Result 1 - 10 of total 14
A review"
2020
| Keywords | covid19 |
|---|---|
| Publisher | Wiley |
| Publishing country | us |
| Document type | Book ; Online |
| DOI | 10.1002/btpr.3078/v2/response1 |
| Database | BASE - Bielefeld Academic Search Engine (life sciences selection) |
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Journal of Taibah University for Science, Vol 15, Iss 1, Pp 347-
2021 Volume 356
Abstract: The present study was focused on the potentiality of agro-based residues for the production of pectinase to meet the growing market demand by improving the yield with low cost of production. Among the agro-based residues used for the production of ... ...
| Abstract | The present study was focused on the potentiality of agro-based residues for the production of pectinase to meet the growing market demand by improving the yield with low cost of production. Among the agro-based residues used for the production of pectinase, apple pomace was able to produce the maximum of 1366.30 ± 36.71 U/ml using Aspergillus parvisclerotigenus KX928754 in liquid static surface fermentation, followed by sugarcane bagasse (973.12 ± 22.43 U/ml) and used tea (686.7 ± 45.06 U/ml). The process parameters optimization using a single variable at a time affirmed that pH 7.0, incubation period of 168 h, 30°C temperature, sucrose 2% as carbon source and peptone 3% as nitrogen source was found to be optimum for better production. The crude filtrate was purified by precipitation, dialyzed, eluted on Sephadex G-100 column followed by lyophilization and stored at −20°C. A. parvisclerotigenus KX928754 pectinase was purified to 2.10-fold, 2.91% of yield rate and having a specific activity of 1081.66 U/mg. Moreover, the electrophoretic analysis through sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) revealed 37.4 kDa of protein from the purified pectinase. Thus, the use of apple pomace as a substrate for scaling up pectinase with efficient recovery could reduce the price of the enzyme and increase its avenue for different industrial exploitation. |
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| Keywords | agro-based residue ; apple pomace ; aspergillus parvisclerotigenus ; pectinase ; liquid static surface fermentation ; Science (General) ; Q1-390 |
| Subject code | 660 |
| Language | English |
| Publishing date | 2021-01-01T00:00:00Z |
| Publisher | Taylor & Francis Group |
| Document type | Article ; Online |
| Database | BASE - Bielefeld Academic Search Engine (life sciences selection) |
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Journal of environmental management. 2017 Feb. 01, v. 187
2017
Abstract: Acid as well as ultrasono-assisted acid pretreatment of lignocellulosic biomass of two Pennisetum sp.; Denanath grass (DG) and Hybrid Napier grass (HNG) have been investigated for enhanced delignification and maximum exposure of cellulose for production ... ...
| Abstract | Acid as well as ultrasono-assisted acid pretreatment of lignocellulosic biomass of two Pennisetum sp.; Denanath grass (DG) and Hybrid Napier grass (HNG) have been investigated for enhanced delignification and maximum exposure of cellulose for production of bioethanol. Screening of pretreatment with different acids such as H2SO4, HCl, H3PO4 and H2NO3 were optimized for different temperature, soaking time and acid concentrations using Taguchi orthogonal array and the data obtained were statistically validated using artificial neural networking. HCl was found to be the most effective acid for pretreatment of both the Pennisetum sp. The optimized conditions of HCl pretreatment were acid concentration of 1% and 1.5%, soaking time 130 and 50 min and temperature 121 °C and 110 °C which yielded maximum delignification of 33.0% and 33.8% for DG and HNG respectively. Further ultrosono-assisted HCl pretreatment with a power supply of 100 W, temperature of 353 K, and duty cycle of 70% has resulted in significantly higher delignification of 80.4% and 82.1% for both DG and HNG respectively than that of acid pretreatment. Investigation using SEM, FTIR and autofloresence microscopy for both acid and ultrasono-assisted acid pretreatment lignocellulosic biomass revealed conformational changes of pretreated lignocellulosic biomass with decreased lignin content and increased exposure of cellulose, with greater effectiveness in case of ultrasono assisted acid pretreatment condition. |
