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Kaur R, Yadu B, Chauhan NS, Parihar AS, Keshavkant S. Nano zinc oxide mediated resuscitation of aged Cajanus cajan via modulating aquaporin, cell cycle regulatory genes and hormonal responses. PLANT CELL REPORTS 2024; 43:110. [PMID: 38564104 DOI: 10.1007/s00299-024-03202-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 03/19/2024] [Indexed: 04/04/2024]
Abstract
KEY MESSAGE Nanoparticle pretreatment improved the health of aged Cajanus cajan seeds viz., regulation of redox status, gene expression, and restoration of hormonal homeostasis. Ageing deteriorates the quality of seeds by lowering their vigor and viability, and terminating with loss of germination. These days, nanotechnology has been seen to revolutionize the agricultural sectors, and particularly nano zinc oxide (nZnO) has gained considerable interests due to its distinctive properties. The aim of the present work was to decipher the possibilities of using nZnO to rejuvenate accelerated aged (AA) seeds of Cajanus cajan. Both chemically (CnZnO) and green (GnZnO; synthesized using Moringa oleifera) fabricated nZnOs were characterized via standard techniques to interpret their purity, size, and shape. Experimental results revealed erratic germination with a decline in viability and membrane stability as outcomes of reactive oxygen intermediate (ROI) buildup in AA seeds. Application of nZnO substantially rebated the accrual of ROI, along with enhanced production of antioxidants, α-amylase activity, total sugar, protein and DNA content. Higher level of zinc was assessed qualitatively/ histologically and quantitatively in nZnO pulsed AA seeds, supporting germination without inducing toxicity. Meantime, augmentation in the gibberellic acid with a simultaneous reduction in the abscisic acid level were noted in nZnO invigorated seeds than that determined in the AA seeds, suggesting possible involvement of ROI in hormonal signalling. Furthermore, nZnO-subjected AA seeds unveiled differential expression of aquaporins and cell cycle regulatory genes. Summarizing, among CnZnO and GnZnO, later one holds better potential for a revival of AA seeds of Cajanus cajan by providing considerable tolerance against ageing-associated deterioration via recouping the cellular redox homeostasis, hormonal signaling, and alteration in expression patterns of aquaporin and cell cycle regulatory genes.
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Affiliation(s)
- Rasleen Kaur
- School of Studies in Biotechnology, Pt. Ravishankar Shukla University, Raipur, 492 010, India
| | - Bhumika Yadu
- School of Life and Allied Science, ITM University, Raipur, 492 002, India
| | | | | | - S Keshavkant
- School of Studies in Biotechnology, Pt. Ravishankar Shukla University, Raipur, 492 010, India.
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2
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Gao J, Liu Y, Zhao D, Ding Y, Gao L, Su X, Song K, He X. CeO 2NP priming enhances the seed vigor of alfalfa ( Medicago sativa) under salt stress. FRONTIERS IN PLANT SCIENCE 2024; 14:1264698. [PMID: 38264026 PMCID: PMC10803516 DOI: 10.3389/fpls.2023.1264698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 12/12/2023] [Indexed: 01/25/2024]
Abstract
Soil salinization is a common environmental problem that seriously threatens crop yield and food security, especially through its impact on seed germination. Nanoparticle priming, an emerging seed treatment method, is receiving increasing attention in improving crop yield and stress resistance. This study used alfalfa seeds as materials to explore the potential benefits of cerium oxide nanoparticle (CeO2NP) priming to promote seed germination and improve salt tolerance. CeO2NPs at concentrations up to 500 mg/L were able to significantly alleviate salt stress in alfalfa seeds (200 mM), with 50 mg/L of CeO2NP having the best effect, significantly (P< 0.05) increasing germination potential (from 4.0% to 51.3%), germination rate (from 10.0% to 62.7%), root length (from 8.3 cm to 23.1 cm), and seedling length (from 9.8 cm to 13.7 cm). Priming treatment significantly (P< 0.05) increased seed water absorption by removing seed hardness and also reducing abscisic acid and jasmonic acid contents to relieve seed dormancy. CeO2NP priming increased α-amylase activity and osmoregulatory substance level, decreased reactive oxygen species and malonaldehyde contents and relative conductivity, and increased catalase enzyme activity. Seed priming regulated carotenoid, zeatin, and plant hormone signal transduction pathways, among other metabolic pathways, while CeO2NP priming additionally promoted the enrichment of α-linolenic acid and diterpenoid hormone metabolic pathways under salt stress. In addition, CeO2NPs enhanced α-amylase activity (by 6.55%) in vitro. The optimal tested concentration (50 mg/L) of CeO2NPs was able to improve the seed vigor, enhance the activity of α-amylase, regulate the osmotic level and endogenous hormone levels, and improve the salt tolerance of alfalfa seeds. This study demonstrates the efficacy of a simple seed treatment strategy that can improve crop stress resistance, which is of great importance for reducing agricultural costs and promoting sustainable agricultural development.
