Browsing by Author "Pallavi Singh"

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An effective approach to study the biocompatibility of Fe3O4 nanoparticles, graphene and their nanohybrid composite
(Springer Nature, 2018) Ashwani Kumar Singh; Pallavi Singh; Rajiv Kumar Verma; Suresh Yadav; Kedar Singh; Amit Srivastava
The present manuscript describes a simple, facile and effective solvothermal route to synthesize Fe3O4 nanoparticles (Fe3O4 NPs), reduced graphene oxide nanosheets (rGO NSs) and Fe3O4/reduced graphene oxide nanohybrid composite (Fe3O4/rGO nanohybrid composite) and subsequently examines their comparative biocompatibilities. The as-obtained Fe3O4 NPs, rGO NSs and Fe3O4/rGO nanohybrid composite have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Raman spectroscopy. The XRD studies and scanning electron microscope confirmed the proper phase formation and the surface morphology of the as-synthesized products, respectively. The Raman spectra of Fe3O4 NPs show the strongest peak at 673 cm−1 which can be assigned to A1g peak of bare Fe3O4 NPs and it complements the XRD studies. Furthermore, the increment in the ID/IG ratio in the Fe3O4/rGO nanohybrid composite suggests the creation of defects in graphene sheets due to strain caused by Fe3O4 NPs. The biocompatibility of these samples has been tested using Lung cancer cell line H1299 through MTT assay. The MTT assay reveals that the nanohybrid composite endows more biocompatible and effectiveness than rGO NSs and Fe3O4 NPs individually, as anti-proliferative agent for cancer treatment. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
Arsenotrophy: A pragmatic approach for arsenic bioremediation
(Elsevier Ltd, 2022) Vandana Anand; Jasvinder Kaur; Sonal Srivastava; Vidisha Bist; Pallavi Singh; Suchi Srivastava
Arsenic (As) is one of the most common toxic metalloids as its intake affects various forms of life viz. human, animals and crops. The major discharge of As occurs due to natural and anthropogenic sources that leads to contamination of soil and groundwater. The long-term exposure of contaminated water and food adversely affects the human health. Therefore, it is important to minimize the level of arsenic in environment through different approaches. Several conventional and plant-based remediation methods have been reported but these techniques are not cost effective and has not been longer used due to their generic limitations. However, in present scenario microbe-based bioremediation occurs through different mechanisms such as biotransformation, degradation, detoxification and immobilization. Another microbial strategy involves the utilization of oxy-anion arsenic as an electron acceptor or donor to sustain their growth, known as arsenotrophy. This review discusses about the different aspects of (i) As contamination and its ill-effects on human health, (ii) microbial role in As-geocycling, (iii) modulation of microbial system for As resistance and detoxification and (iv) detailed prospects of arsenotrophy, its mechanisms, and plant-microbe interaction for As bioremediation. © 2022 Elsevier Ltd
Assessment of the differential trade-off between growth, subsistence, and productivity of two popular Indian hybrid mango varieties under elevated ozone exposure
(Elsevier B.V., 2023) Pallavi Singh; Harshita Singh; Shashi Bhushan Agrawal; Madhoolika Agrawal
The multifunctionality of plants is well known to be compromised in the areas experiencing higher concentrations of tropospheric ozone (O3). Mango (Mangifera indica L.) cultivation is essential to the economy of tropical regions, including India. Mango, widely grown in suburban and rural areas, experiences production loss due to air pollutants. Ozone, the most important phytotoxic gas in mango growing areas, warrants an investigation of its effects. Therefore, we assessed the differential sensitivity of mango saplings (two-year-old hybrid and regular-bearing mango varieties, Amrapali and Mallika) at two levels of O3: ambient and elevated (ambient + 20 ppb) using open-top chambers from September 2020 to July 2022. Under elevated O3, both varieties showed similar seasonal responses (winter and summer) for all the growth parameters but differed in their height-diameter allocation pattern. A decrease in stem diameter and an increase in plant height were observed in Amrapali, whereas Mallika showed a reverse response. Early emergence of phenophases was noticed during the reproductive growth of both varieties under elevated O3 exposure. However, these changes were more pronounced in Amrapali. Stomatal conductance was more negatively affected in Amrapali than in Mallika under elevated O3 during both seasons. Furthermore, leaf morpho-physiological traits (leaf nitrogen concentration, leaf area, leaf mass per area, and photosynthetic nitrogen use efficiency) and inflorescence parameters responded variably in both varieties under elevated O3 stress. A decrease in photosynthetic nitrogen use efficiency, further enhanced yield loss which was more pronounced in Mallika than in Amrapali under elevated O3 exposure. The results of this study could be useful in selecting a better-performing variety based on its productivity, which will be economically more beneficial in achieving the goal of sustainable production at the anticipated high O3 levels under a climate change scenario. © 2023 Elsevier B.V.
