检索结果-南通市图书馆

Efficacy of new generation biosorbents for the sustainable treatment of antibiotic residues and antibiotic resistance genes from polluted waste effluent

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Infectious Medicine

Infectious Medicine 2024年第1期3卷 3-22页

作者： barkha madhogaria Sangeeta Banerjee Atreyee Kundu Prasanta Dhak Department of Microbiology Techno India UniversityWest BengalEM-4 Sector-VSalt Lake CityKolkata 700091West BengalIndia Department of Chemistry Techno India UniversityWest BengalEM-4 Sector-VSalt Lake CityKolkata 700091West BengalIndia

Antimicrobials are frequently used in both humans and animals for the treatment of bacterially-generated *** usage has increased for more than 40%from last 15 years globally per day in both human populations and farm animals leading to the large-scale discharge of antibiotic residues into *** antibiotics end up in sewer systems,either directly from industry or healthcare systems,or indirectly from hu-mans and animals after being partially metabolized or broken down following *** prevent additional antibiotic compound pollution,which eventually impacts on the spread of antibiotic resistance,it is crucial to remove antibiotic residues from *** accumulation and antibiotic resistance genes cannot be effectively and efficiently eliminated by conventional sewage treatment *** of their high energy requirements and operating costs,many of the available technologies are not ***,the biosorp-tion method,which uses low-cost biomass as the biosorbent,is an alternative technique to potentially address these *** extensive literature survey focusing on developments in the field was conducted using En-glish language electronic databases,such as PubMed,Google Scholar,Pubag,Google books,and ResearchGate,to understand the relative value of the available antibiotic removal *** predominant techniques for eliminating antibiotic residues from wastewater were categorized and defined by *** approaches were contrasted,and the benefits and drawbacks were ***,we included a few antibiotics whose removal from aquatic environments has been the subject of extensive ***,a few representative pub-lications were identified that provide specific information on the removal rates attained by each *** review provides evidence that biosorption of antibiotic residues from biological waste using natural biosorbent materials is an affordable and effective techni

关键词： Antibiotic pollutants Remediation Wastewater Biosorption Antibiotic resistance

On the Inclusion Ideal Graph of Semigroups

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Algebra Colloquium 2023年第3期30卷 411-428页

作者： barkha Baloda Jitender Kumar Department of Mathematics Birla Institute of Technology and Science PilaniPilaniIndia

The inclusion ideal graph In(S)of a semigroup S is an undirected simple graph whose vertices are all the nontrivial left ideals of S and two distinct left ideals I,J are adjacent if and only if either I⊂J or J⊂*** purpose of this paper is to study algebraic properties of the semigroup S as well as graph theoretic properties of In(S).We investigate the connectedness of In(S)and show that the diameter of In(S)is at most 3 if it is *** also obtain a necessary and sufficient condition of S such that the clique number of In(S)is the number of minimal left ideals of ***,various graph invariants of In(S),***,planarity,girth,etc.,are *** a completely simple semigroup S,we investigate properties of In(S)including its independence number and matching ***,we obtain the automorphism group of In(S).

关键词： semigroup ideal completely simple semigroup graph automorphism

Role of beneficial microbial gene pool in mitigating salt/nutrient stress of plants in saline soils through underground phytostimulating signalling molecules

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pedosphere 2023年第1期33卷 153-171页

作者： Shalini TIWARI barkha SHARMA Neha BISHT Lakshmi TEWARI Department of Microbiology College of Basic Science&HumanitiesG.B.Pant University of Agriculture&TechnologyPantnagarUttarakhand 263145India