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Affiliation(s)
| | | | | | | | | | | | | | - Xueqing He
- College of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi, China
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3
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Naik B, Kumar V, Goyal SK, Tripati AD, Khan JM, Irfan M, Bhatt SC, Gupta AK, Rustagi S. Production, characterization, and application of novel fungal pullulanase for fruit juice processing. Int J Biol Macromol 2023; 248:125936. [PMID: 37482156 DOI: 10.1016/j.ijbiomac.2023.125936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/13/2023] [Accepted: 07/20/2023] [Indexed: 07/25/2023]
Abstract
The present study aimed to produce, characterize, and apply pullulanase from Aspergillus flavus (BHU-46) for fruit juice processing, assessing its enzymatic properties and impact on juice quality. Pullulanase was produced via solid-state fermentation using wheat bran as the substrate. Purification and characterization included specific activity, molecular weight, pH and temperature optima, and substrate specificity. The enzyme was immobilized in sodium alginate beads and used for clarifying mosambi, apple, and mango juices. Parameters such as yield, clarity, reducing sugar, total soluble solids (TSS), total phenol, and enzymatic browning were evaluated pre-and post-treatment. The purified pullulanase had a specific activity of 652.2 U/mg and a molecular weight of 135 kDa. Optimal pH values were 6.5 and 10, with maximum activity at 50 °C. Pullulanase showed a high affinity for pullulan and starch, indicating Pullulanase type II classification. Immobilized pullulanase improved yield, clarity, reducing sugar, TSS, and total phenol in fruit juices. The highest yield and clarity were observed in mosambi juice. Additionally, the enzyme reduced enzymatic browning, increasing the lightness of the juice. This study provides a significant contribution to the juice processing industry and represents the first report on the application of pullulanase for fruit juice processing.
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Affiliation(s)
- Bindu Naik
- Department of Food Science and Technology, Graphic Era (Deemed to be University), Bell Road, Clement Town, Dehradun 248002, Uttarakhand, India
| | - Vijay Kumar
- Himalayan School of Biosciences, Swami Rama Himalayan University, Jolly Grant, Dehradun, Uttarakhand 248016, India.
| | - S K Goyal
- Department of Agricultural Engineering, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221005, UP, India
| | - Abhisek Dutt Tripati
- Department of Dairy Science and Food Technology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221005, UP, India
| | - Javed Masood Khan
- Department of Food Science and Nutrition, Faculty of Food and Agricultural Sciences, King Saud University, 2460, Riyadh 11451, Saudi Arabia
| | - Mohammad Irfan
- Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY, USA
| | - Saurav Chandra Bhatt
- Department of Food Science and Technology, Graphic Era (Deemed to be University), Bell Road, Clement Town, Dehradun 248002, Uttarakhand, India
| | - Arun Kumar Gupta
- Department of Food Science and Technology, Graphic Era (Deemed to be University), Bell Road, Clement Town, Dehradun 248002, Uttarakhand, India
| | - Sarvesh Rustagi
- Department of Food Technology, UCALS, Uttaranchal University, Dehradun, Uttarakhand, India
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4
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Liu X, Sun B, Xu C, Zhang T, Zhang Y, Zhu L. Intrinsic mechanisms for the inhibition effect of graphene oxide on the catalysis activity of alpha amylase. JOURNAL OF HAZARDOUS MATERIALS 2023; 453:131389. [PMID: 37043854 DOI: 10.1016/j.jhazmat.2023.131389] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 03/25/2023] [Accepted: 04/07/2023] [Indexed: 05/03/2023]
Abstract
Comprehending the interactions between graphene oxide (GO) and enzymes is critical for understanding the toxicities of GO. In this study, the inherent interactions of GO with α-amylase as a typical enzyme, and the impacts of GO on the conformation and biological activities of α-amylase were systematically investigated. The results reveal that GO formed ground-state complex with α-amylase primarily via hydrogen bonding and van der Waals interactions, thus quenching the intrinsic fluorescence of the protein statically. Particularly, the strong interactions altered the microenvironment of tyrosine and tryptophan residues, caused rearrangement of polypeptide structure, and reduced the contents of α-helices and β-sheets, thus changing the conformational structure of α-amylase. According to molecular docking results, GO binds with the amino acid residues (i.e., His299, Asp300, and His305) of α-amylase mainly through hydrogen bonding, which is in accordance with in vitro incubation experiments. As a consequence, the ability of α-amylase to catalyze starch hydrolysis into glucose was depressed by GO, suggesting that GO might cause dysfunction of α-amylase. This study discloses the intrinsic binding mechanisms of GO with α-amylase and provides novel insights into the adverse effects of GO as it enters organisms.
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Affiliation(s)
- Xinwei Liu
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Binbin Sun
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Chunyi Xu
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Tianxu Zhang
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Yinqing Zhang
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Lingyan Zhu
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China.
