, plant length, number of lateral branches, number of leaves and roots, root length, stomatal density and total chlorophyll content were assessed. For regeneration, explants were internodes cultured in medium with only 2 mg L−1 benzyladenine (BA). At 60 d of culture, the response percentage, number of shoots per explant and shoot length were assessed. For in vitro conservation, the combination of 2 mg L−1 PAC and 50 mg L−1 AgNPs was the best treatment, whereas for in vitro regeneration, the highest number of shoots was in explants that were treated with 1 or 2 mg L−1 PAC with 50 mg L−1 AgNPs. In conclusion, PAC and AgNPs are alternatives for in vitro S. tuberosum conservation, and their evaluation in other species recalcitrant to the effect of ethylene is recommended.

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Effect of Silver Nitrate (AgNO3) and Nano-Silver (Ag-NPs) on Physiological Characteristics of Grapes and Quality during Storage Period

Cited by 14 publications

References 46 publications

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

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

Review of recent advances in post-harvest techniques for tropical cut flowers and future prospects: Heliconia as a case-study

In Vitro Conservation and Regeneration of Potato (Solanum tuberosum L.): Role of Paclobutrazol and Silver Nanoparticles

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