Assessment of the Reverberations Caused by Predominant Air Pollutants on Urban Vegetation: A Multi-Site Study in Varanasi Located in Indo-Gangetic Plains
(Multidisciplinary Digital Publishing Institute (MDPI), 2023) Harshita Singh; Pallavi Singh; Shashi Bhushan Agrawal; Madhoolika Agrawal
Plant responses to air pollution have been extensively studied in urban environments. Nevertheless, detailed and holistic studies assessing their retaliation to air contaminants are still limited. The present study evaluates the effect of criteria pollutants (SO2, NO2, PM10 and O3) on the overall biochemistry and resource allocation strategy of plants in order to categorize the dominant roadside species (Mangifera indica, Psidium guajava, Ficus religiosa, Azadirachta indica, Dalbergia sissoo, Cascabela thevetia and Bougainvillea spectabilis) of the Indo-Gangetic Plains (IGP), with different morphologies and habits, into species that are tolerant and sensitive to the prevailing air pollutants. This study was performed at three different land-use sites (industrial, commercial and reference) in Varanasi for two seasons (summer and winter). It was inferred that NO2 and PM10 consistently violated the air quality standards at all the sites. The fifteen assessed parameters reflected significant variations depending upon the site, season and plant species whereupon the enzymatic antioxidants (superoxide dismutase and catalase) and resource utilization parameters (leaf area and leaf dry matter content) were remarkably affected. Based on the studied parameters, it was entrenched that deciduous tree species with compound leaves (D. sissoo > A. indica) were identified as the less sensitive, followed by a shrub (C. thevetia > B. spectabilis), while evergreen species with simple leaves were the most sensitive. It was also substantiated that the morphology of the foliage contributed more toward the differential response of the plants to air pollutants than its habit. © 2023 by the authors.
Efficient micropropagation protocols of regeneration of Stevia rebaudiana Bertoni, an anti-diabetic herb
(2013) Pallavi Singh; Padmanabh Dwivedi
Micropropagation protocols of Stevia rebaudiana Bertoni, an important medicinal plant of Asteraceae family have been developed using nodal segments in half strength MS media. Stevia is an anti-diabetic plant used as sweetening agent in industrial sector and is commercially important. Stevioside, the bio-active compound in its leaves, tastes about 300 times sweeter than sucrose. Its other medicinal uses include regulating blood sugar, preventing hypertension and tooth decay as well as treatment of skin disorders. Due to poor seed viability and low germination rate, the common method of propagation is restricted. Keeping in view its utmost medicinal values in account, in vitro culture study was attempted to raise the stevia plants through effective protocol. Shoot multiplication enhanced significantly in half strength MS medium at various hormonal concentrations of Benzyl amino purine (BAP), Kinetin (Kn), Indole acetic acid (IAA), Indole butyric acid (IBA), both alone and in combination. Lower concentrations of growth regulators, in general, are more effective. Single use of Kn (0.5 mg/l) as compared to BAP produced best shooting response, whereas, when various combinations of cytokinins and auxins were considered BAP and IBA (0.2 mg/l each) produced maximum shoots (2.75) with moderate shoot length (1.70 cm) and good number of leaves (28). In vitro rooting of microshoots was effective in 1/4 MS medium supplemented with IBA (1.0 mg/l) and activated charcoal (50 mg/l).The survival of the hardened in vitro raised plants, under controlled condition was 90%. The field transplantation of these plants showed 70% survival after 2 months.
Efficient synthesis of naphthodiazacrown ethers
(2011) Pallavi Singh; Rajiv K. Verma; Maya Shankar Singh
A benign and efficient synthesis of naphthodiazacrown ethers has been described. Reaction of simple dialdehyde precursor with α,ω-diamines followed by sodium borohydride reduction leads to 16-27 membered naphthodiazacrown ethers in 80-90% yields. © 2011 Elsevier Ltd. All rights reserved.