Soil salinity diminishes soil health and reduces crop yield,which is becoming a major global *** stress is one of the primary stresses,leading to several other secondary stresses that restrict plant growth and soil *** major secondary stresses induced in plants under saline-alkaline conditions include osmotic stress,nutrient limitation,and ionic stress,all of which negatively impact overall plant *** stressed conditions,certain beneficial soil microflora are known to have evolved phytostimulating mechanisms,such as the synthesis of osmoprotectants,siderophores,1-aminocyclopropane-1-carboxylic acid(ACC)deaminase activity,phosphate solubilization,and hormone production,which enhance plant growth and development while mitigating nutrient *** soil-borne bacterial species such as Bacillus,Pseudomonas,and Klebsiella and fungal strains such as Trichoderma,Aspergillus,Penicillium,Alternaria,and Fusarium also aid in reducing salinity ***-solubilizing microorganisms also assist in nutrient acquisition via both enzymatic and non-enzymatic *** the case of enzymatic processes,they produce different enzymes such as alkaline phosphatases and phytases,whereas non-enzymatic processes produce organic acids such as gluconic,citric,malic,and oxalic *** native halotolerant/halophilic soil microbial gene pool with multifunctional traits and stress-induced gene expression can be developed as suitable bio-inoculants to enhance stress tolerance and optimize plant growth in saline soils.

关键词： abiotic stress crop improvement gene expression halotolerant microbial diversity phosphate solubilization plant growth promoting traits soil health

Immunochemical characterization of antigens of Brucella canis and their use in seroprevalence study of canine brucellosis

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2011年第11期4卷 857-861页

作者： Sharma barkha Sinha Dharmendra Kumar Singh Dhirendra Kumar Department of Epidemiology and Preventive Medicine College of Veterinary SciencePandit Deen Dayal Upadhaya Veterinary UniversityMathuraUttar PradeshPin-281001India Division of Epidemiology Indian Veterinary Research InstituteIzatnagarBareillyUttar Pradesh243122India Division of Veterinary Public Health Indian Veterinary Research InstituteIzatnagarBareillyUttar Pradesh243122 India

Objective:To explore immunochemical characterization of antigens of Brucella canis(B. canis),and the use in seroprevalence study of canine ***:External hot phosphate buffer saline extract(HPBSE) and internal sonicated(SA) antigens were prepared from *** strain MEX 51 and imniunochemically *** antigens were used to test 527 serum samples of dogs by 2-mercaptoethanol-tubc agglutination test(2 ME-TAT), agar gel immunodiffusion test(AGID).dot-ELISA and indirect enzyme-linked immunosorbent assay(I-ELISA) to assess the seroprevalence of canine ***:The protein content of HPBSE and SA antigens was 0.387 mg/*** 0.195 mg/mL,respectively,whereas carbohydrate content was 0.174 mg/mL and 0.150 mg/mL,*** sodium dodecyl sulfate-polyacrylamide gel electrophoresis(12.5%) of HPBSE and SA,revealed 6 and 8 visible peptide bands ranging from 18-80 kDa and 12-45 kDa,*** blot analysis showed immunodominant bands of MW 12.28.39 and 45 kl)a for HPBSE and 20-24 kl)a for SA. The AGII) revealed HPBSE as more specific antigen than SA but both I-ELISA and dot-ELISA indicated SA antigen to be more specific and reliable than *** seroprevalence of canine brucellosis was 2.27%by 2ME-TAT.1.5%by AGID.3.03%by dot-ELISA and 16.12%by I-ELISA. Conclusions:On the basis of the results of present study,we concluded that HPBSE is suitable antigen for AGID,which is more specific:whereas SA antigen is suitable for I-ELISA,which is highly ***,initial screening of serum samples should be carried out by I-ELISA followed by confirmation with AGID.

关键词： Brucella canis SDS-PAGE Western blotting Agar gel immunodiffusion test Dot-ELISA I-ELISA

Development of a sandwich ELISA for the detection of bovine herpesvirus type 1

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2011年第5期4卷 363-366页

作者： Shanaz Bashir Rashmi Singh barkha Sharma Sharad K Yadav Department of Epidemiology and Vety.Preventive medicine College of Veterinary SciencesVeterinary UniversityMathura(U.P.)India

Objective:To develop a standard enzyme-linked immunosorbent assay（ELJSA） for the detection of bovine herpesvirus type 1（BHV-1）.Methods:The assay was based on hyperimmune rabbit and guinea pig antisera raised against purified *** glycol precipitation and sucrose density gradient methods were adopted for viral concentration and *** were raised using Freund’s adjuvant followed by extraction of IgG of high ***: Optimum antisera dilutions as determined by titrations were chosen as 14 000,whereas the conjugate was used at 1:2 000 *** 95 clinical specimens,the ELISA test showed a sensitivity and specificity of 91.90%and 93.10%,respectively when compared to *** cutoff value was fixed at 0.15490) and a P/N ratio of>1.30 indicated a significant positive reaction. Conclusions:The results have demonstrated that this ELISA could efficiently detect BHV-1 and can be used as an important diagnostic tool.