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5
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Enzyme mimic nanomaterials as nanozymes with catalytic attributes. Colloids Surf B Biointerfaces 2023; 221:112950. [DOI: 10.1016/j.colsurfb.2022.112950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 10/16/2022] [Accepted: 10/17/2022] [Indexed: 11/06/2022]
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6
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Construction of functional soybean peptide–cyclodextrin carboxylate nanoparticles and their interaction with porcine pancreatic α-amylase. Food Res Int 2022; 162:112054. [DOI: 10.1016/j.foodres.2022.112054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 10/11/2022] [Accepted: 10/12/2022] [Indexed: 11/24/2022]
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7
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Altuner EE, Ozalp VC, Yilmaz MD, Bekmezci M, Sen F. High-efficiency application of CTS-Co NPs mimicking peroxidase enzyme on TMB(ox). CHEMOSPHERE 2022; 292:133429. [PMID: 34973252 DOI: 10.1016/j.chemosphere.2021.133429] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/16/2021] [Accepted: 12/22/2021] [Indexed: 06/14/2023]
Abstract
In this study, analytical studies of Chitosan-Cobalt(II) (CTS-Co(II)) nanoparticles (CTS - Co NPs) by mimicking horseradish peroxidase (HRP) were evaluated. In the applications, it was observed that CTS-Co NPs 3,3' 5,5' tetramethylbenzidine (TMB) oxidized in the presence of hydrogen peroxide (H2O2). The required CTS-Co NPs were synthesized at 50 °C in 30 min and characterized using Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), inductively coupled plasma-optical emission spectroscopy (ICP-OES), and X-ray photon spectroscopy (XPS) was done. CTS-Co NPs were studied to develop a selective TMB biosensor on TMB(ox) substrate. The synthesized CTS-Co NPs formed a catalytic reaction with 30% 0.2 mM H2O2 on 0.2 M TMB substrate. After the catalytic reaction, sensitive signals were obtained from the desired biosensor. Electrochemical measurements were taken as low limit of 10 mg and a high limit of 20 mg for the determination of CTS-Co NPs to TMB(ox). In the microplate study; The sensors were applied on 1.5 μg and 3 μg CTS-Co NPs TMB(ox) substrate, respectively. CTS- Co NPs; for TMB(ox) determination, optical density (OD) measurement was taken as a low limit of 1.5 μg and a high limit of 3 μg. Electrochemical applications of particles and microplate reader results were compared with horseradish peroxidase (HRP) enzyme for sensor properties. According to the data obtained, it was observed that it behaved similarly to the CTS-Co NPs peroxidase enzyme. This work presents innovations for nanoparticle extraction and sensor study from chitosan and other naturally sourced polymers.
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Affiliation(s)
- Elif Esra Altuner
- Sen Research Group, Department of Biochemistry, Dumlupinar University, 43000, Kutahya, Turkey.
| | - Veli Cengiz Ozalp
- Medical School, Department of Medical Biology, Atilim University, 06830, Ankara, Turkey.
| | - M Deniz Yilmaz
- Department of Bioengineering, Faculty of Engineering and Architecture, Konya Food and Agriculture University, 42080, Konya, Turkey
| | - Muhammed Bekmezci
- Sen Research Group, Department of Biochemistry, Dumlupinar University, 43000, Kutahya, Turkey; Department of Materials Science and Engineering, Faculty of Engineering, Dumlupinar University, Kutahya, Turkey
| | - Fatih Sen
- Sen Research Group, Department of Biochemistry, Dumlupinar University, 43000, Kutahya, Turkey.
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8
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Shelar A, Singh AV, Maharjan RS, Laux P, Luch A, Gemmati D, Tisato V, Singh SP, Santilli MF, Shelar A, Chaskar M, Patil R. Sustainable Agriculture through Multidisciplinary Seed Nanopriming: Prospects of Opportunities and Challenges. Cells 2021; 10:2428. [PMID: 34572078 PMCID: PMC8472472 DOI: 10.3390/cells10092428] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 09/09/2021] [Accepted: 09/12/2021] [Indexed: 11/18/2022] Open
Abstract
The global community decided in 2015 to improve people's lives by 2030 by setting 17 global goals for sustainable development. The second goal of this community was to end hunger. Plant seeds are an essential input in agriculture; however, during their developmental stages, seeds can be negatively affected by environmental stresses, which can adversely affect seed vigor, seedling establishment, and crop production. Seeds resistant to high salinity, droughts and climate change can result in higher crop yield. The major findings suggested in this review refer nanopriming as an emerging seed technology towards sustainable food amid growing demand with the increasing world population. This novel growing technology could influence the crop yield and ensure the quality and safety of seeds, in a sustainable way. When nanoprimed seeds are germinated, they undergo a series of synergistic events as a result of enhanced metabolism: modulating biochemical signaling pathways, trigger hormone secretion, reduce reactive oxygen species leading to improved disease resistance. In addition to providing an overview of the challenges and limitations of seed nanopriming technology, this review also describes some of the emerging nano-seed priming methods for sustainable agriculture, and other technological developments using cold plasma technology and machine learning.
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Affiliation(s)
- Amruta Shelar
- Department of Technology, Savitribai Phule Pune University, Pune 411007, India;
| | - Ajay Vikram Singh
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany; (R.S.M.); (P.L.); (A.L.)
| | - Romi Singh Maharjan
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany; (R.S.M.); (P.L.); (A.L.)
| | - Peter Laux
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany; (R.S.M.); (P.L.); (A.L.)
| | - Andreas Luch
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany; (R.S.M.); (P.L.); (A.L.)
| | - Donato Gemmati
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (D.G.); (V.T.)
| | - Veronica Tisato
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (D.G.); (V.T.)