Encapsulation in chitosan-based nanomatrix as an efficient green technology to boost the antimicrobial, antioxidant and in situ efficacy of Coriandrum sativum essential oil
(Elsevier B.V., 2019) Somenath Das; Vipin Kumar Singh; Abhishek Kumar Dwivedy; Anand Kumar Chaudhari; Neha Upadhyay; Pallavi Singh; Sarika Sharma; Nawal Kishore Dubey
The present investigation deals with first time report on encapsulation of Coriandrum sativum essential oil (CSEO) in chitosan nanomatrix as a green nanotechnology for enhancing its antimicrobial, aflatoxin inhibitory and antioxidant efficacy. Chitosan nano biopolymer entrapped CSEO as prepared through ionic gelation process showed broad spectrum fungitoxicity against molds infesting stored rice and also exhibited enhanced bioefficacy than unencapsulated CSEO. The CSEO entrapped in chitosan nanomatrix lead to decrement in important fungal membrane biomolecule i.e. ergosterol and leakage of UV-absorbing substances along with vital cellular ions. The CSEO encapsulation in selected biopolymer nanomatrix effectively checked methylglyoxal (the aflatoxin inducer) biosynthesis, confirming antiaflatoxigenic mode of action. The physico-chemical properties, considerable decrease in lipid peroxidation and improved in situ AFB1 suppressive as well as antifungal potential of CSEO nanocapsules suggested the deployment of chitosan based nano biopolymer for encapsulation of essential oils as an ecofriendly technology for application in food industries in order to enhance the shelf life and control the fungal and aflatoxin contamination of stored rice. © 2019 Elsevier B.V.
Evaluation of sodium nitroprusside and putrescine on polyethylene glycol induced drought stress in Stevia rebaudiana Bertoni under in vitro condition
(Elsevier B.V., 2020) Navin Pradhan; Pallavi Singh; Padmanabh Dwivedi; Devendra Kumar Pandey
The present work aimed to regenerate Stevia rebaudiana Bertoni under in vitro drought condition induced by different concentrations (0%, 5%, 10 % and 15 %) of polyethylene glycol (PEG) 6000, and to investigate the mitigating effect of sodium nitroprusside (SNP; nitric oxide donor) and putrescine in relation to efficient multiplication. Varying concentrations of SNP (50, 100, 250 and 500 μM) and putrescine (0.05, 0.1, 0.3 and 0.5 mM), used singly or in combination in the MS medium, along with best selected concentration of plant growth regulator (kinetin 0.2 mg l−1) under in vitro drought imposed by 10 % PEG were taken for studies at 20, 40 and 60 days after inoculation (DAI). The best response with maximum values on the basis of morphological parameters was recorded; number of shoot and number of leaves were observed in half strength MS media supplemented with combination of both SNP and putrescine treatment i.e. SNP 100 μM + putrescine 0.05 mM followed by other treatments as compared to remaining treatments as well as control (10 % PEG only). On the basis of present investigation, it is concluded that in vitro drought stress significantly reduced the number of shoot, length of shoot (cm), number of leaves, number of roots, length of root (cm) and survival percentage. However, treatment with SNP and putrescine, alone or in combination, alleviated the negative impacts of drought stress up to a great extent. The production of more number of stevia leaves even under drought condition as a result of ameliorative treatment with SNP and putrescine has implication in R&D industries to target for production of maximum content of stevioside and rebaudioside, key principles in treating diabetes, if there is an increase in their content. © 2020 Elsevier B.V.
Facile one pot synthesis of dioxazadibenzocyclodecene-6-one, 6-thione and other homologues
(Arkat, 2009) M.S. Singh; Pratibha Singh; Pallavi Singh; Ashutosh Gupta
Previously unknown dioxazadibenzocyclodecene-6-one, -6-thione and other homologues were prepared via the intermediacy of a 1,9-dianion generated and used in situ from N-(2-hydroxymethylphenyl)salicylideneimine followed by treatment with a variety of dielectrophiles in a simple one-pot procedure. The products were characterized by satisfactory elemental analyses and spectral (IR,1H,13C NMR and Mass) studies.
