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Duan F, Sun T, Zhang J, Wang K, Wen Y, Lu L. Recent innovations in immobilization of β-galactosidases for industrial and therapeutic applications. Biotechnol Adv 2022; 61:108053. [DOI: 10.1016/j.biotechadv.2022.108053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 10/18/2022] [Accepted: 10/20/2022] [Indexed: 11/17/2022]
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Swolana D, Wojtyczka RD. Activity of Silver Nanoparticles against Staphylococcus spp. Int J Mol Sci 2022; 23:ijms23084298. [PMID: 35457115 PMCID: PMC9028791 DOI: 10.3390/ijms23084298] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/11/2022] [Accepted: 04/12/2022] [Indexed: 12/20/2022] Open
Abstract
Staphylococcus epidermidis is a bacterium that is part of the human microbiota. It is most abundant on the skin, in the respiratory system and in the human digestive tract. Also, Staphylococcus aureus contributes to human infections and has a high mortality rate. Both of these bacterial species produce biofilm, a pathogenic factor increasing their resistance to antibiotics. For this reason, we are looking for new substances that can neutralize bacterial cells. One of the best-known substances with such effects are silver nanoparticles. They exhibited antibacterial and antibiofilm formation activity that depended on their size, shape and the concentration used. In this review, we presented the data related to the use of silver nanoparticles in counteracting bacterial growth and biofilm formation published in scientific papers between 2017 and 2021. Based on the review of experimental results, the properties of nanoparticles prompt the expansion of research on their activity.
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Thangaraj S, Bankole PO, Sadasivam SK, Kumarvel V. Biodegradation of Reactive Red 198 by textile effluent adapted microbial strains. Arch Microbiol 2021; 204:12. [PMID: 34881397 DOI: 10.1007/s00203-021-02608-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/15/2021] [Accepted: 11/24/2021] [Indexed: 11/30/2022]
Abstract
A sustainable technology to eliminate the persistent reactive dyes from the textile effluents discharged indiscriminately in the environment is highly desirous given the explosive growth of textile industries. The present study investigated the potential of two different bacterial strains, Bacillus cereus SKB12 and Enterobacter hormaechei SKB16 isolated from the dye house effluent sludge in the biotransformation of Reactive Red 198 (RR 198). Process variables such as temperature, pH, shaking conditions and contact time were optimized for the successful decolourization of RR 198. Maximum decolourization of 80% and 85% of RR 198 was achieved at pH 6 and 7, and 40 °C in microaerophilic conditions on treatment with B. cereus and E. hormaechei, respectively. High-Performance Liquid Chromatography (HPLC), and Gas Chromatography-Mass Spectrometry (GC-MS) analyses conducted further affirmed that the decolourization of RR 198 was rather due to biodegradation than biosorption through shift in wavenumbers, retention time variations and the appearance of lesser molecular weight peaks. Degradative pathway for RR 198 predicted based on the enzyme assay data and dye degraded metabolite peaks acquired through GC-MS analysis highlighted the significance of azoreductase and laccase in the degradation of RR 198 into smaller non-toxic compounds. In addition, toxicity assessment through zootoxicological and phytotoxicological experiments using brine shrimp and Vigna radiata validated the detoxified status of the metabolites thus proving the promising potentials of the bacterial strains in the remediation of azo dyes.
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Affiliation(s)
- Sheela Thangaraj
- Geobiotechnology Laboratory, National College (Autonomous), Affiliated To Bharathidasan University, Tiruchirapalli, Tamil Nadu, 620001, India
| | - Paul Olusegun Bankole
- Department of Pure and Applied Botany, College of Biosciences, Federal University of Agriculture, Abeokuta, Ogun State, Nigeria.