| | | | | | - Akanksha Shelar
- Department of Microbiology, Savitribai Phule Pune University, Pune 411007, India;
| | - Manohar Chaskar
- Ramkrishna More Arts, Commerce and Science College, Pune 411044, India;
| | - Rajendra Patil
- Department of Biotechnology, Savitribai Phule Pune University, Pune 411007, India
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9
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Enhanced starch hydrolysis by α-amylase using copper oxide nanowires. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-021-01931-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Nguyen N, Singha P, Zhang J, Phan H, Nguyen N, Ooi CH. Digital Imaging‐based Colourimetry for Enzymatic Processes in Transparent Liquid Marbles. Chemphyschem 2020; 22:99-105. [DOI: 10.1002/cphc.202000760] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 11/04/2020] [Indexed: 12/21/2022]
Affiliation(s)
- Nhat‐Khuong Nguyen
- Queensland Micro- and Nanotechnology Centre Griffith University 170 Kessels Road Nathan 4111 Queensland Australia
| | - Pradip Singha
- Queensland Micro- and Nanotechnology Centre Griffith University 170 Kessels Road Nathan 4111 Queensland Australia
| | - Jun Zhang
- Queensland Micro- and Nanotechnology Centre Griffith University 170 Kessels Road Nathan 4111 Queensland Australia
| | - Hoang‐Phuong Phan
- Queensland Micro- and Nanotechnology Centre Griffith University 170 Kessels Road Nathan 4111 Queensland Australia
| | - Nam‐Trung Nguyen
- Queensland Micro- and Nanotechnology Centre Griffith University 170 Kessels Road Nathan 4111 Queensland Australia
| | - Chin Hong Ooi
- Queensland Micro- and Nanotechnology Centre Griffith University 170 Kessels Road Nathan 4111 Queensland Australia
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11
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Gherardi F, Turyanska L, Ferrari E, Weston N, Fay MW, Colston BJ. Immobilized Enzymes on Gold Nanoparticles: From Enhanced Stability to Cleaning of Heritage Textiles. ACS APPLIED BIO MATERIALS 2019; 2:5136-5143. [PMID: 35021456 DOI: 10.1021/acsabm.9b00802] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Enzyme-based treatments are used in heritage conservation for the effective removal of glues and other damaging organic layers from the surfaces of historic and artistic works. Despite their potential, however, the application of enzymatic treatments is currently limited because of their poor efficiency and low operational and environmental stability. We demonstrate the use of α-amylase immobilized on gold nanoparticles to improve the efficacy of enzymatic treatments enhancing both the reactivity and the stability of the formulations. Gold nanoparticles coated with α-amylase exhibit significant advantages compared to free enzymes. We report up to 5× greater resistance to environmental changes, up to 2× higher efficacy toward removal of starch-based glues from textiles and deeper penetration through the fibers, without causing damage or inducing salt precipitation. These results offer exciting prospects for the development of enzymatic formulations, both for heritage conservation and the wider application of enzymes, such as in medicine, the detergent industry, and green chemistry.
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Affiliation(s)
| | - Lyudmila Turyanska
- School of Chemistry, University of Lincoln, Lincoln LN6 7TS, U.K.,School of Physics and Astronomy, University of Nottingham, Nottingham NG72RD, U.K
| | - Enrico Ferrari
- School of Life Sciences, University of Lincoln, Lincoln LN6 7TS, U.K
| | - Nicola Weston
- Nanoscale and Microscale Research Centre, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Michael W Fay
- Nanoscale and Microscale Research Centre, University of Nottingham, Nottingham NG7 2RD, U.K
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12
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Humeres E, de Souza EP, Debacher NA, Lopes CN, Moreira RDF, Santaballa JA, Canle L. M. Effect of mass of pristine carbon nanotubes on the photolysis of phenylalanine. J PHYS ORG CHEM 2019. [DOI: 10.1002/poc.3849] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Eduardo Humeres
- Departamento de Química; Universidade Federal de Santa Catarina; Florianópolis SC Brazil
| | | | - Nito Angelo Debacher
- Departamento de Química; Universidade Federal de Santa Catarina; Florianópolis SC Brazil
| | - Cristiane Nunes Lopes
- Departamento de Química; Universidade Federal de Santa Catarina; Florianópolis SC Brazil
| | - Regina de F.P.M. Moreira
- Departamento de Engenharia Química e Engenharia de Alimentos; Universidade Federal de Santa Catarina; Florianópolis SC Brazil
| | - J. Arturo Santaballa
- Facultade de Ciencias and CICA, Grupo Reactividad Química e Fotorreactividade; Universidade da Coruña; A Coruña Spain
| | - Moisés Canle L.
- Facultade de Ciencias and CICA, Grupo Reactividad Química e Fotorreactividade; Universidade da Coruña; A Coruña Spain
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13
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Acet Ö, Aksoy NH, Erdönmez D, Odabaşı M. Determination of some adsorption and kinetic parameters of α-amylase onto Cu+2-PHEMA beads embedded column. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2018; 46:S538-S545. [DOI: 10.1080/21691401.2018.1501378] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Ömür Acet
- Faculty of Arts and Science, Chemistry Department, Aksaray University, Aksaray, Turkey
| | - Neşe Hayat Aksoy
- Faculty of Veterinary Medicine, Aksaray University, Aksaray, Turkey
| | - Demet Erdönmez
- Faculty of Arts and Science, Biology Department, Aksaray University, Aksaray, Turkey
| | - Mehmet Odabaşı
- Faculty of Arts and Science, Chemistry Department, Aksaray University, Aksaray, Turkey
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14
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Chemical induced fabrication of silver nanoparticles (Ag-NPs) as nanocatalyst with alpha amylase enzyme for enhanced breakdown of starch. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2018. [DOI: 10.1016/j.bcab.2018.06.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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15
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Baudrimont M, Andrei J, Mornet S, Gonzalez P, Mesmer-Dudons N, Gourves PY, Jaffal A, Dedourge-Geffard O, Geffard A, Geffard O, Garric J, Feurtet-Mazel A. Trophic transfer and effects of gold nanoparticles (AuNPs) in Gammarus fossarum from contaminated periphytic biofilm. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:11181-11191. [PMID: 28091991 DOI: 10.1007/s11356-017-8400-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 01/04/2017] [Indexed: 06/06/2023]
Abstract
This work addressed the trophic transfer and effects of functionalized gold nanoparticles (AuNPs) from periphytic biofilms to the crustacean Gammarus fossarum. Biofilms were exposed for 48 h to 10 nm positively charged functionalized AuNPs at two concentrations, 4.6 and 46 mg/L, and crustaceans G. fossarum grazed on these for 7 days, with daily biofilm renewal. Gold bioaccumulation in biofilm and crustacean were measured to estimate the trophic transfer ratio of these AuNP, and, for the first time, a transcriptomic approach and transmission electron microscopy observations in the crustacean were made. These two approaches showed cellular damage caused by oxidative stress and, in particular, an impact of these AuNPs on mitochondrial respiration. Modulation of digestive enzyme activity was also observed, suggesting modifications of digestive functions. The damage due to these nanoparticles could then have vital consequences for the organisms during chronic exposure.
