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Tytuł:
A comparison of phytotoxic potential among the crude extracts from Parthenium hysterophorus L. extracted with solvents of increasing polarity
Autorzy:
Pati, U.K.
Chowdhury, A.
Powiązania:
https://bibliotekanauki.pl/articles/11232.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
comparison
phytotoxicity
Vigna radiata
crude extract
Parthenium hysterophorus
bioassay
hexane
ethyl acetate
methanol
solvent
Opis:
There is a worldwide search for the safe, effective and eco-friendly compounds of plant origin to combat the weed species and other pests which are responsible for the great impact on the growth and productivity of agricultural crops. In this present study, a comparison was made to evaluate the phytotoxicity potential of sequentially extracted solvent (hexane, ethyl-acetate, methanol) extracts of Parthenium hysterophorus L. (aerial parts) in vitro through bench-top seed germination assay (Vigna radiata L.). One-way analysis of variance (ANOVA) followed by Duncan’s multiple range test (DMRT) were done for statistical analysis of the data. The study reveals that germination, growth and vigour was significantly (P<0.05) reduced by ethyl-acetate and methanol extracts. The present study concluded that phytotoxicity of ethylacetate and methanolic crude extracts of Parthenium hysterophorus could be exploited as potential bioherbicide for future weed management programme and the development of bioherbicide for commercial use.
Źródło:
International Letters of Natural Sciences; 2015, 06
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diesel hydrocarbons biodegradation by Myroide odoratimimus
Autorzy:
Divya, U. K.
Saranya, A.
Suganthi, R.
Powiązania:
https://bibliotekanauki.pl/articles/1109628.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Biodegradation
Diesel
Diesel hydrocarbon
GC-MS analysis
Myroide odoratimimus
Soil
Opis:
Biodegradation can be a possible and effective retort to soil contamination by petroleum hydrocarbons. Nowadays there are many cases of accidental releases of petroleum products into the environment. Use of biological agents especially microorganism is effective in degradation of complex organic contaminants to other simpler organic compounds. In our present study role of Myroide odoratimimus in degrading the diesel components present in soil to simpler units were checked. The study demonstrates that Myroides odoratimimus (SKS 05) showed the ability to degrade diesel after 40 days of incubation in the diesel adsorbed soil with a growth rate of 6.2×106 CFU/ml and from the GC study Myroides odoratimimus degraded the component Dotriacontane (25.471), Hexatriacontane (27.98), Tetracosane (30.296), Pentatriacontane (32.42), Tetrapentacontane (34.39) present in the diesel adsorbed soil, which was confirmed by the reduction in the peak height and the peak area in comparison to the control {without Myroides odoratimimus (SKS 05).
Źródło:
World News of Natural Sciences; 2018, 20; 182-195
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Studies on the effect of different insecticidal applications on quality, nutritional parameters and total antioxidant capacity of brinjal (Solanum melongena L.)
Autorzy:
Goswami, M.R.
Pati, U.K.
Maity, P.
Mukhopadhyay, A.
Powiązania:
https://bibliotekanauki.pl/articles/11702.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Źródło:
International Letters of Natural Sciences; 2018, 69
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bdellovibrio and like organisms: The much-anticipated “magic bullet”
Autorzy:
Ebana, R. U. B.
Edet, U. O.
Anosike, I. K.
Etok, C. A.
Powiązania:
https://bibliotekanauki.pl/articles/1077314.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Antimicrobial agent
Bdellovibrio
Predation
Resistance
biocontrol agents
Opis:
With advances in next generation sequencing and microscopy, a clearer picture is beginning to emerge about the predatory properties of Bdellovibrio and like organisms (BALOs). BALOs are Gram negative microorganisms which are natural predators of other Gram-negative microorganisms, especially those associated with diseases in humans and animals. One of the limitations of BALOs is their inability to prey upon Gram-positive organisms that cause the bulk of human diseases. The global spread of antibiotics resistance to almost every group of antibiotics, and the paucity of newer antibiotics since 1970s is very worrisome. The ability of BALOs to decimate pathogen populations principally those carrying multidrug résistance genes coupled with the increasing rate of antibiotics resistance, has made them an attractive option as biocontrol agents. With the absence of resistance to BALOs, these much anticipated “magic bullets” will certainly find more and more applications in health, agriculture, medicine and environment in the nearest future.