| | - Senthil Kumar Sadasivam
- Geobiotechnology Laboratory, National College (Autonomous), Affiliated To Bharathidasan University, Tiruchirapalli, Tamil Nadu, 620001, India.,PG and Research Department of Botany, National College (Autonomous), Tiruchirapalli, Tamil Nadu, 620001, India
| | - Varuna Kumarvel
- PG and Research Department of Biotechnology and Microbiology, National College (Autonomous), Tiruchirapalli, Tamil Nadu, 620001, India
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Bacterial extracellular protein interacts with silver ions to produce protein-encapsulated bactericidal AgNPs. Process Biochem 2021. [DOI: 10.1016/j.procbio.2021.04.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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5
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Shafi A, Ahmed F, Husain Q. β-Galactosidase mediated synthesized nanosupport for the immobilization of same enzyme: Its stability and application in the hydrolysis of lactose. Int J Biol Macromol 2021; 184:57-67. [PMID: 34116091 DOI: 10.1016/j.ijbiomac.2021.06.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 05/29/2021] [Accepted: 06/06/2021] [Indexed: 11/17/2022]
Abstract
β-Galactosidase was immobilized on modified nanosilver reduced graphene oxide (Ag@rGO) nanocomposite prepared by in vitro synthesis using same enzyme. The effectiveness factor, η value of the immobilized enzyme was calculated to be 0.968, suggesting enhancement in enzyme activity after immobilization. The morphological structure of the crosslinked biopolymer was analyzed using electron microscopy and other characterization techniques. The kinetics displayed a decrease in Km value from 0.50 to 0.44 mmol L-1 while there was an increase in Vmax values from 0.031 to 0.039 μmol min-1 mL-1. The immobilized enzyme retained 85% activity after its 10th repeated use. Inhibition constant (Ki) value suggests galactose to be a more potent inhibitor of the enzyme. Despite the inhibitory potential of these hydrolysis products, the immobilized enzyme preparation retained 44.2% activity in the presence of both inhibitory sugars. The as-synthesized nanobiocatalyst was found quite effective in hydrolyzing 89% of lactose from whey. Hence, this nanobiocatalyst can be used in removing lactose from dairy waste, whey before releasing it into the water bodies. Also, the cytotoxicity and genotoxicity of Ag@rGO NC was assessed on human blood lymphocytes using flow cytometry and comet assay, respectively.
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Affiliation(s)
- Azra Shafi
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, U. P., India
| | - Faizan Ahmed
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, U. P., India
| | - Qayyum Husain
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, U. P., India.
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Seray M, Hadj-Hamou AS, uzunlu S, Benhacine F. Development of active packaging films based on poly (butylene adipate-co-terephthalate) and silver–montmorillonite for shelf life extension of sea bream. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03671-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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7
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Ahmed F, Faisal SM, Ahmed A, Husain Q. Beta galactosidase mediated bio-enzymatically synthesized nano-gold with aggrandized cytotoxic potential against pathogenic bacteria and cancer cells. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 209:111923. [DOI: 10.1016/j.jphotobiol.2020.111923] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 03/29/2020] [Accepted: 05/30/2020] [Indexed: 02/08/2023]
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Partila AM, El-Hadedy DE. Effect of Green Silver Nanoparticles Embedded in Irradiated Sodium Alginate /Poly Acrylamide on Removal of Dye Wastes. JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 2020. [DOI: 10.1080/16878507.2020.1742442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Abir M Partila
- Lecturer of Microbiology, National Centre for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt
| | - Doaa E El-Hadedy
- Assistant Professor Microbial Biotechnology, National Centre for Radiation Research and Technology NCRRT, Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt
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Ahmed F, Husain Q, Ansari MO, Shadab GGHA. Antidiabetic and oxidative stress assessment of bio-enzymatically synthesized zinc oxide nanoformulation on streptozotocin-induced hyperglycemic mice. APPLIED NANOSCIENCE 2019. [DOI: 10.1007/s13204-019-01169-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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10
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Palomo JM. Nanobiohybrids: a new concept for metal nanoparticles synthesis. Chem Commun (Camb) 2019; 55:9583-9589. [PMID: 31360955 DOI: 10.1039/c9cc04944d] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
In recent years, nanoscience and nanotechnology have brought a great revolution in different areas. In particular, the synthesis of transition metal nanoparticles has been of great relevance for their use in areas such as biomedicine, antimicrobial properties or catalytic applications for chemical synthesis. Recently, an innovative straightforward and very efficient synthesis of these nanoparticles by simply using enzymes as inductors in aqueous media has been described. This represents a very green alternative to the different methodologies described in the literature for metal nanoparticles preparation where harsh conditions are necessary. In this review the most recent advances in the synthesis of metal nanoparticles by this green technology, explaining the synthetic mechanism, the role of the enzyme in the formation of the nanoparticles and the effect on the final properties of these nanoparticles, are summarised. The application of these novel metal nanoparticles-enzyme hybrids in synthetic chemistry as heterogeneous catalysts with metal or dual (enzymatic and metallic) activity and their capacity as environmental and antimicrobial agents have also been discussed.