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| Keywords | Cenchrus purpureus ; Fourier transform infrared spectroscopy ; bioethanol ; biomass ; cellulose ; delignification ; experimental design ; grasses ; hybrids ; hydrochloric acid ; lignin ; lignocellulose ; models ; phosphoric acid ; physicochemical properties ; scanning electron microscopy ; screening ; soaking ; sulfuric acid ; temperature |
| Language | English |
| Dates of publication | 2017-0201 |
| Size | p. 537-549. |
| Publishing place | Elsevier Ltd |
| Document type | Article |
| ZDB-ID | 184882-3 |
| ISSN | 1095-8630 ; 0301-4797 |
| ISSN (online) | 1095-8630 |
| ISSN | 0301-4797 |
| DOI | 10.1016/j.jenvman.2016.09.060 |
| Database | NAL-Catalogue (AGRICOLA) |
| Z 7556: Show issues |
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Clinical Phytoscience, Vol 4, Iss 1, Pp 1-
2018 Volume 10
Abstract: Abstract Background Avicennia officinalis is a medicinally important mangrove plant and used in traditional medicinal practices to treat various ailments like rheumatism, paralysis, asthma, dyspepsia, tumors etc. The objective of the present study was to ...
| Abstract | Abstract Background Avicennia officinalis is a medicinally important mangrove plant and used in traditional medicinal practices to treat various ailments like rheumatism, paralysis, asthma, dyspepsia, tumors etc. The objective of the present study was to evaluate the carbohydrate metabolizing enzyme inhibitory, antioxidant, antimicrobial and cytotoxic potentials of ethanol leaf and bark extracts of A. officinalis. Methods The carbohydrate metabolizing enzyme inhibition potential was studied by α-amylase and α-glucosidase inhibitory activities. The antioxidant activity was investigated by measuring the scavenging potential of extracts against DPPH, ABTS and superoxide radicals. The antimicrobial activity was studied by agar well diffusion method and the cytotoxicity potential by MTT assay. Results The study revealed that A.offiicnalis bark extract inhibited the activity of α-amylase and α-glucosidase in a dose dependent manner with an IC50 value of 0.66 and 0.71 mg/ml respectively. The leaf extract also demonstrated inhibition potential against α-amylase and α-glucosidase with an IC50 value of 0.29 and 1.19 mg/ml respectively. The ethanol bark extract also exhibited scavenging potential against DPPH, ABTS and superoxide radicals in a dose dependent manner with IC50 values of 112, 114 and 82 μg/ml respectively and ethanol leaf extract with IC50 values of 200, 41.9 and 207.6 μg/ml respectively. Both leaf and bark extracts exhibited dose dependent antiproferative activity on TC1 murine cell lines. Both leaf and bark extracts exhibited antimicrobial activity against bacteria (Bacillus subtilis, Escherichia coli, Pseudomonas aeruginosa and fungi (Candida albicans, C. krusei). The qualitative phytochemical assay, UV-Vis and FTIR analysis revealed the presence of different phytoconstituents in the leaf and bark extracts of A.officinalis. Conclusion The results suggest that ethanol leaf and bark extracts of A.officinalis were effective in inhibiting α-amylase and α-glucosidase and also have antioxidant, antimicrobial ... |
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| Keywords | Avicennia officinalis ; Antidiabetic ; Antioxidant ; Antimicrobial ; Cytotoxic ; Medicine ; R ; Homeopathy ; RX1-681 |
| Subject code | 580 |
| Language | English |
| Publishing date | 2018-05-01T00:00:00Z |
| Publisher | SpringerOpen |
| Document type | Article ; Online |
| Database | BASE - Bielefeld Academic Search Engine (life sciences selection) |
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Brazilian Archives of Biology and Technology, Vol 56, Iss 2, Pp 171-
2013 Volume 179
Abstract: The aim of this work was to study the optimiation of co-culturing of Trichoderma sp. and Saccharomyces cerevisiae (1:4 ratio) on sweet potato (Ipomoea batatas L.) flour (SPF) for the production of bio-ethanol in solid-state fermentation (SSF). Maximum ... ...
