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1. Nanomaterials based optical and electrochemical sensing of histamine: Progress and perspectives

Author:
Yadav, Sangeeta,   et al.   ; Nair, Sheethal S.; Sai, V.V.R.; Satija, Jitendra;     Show all 4 Authors
Source:
Food research international 2019 v.119 pp. 99-109
ISSN:
0963-9969
Subject:
Food and Drug Administration; Raman spectroscopy; capillary zone electrophoresis; colorimetry; decarboxylation; electrochemistry; enzyme-linked immunosorbent assay; fish; fluorescence; fluorometry; food contamination; foodborne illness; foods; gas chromatography; good manufacturing practices; high performance liquid chromatography; histamine; histidine; histidine decarboxylase; nanomaterials; poisoning; spoilage; surface plasmon resonance; thin layer chromatography
Abstract:
... Histamine is known to be a principal causative agent associated with marine food poisoning outbreaks worldwide, which is typically formed in the contaminated food by decarboxylation of histidine by bacterial histidine decarboxylase. Upon quantification of histamine in different food products, one can comment on the quality of the food and use it as an indicator of the good manufacturing practices ...
DOI:
10.1016/j.foodres.2019.01.045

2. Detection and assessment of the phytotoxicity of residual organic pollutants in sediment contaminated with pulp and paper mill effluent

Author:
Yadav, Sangeeta,   et al.   ; Chandra, Ram;     Show all 2 Author
Source:
Environmental monitoring and assessment 2018 v.190 no.10 pp. 581
ISSN:
0167-6369
Subject:
Allium cepa; Fourier transform infrared spectroscopy; adsorption; cell division; chromosome aberrations; energy-dispersive X-ray analysis; gas chromatography-mass spectrometry; genotoxicity; heavy metals; ions; lignin; moieties; organic halogen compounds; phenolic compounds; phytotoxicity; pulp and paper mill effluents; pulp and paper mills; scanning electron microscopy; sediment contamination; sediments
Abstract:
... The safe disposal of pulp and paper mill effluent is still a threat to the environment due to the presence of several unknown organic pollutants. The comparative physico-chemical analysis of pulp and paper mill effluent-contaminated sediment (PPECS) of site 1 and site 2 showed that the sediment had an alkaline nature and was loaded with several organic pollutants and heavy metals. SEM-EDX examinat ...
DOI:
10.1007/s10661-018-6947-1

3. Torsional Bias as a Strategy To Tune Singlet–Triplet Gaps in Organic Diradicals C

Author:
Yadav, Sangeeta,   et al.   ; DeFrancisco, Justin R.; López-Espejo, Guzmán; Zafra, José Luis; Messersmith, Reid E.; Gómez-García, Carlos J.; Ottosson, Henrik; Casado, Juan; Tovar, John D.;     Show all 9 Authors
Source:
Journal of physical chemistry 2018 v.122 no.23 pp. 12148-12157
ISSN:
1932-7455
Subject:
energy; engineering; magnetism; physical chemistry
Abstract:
... Quinoidal compounds with proaromatic structures possess differing degrees of diradical character, where the open-shell diradical resonance form has restored aromaticity throughout the compound. Methods to tune the diradical character of these compounds have traditionally focused on altering the length and the molecular composition of the π-conjugated backbones. However, other molecular design stra ...
DOI:
10.1021/acs.jpcc.8b01905

4. Benzo[b]thiophene Fusion Enhances Local Borepin Aromaticity in Polycyclic Heteroaromatic Compounds

Author:
Yadav, Sangeeta,   et al.   ; Messersmith, Reid E.; Siegler, Maxime A.; Ottosson, Henrik; Tovar, John D.;     Show all 5 Authors
Source:
Journal of organic chemistry 2017 v.82 no.24 pp. 13440-13448
ISSN:
1520-6904
Subject:
alkynes; anions; aromatic compounds; boron; chemical reactions; fluorides; isomers; magnetism; moieties; organic chemistry; thiophene
Abstract:
... This report documents the synthesis, characterization, and computational evaluation of two isomeric borepin-containing polycyclic aromatics. The syntheses of these two isomers involved symmetrical disubstituted alkynes that were reduced to Z-olefins followed by borepin formation either through an isolable stannocycle intermediate or directly from the alkene via the trapping of a transient dilithio ...
DOI:
10.1021/acs.joc.7b02512

5. Production, purification and biochemical characterization of an exo-polygalacturonase from Aspergillus niger MTCC 478 suitable for clarification of orange juice