Impacts of Air Pollutants on the Ecophysiology of Tropical Plants
(CRC Press, 2023) Pallavi Singh; Jigyasa Prakash; Harshita Singh; Shashi Bhushan Agrawal; Madhoolika Agrawal
Urban air pollution in the tropics is rapidly increasing and will lead to thousands of preventable deaths in the absence of stringent regulations and remedial measures. The vast majority of the air pollutants appeared to come from industrial and residential sources instead of conventional biomass burning which has historically driven air pollution in tropical regions. In addition, enhanced transportation further contributes significantly to the degradation of air quality. Major pollutants of concern include sulfur dioxide (SO2), nitrogen dioxide (NO2), ozone (O3) and particulate matter (PM10 and PM2.5)-all of which consistently violate the air quality standards except SO2, which reduced drastically after the use of unleaded gasoline and promotion of efficient engine designs. These pollutants when emitted in the atmosphere follow similar modes of deposition (wet, dry and occult). After deposition, these impose a severe threat to plants exposed, from visible injuries to altering their physiology and biochemistry and ultimately impacting the biomass and yield of both crops and trees. One of the crucial concerns of air pollution is the decline in food security as it negatively affects crop yields, especially in the tropics, which includes the highest food-producing countries. The impacts of common air pollutants on the ecophysiology of the dominant trees and major crops of the tropics are discussed in detail in this chapter. Trees were found to be comparatively less affected than crops in terms of biomass and yield, while visible injury was found similar and equivalent for a particular pollutant. Vigna radiata was found to be more susceptible among the studied crops, while Psidium cattelianum was most affected among the assessed trees under air pollutant stress. © 2024 selection and editorial matter, Sachchidanand Tripathi, Rahul Bhadouria, Pratap Srivastava, Rishikesh Singh, Rajkumari Sanayaima Devi; individual chapters, the contributors.
Implications of Foliar Particulate Matter Deposition on the Physiology and Nutrient Allocation of Dominant Perennial Species of the Indo-Gangetic Plains
(Frontiers Media S.A., 2022) Harshita Singh; Pallavi Singh; Shashi Bhushan Agrawal; Madhoolika Agrawal
The ramifications of different concentrations of foliar particulate matter on the physiology, nutrient stoichiometry, allocation pattern, and their corresponding re-translocation rates were investigated for evergreen (Mangifera indica and Psidium guajava), semi-evergreen (Ficus religiosa and Azadirachta indica), and deciduous (Dalbergia sissoo) tree species in a simulation experiment over an exposure period of 2 years. Physiological parameters (Pn, gs, Ci, E, and WUE), nutrient stoichiometry (C: N) in different plant parts, and their allocation pattern for five macro- (C, N, K, Mg, Ca) and five (Zn, Ni, Mn, Cu, Fe) micro-elements at two different concentrations of particulate matter (ambient and elevated) with respect to control (no particulate load) were assessed. Significant differences in nutrient concentrations and their re-translocation rates were observed between the treatments in evergreen species compared to deciduous species. The photosynthetic rate significantly declined with an increase in foliar deposition of particulate matter. Higher variations in C, N, K, Mg, and Zn levels were found compared to other elements under particulate matter stress and the ratio of C/N showed a slight decline in mature leaves except in deciduous tree species. The nutrient stoichiometry revealed that the deciduous species were more tolerant whereas the re-translocation efficiency was maximum for the semi-evergreen tree species. The nutrient allocation was found greater in foliage compared to branch in evergreen and was opposite in semi-evergreen and deciduous tree species. The element re-translocation rate indicated an inconsistent behavior in nutrient recycling under the particulate matter load depending upon the tree species. The study entrenched a critical change in nutrient re-translocation and allocation pattern under the particulate stress in different parts of the tree, suggesting a novel approach for screening the tree species for sustainable plantation and planning of urban areas. Copyright © 2022 Singh, Singh, Agrawal and Agrawal.
In Vitro Shoot Multiplication of Stevia and Assessment of Stevioside Content and Genetic Fidelity of the Regenerants
(Springer, 2014) Pallavi Singh; Padmanabh Dwivedi; Neelam Atri
A reliable protocol for micropropagation was developed for an anti-diabetic medicinal plant species, Stevia rebaudiana. In the present investigation the highest percentage of response was shown by nodal segment (98.00 ± 1.22) and both MS full and half strength performed well and were almost equally effective. Callus along with multiple shoots was obtained from nodal segments of S. rebaudiana on half strength Murashige and Skoog (MS) media supplemented with various concentrations of benzyl amino purine (BAP) and indole-3-butyric acid (IBA) (0.2, 0.5, 1.0, 1.5 mg l−1 each). The in vitro shoots produced along with callus were re-cultured on one-fourth strength MS media supplemented with kinetin (Kn) (0.5 mg l−1), IBA (1.0 mg l−1), activated charcoal (50 mg l−1), polyvinylpolypyrrolidone (100 mg l−1) and gibberellic acid (1 mg l−1) to obtain optimum shoot regeneration. Shoot multiplication and simultaneous rooting of S. rebaudiana was observed. The results obtained showed multiple shooting (18–20) with shoot length (6.5–7.2 cm), number of leaves (42–50), number of roots (12–14) and root length (5.8–6.2 cm), after 4 weeks of re-culturing of callus. Among different auxins and cytokinins used for secondary callus formation in half strength MS media. 2, 4-D (0.5 mg l−1) showed maximum growth index (266.384), after 8 weeks of callus culture. In vitro raised plantlets were transferred for hardening in plastic pots containing garden soil and perlite (1:1). A total of 80 % survival rate was observed. Quantitative analysis of stevioside content of in vitro and field grown plants was carried out by HPLC which showed increase of about 2 % stevioside content in the regenerants as compared to field grown plants. The genetic fidelity of micropropagated plantlets was confirmed by ISSR analysis confirming that in vitro plants obtained from callus showed genetic variation during the period of culturing, whereas those from nodal segments did not. Overall, this system results in mass multiplication of S. rebaudiana with simultaneous production of callus within short period. The high stevioside content in micropropagated plants may be of immense use to the pharmaceutical industry. © 2013, Society for Sugar Research & Promotion.