| Abstract | The aim of this work was to study the optimiation of co-culturing of Trichoderma sp. and Saccharomyces cerevisiae (1:4 ratio) on sweet potato (Ipomoea batatas L.) flour (SPF) for the production of bio-ethanol in solid-state fermentation (SSF). Maximum ethanol (172 g/kg substrate) was produced in a medium containing 80% moisture, ammonium sulphate 0.2%, pH 5.0, inoculuted with 10% inoculum size and fermented at 30ºC for 72h. .Concomitant with highest ethanol concentration, maximum ethanol productivity (2.8 g/kg substrate/h), microbial biomass (23×10(8) CFU/ g substrate), ethanol yield (47 g/100g sugar consumed) and fermentation efficiency (72%) were also obtained under these conditions. Cell interaction was observed familiar between the viable cells of Trichoderma sp. and S. cerevisiae when co-cultured. Ethanol production ability by the co-culture was 65 % higher than the single culture of S. cerevisiae from un-saccharified SPF. |
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| Keywords | Trichoderma sp. ; Saccharomyces cerevisiae ; Sweet potato flour ; Solid state fermentation ; Biotechnology ; TP248.13-248.65 ; Chemical technology ; TP1-1185 ; Technology ; T ; DOAJ:Biotechnology ; DOAJ:Life Sciences ; DOAJ:Biology and Life Sciences |
| Subject code | 660 ; 571 |
| Language | English |
| Publishing date | 2013-04-01T00:00:00Z |
| Publisher | Brazilian Archives of Biology and Technology |
| Document type | Article ; Online |
| Database | BASE - Bielefeld Academic Search Engine (life sciences selection) |
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Evidence-Based Complementary and Alternative Medicine, Vol
2019 Volume 2019
Abstract: Xylocarpus granatum is a medicinal mangrove plant, traditionally used for the treatment of diarrhoea, cholera, fever, dyslipidaemia, inflammation, etc. The present study was aimed to evaluate the in vitro antidiabetic (α-glucosidase inhibition assay) and ...
| Abstract | Xylocarpus granatum is a medicinal mangrove plant, traditionally used for the treatment of diarrhoea, cholera, fever, dyslipidaemia, inflammation, etc. The present study was aimed to evaluate the in vitro antidiabetic (α-glucosidase inhibition assay) and antioxidant (ABTS scavenging and metal chelating assay) activities of ethanol, methanol, and aqueous extracts of leaves and barks of X. granatum followed by in vivo antidiabetic and antioxidant evaluation of ethanol bark extracts in streptozotocin- (STZ-) induced diabetic mice. The in vitro evaluation revealed higher α-amylase inhibition and ABTS scavenging activities in ethanol bark extracts of X. granatum (XGEB). Administration of XGEB at 100 and 200 mg/kg BW doses to STZ-induced diabetic mice resulted in significant decrease (P < 0.05) in blood glucose, triglyceride (TG), total cholesterol (TC), serum glutamate oxaloacetate transaminase (SGOT), serum glutamate pyruvate transminase (SGPT), and urea levels in the serum of the extract administered groups as compared to diabetic control group. The levels of SOD, CAT, GPx, GR, and GST in liver along with LPx, SOD, GST, and GR activities in brain tissues were found to be ameliorated in XGEB treated diabetic mice. Histopathological alternations of liver tissues were also found to be restored in XGEB treated diabetic groups. The HPLC fingerprint analysis of XGEB revealed the presence of simple polyphenols, isoflavone, and flavonol-like compounds. The DSC and UV-VIS analysis also confirmed the presence of phenolic compounds in XGEB. The GC-MS analysis of XGEB showed the presence of a number of bioactive compounds. These results demonstrated the beneficial effect of XGEB in controlling hyperglycaemia and ameliorating oxidative stress associated complications associated with diabetes. |
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| Keywords | Other systems of medicine ; RZ201-999 |
| Language | English |
| Publishing date | 2019-01-01T00:00:00Z |
| Publisher | Hindawi Limited |
| Document type | Article ; Online |
| Database | BASE - Bielefeld Academic Search Engine (life sciences selection) |
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Chemistry in ecology. 2017 Feb. 7, v. 33, no. 2
2017
Abstract: Hexavalent chromium-tolerant (1500â mg/L) bacterium MW1 was isolated from harbour water of Paradip Port and evaluated for Cr(VI) reduction potential. The isolate was identified as Exiguobacterium indicum by biochemical and 16S rRNA gene sequence methods. ...