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Affiliation(s)
- Magalie Baudrimont
- University of Bordeaux, CNRS, UMR EPOC 5805, Aquatic Ecotoxicology, Place du Dr Peyneau, 33120, Arcachon, France.
| | - Jennifer Andrei
- University of Bordeaux, CNRS, UMR EPOC 5805, Aquatic Ecotoxicology, Place du Dr Peyneau, 33120, Arcachon, France
| | - Stéphane Mornet
- ICMCB, 87 Avenue du Dr Albert Schweitzer, 33600, Pessac, France
| | - Patrice Gonzalez
- University of Bordeaux, CNRS, UMR EPOC 5805, Aquatic Ecotoxicology, Place du Dr Peyneau, 33120, Arcachon, France
| | - Nathalie Mesmer-Dudons
- University of Bordeaux, CNRS, UMR EPOC 5805, Aquatic Ecotoxicology, Place du Dr Peyneau, 33120, Arcachon, France
| | - Pierre-Yves Gourves
- University of Bordeaux, CNRS, UMR EPOC 5805, Aquatic Ecotoxicology, Place du Dr Peyneau, 33120, Arcachon, France
| | - Ali Jaffal
- Université de Reims Champagne Ardenne, UMR-I 02 SEBIO, Campus du Moulin de la Housse, BP 1039, 51687, Reims cedex 2, France
| | - Odile Dedourge-Geffard
- Université de Reims Champagne Ardenne, UMR-I 02 SEBIO, Campus du Moulin de la Housse, BP 1039, 51687, Reims cedex 2, France
| | - Alain Geffard
- Université de Reims Champagne Ardenne, UMR-I 02 SEBIO, Campus du Moulin de la Housse, BP 1039, 51687, Reims cedex 2, France
| | - Olivier Geffard
- IRSTEA, 5 rue de la Doua, CS70077, 69626, Villeurbanne Cedex, France
| | - Jeanne Garric
- IRSTEA, 5 rue de la Doua, CS70077, 69626, Villeurbanne Cedex, France
| | - Agnès Feurtet-Mazel
- University of Bordeaux, CNRS, UMR EPOC 5805, Aquatic Ecotoxicology, Place du Dr Peyneau, 33120, Arcachon, France
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16
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Ji N, Liu C, Li M, Sun Q, Xiong L. Interaction of cellulose nanocrystals and amylase: Its influence on enzyme activity and resistant starch content. Food Chem 2018; 245:481-487. [DOI: 10.1016/j.foodchem.2017.10.130] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 10/16/2017] [Accepted: 10/25/2017] [Indexed: 11/30/2022]
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17
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Mahakham W, Sarmah AK, Maensiri S, Theerakulpisut P. Nanopriming technology for enhancing germination and starch metabolism of aged rice seeds using phytosynthesized silver nanoparticles. Sci Rep 2017; 7:8263. [PMID: 28811584 DOI: 10.1038/541598-017-08669-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 07/12/2017] [Indexed: 05/19/2023] Open
Abstract
Application of nanomaterials for agriculture is relatively new as compared to their use in biomedical and industrial sectors. In order to promote sustainable nanoagriculture, biocompatible silver nanoparticles (AgNPs) have been synthesized through green route using kaffir lime leaf extract for use as nanopriming agent for enhancing seed germination of rice aged seeds. Results of various characterization techniques showed the successful formation of AgNPs which were capped with phytochemicals present in the plant extract. Rice aged seeds primed with phytosynthesized AgNPs at 5 and 10 ppm significantly improved germination performance and seedling vigor compared to unprimed control, AgNO3 priming, and conventional hydropriming. Nanopriming could enhance α-amylase activity, resulting in higher soluble sugar content for supporting seedlings growth. Furthermore, nanopriming stimulated the up-regulation of aquaporin genes in germinating seeds. Meanwhile, more ROS production was observed in germinating seeds of nanopriming treatment compared to unprimed control and other priming treatments, suggesting that both ROS and aquaporins play important roles in enhancing seed germination. Different mechanisms underlying nanopriming-induced seed germination were proposed, including creation of nanopores for enhanced water uptake, rebooting ROS/antioxidant systems in seeds, generation of hydroxyl radicals for cell wall loosening, and nanocatalyst for fastening starch hydrolysis.
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Affiliation(s)
- Wuttipong Mahakham
- Department of Civil and Environmental Engineering, Faculty of Engineering, The University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Ajit K Sarmah
- Department of Civil and Environmental Engineering, Faculty of Engineering, The University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand.
| | - Santi Maensiri
- School of Physics, Institute of Science, Suranaree University of Technology, Nakhon, Ratchasima, 30000, Thailand
| | - Piyada Theerakulpisut
- Salt-tolerant Rice Research Group, Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand.