关键词： Bovine herpesvirus type 1 Antisera Enzyme-linked immunosorbent assay (ELISA)

Silicon and plant nutrition—dynamics,mechanisms of transport and role of silicon solubilizer microbiomes in sustainable agriculture:A review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pedosphere 2023年第4期33卷 534-555页

作者： barkha SHARMA Kailash Chand KUMAWAT Shalini TIWARI Ajay KUMAR Rouf Ahmad DAR Ummed SINGH Massimiliano CARDINALE Department of Microbiology G.B.Pant University of Agriculture&TechnologyPantnagarUttarakhand 263145(India) Department of Industrial Microbiology Jacob Institute of Biotechnology and BioengineeringSam Higginbottom University of AgricultureTechnology and Sciences(SHUATS)PrayagrajUttar Pradesh 211007(India) College of Agriculture Agriculture UniversityJodhpurBaytuBarmerRajasthan 344034(India) Department of Biological and Environmental Sciences and Technologies-DiSTeBA University of SalentoSP6 Lecce-MonteroniLecce I-73100(Italy)

Silicon(Si)is the second most abundant element in the Earth’s crust and has numerous roles in both soils and plants,although it is inaccessible to plants in its native state(insoluble silicate minerals).This inaccessibility can lead to insufficiency,which induces anomalies in plant growth and ***,Si alleviates various biotic and abiotic stresses in plants by enhancing tolerance mechanisms at different stages of uptake/deposition as a monosilicic *** utilization of conventional Si fertilizers to boost agricultural productivity in an attempt to meet the world’s ever-increasing food demand may result in surface and groundwater pollution,waterway eutrophication,soil fertility depletion,and accumulation of hazardous elements such as arsenic in *** addressing the drawbacks of chemical fertilizers,this review emphasizes an environmentally friendly alternative,namely,Si-solubilizing microorganisms(SSMs),as bioinoculants to liberate soluble Si and thus making it available to plants.A deep understanding of recent advances in the functional diversity,colonization patterns,modes of action,role in biogeochemical cycling,and plant stress tolerance of SSMs and their implementation in Si-based agrowaste management through the fabrication of nanoparticles,could help to establish a reliable tool for economically and environmentally sustainable *** this perspective,in this review,we comprehensively summarize the latest methodologies for the isolation,screening,and characterization of SSMs and Si solubilization mechanisms,including ligands(divalent cations),acids(inorganic and organic),alkali(nucleophilic attack),extracellular polysaccharides,and factors affecting them,as well as Si-mediated regulation of gene expression involved in Si uptake,transportation,and *** have critically revised the role of SSMs according to the current *** contributions of SSMs to biofertilization are still being explored;hence,we also

关键词： agrowaste management biofertilizer bioinoculant monosilicic acid plant stress silicon-solubilizing microorganism

Protective effect of capsaicin against methyl methanesulphonate induced toxicity in the third instar larvae of transgenic Drosophila melanogaster(hsp70-lacZ)Bg9

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Natural Medicines 2017年第4期15卷 271-280页

作者： Saba Khanam Ambreen Fatima Rahul Smita Jyoti Fahad Ali Falaq Naz barkha Shakya Yasir Hasan Siddique Drosophila Transgenic Laboratory Section of GeneticsDepartment of ZoologyFaculty of Life SciencesAligarh Muslim UniversityAligarhUttar Pradesh 202002India

Capsaicin(trans-8-methyl-N-vanillyl-6-nonenamide) is the main component in hot peppers, including red chili peppers, alapenos, and habanero, belonging to the genus Capsicum. Capsaicin is a potent antioxidant that interferes with free radical activities. In the present study, the possible protective effect of capsaicin was studied against methyl methanesulphonate(MMS) induced toxicity in third instar larvae of transgenic Drosophila melanogaster(hsp70-lacZ)Bg^9. The third instar was allowed to feed on the diet having different doses of capsaicin and MMS separately and in combination. The results suggested that the exposure of third instar larvae to the diet having MMS alone showed significant hsp70 expression as well as tissue DNA and oxidative damage, whereas the larvae feed on the diet having MMS and capsaicin showed a decrease in the toxic effects for 48-h of exposure. In conclusion, capsaicin showed a dose-dependent decrease in the toxic effects induced by MMS in the third instar larvae of transgenic Drosophila melanogaster.