| Abstract | Hexavalent chromium-tolerant (1500â
mg/L) bacterium MW1 was isolated from harbour water of Paradip Port and evaluated for Cr(VI) reduction potential. The isolate was identified as Exiguobacterium indicum by biochemical and 16S rRNA gene sequence methods. Salt tolerance of the bacterium was evaluated in a wide range of NaCl concentrations (0.5â13%, w/v). The Cr(VI) reduction of the strain was evaluated and optimised with varied Cr(VI) concentrations (100â1000â
mg/L), pH (5.0â9.0), temperature (30â40°C) and shaking velocity (100â150â
rpm) in two different minimal media (M9 and Acetate). Under optimised conditions, after 192â
h of incubation nearly 92%, 50% and 46% reduction in the M9 minimal medium and 91%, 47% and 40% reduction in the acetate minimal medium were observed for 100, 500 and 1000â
mg/L of Cr(VI), respectively. The exponential rate equation for Cr(VI) reduction yielded higher rate constant value, that is, 1.27âÃâ10 â»Â²â
h â»Â¹ (M9) and 1.17âÃâ10 â»Â²â
h â»Â¹ (Acetate) in case of 100â
mg/L and became lower for 500 and 1000â
mg/L Cr(VI) concentrations. Further, the association of bacterial cells with reduced product was ascertained by Fourier transform infrared spectrometer, UVâVisâDRS and field-emission scanning electron microscopeâenergy-dispersive X-ray analyses. The above study suggests that the higher reducing ability of the marine bacterium E. indicum MW1 will be suitable for Cr(VI) reduction from saline effluents. |
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| Keywords | acetates ; bacteria ; chromium ; effluents ; equations ; Exiguobacterium ; Fourier transform infrared spectroscopy ; nucleotide sequences ; pH ; ribosomal RNA ; salt tolerance ; sodium chloride ; temperature ; X-radiation ; India |
| Language | English |
| Dates of publication | 2017-0207 |
| Size | p. 114-130. |
| Publishing place | Taylor & Francis |
| Document type | Article |
| ZDB-ID | 2038286-8 |
| ISSN | 1029-0370 ; 0275-7540 |
| ISSN (online) | 1029-0370 |
| ISSN | 0275-7540 |
| DOI | 10.1080/02757540.2016.1275586 |
| Database | NAL-Catalogue (AGRICOLA) |
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2017
Abstract: Medicinal mushrooms viz. Ganoderma applanatum, Ganoderma lipsiense, Ganoderma chalceum and Ganoderma tsugae are important forest products of Similipal Biosphere Reserve, India. The present study aimed to evaluate the chemical constituents, antioxidant ... ...