Źródło:
World News of Natural Sciences; 2019, 23; 233-249
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Anti-Snake venom Activities of the leaf extracts of Asystasia gangetica (L) and Newbouldia leavis (p. Beauv)
Autorzy:
Enenebeaku, C. K.
Umerie, S. C.
Nwankwo, M. U.
Enenebeaku, U. E.
Powiązania:
https://bibliotekanauki.pl/articles/1112887.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Asystasia gangetica
Medicinal plants
Naja melanoleuca
Newbouldia leavis
Snake Venom
Opis:
The leaf extracts of two medicinal plants Asystasia gangetica (L) and Newboulia leavis (p. Beauv) were assessed for anti-snake venom activity in vivo using mice. The result of the phytochemical analysis revealed that the two plants contain flavonoids, glycosides, saponins, tannins and alkaloids. The methanolic extracts of the two plants A. gangetica (L) and N. leavis (p. Beauv) significantly (p< 0.05) neutralized the Naja melanoleuca venom-induced lethality activity in the mice. The extracts (flavonoids, tannins and saponins) of the two plants also showed significant (p<0.05) neutralization of the venom–induced lethality activity in mice. The work confirmed that Asystasia gangetica and Newbouldia leavis possess significant anti-venom activity and can therefore be used in the treatment of snake bites.
Źródło:
World News of Natural Sciences; 2018, 16; 33-41
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Isolation of vanconycin resistant Staphylococcus aureus from the wounds of hospital patients in Uyo, Akwa Ibom State, Nigeria
Autorzy:
Anosike, I. K.
Ebana, R. U. B.
Edet, U. O.
Umoh, I. S.
Powiązania:
https://bibliotekanauki.pl/articles/1076716.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Methicillin
Staphylococcus aureus
Vancomycin
Wounds
antibiotic resistance
Opis:
Staphylococcus aureus is a very important human pathogen that generates a number of human infections. Isolation of vancomycin-resistant Staphylococcus aureus (VRSA) was carried out from wound samples of patients attending University of Uyo Teaching Hospital, Akwa Ibom state, Nigeria. A total of 45 wound samples from 15 patients were collected aseptically in triplicate, using sterile cotton swabs moistened in sterile normal saline. Microbiological analysis and susceptibility to vancomycin, including minimum inhibitory and minimum bactericidal concentrations (MIC and MBC), were carried out using standard methodologies. A total of 15 isolates were obtained and these showed varying MIC and MBC patterns. Out of the 15 S. aureus isolated, only one isolate had an MIC of approximately 4 µg/ml, while twelve isolates gave MIC values that ranged from 15.62 µg/ml to 250 µg/ml. The remaining 2 isolates gave MIC values that were ≥ 500 µg/ml. These 2 isolates exhibited alpha haemolysis on blood agar, unlike the others that were beta haemolytic. The results of the MBC also showed variations amongst the isolates. A total of 10 isolates gave MBC values that ranged from 62.5 µg/ml to 500 µg/ml, while the remaining 5 isolates gave MBC values that were ≥ 500 µg/ml. The high MIC and MBC values obtained showed that vancomycin-resistant Staphylococcus aureus is increasing at an alarming rate, and this accounts for the gradual decline in the effectiveness associated with the use of vancomycin. Given the widespread prevalence of VRSA, there is a need for newer therapeutics that can reverse this surge.
Źródło:
World News of Natural Sciences; 2019, 24; 134-144
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microwave Assisted Synthesis of Some Novel Sulphonamide Bearing Pyrazolone Core Structure
Autorzy:
Namera, D. L.
Kapadiya, K. M.
Chhatrola, M. M.
Bhoya, U. C.