l-Proline: an efficient catalyst for the one-pot synthesis of 2,4,5-trisubstituted and 1,2,4,5-tetrasubstituted imidazoles
(2009) Subhasis Samai; Ganesh Chandra Nandi; Pallavi Singh; M.S. Singh
A simple highly versatile and efficient synthesis of 2,4,5-trisubstituted imidazoles is achieved by three-component cyclocondensation of 1,2-dicarbonyl compound, aldehyde and ammonium acetate using l-proline as a catalyst in methanol at moderate temperature. To explore the utility of this method 1,2,4,5-tetrasubstituted imidazoles were also synthesized. The key advantages of this process are high yields, cost effectiveness of catalyst, easy work-up and purification of products by non-chromatographic methods. © 2009 Elsevier Ltd. All rights reserved.
Microbial biofilm in remediation of environmental contaminants from wastewater: Mechanisms, opportunities, challenges, and future perspectives
(CRC Press, 2022) Pallavi Singh; Akshita Maheshwari; Varsha Dharmesh; Vandana Anand; Jasvinder Kaur; Sonal Srivastava; Satish Kumar Verma; Suchi Srivastava
[No abstract available]
Micronutrients zinc and boron enhance stevioside content in Stevia rebaudiana plants while maintaining genetic fidelity
(Elsevier B.V., 2019) Pallavi Singh; Padmanabh Dwivedi
Micronutrients such as zinc (Zn) and boron (B) greatly affect plant growth and development. A pot experiment was conducted in garden soil in the poly house of the Horticulture garden, Banaras Hindu University, Varanasi, India to study the effect of zinc and boron application on stevioside content of Stevia plant. The data from two years (same season) showed that the foliar spraying of zinc sulphate (0.25, 0.50 and 0.75% w/v) and boric acid (0.25, 0.50 and 0.75% w/v) alone at all rates significantly increased stevioside content as compared to the control treatment. The most promising results were obtained from plants treated with 0.75% ZnSO4, as there was 30 times increase in the peak area noted in HPLC chromatogram. The in vitro raised plants were genetically stable as demonstrated using ISSR markers. © 2019 Elsevier B.V.
Microwave assisted synthesis, chemiluminescent and theoretical studies of bromoalkyl esters of acridine-9-carboxylic acid
(2011) Subhasis Samai; Ganesh C. Nandi; Pallavi Singh; A. Gupta; M.S. Singh
Previously unknown esters of acridine-9-carboxylic acid have been synthesized in moderate to good yields under microwave irradiation using phase transfer catalyst aliquat. Chemiluminescent properties of the synthesized compounds have been studied using luminometer and the experimental findings are justified by theoretical studies.