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Affiliation(s)
- Jose M Palomo
- Department of Biocatalysis, Institute of Catalysis (CSIC), Marie Curie 2, Cantoblanco, UAM Campus, 28049, Madrid, Spain.
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Ahmed F, Husain Q. Suppression in advanced glycation adducts of human serum albumin by bio-enzymatically synthesized gold and silver nanoformulations: A potential tool to counteract hyperglycemic condition. Biochimie 2019; 162:66-76. [DOI: 10.1016/j.biochi.2019.04.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 04/03/2019] [Indexed: 12/18/2022]
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Liu L, Bilal M, Duan X, Iqbal HMN. Mitigation of environmental pollution by genetically engineered bacteria - Current challenges and future perspectives. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 667:444-454. [PMID: 30833243 DOI: 10.1016/j.scitotenv.2019.02.390] [Citation(s) in RCA: 113] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 02/15/2019] [Accepted: 02/15/2019] [Indexed: 02/08/2023]
Abstract
Industries are the paramount driving force for the economic and technological development of society. However, the flourishing industrialization and unimpeded growth of current production unit's result in widespread environmental pollution due to increased discharge of wastes loaded with baleful, hazardous, and carcinogenic contaminants. Physicochemical-based remediation means are costly, create a secondary disposal problem and remain inadequate for pollution mitigating because of the continuous emergence of new recalcitrant pollutants. Due to eco-friendly, social acceptance, and lesser health hazards, microbial bioremediation has received considerable global attention for pollution abatement. Moreover, with the recent advancement in biotechnology and microbiology, genetically engineered bacteria with high ability to remove environmental pollutants are widely used in the fields of environmental restoration, resulting in the bioremediation in a more viable and eco-friendly way. This review summarized the advantages of genetically engineered bacteria and their application in the treatment of a wide variety of environmental contaminants such as synthetic dyestuff, heavy metal, petroleum hydrocarbons, polychlorinated biphenyls, phenazines and agricultural chemicals which will include herbicides, pesticides, and fertilizers. Considering the risk of genetic material exchange by using genetically engineered bacteria, the challenges and limitations associated with the application of recombinant bacteria on contaminated sites are also discussed. An integrated microbiological, biological and ecological acquaintance accompanied by field engineering designs are the desired features for effective in situ bioremediation of hazardous waste polluted sites by recombinant bacteria.
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Affiliation(s)
- Lina Liu
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China.
| | - Xuguo Duan
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, N.L. CP 64849, Mexico.
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Effect of metal ions present in milk on the structure and functional integrity of native and polyaniline chitosan nanocomposites bound β-galactosidase: A multi-spectroscopic approach. Food Chem 2019; 279:312-320. [DOI: 10.1016/j.foodchem.2018.12.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 12/03/2018] [Accepted: 12/04/2018] [Indexed: 11/18/2022]
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Stabilization of polydopamine modified silver nanoparticles bound trypsin: Insights on protein hydrolysis. Colloids Surf B Biointerfaces 2019; 173:733-741. [DOI: 10.1016/j.colsurfb.2018.10.021] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 09/10/2018] [Accepted: 10/09/2018] [Indexed: 01/03/2023]
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