Powiązania:
https://bibliotekanauki.pl/articles/412446.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
pyrazolone
arylidene
sulphonamide
Opis:
We have described some novel Sulphonamide bearing pyrazoline derivatives synthesized by conventional method as well as microwave assisted method of synthesis. The reaction of 4-(3-methyl-5-oxo-4,5-dihydro-1-H-pyrazol-1-yl)benzenesulphonamide with substituted benzaldehyde in the presence of Methanol as solvent and piperidine as catalyst, generated a series of substituted pyrazolone derivatives 4a-m. The structures of all synthesized compounds are well characterized by Mass spectroscopy, FT-IR, 1H NMR and elemental analysis. After obtaining experimental data regarding the yield and the time taken for the synthesis by both the approaches, convenient and microwave assisted method, it was ascertained that the microwave assisted method is more suitable for synthesis of pyrazolone derivatives 4a-m.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 11, 2; 116-126
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrothermal fabrication of CeVO4 nanoflowers assisted effective photocatalytic mineralization of aqueous methylene blue solution
Autorzy:
Muthuvel, I.
Jayasri, U.
Gowthami, K.
Kumar, N. Dinesh
Thirunarayanan, G.
Balakrishnan, K.
Rajachandrasekar, T.
Powiązania:
https://bibliotekanauki.pl/articles/1031461.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
CeVO4
Cerium vanadate
Methylene Blue
Photocatalyst
Wastewater treatment
Opis:
A tetragonal zircon type cerium vanadate (CeVO4) photocatalyst was successfully synthesized hydrothermal method using Ce(NH4)2(NO3)6 and NH4VO3. The products were characterized using the FT-IR, XRD, FE-SEM and UV-DRS. The XRD results show that crystallite size of cerium vanadate is 27.2 nm. The effect of operational parameters such as effect of pH, catalyst suspension, initial dye concentration and reusability were observed. Hence the catalyst can be reused for continuous treatment of wastewater.
Źródło:
World Scientific News; 2020, 142; 103-119
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic diversity in tomato genotypes (Solanum lycopersicum) based on salinity responsive candidate gene using simple sequence repeats
Autorzy:
Ja'afar, U.
Aliero, A.A.
Shehu, K.
Abubakar, L.
Powiązania:
https://bibliotekanauki.pl/articles/11353.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Źródło:
International Letters of Natural Sciences; 2018, 72
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative study of bioethanol yield from yam, potato, watermelon, and pineapple peels using different concentrations of hydrochloric acid
Autorzy:
Ezejiofor, T. I. N.
Enenebeaku, U. E.
Enenebeaku, C. K.
Nwankwo, M. U.
Ogbonnaya, C. I. A.
Powiązania:
https://bibliotekanauki.pl/articles/1112886.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Bioethanol production
Waste recycling
potato peel
watermelon peel and pineapple peel
yam peel
Opis:
This study was aimed at determining the optimum yield of bioethanol (as biofuel and industrial chemical) from yam, potato, watermelon and pineapple peels using different concentrations of hydrochloric acid (HCl). Results obtained from acid hydrolysis, fermentation and distillation revealed that yam peel gave the highest quantity of glucose (38.7±0.90%) and ethanol (18.40±0.18%) at an acid concentration of 1.5M, watermelon peel equally recorded a highest yield of glucose (18.3±0.50%) and ethanol (8.35±0.14%) at 1.5M. For potato peel, the highest quantity of glucose (33.8±1.10%), and ethanol (18.23±0.04%) was at 2.0M, this concentration (2.0M) was equally the optimum for pineapple peel, the highest glucose concentration and ethanol yield of which was 24.5±0.62% and 11.44±0.29% respectively. Utilizing these agro-wastes for the production of bioethanol provides a means of recycling these biological wastes which are normally prone to rapid microbial spoilage.
Źródło:
World News of Natural Sciences; 2018, 16; 18-32
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of uni-univalent H+/K+ and uni-bivalent H+/Mg2+ ion exchange reactions using nuclear grade resin Indion-223
Autorzy:
Singare, P. U.
Mohammed, A. K. L.
Dixit, N. N.