Author:
Yadav, Sangeeta,   et al.   ; Anand, Gautam; Yadav, Dinesh;     Show all 3 Authors
Source:
3 Biotech 2017 v.7 no.2 pp. 122
ISSN:
2190-572X
Subject:
Aspergillus niger; acetone; chromatography; clarification (processing); copper; enzyme activity; fungi; industrial applications; molecular weight; orange juice; pH; polygalacturonase; silver; solid state fermentation; tea; temperature; wheat bran
Abstract:
... Polygalacturonases (PG) represent an important member of pectinases group of enzymes with immense industrial applications. A fungal strain Aspergillus niger MTCC478 was used for the production of polygalacturonase both under submerged and solid-state fermentation condition. Further its production was optimized under solid-state fermentation condition with media comprising of wheat bran and tea ext ...
DOI:
10.1007/s13205-017-0760-3

6. Purification and characterization of a highly alkaline pectin lyase from Fusarium lateritum MTCC 8794

Author:
Yadav, Sangeeta,   et al.   ; Maurya, Sumeet Kumar; Anand, Gautam; Dwivedi, Ritika; Yadav, Dinesh;     Show all 5 Authors
Source:
Biologia 2017 v.72 no.3 pp. 245-251
ISSN:
1336-9563
Subject:
Fusarium; ammonium sulfate; cation exchange chromatography; cations; pH; pectin lyase; polyacrylamide gel electrophoresis; solid state fermentation; temperature
Abstract:
... A highly alkaline pectin lyase (PNL) produced by Fusarium lateritum MTCC 8794 using solid-state fermentation was purified and biochemically characterized. The enzyme was purified to homogeneity by comparatively simple method involving ammonium sulfate precipitation and cation exchange chromatography resulting in a final purification fold of 5.5 with specific activity of 1.9 U/mg and yield of 3.42% ...
DOI:
10.1515/biolog-2017-0038

7. Purification and biochemical characterization of an exo-polygalacturonase from Aspergillus flavus MTCC 7589

Author:
Yadav, Sangeeta,   et al.   ; Anand, Gautam; Yadav, Dinesh;     Show all 3 Authors
Source:
Biocatalysis and agricultural biotechnology 2017 v.10 pp. 264-269
ISSN:
1878-8181
Subject:
vegetable juices; polyacrylamide gel electrophoresis; polygalacturonase; gel chromatography; Aspergillus flavus; acetone; cellulose; orange juice; molecular weight; metal ions; cobalt; copper; pectins; calcium; plant parasitic nematodes; yeasts; potassium; temperature; mercury; food industry; silver; pH; bacteria
Abstract:
... Polygalacturonases represents an important member of pectin-degrading glycoside hydrolases of the family GH28 and is widely distributed among fungi, bacteria, yeasts, plants and some plant parasitic nematodes. Microbial polygalacturonases are widely used in food industry to clarify fruit and vegetable juice by degrading pectin. An exo- polygalacturonase from Aspergillus flavus MTCC 7589 was purifi ...
DOI:
10.1016/j.bcab.2017.03.018

8. Phytoextraction potential of heavy metals by native wetland plants growing on chlorolignin containing sludge of pulp and paper industry

Author:
Yadav, Sangeeta,   et al.   ; Chandra, Ram; Yadav, Sheelu;     Show all 3 Authors
Source:
Ecological engineering 2017 v.98 pp. 134-145
ISSN:
0925-8574
Subject:
Brassica rapa subsp. oleifera; Cannabis sativa; Eclipta prostrata; Phragmites; Ricinus; Rumex dentatus; Solanum nigrum; Triticum aestivum; aerial parts; bioaccumulation factor; cadmium; chromium; copper; ethane; gas chromatography-mass spectrometry; heavy metals; indigenous species; iron; lead; leaves; manganese; nickel; persistent organic pollutants; phytoremediation; pulp and paper industry; pulp and paper mill effluents; pulp and paper sludge; roots; shoots; sludge; wetland plants; zinc
Abstract:
... The results of physico-chemical analysis of pulp and paper mill effluent sedimented sludge revealed the presence of heavy metals (mgl−1) Fe (67.53), Zn (13.90), Cu (2.15), Cr (2.30), Cd (0.255), Mn (11.0), Ni (3.30), and Pb (1.05) along with persistent chlorolignin. The major persistent organic pollutants detected by GC–MS were ethane, 1,1-diethoxy; tetradecanoic acid; furane 2,5-dimethyl; n-hexad ...
DOI:
10.1016/j.ecoleng.2016.10.017