Mitigation of arsenic toxicity in wheat by the inoculation of methyltransferase containing Pseudomonas oleovorans NBRI-B4.10
(Elsevier Ltd, 2024) Pallavi Singh; Vandana Anand; Jasvinder Kaur; Sonal Srivastava; Satish K. Verma; Abhishek Niranjan; Pankaj Kumar Srivastava; Suchi Srivastava
Arsenic (As) pollution in croplands is a significant global environmental issue. Being the dominant irrigated crop, rice is the main focus for research related to arsenic toxicity, however, wheat being the basic staple food has not been studied well. Therefore, the present study sought to investigate the potential of arsenic-tolerant rhizobacteria for its mitigation in wheat. Ten As tolerant bacterial strains were characterized for abiotic stress tolerance, antibiotic resistance, and plant growth-promoting traits. Methyltransferase containing Pseudomonas oleovorans (NBRI-B4.10) with a better arsenic tolerance index (151.74%) in wheat outperformed the other strains. In vitro study, showed the highest phosphate solubilization ability (40.17 μgmL−1) under As+5 (250 μgmL−1) stressed condition in NBRI-P media, accompanied with more As biosorption (72.9%) in culture pellet, confers the As detoxification ability of B4.10 during arsenic-phosphate (As–P) interaction too. Organic acid production studied during the process of P-solubilization by methyltransferase bacteria, NBRI-B4.10 reveals the production of higher concentrations of gluconic and tartaric acid at As+5 (25 μgmL−1) stress. Furthermore, NBRI-B4.10 inoculation increased the plant growth and nutrient content (Se) while decreasing As content in grain (∼53.3%) leading to arsenic abatement in wheat. © 2024 Elsevier Ltd
New tandem reactions for the construction of heterocycles via dianion strategy
(2008) M.S. Singh; Pratibha Singh; Pallavi Singh
The reaction of chiral and achiral salen ditopic ligands with sodium in dry isopropanol generates remote O,O-dianions. The dianions thus generated in situ are trapped by suitable phosphorus dielectrophiles to yield 2-oxo and 2-thioxo-1,3,7-dioxazaphos-phadecines and 2-oxo and 2-thioxo-1,3,7,10- dioxadiazaphos-phatridecines in moderate to good overall yield. The products are characterized by elemental and spectral (1R, 1H. 13C, 31P NMR and Mass) studies. A plausible mechanistic logic and concept utilized in the synthesis have been discussed.
Particulate Matter Deposition on the Foliage Aided in Low Temperature Acclimatization of Psidium guajava L. in Winter
(Springer, 2023) Harshita Singh; Pallavi Singh; Shashi Bhushan Agrawal; Madhoolika Agrawal
The combined effect of chilling stress during winter season and particulate matter (PM) was studied on two-year-old saplings of Psidium guajava L, a common fruit tree of Indo-Gangetic plains. The experimental set-up consisted of two different loads of PM namely ambient and elevated particulate matter along with a control without PM. The study found an affirmative effect of PM in tolerating chilling stress through an increase in leaf temperature of treated plants. Anatomical observations showed extensive epidermal localization of anthocyanins with decreasing particulate load. The growth analysis established an increase in the height, diameter of shoot and number of leaves in PM stressed plants whereas the defoliation decreased drastically. Biochemical analysis established an increasing trend of photosynthetic pigments and membrane stability index with increasing particulate matter load whereas total antioxidant capacity decreased with increasing load. Physiological analysis revealed an increasing trend of leaf temperature, relative water content and chlorophyll fluorescence with increase in particulate load. The photosynthetic traits improved as the PM load increased. A substantial increase in the anthocyanin pigment and decrease in chlorophyll fluorescence was seen in the control plants whereas the plants with particulate load maintained their leaves in optimum conditions depicting the positive aspects of PM which helped the plant to cope up with the chilling stress. Graphical abstract: [Figure not available: see fulltext.]. © 2023, The Author(s), under exclusive licence to The National Academy of Sciences, India.
Prospects and Challenges of Nanofilms-based Edible Food Coatings for Enhancement of Their Shelf Life
(CRC Press, 2024) Richa Prasad Mahato; Pallavi Singh; Suchi Srivastava
Nanotechnology has drawn much attention as a novel and promising technology in the area of food processing, safety and packaging. Food preservation is one of the most challenging tasks to prolong the storage period of harvested horticulture crops and products. Currently, there are numerous food packaging alternatives that are friendly to the environment, including films made up of biopolymers, which have been created to prolong food’s shelf life. However, compared to conventional plastic packaging, these biopolymers, which come from plant, animal and microbial sources, was not found to have some of the essential physicochemical and mechanical qualities. That’s why the development of new packaging materials is a growing area in the food industry. These flaws could be fixed by strengthening biopolymers with nanomaterials, which also give them antioxidant and antibacterial activity. Nanotechnology-related storage period enhancement strategies could help to overcome the drawbacks of conventional coatings due to their special set of features. In this chapter, the basic ideas and contemporary, extremely effective uses of shelf life extension technologies for crops, fruits and vegetables connected to nanotechnology are explained. © 2024 selection and editorial matter, Swarnendu Roy and Akbar Hossain; individual chapters, the contributors.