关键词： Capsaicin Methyl methanesulphonate Drosophila melanogaster Toxicity

Metabiotics: The Functional Metabolic Signatures of Probiotics: Current State-of-Art and Future Research Priorities—Metabiotics: Probiotics Effector Molecules

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Advances in Bioscience and Biotechnology 2018年第4期9卷 147-189页

作者： Aarti Singh Vishakha Vishwakarma barkha Singhal School of Biotechnology Near Kasna Road Gautam Buddha University Greater Noida (U.P.) India

The intricate “orchestered molecular conversation” between the host and gut microbiome is one of the most dynamic research areas in recent years. The rhythmic chemical cross talk in the form of bioactive metabolites and signalling molecules synthesized by gut microbiome plays a significant role for the modulation of human health in diversified ways. They are recognized as low molecular weight (LMW) molecules having versatile chemical attributes. They possess magnificent capability of interacting with surrounding environment and controlling the genes for various genetic, biochemical and physiological functions for maintaining the homeostasis that is now-a-days termed as “small molecules microbes originated (SMOM) homeostasis” in the host. These metabolic signatures have close structural and functional resemblance with small molecules synthesized by host eukaryotic cells and dietary components. Therefore, they may be considered as universalized metabolites contributing to the remarkable phenomenon of epigenetic regulation, cell to cell communication and stability of genome manifesting the overall growth and development of the host and known as “metabiotics”. The wide panorama of utilization of probiotics is continuously expanding and conferring the major health benefits through metabiotic components are gaining tremendous momentum therefore recognized as “hidden soldiers” of the body. Therefore firstly, we outline the need and types of metabiotic molecules and depicting their role in human health. Then, we summarize their preventive and therapeutic avenues in various diseases and finally, we propose the current technological interventions, bottlenecks and future perspectives in this field that are implied for accelerating their comprehensive understanding and utilization at industrial scale.

关键词： Metabiotics Probiotics Metabolic Signatures Gut Microbiome Homeostasis

Bacterial Surface Layer Proteins: A Promising Nano-Technological Tool for Bio-Sensing Applications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Bioscience and Biotechnology 2019年第3期10卷 42-58页

作者： Anjali Sharma barkha Singhal School of Biotechnology Gautam Buddha University Greater Noida (U.P.) India

The phenomenal rise in the demand of biosensors accelerated their rapid development and immersive applications in the myriads of fields. The essential requirement of developing efficient bio-sensing platform is to find stable well organized interfacial architecture that can serve as an excellent matrix for binding and recognizing biomolecules. In this context, the enormous potential has been envisaged in surface layer proteins that represented themselves as most primitive and simplest self-assembled system with repetitive physicochemical properties for the molecular functionalization of surfaces and various interfaces. The prominence of S-layer proteins has been broadened by integrating genetic engineering approaches for the fine tuning of functional groups and protein domains in geometrically well-defined manner. The efficient and stable binding of various nanomaterials with S-layers in regular arrays has led to paradigmatic shift in their nano-biotechnological sensing applications. More recently, functional S-layer supported lipid membranes have been generated through covalent binding of lipid molecules either with native or recombinant S-layer proteins at nano-scale dimensions serving as “proof of concept” for the development of bio-sensing platform. Thus, in the light of benefits conferred by surface layer proteins for the development of highly efficient biosensors, an exciting path has been opened for broadening their translational applications in drug delivery, disease diagnosis, vaccines development, lab-on-chip devices etc. Therefore, this review intends to describe about the importance of surface layer proteins in the development of biosensors.

关键词： Surface Layer Proteins Nano-Patterning Self-Assembly Liposome Biosensors