9. Comparative assessment of methods for metagenomic DNA isolation from soils of different crop growing fields

Author:
Yadav, Sangeeta,   et al.   ; Tanveer, Aiman; Yadav, Dinesh;     Show all 3 Authors
Source:
3 Biotech 2016 v.6 no.2 pp. 220
ISSN:
2190-572X
Subject:
DNA; Tectona grandis; analytical kits; enzymes; forests; humic acids; metagenomics; polymerase chain reaction; ribosomal RNA; soil; soil sampling
Abstract:
... The isolation of good quality metagenomic DNA from diverse soil, in appreciable amount, is a prerequisite for metagenomics. The availability of commercial kits for isolation of genomic DNAs from soil has drastically expedited the application of metagenomics approach for identifying novel sources of industrially important enzymes. The quantitative and qualitative assessment of metagenomic DNA isola ...
DOI:
10.1007/s13205-016-0543-2

10. Purification and characterization of polygalacturonase from Aspergillus fumigatus MTCC 2584 and elucidating its application in retting of Crotalaria juncea fiber

Author:
Yadav, Sangeeta,   et al.   ; Anand, Gautam; Yadav, Dinesh;     Show all 3 Authors
Source:
3 Biotech 2016 v.6 no.2 pp. 201
ISSN:
2190-572X
Subject:
Aspergillus fumigatus; Crotalaria juncea; EDTA (chelating agent); acetone; bacteria; calcium; copper; enzyme activity; gel chromatography; industrial applications; mercury; metal ions; molecular weight; pH; plant parasitic nematodes; polyacrylamide gel electrophoresis; polygalacturonase; potassium; retting; silver; solid state fermentation; temperature; yeasts
Abstract:
... Polygalacturonases represents an important member of pectinases group of enzymes with diverse industrial applications and is widely distributed among fungi, bacteria, yeasts, plants and some plant parasitic nematodes. An endo-polygalacturonase from a new fungal source Aspergillus fumigatus MTCC 2584 was produced under solid-state fermentation conditions and was purified simply by acetone precipita ...
DOI:
10.1007/s13205-016-0517-4

11. Syntrophic co-culture of Bacillus subtilis and Klebsiella pneumonia for degradation of kraft lignin discharged from rayon grade pulp industry

Author:
Yadav, Sangeeta,   et al.   ; Chandra, Ram;     Show all 2 Author
Source:
Journal of Environmental Sciences 2015 v.33 pp. 229-238
ISSN:
1001-0742
Subject:
Bacillus subtilis; Klebsiella pneumoniae; Vigna radiata var. radiata; axenic culture; bacteria; biochemical oxygen demand; chemical oxygen demand; coculture; color; decolorization; gas chromatography-mass spectrometry; high performance liquid chromatography; lignin; mixed culture; pulp; pulp and paper industry; rayon; seed germination; wastewater
Abstract:
... In order to search the degradability of kraft lignin, the potential bacterial strains Bacillus subtilis (GU193980) and Klebsiella pneumoniae (GU193981) were isolated, screened and applied in axenic and co-culture conditions. Results revealed that mixed culture showed better decolorization efficiency (80%) and reduction of pollution parameters (COD 73% and BOD 62%) than axenic culture. This indicat ...
DOI:
10.1016/j.jes.2015.01.018

12. Purification and biochemical characterization of an alkaline pectin lyase from Fusarium decemcellulare MTCC 2079 suitable for Crotolaria juncea fiber retting

Author:
Yadav, Sangeeta,   et al.   ; Dubey, Amit Kumar; Anand, Gautam; Kumar, Reetesh; Yadav, Dinesh;     Show all 5 Authors
Source:
Journal of basic microbiology 2014 v.54 no.S1 pp. S161
ISSN:
0233-111X
Subject:
Citrus; Fusarium decemcellulare; activation energy; ammonium sulfate; carboxymethylcellulose; denaturation; fractionation; gel chromatography; molecular weight; pH; pectin lyase; pectins; polyacrylamide gel electrophoresis; retting; sodium carbonate; sodium dodecyl sulfate; solid state fermentation; temperature
Abstract:
... An extracellular pectin lyase secreted by Fusarium decemcellulare MTCC 2079 under solid state fermentation condition has been purified to electrophoretic homogeniety by using ammonium sulfate fractionation, carboxymethyl cellulose and gel filtration (Sephadex G‐100) column chromatographies. The purified enzyme showed single protein band corresponding to molecular mass 45 ± 01 kDa on sodium dodecyl ...
DOI:
10.1002/jobm.201300281