Powiązania:
https://bibliotekanauki.pl/articles/411848.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
ion exchange equilibrium
nuclear grade resins
cation exchange
enthalpy change
equilibrium constant
Indion-223
Opis:
In the present paper the uni-univalent and uni-bivalent ion exchange reactions were investigated using nuclear grade anion exchange resin Indion-223 in H+ form. For both H+/K+ uni-univalet ion exchange reactions and H+/Mg2+ uni-bivalet ion exchange reactions, the equilibrium constant K values increases from 0.01710 to 0.02374 and from 0.000177 to 0.000333 respectively as the reaction temperature rises from 35.0 °C to 45.0 °C. The increase in K values with temperature suggest endothermic ion exchange reactions having the enthalpy change values of 22.72 and 51.46 kJ/ mol respectively. The results of such studies will help in selection of suitable ion exchange resins in order to bring about efficient separation of different ionic species present in the waste water effluents released from nuclear as well as chemical process industries.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 14, 2; 231-239
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of selected agricultural wastes as viable sources of vitamin supplements in poultry feeds
Autorzy:
Enenebeaku, C. K.
Enenebeaku, U. E.
Ezejiofor, T. I. N.
Powiązania:
https://bibliotekanauki.pl/articles/1109531.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
agricultural wastes
poultry feeds
vitamins
Opis:
The vitamin content of selected agricultural wastes was evaluated as supplements in poultry feeds. The agricultural wastes considered in this study include; cassava bagasse, beans coat, pineapple peel, avocado pear seed, watermelon peel, fluted pumpkin stalk, potato peel, Mix. A - mixture of all wastes (ratio, 1:1:1), Mix. B - mixture of bean jackets, avocado pear seed and potato peel (ratio, 1:1:1). The vitamins considered were Vitamin A, Vitamin D, Vitamin B12, Vitamin E, Vitamin K, Pantothenic acid, Niacin, Biotin and Pyridoxine. Cassava bagasse gave the highest amount of vitamin A (0.36±0.06 mg/l), whereas this vitamin was totally absent in fluted pumpkin stalk. This waste also gave the highest amount of vitamin E (0.99±0.21 mg/l). The highest amount of vitamin D (10.35±0.21 mg/l) was obtained from watermelon peel, while the highest amount of vitamin B12 (0.08±0.04 mg/l) was gleaned from a mixture of all the wastes (Mix. A). The wastes were quite low in vitamin K - herein, Mix. B (bean jackets, avocado pear seed, and potato peel) gave the highest amount (2.36±0.16 mg/l). Finally, pineapple peel gave the highest amount of pantothenic acid (8.55±0.35 mg/l), niacin (5.95±0.53 mg/l), biotin (0.08±0.03 mg/l), as well as pyridoxine (2.45±0.55 mg/l). These results were compared with the standards required for feed formulation for different categories of poultry birds. Our findings revealed that these agro-wastes contain vitamin levels that did not differ significantly from the standards required for feed formulation for different categories of poultry birds. Hence, they can serve as good supplements for vitamins in poultry feeds. Harnessing the vitamin contents of these wastes as supplements in poultry feed will increase animal production and ensure food security in terms of protein supply.
Źródło:
World News of Natural Sciences; 2018, 20; 103-120
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermodynamics of uni-univalent H+/K+ and uni-bivalent H+/Ca2+ ion exchange reactions using nuclear grade resin Indion-223
Autorzy:
Singare, P. U.
Mohammed, A. L. K.
Dixit, N. N.
Powiązania:
https://bibliotekanauki.pl/articles/412388.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
ion exchange
nuclear grade resins
cation exchangers
enthalpy change
standard equilibrium constant
Indion-223
Opis:
The present paper deals with the thermodynamic of uni-univalent and uni-bivalent ion exchange reactions using nuclear grade anion exchange resin Indion-223. It was observed that with rise in temperature the equilibrium constants K values for H+/K+ uni-univalet ion exchange reaction increases from 0.01710 to 0.02374. Similarly for H+/Ca2+ uni-bivalet ion exchange reaction the equilibrium constants K values increases from 0.000397 to 0.000639. The increase in K values with rise in temperature for both the reactions indicates its endothermic nature having the enthalpy change values of 22.72 and 38.92 kJ/ mol respectively. The technique used here can be extended further to standardise the process parameters in order to bring about the efficient separation of the desired ionic species from the solution.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 14, 2; 190-198
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nutritional analysis and wine production potentials of Telfairia occidentalis (fluted pumpkin) leaves and Cucumis sativus L. (cucumber) using Baker’s and palm wine yeast strains
Autorzy:
Ebana, R. U. B.