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18
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Mahakham W, Sarmah AK, Maensiri S, Theerakulpisut P. Nanopriming technology for enhancing germination and starch metabolism of aged rice seeds using phytosynthesized silver nanoparticles. Sci Rep 2017; 7:8263. [PMID: 28811584 PMCID: PMC5557806 DOI: 10.1038/s41598-017-08669-5] [Citation(s) in RCA: 201] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 07/12/2017] [Indexed: 12/22/2022] Open
Abstract
Application of nanomaterials for agriculture is relatively new as compared to their use in biomedical and industrial sectors. In order to promote sustainable nanoagriculture, biocompatible silver nanoparticles (AgNPs) have been synthesized through green route using kaffir lime leaf extract for use as nanopriming agent for enhancing seed germination of rice aged seeds. Results of various characterization techniques showed the successful formation of AgNPs which were capped with phytochemicals present in the plant extract. Rice aged seeds primed with phytosynthesized AgNPs at 5 and 10 ppm significantly improved germination performance and seedling vigor compared to unprimed control, AgNO3 priming, and conventional hydropriming. Nanopriming could enhance α-amylase activity, resulting in higher soluble sugar content for supporting seedlings growth. Furthermore, nanopriming stimulated the up-regulation of aquaporin genes in germinating seeds. Meanwhile, more ROS production was observed in germinating seeds of nanopriming treatment compared to unprimed control and other priming treatments, suggesting that both ROS and aquaporins play important roles in enhancing seed germination. Different mechanisms underlying nanopriming-induced seed germination were proposed, including creation of nanopores for enhanced water uptake, rebooting ROS/antioxidant systems in seeds, generation of hydroxyl radicals for cell wall loosening, and nanocatalyst for fastening starch hydrolysis.
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Affiliation(s)
- Wuttipong Mahakham
- Department of Civil and Environmental Engineering, Faculty of Engineering, The University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Ajit K Sarmah
- Department of Civil and Environmental Engineering, Faculty of Engineering, The University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand.
| | - Santi Maensiri
- School of Physics, Institute of Science, Suranaree University of Technology, Nakhon, Ratchasima, 30000, Thailand
| | - Piyada Theerakulpisut
- Salt-tolerant Rice Research Group, Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand.
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19
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Tamaddon F, KazemiVarnamkhasti M. Scalable preparation, characterization, and application of alkali-treated starch as a new organic base catalyst. Carbohydr Res 2017; 437:9-15. [PMID: 27883908 DOI: 10.1016/j.carres.2016.10.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Revised: 10/27/2016] [Accepted: 10/28/2016] [Indexed: 11/27/2022]
Abstract
Preparation, characterization, and application of alkali starch (AS) given by dry co-grinding of starch and alkali is described in this work. Grinding using a mortar (agate) and pestle or, more conveniently, a ball mill has been found to be satisfactory for the preparation of the AS. The AS products were characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) and x-ray fluorescence (XRF) analyses. The base capacities of ASs were 4.25-4.45 mmol/g, respectively. AS is a low cost and easy to handle base catalyst that showed promising catalytic performance in the synthesis of a dihydroquinazoline-based antibacterial drug that involves tandem hydration or decarboxylative amidation, imination, and Aza-Michael reactions.
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Affiliation(s)
- Fatemeh Tamaddon
- Department of Chemistry, Faculty of Science, Yazd University, Yazd 89195-741, Iran.
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20
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WITHDRAWN: Scalable preparation, characterization, and application of alkali-treated starch as a new organic base catalyst. Carbohydr Res 2016. [DOI: 10.1016/j.carres.2016.11.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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21
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Konovalova V, Guzikevich K, Burban A, Kujawski W, Jarzynka K, Kujawa J. Enhanced starch hydrolysis using α-amylase immobilized on cellulose ultrafiltration affinity membrane. Carbohydr Polym 2016; 152:710-717. [PMID: 27516322 DOI: 10.1016/j.carbpol.2016.07.065] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 07/10/2016] [Accepted: 07/17/2016] [Indexed: 01/10/2023]
Abstract
In order to prepare ultrafiltration membranes possessing biocatalytic properties, α-amylase has been immobilized on cellulose membranes. Enzyme immobilization was based on a covalent bonding between chitosan and a surface of cellulose membrane, followed by an attachment of Cibacron Blue F3G-A dye as affinity ligand. Various factors affecting the immobilization process, such as enzyme concentration, pH of modifying solution, zeta-potential of membrane surface, and stability of immobilized enzyme were studied. The applicability of immobilized α-amylase has been investigated in ultrafiltration processes. The immobilization of α-amylase on membrane surface allows to increase the value of mass transfer coefficient and to decrease the concentration polarization effect during ultrafiltration of starch solutions. The enzyme layer on the membrane surface prevents a rapid increase of starch concentration due to the amylase hydrolysis of starch in the boundary layer. The presented affinity immobilization technique allows also for the regeneration of membranes from inactivated enzyme.
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Affiliation(s)
- Viktoriia Konovalova
- Department of Chemistry, National University of Kyiv-Mohyla Academy, 2 Skovoroda Street, 04070 Kiev, Ukraine
| | - Kateryna Guzikevich
- Department of Chemistry, National University of Kyiv-Mohyla Academy, 2 Skovoroda Street, 04070 Kiev, Ukraine
| | - Anatoliy Burban
- Department of Chemistry, National University of Kyiv-Mohyla Academy, 2 Skovoroda Street, 04070 Kiev, Ukraine
| | - Wojciech Kujawski
- Nicolaus Copernicus University in Toruń, Faculty of Chemistry, 7 Gagarina Street, 87-100 Toruń, Poland.