13. Alleviation of Salinity Stress With Sodium Nitroprusside in Tomato

Author:
Yadav, Sangeeta,   et al.   ; Hayat, Shamsul; Nasser Alyemeni, Mohammed; Irfan, Mohd; Wani, Arif Shafi; Ahmad, Aqil;     Show all 6 Authors
Source:
International journal of vegetable science 2013 v.19 no.2 pp. 164-176
ISSN:
1931-5279
Subject:
Solanum lycopersicum; carbonate dehydratase; electrical conductivity; nitroprusside; salt stress; seed treatment; sodium chloride; sowing; tomatoes; water content
Abstract:
... Tomato (Solanum lycopersicum L.) is moderately salt sensitive and yield can be reduced by 50% when exposed to a 7.5 dS·m⁻¹ electrical conductivity (EC) saline solution. The response of tomato, cv. K-21, to presowing seed treatment with sodium chloride (NaCl) and sodium nitroprusside (SNP) was investigated. Before sowing, surface-sterilized seed of tomato were soaked in 50, 100, or 150 mM NaCl for ...
DOI:
10.1080/19315260.2012.697107

14. Antibody persistence of two pentavalent DTwP–HB–Hib vaccines to the age of 15–18 months, and response to the booster dose of quadrivalent DTwP–Hib vaccine

Author:
Yadav, Sangeeta,   et al.   ; Sharma, Hitt; Lalwani, Sanjay; Kapre, Subhash; Jadhav, Suresh; Parekh, Sameer; Palkar, Sonali; Ravetkar, Satish; Bahl, Sunil; Kumar, Rakesh; Shewale, Sunil;     Show all 11 Authors
Source:
Vaccine 2013 v.31 no.3 pp. 444-447
ISSN:
0264-410X
Subject:
Haemophilus influenzae; antibodies; antigens; children; fever; hepatitis B; immune response; pain; tetanus; vaccination; vaccines
Abstract:
... Antibody persistence in children following three doses of primary vaccination with diphtheria, tetanus, whole-cell-pertussis (DTwP), hepatitis B, and Haemophilus influenzae type b (Hib) vaccines (SIIL Pentavac vaccine vs. Easyfive® of Panacea Biotec), and response to the booster dose of DTwP–Hib (Quadrovax®) vaccine.Children who completed their primary immunization were assessed for antibodies at ...
DOI:
10.1016/j.vaccine.2012.11.038

15. Effect of heavy metals and phenol on bacterial decolourisation and COD reduction of sucrose-aspartic acid Maillard product

Author:
Yadav, Sangeeta,   et al.   ; Chandra, Ram;     Show all 2 Author
Source:
Journal of Environmental Sciences 2013 v.25 pp. 172-180
ISSN:
1001-0742
Subject:
manganese; molasses; zinc; decolorization; heavy metals; iron; binding properties; phenol; scanning electron microscopes; shrinkage; microbial growth; sugarcane; melanoidins; chemical oxygen demand; distillery effluents; bacteria
Abstract:
... Melanodins are amino-carbonyl complex, predominantly present in sugarcane molasses based distillery wastewater as major source of colourant. The microbial decolourisation of melanoidin is a challenge due to its binding property with other co-pollutants of distillery waste. Results revealed that the presence of Zn2+ (2.00-20.00 mg/L) in melanoidin solution (1200 mg/L) stimulated the bacterial growt ...
DOI:
10.1016/S1001-0742(12)60016-3

16. Characterization of a neutral pectin lyase produced by Oidiodendron echinulatum MTCC 1356 in solid state fermentation

Author:
Yadav, Sangeeta,   et al.   ; Dubey, Amit Kumar; Anand, Gautam; Yadav, Dinesh;     Show all 4 Authors
Source:
Journal of basic microbiology 2012 v.52 no.6 pp. 713-720
ISSN:
0233-111X
Subject:
Citrus; Crotalaria juncea; EDTA (chelating agent); activation energy; agricultural wastes; ammonium sulfate; anion exchange; denaturation; enzyme activity; enzyme inhibition; enzyme inhibitors; fungi; metal ions; pH; pectin lyase; pectins; polyacrylamide gel electrophoresis; potassium permanganate; retting; solid state fermentation; temperature; wheat bran
Abstract:
... A neutral pectin lyase produced by a new fungal strain Oidiodendron echinulatum MTCC 1356 under solid state fermentation using wheat bran as agro waste has been studied. The enzyme was purified by ammonium sulphate precipitation (30–60%), DEAE anion exchange and Sephadex G‐100 column chromatographies. The SDS‐PAGE and native PAGE revealed two bands of sizes 42 and 47 kDa. The enzyme was purified 3 ...
DOI:
10.1002/jobm.201100326