| Abstract | Medicinal mushrooms viz. Ganoderma applanatum, Ganoderma lipsiense, Ganoderma chalceum and Ganoderma tsugae are important forest products of Similipal Biosphere Reserve, India. The present study aimed to evaluate the chemical constituents, antioxidant and antibacterial potential of these mushrooms. The chemical constituents were determined in terms of macronutrients, micronutrients and phenolic contents. The macronutrient content of these mushrooms revealed high amounts of protein (17.10â20.50/100Â g), carbohydrate (41.80â59.16/100Â g) and low fats (1.2â3.0/100Â g) and possessed good quantities micronutrients (vitamins, carotenoids). Mushrooms showed strong antioxidant properties due to the presence of high phenol (27.40â220.41Â mg catechol/g extract) and flavonoid (3.42â171.44Â mg quercetin/g extract) content. All these mushrooms possess moderate antibacterial properties with zone of inhibition ranging from 11.76 to 18.83Â mm against five human pathogenic bacteria. Based on their rich bioactive compounds (vitamins and phenolics), antioxidant and antibacterial activity, they might be exploited by pharmaceutical and cosmetic industries. |
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| Keywords | Ganoderma applanatum ; Ganoderma lipsiense ; Ganoderma tsugae ; animal pathogenic bacteria ; antibacterial properties ; antioxidant activity ; antioxidants ; bioactive compounds ; carotenoids ; catechol ; conservation areas ; cosmetics ; forest products ; lipids ; medicinal fungi ; mushrooms ; phenol ; quercetin ; vitamins ; India |
| Language | English |
| Dates of publication | 2017-06 |
| Size | p. 559-570. |
| Publishing place | Springer India |
| Document type | Article |
| ZDB-ID | 2707745-7 |
| ISSN | 2250-1746 ; 0369-8211 |
| ISSN (online) | 2250-1746 |
| ISSN | 0369-8211 |
| DOI | 10.1007/s40011-015-0574-1 |
| Database | NAL-Catalogue (AGRICOLA) |
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Critical reviews in environmental science and technology. 2016 Nov. 16, v. 46, no. 21-22
2016
Abstract: Toxic hexavalent chromium (Cr â¶âº) released during various industrial and mining processes leads to serious environmental problems and health hazards. Cr â¶âº compounds are known to be highly toxic, mutagenic, teratogenic, and carcinogenic. ... ...
| Abstract | Toxic hexavalent chromium (Cr â¶âº) released during various industrial and mining processes leads to serious environmental problems and health hazards. Cr â¶âº compounds are known to be highly toxic, mutagenic, teratogenic, and carcinogenic. Microorganisms such as bacteria employ various resistance mechanisms such as ion transport (efflux), reduction, DNA repair, and so on to overcome chromate toxicity. The genes responsible for such activity are either located in chromosome or in the plasmid of bacteria. In total of 2557 chromate resistance genes found in bacteria (2,368), eukarya (171), and archea (18) have been retrieved from the National Center for Biotechnology Information (NCBI) gene database obtained from both culture-dependent and -independent methods and were analyzed for their function, location, and diversification. Further proteomic analysis revealed a hydrophobic membrane protein such as ChrA belong to the chromate ion transporter (CHR) superfamily found to be involved in efflux of chromate ion from the cell cytoplasm conferring chromate resistance in bacteria were retrieved from the NCBI database and categorized in two groups of monodomain proteins with a sequence length of 123â234 amino acids, called bacterial short-chain CHR (bacterial SCHR), and bidomain proteins with a sequence length of 345â495 amino acids, called bacterial long-chain CHR (bacterial LCHR). Phylogenetic divergence study of 237 LCHR and 121 SCHR proteins was conducted using the neighbor-joining method in MEGA6.0 and found to be clustered into four and six clusters, respectively. Apart from CHR superfamily, various groups of oxidoreductase enzymes such as chromate reductase, nitroreductase, iron reductase, quinone reductase, hydrogenase, flavin reductase, and nicotinamide adenine dinucleotide phosphate (NADPH)âdependent reductase showing potential toward reduction of chromate have also been identified in different microorganisms. Comparative structural analyses of seven well-studied enzymes involved in chromate reduction from Protein Data Bank database were categorized