| | - Karolina Jarzynka
- Nicolaus Copernicus University in Toruń, 11 Gagarina Street, 87-100 Toruń, Poland
| | - Joanna Kujawa
- Nicolaus Copernicus University in Toruń, Faculty of Chemistry, 7 Gagarina Street, 87-100 Toruń, Poland
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Existence of hydroxylated MWCNTs demotes the catalysis effect of amylases against starch degradation. Int J Biol Macromol 2016; 86:250-61. [PMID: 26812109 DOI: 10.1016/j.ijbiomac.2016.01.071] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 01/20/2016] [Accepted: 01/21/2016] [Indexed: 11/22/2022]
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23
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Abdullah NISB, Ahmad MB, Shameli K. Biosynthesis of silver nanoparticles using Artocarpus elasticus stem bark extract. Chem Cent J 2015; 9:61. [PMID: 26528373 PMCID: PMC4629401 DOI: 10.1186/s13065-015-0133-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 09/22/2015] [Indexed: 11/10/2022] Open
Abstract
Background Green approach in synthesizing metal nanoparticles has gain new interest from the researchers as metal nanoparticles were widely applied in medical equipment and household products. The use of plants in the synthesis of nanoparticles emerges as a cost effective and eco-friendly approach. A green synthetic route for the production of stable silver nanoparticles (Ag-NPs) by using aqueous silver nitrate as metal precursor and Artocarpus elasticus stem bark extract act both as reductant and stabilizer is being reported for the first time. Results The resultant Ag-NPs were characterized by UV–vis spectroscopy, powder X-Ray diffraction, transmission electron microscopy (TEM), scanning electron microscopy (SEM), and Fourier-transform infra-red (FT-IR). The morphological study by TEM and SEM shows resultant Ag-NPs in spherical form with an average size of 5.81 ± 3.80, 6.95 ± 5.50, 12.39 ± 9.51, and 19.74 ± 9.70 nm at 3, 6, 24, and 48 h. Powder X-ray diffraction showed that the particles are crystalline in nature, with a face-centered cubic structure. The FT-IR spectrum shows prominent peaks appeared corresponds to different functional groups involved in synthesizing Ag-NPs. Conclusions Ag-NPs were synthesized using a simple and biosynthetic method by using methanolic extract of A. elasticus under room temperature, at different reaction time. The diameters of the biosynthesis Ag-NPs depended on the time of reaction. Thus, with the increase of reaction time in the room temperature the size of Ag-NPs increases. From the results obtained in this effort, one can affirm that A. elasticus can play an important role in the bioreduction and stabilization of silver ions to Ag-NPs.Figure illustrates stabilization of silver nanoparticles after formation by A. elasticus stem bark extract. ![]()
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Affiliation(s)
| | - Mansor B Ahmad
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, UPM, 43400 Serdang, Selangor Malaysia
| | - Kamyar Shameli
- Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra (Jalan Semarak), 54100 Kuala Lumpur, Malaysia
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24
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Amir M, Kurtan U, Baykal A. Rapid color degradation of organic dyes by Fe3O4@His@Ag recyclable magnetic nanocatalyst. J IND ENG CHEM 2015. [DOI: 10.1016/j.jiec.2015.01.013] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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25
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Modulatory Effect of Citrate Reduced Gold and Biosynthesized Silver Nanoparticles on α-Amylase Activity. ACTA ACUST UNITED AC 2015. [DOI: 10.1155/2015/829718] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Amylase is one of the important digestive enzymes involved in hydrolysis of starch. In this paper, we describe a novel approach to study the interaction of amylase enzyme with gold nanoparticles (AuNPs) and silver nanoparticles (AgNPs) and checked its catalytic function. AuNPs are synthesized using citrate reduction method and AgNPs were synthesized using biological route employing Ficus benghalensis and Ficus religiosa leaf extract as a reducing and stabilizing agent to reduce silver nitrate to silver atoms. A modulatory effect of nanoparticles on amylase activity was observed. Gold nanoparticles are excellent biocompatible surfaces for the immobilization of enzymes. Immobilized amylase showed 1- to 2-fold increase of activity compared to free enzyme. The biocatalytic activity of amylase in the bioconjugate was marginally enhanced relative to the free enzyme in solution. The bioconjugate material also showed significantly enhanced pH and temperature stability. The results indicate that the present study paves way for the modulator degradation of starch by the enzyme with AuNPs and biogenic AgNPs, which is a promising application in the medical and food industry.
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26
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Kurtan U, Amir M, Baykal A. A Fe3O4@Nico@Ag nanocatalyst for the hydrogenation of nitroaromatics. CHINESE JOURNAL OF CATALYSIS 2015. [DOI: 10.1016/s1872-2067(14)60316-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Misson M, Zhang H, Jin B. Nanobiocatalyst advancements and bioprocessing applications. J R Soc Interface 2015; 12:20140891. [PMID: 25392397 PMCID: PMC4277080 DOI: 10.1098/rsif.2014.0891] [Citation(s) in RCA: 168] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 10/20/2014] [Indexed: 11/12/2022] Open
Abstract
The nanobiocatalyst (NBC) is an emerging innovation that synergistically integrates advanced nanotechnology with biotechnology and promises exciting advantages for improving enzyme activity, stability, capability and engineering performances in bioprocessing applications. NBCs are fabricated by immobilizing enzymes with functional nanomaterials as enzyme carriers or containers. In this paper, we review the recent developments of novel nanocarriers/nanocontainers with advanced hierarchical porous structures for retaining enzymes, such as nanofibres (NFs), mesoporous nanocarriers and nanocages. Strategies for immobilizing enzymes onto nanocarriers made from polymers, silicas, carbons and metals by physical adsorption, covalent binding, cross-linking or specific ligand spacers are discussed. The resulting NBCs are critically evaluated in terms of their bioprocessing performances. Excellent performances are demonstrated through enhanced NBC catalytic activity and stability due to conformational changes upon immobilization and localized nanoenvironments, and NBC reutilization by assembling magnetic nanoparticles into NBCs to defray the high operational costs associated with enzyme production and nanocarrier synthesis. We also highlight several challenges associated with the NBC-driven bioprocess applications, including the maturation of large-scale nanocarrier synthesis, design and development of bioreactors to accommodate NBCs, and long-term operations of NBCs. We suggest these challenges are to be addressed through joint collaboration of chemists, engineers and material scientists. Finally, we have demonstrated the great potential of NBCs in manufacturing bioprocesses in the near future through successful laboratory trials of NBCs in carbohydrate hydrolysis, biofuel production and biotransformation.