17. Purification and characterization of an exo-polygalacturonase secreted by Rhizopus oryzae MTCC 1987 and its role in retting of Crotalaria juncea fibre

Author:
Yadav, Sangeeta,   et al.   ; Anand, Gautam; Dubey, Amit; Yadav, Dinesh;     Show all 4 Authors
Source:
Biologia 2012 v.67 no.6 pp. 1069-1074
ISSN:
1336-9563
Subject:
Citrus; Crotalaria juncea; EDTA (chelating agent); Rhizopus oryzae; ammonium sulfate; anion exchange chromatography; cellulose; fractionation; galacturonic acid; gel electrophoresis; mercury; molecular weight; pH; polygalacturonase; potassium permanganate; retting; silver; sodium; submerged fermentation; temperature
Abstract:
... An acidic polygalacturonase (PG) secreted by Rhizopus oryzae MTCC-1987 in submerged fermentation condition has been purified to electrophoretic homogeneity using ammonium sulphate fractionation and anion exchange chromatography on diethylaminoethyl cellulose. The purified enzyme gave a single protein band in sodium dodecyl sulphatepolyacrylamide gel electrophoresis analysis with a molecular mass c ...
DOI:
10.2478/s11756-012-0122-x

18. Comparison of the Influence of 28-Homobrassinolide and 24-Epibrassinolide on Nitrate Reductase Activity, Proline Content, and Antioxidative Enzymes of Tomato

Author:
Yadav, Sangeeta,   et al.   ; Hayat, Shamsul; Wani, Arif Shafi; Irfan, Mohammad; Ahmad, Aqil;     Show all 5 Authors
Source:
International journal of vegetable science 2012 v.18 no.2 pp. 161-170
ISSN:
1931-5279
Subject:
Solanum lycopersicum; antioxidant activity; antioxidants; biotic stress; brassinosteroids; crops; genetically modified organisms; hormones; isomers; leaves; mutants; nitrate reductase; plant hormones; plant response; proline; tomatoes
Abstract:
... Brassinosteroids (BRs) are a class of polyhydroxysteroid plant hormones. The sensitivity of a crop to abiotic/biotic stress is a functional aspect of its response as regulated by the efficient internal buildup of hormones like BRs. A better understanding of how the brassinosteroid isomers differentially affect plant responses in tomato (Solanum lycopersicum L.) is necessary to improve production. ...
DOI:
10.1080/19315260.2011.593614

19. In Silico Characterization of Alkaline Proteases from Different Species of Aspergillus

Author:
Yadav, Sangeeta,   et al.   ; Morya, Vivek Kumar; Kim, Eun-Ki; Yadav, Dinesh;     Show all 4 Authors
Source:
Applied biochemistry and biotechnology 2012 v.166 no.1 pp. 243-257
ISSN:
0273-2289
Subject:
Aspergillus clavatus; Aspergillus fumigatus; Aspergillus niger; Aspergillus oryzae; amino acid sequences; amino acids; phylogeny; sequence alignment; serine proteinases
Abstract:
... A total of 49 protein sequences of alkaline proteases retrieved from GenBank representing different species of Aspergillus have been characterized for various physiochemical properties, homology search, multiple sequence alignment, motif, and super family search and phylogenetic tree construction. The sequence level homology was obtained among different groups of alkaline protease enzymes, viz alk ...
DOI:
10.1007/s12010-011-9420-y
PubMed:
22072140

20. Phenol degradation by Paenibacillus thiaminolyticus and Bacillus cereus in axenic and mixed conditions

Author:
Yadav, Sangeeta,   et al.   ; Chandra, Ram; Bharagava, Ram Naresh; Rai, Vibhuti;     Show all 4 Authors
Source:
World journal of microbiology & biotechnology 2011 v.27 no.12 pp. 2939-2947
ISSN:
0959-3993
Subject:
Bacillus cereus; Paenibacillus thiaminolyticus; bacteria; glucose; high performance liquid chromatography; mineralization; mixed culture; pH; phenol; salts; temperature; wastewater
Abstract:
... In this study, seven aerobic bacterial strains were screened for phenol tolerance at different concentration of phenol. Bacterial strains were unable to utilize phenol in absence of glucose, indicated the phenomenon of co-metabolism. Among the seven isolated bacterial strains, only ITRC BK-4 and ITRC BK-7 found potential and identified as Paenibacillus thiaminolyticus (DQ435022) and Bacillus cereu ...
DOI:
10.1007/s11274-011-0777-4