Edet, U. O.
Anosike, K. I.
Etok, C. A.
Kanu, T. O.
Powiązania:
https://bibliotekanauki.pl/articles/1077667.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Alcohol
Cucumis sativus
Nutrients
Palm wine yeast
Telfairia occidentalis
Tropical
Vegetables
Wine
Opis:
Telfairia occidentalis leaves and Cucumis sativus (cucumber) are vegetables that grow best in Tropical countries like Nigeria and have good nutritional properties but are highly perishable. Both vegetables were evaluated for wine production singly and in composite forms using palm wine and Baker’s yeast strains. In addition to wine production, the vegetables were screened for phytochemicals, anti-nutrients and nutrients (proximate composition, elements and vitamins) using standard methodologies. Proximate composition (g/100g dry matter) revealed that T. occidentalis leaves had moisture content, ash, protein, fat, fibre and carbohydrate contents of 86.60±0.10, 5.72±0.02, 4.30±0.10, 0.97±0.02, 6.30±0.10 and 82.45±0.02, respectively. In contrast, Cucumis sativus had a moisture content, ash, protein, fat, fibre and carbohydrate contents of 96.75±0.01, 5.40±0.02, 13.50±0.02, 10.30±0.10, and 66.12±0.01, respectively. Both plants contained various phytochemicals, including alkaloids, glycosides, saponins, tannins, flavonoids, reducing compounds and polyphenol, but not anthraquinones and phlabotanins. However, on quantification, reducing compounds and polyphenol recorded the highest concentrations. Vitamins A and C were detected in both samples. C. sativus had high amounts of K, P, and Mg and moderate amounts of Ca, Na, Cu, Fe and Mg. T. occidentalis leaves had moderate amounts of Ca, Zn, Fe, Mg, Ca and Na. Anti-nutrients levels were all below allowable regulatory limits for vegetables. Density, pH and alcohol values ranged from 0.20 - 0.99, 0.30- 4.6 and 1.95 - 9.94%, respectively. Sensory evaluation of the wine samples showed that wine produced from 70% fluted pumpkin and 30% cucumber had the best scores in terms of acceptability, taste, aroma and appearance. Given the findings in the study, wine production using tropical vegetables could double as a viable alternative to tropical fruits and also help to curb post-harvest losses commonly experienced in the tropics.
Źródło:
World News of Natural Sciences; 2019, 22; 12-30
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Detection and Prevalence of white spot syndrome disease (WSSV) in shrimp farms
Autorzy:
Amarakoon, A. A. D. Gayathri U.
Wijegoonawardane, P. K. M.
Wicraamasinghe, W. A. L.
Powiązania:
https://bibliotekanauki.pl/articles/1188101.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
WSSV
DNA genome
OIE
Penaeid shrimps
Nested PCR
Opis:
White spot syndrome is a viral infection of Penaeus monodon shrimp. It is highly lethal, contagious and killing shrimps and doesn’t have a specific anti-viral treatment for this infection. This important infection affects on shrimp farms in Sri Lanka and leads to the loss of economy. Most of shrimp products are export oriented. Therefore this study aimed to determine the factors, detection and prevalence of WSSV in shrimp farms, Sri Lanka. The prevalence rate of WSSV among the collected samples (n = 100) is 58.05% (2011), 59.06% (2012) in Sri Lanka respectively. Therefore the infection and resistance of virus has increased among the shrimp population annually. Further studies need to be identified the WSSV aggressive viral strains and prevention strategies to evade from this sever infection in shrimp farming.
Źródło:
World Scientific News; 2016, 56; 239-251
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł

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