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Affiliation(s)
- Mailin Misson
- School of Chemical Engineering, The University of Adelaide, Adelaide, South A, ustralia 5000, Australia Biotechnology Research Institute, Universiti Malaysia Sabah, Jalan UMS, 88400 Kota Kinabalu, Sabah, Malaysia
| | - Hu Zhang
- School of Chemical Engineering, The University of Adelaide, Adelaide, South A, ustralia 5000, Australia
| | - Bo Jin
- School of Chemical Engineering, The University of Adelaide, Adelaide, South A, ustralia 5000, Australia
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28
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Jiang C, Jia J, Zhai S. Mechanistic understanding of toxicity from nanocatalysts. Int J Mol Sci 2014; 15:13967-92. [PMID: 25119861 PMCID: PMC4159834 DOI: 10.3390/ijms150813967] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 07/04/2014] [Accepted: 07/11/2014] [Indexed: 01/30/2023] Open
Abstract
Nanoparticle-based catalysts, or nanocatalysts, have been applied in various industrial sectors, including refineries, petrochemical plants, the pharmaceutical industry, the chemical industry, food processing, and environmental remediation. As a result, there is an increasing risk of human exposure to nanocatalysts. This review evaluates the toxicity of popular nanocatalysts applied in industrial processes in cell and animal models. The molecular mechanisms associated with such nanotoxicity are emphasized to reveal common toxicity-inducing pathways from various nanocatalysts and the uniqueness of each specific nanocatalyst.
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Affiliation(s)
- Cuijuan Jiang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.
| | - Jianbo Jia
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.
| | - Shumei Zhai
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.
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29
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Wei X, Luo M, Liu H. Preparation of the antithrombotic and antimicrobial coating through layer-by-layer self-assembly of nattokinase-nanosilver complex and polyethylenimine. Colloids Surf B Biointerfaces 2014; 116:418-23. [DOI: 10.1016/j.colsurfb.2014.01.034] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 12/28/2013] [Accepted: 01/22/2014] [Indexed: 11/29/2022]
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30
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Ernest V, Sekar G, Mukherjee A, Chandrasekaran N. Studies on the effect of AgNP binding on α-amylase structure of porcine pancreas and Bacillus subtilis by multi-spectroscopic methods. JOURNAL OF LUMINESCENCE 2014; 146:263-268. [DOI: 10.1016/j.jlumin.2013.09.065] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
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31
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Ernest V, Gajalakshmi S, Mukherjee A, Chandrasekaran N. Enhanced activity of lysozyme-AgNP conjugate with synergic antibacterial effect without damaging the catalytic site of lysozyme. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2013; 42:336-43. [PMID: 23863117 DOI: 10.3109/21691401.2013.818010] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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32
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Xia B, He F, Li L. Preparation of bimetallic nanoparticles using a facile green synthesis method and their application. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:4901-4907. [PMID: 23517530 DOI: 10.1021/la400355u] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A straightforward, economically viable, and green approach for the synthesis of well-stabilized Au/Ag bimetallic nanoparticles is described; this method uses nontoxic and renewable degraded pueraria starch (DPS) as a matrix and mild reaction conditions. The DPS acted as both a reducing agent and a capping agent for the bimetallic nanoparticles. Au/Ag bimetallic nanoparticles were successfully grown within the DPS matrixes, and the bimetallic structures were characterized using various methods, including high-resolution transmission electron microscopy, energy-dispersive X-ray, and X-ray diffraction. Moreover, it was shown that these DPS-capped Au/Ag bimetallic nanoparticles could function as catalysts for the reduction of 4-nitrophenol in the presence of NaBH4 and were more effective than Au or Ag monometallic nanoparticles.
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Affiliation(s)
- Bihua Xia
- State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P R China
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33
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Green DC, Lees MR, Hall SR. Designed 3D architectures of high-temperature superconductors. Chem Commun (Camb) 2013; 49:2974-6. [PMID: 23388857 DOI: 10.1039/c3cc38271k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Self-supporting superconducting replicas of pasta shapes are reported, yielding products of differing 3D architectures. Functioning high-temperature superconductor wires are developed and refined from replicas of spaghetti, demonstrating a unique sol-gel processing technique for the design and synthesis of novel macroscopic morphologies of complex functional materials.
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Affiliation(s)
- David C Green
- Complex Functional Materials Group, School of Chemistry, University of Bristol, BS8 1TS, UK
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34
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A novel ‘green’ synthesis of colloidal silver nanoparticles (SNP) using Dillenia indica fruit extract. Colloids Surf B Biointerfaces 2013; 102:83-5. [DOI: 10.1016/j.colsurfb.2012.08.012] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Revised: 08/07/2012] [Accepted: 08/12/2012] [Indexed: 11/23/2022]
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