either NADPH-dependent flavin mononucleotide (FMN) reductase or FMN-dependent nitroreductase. In spite of structural diversity (e.g., tetramer/dimer, arrangements of helices/sheets/coils) all are found to be involved in chromate reduction. Chromate reductions mediated by transfer of electron from nicotinamide adenine dinucleotide to various substrates (electron acceptor such as chromate) through FMN cofactor. The anchoring amino acid residues such as Glu, Tyr, Ser, Asn, Phe and Arg interact with FMN in NADPH-dependent FMN reductases but Gly, Arg, and Ser are the interacting residues in FMN-dependent nitroreductase. Enzyme-specific domains such as PF00724, PF03358, and PF00881 are present in these enzymes. The enzymes with known structures and functions can be easily manipulated through protein engineering approach for potential applications. |
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| Keywords | amino acids ; bacteria ; bioinformatics ; chromium ; chromosomes ; cytoplasm ; DNA repair ; electron transfer ; ferredoxin hydrogenase ; genes ; genetic databases ; health hazards ; hydrophobicity ; membrane proteins ; mining ; mutagenicity ; NAD (coenzyme) ; NAD(P)H dehydrogenase (quinone) ; NADP (coenzyme) ; National Center for Biotechnology Information ; phylogeny ; plasmids ; protein engineering ; proteomics ; resistance mechanisms ; teratogenicity |
| Language | English |
| Dates of publication | 2016-1116 |
| Size | p. 1659-1703. |
| Publishing place | Taylor & Francis |
| Document type | Article |
| ZDB-ID | 2030115-7 |
| ISSN | 1547-6537 ; 1064-3389 |
| ISSN (online) | 1547-6537 |
| ISSN | 1064-3389 |
| DOI | 10.1080/10643389.2016.1258912 |
| Database | NAL-Catalogue (AGRICOLA) |
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Journal of photochemistry and photobiology. 2016 Oct., v. 163
2016
Abstract: Green synthesis by using biological agents has been a simple and effective approach for the synthesis of various forms of nanoparticles. The present investigation was intended to synthesis Ag-NPs and ZnO-NPs under photo-condition using the aqueous ... ...
| Abstract | Green synthesis by using biological agents has been a simple and effective approach for the synthesis of various forms of nanoparticles. The present investigation was intended to synthesis Ag-NPs and ZnO-NPs under photo-condition using the aqueous extracts of two mangrove plants namely Heritiera fomes and Sonneratia apetala and evaluate their potential biomedical applications. The formation of nanoparticles in aqueous solution of H. fomes and S. apetala under exposure to sun light was validated by change in color and formation of monodispersed NPs with a narrow particle size distribution. Fourier transform infrared spectroscopy (FT-IR) reveals the presence of Oxime and other heterocyclic compounds to be the most probable compounds responsible for the reduction and stability of nanoparticles in the solutions. The synthesized NPs displayed moderate free radical scavenging properties. The anti-inflammatory potential of ZnO-NPs was recorded to be comparatively higher than that of Ag-NP with 79% and 69.1% respectively. The Ag-NPs with unique properties of inhibiting α-amylase (91.14% and 89.16%) were found to be significantly high indicating its antidiabetic property. The synthesized NPs showed varied zone of inhibition (9–16mm) against the tested microbial pathogens. The synthesized nanoparticles possess strong biological activities in terms of antioxidant, anti-inflammatory, antidiabetic and antibacterial, potentials which could be utilized in various biological applications by the cosmetic, food and biomedical industries. |
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| Keywords | alpha-amylase ; anti-inflammatory activity ; aqueous solutions ; color ; Fourier transform infrared spectroscopy ; free radical scavengers ; Heritiera fomes ; heterocyclic compounds ; nanoparticles ; nanosilver ; particle size distribution ; pathogens ; silver ; Sonneratia ; zinc oxide |
| Language | English |
| Dates of publication | 2016-10 |
| Size | p. 311-318. |
| Publishing place | Elsevier B.V. |
| Document type | Article |
| ZDB-ID | 623022-2 |
| ISSN | 1873-2682 ; 1011-1344 |
| ISSN (online) | 1873-2682 |
| ISSN | 1011-1344 |
| DOI | 10.1016/j.jphotobiol.2016.07.029 |
| Database | NAL-Catalogue (AGRICOLA) |
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