Base de dados : MEDLINE
Pesquisa : B01.650.940.800.575.912.250.618.050.750.199 [Categoria DeCS]
Referências encontradas : 138 [refinar]
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  1 / 138 MEDLINE  
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[PMID]:28855015
[Au] Autor:Banerjee S; LaminKa-Ot A; Joshi SR; Mandal T; Halder G
[Ti] Título:Optimization of Fe Removal from Coal Mine Wastewater using Activated Biochar of .
[So] Source:Water Environ Res;89(9):774-782, 2017 Sep 01.
[Is] ISSN:1061-4303
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The present study investigates the sorptive removal of Fe2+ from simulated coal mine waste water using steam activated biochar (SABC) developed from the roots of Colocasia esculenta. The process was optimized by response surface methodology (RSM) under the influence of pH, temperature, adsorbent dosage and contact time at a constant shaking speed of 180 rpm with an initial concentration of 3 mg/L. The uptake performance of the biosorbent was assessed following a 24 full factorial experimental matrix developed by central composite design approach. Adsorbent was characterised by SEM, EDAX, XRD and B.E.T surface area analyzer. Maximum removal of 72.96% of Fe2+ was observed at pH 7.75, temperature 37.5 °C, adsorbent dosage 1.5 g/L for a time period of 180 mins. The study suggested that SABC prepared from roots of Colocasia esculenta could be used as an efficient and cost effective sorbent for removal of Fe2+ from coal mine wastewater.
[Mh] Termos MeSH primário: Carvão Vegetal/química
Colocasia/química
Ferro/química
Águas Residuais/química
Poluentes Químicos da Água/química
[Mh] Termos MeSH secundário: Adsorção
Minas de Carvão
Microscopia Eletrônica de Varredura
Modelos Teóricos
Reprodutibilidade dos Testes
Difração de Raios X
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Waste Water); 0 (Water Pollutants, Chemical); 0 (biochar); 16291-96-6 (Charcoal); E1UOL152H7 (Iron)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171103
[Lr] Data última revisão:
171103
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170901
[St] Status:MEDLINE
[do] DOI:10.2175/106143017X14902968254791


  2 / 138 MEDLINE  
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[PMID]:28384593
[Au] Autor:Makolomakwa M; Puri AK; Permaul K; Singh S
[Ad] Endereço:Department of Biotechnology and Food Technology, Faculty of Applied Sciences, Durban University of Technology, Durban 4000, South Africa.
[Ti] Título:Thermo-acid-stable phytase-mediated enhancement of bioethanol production using Colocasia esculenta.
[So] Source:Bioresour Technol;235:396-404, 2017 Jul.
[Is] ISSN:1873-2976
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Phytase production by the thermophilic mould Thermomyces lanuginosus SSBP was enhanced 8.56-fold in submerged fermentation, which was further improved in fed-batch cultivations. The protein was purified to homogeneity using ammonium sulphate precipitation, Resource Q anion exchange and Superdex gel-filtration chromatography, with an overall purification of 24.7-fold and a yield of 5.16%. The purified 49kDa protein was optimally active at 55°C and pH 5.0, and was stable between 50 and 90°C from pH 3.0-6.0, with a half-life of 138.6min at 70°C. It was moderately stimulated by Ba and Mg . The enzyme reduced phytate content in Colocasia esculenta starch (from 1.43mg/g to 0.05mg/g) that resulted in an improvement in the availability of fermentable sugars with a concomitant reduction in viscosity and 1.59-fold improvement in ethanol production. Thermo-acid-stable phytase from T. lanuginosus SSBP could be of major biotechnological interest, especially due to its robustness and wide applicability.
[Mh] Termos MeSH primário: 6-Fitase/biossíntese
Colocasia
Etanol/metabolismo
[Mh] Termos MeSH secundário: Fermentação
Meia-Vida
Concentração de Íons de Hidrogênio
Ácido Fítico
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
3K9958V90M (Ethanol); 7IGF0S7R8I (Phytic Acid); EC 3.1.3.26 (6-Phytase)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170601
[Lr] Data última revisão:
170601
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170407
[St] Status:MEDLINE


  3 / 138 MEDLINE  
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[PMID]:27525909
[Au] Autor:Dai HJ; Zhang YM; Sun XQ; Xue JY; Li MM; Cao MX; Shen XL; Hang YY
[Ad] Endereço:Seed Administrative Station of Suzhou, Suzhou, China.
[Ti] Título:Two-step identification of taro (Colocasia esculenta cv. Xinmaoyu) using specific psbE-petL and simple sequence repeat-sequence characterized amplified regions (SSR-SCAR) markers.
[So] Source:Genet Mol Res;15(3), 2016 Aug 05.
[Is] ISSN:1676-5680
[Cp] País de publicação:Brazil
[La] Idioma:eng
[Ab] Resumo:Colocasia esculenta cv. Xinmaoyu is an eddoe-type taro cultivar local to Taicang, Jiangsu Province, China; it is characterized by its pure flavor, glutinous texture, and high nutritional value. Due to its excellent qualities, the Trademark Office of the State Administration for Industry and Commerce of the People's Republic of China awarded Xinmaoyu, a geographical indication certification in 2014. Therefore, there is an urgent need to develop an efficient molecular marker for the specific identification of this cultivar, which would greatly facilitate the conservation and utilization of this unique germplasm resource. In the present study, amplifying the psbE-petL fragment from two dasheen-type and seven eddoe-type taro cultivars revealed three conserved insertions/deletions among sequences from the two taro types. Based on these sequence differences, a pair of site-specific primers was designed targeting the psbE-petL sequence from the dasheen-type taro, which specifically amplified a DNA band in all individuals from cultivars of this type, but not in those from the seven eddoe-type cultivars. To discriminate Xinmaoyu from the other eddoe-type taro cultivars, a pair of simple sequence repeat-sequence characterized amplified region (SSR-SCAR) primers was further developed to specifically amplify a DNA band from all Xinmaoyu individuals, but not from individuals of other eddoe-type taro cultivars. In conclusion, through a two-step-screening procedure using psbE-petL and SSR-SCAR markers, we developed a pair of primers that could specifically discriminate Xinmaoyu from nine taro cultivars commonly cultivated in Jiangsu Province and Fujian Province.
[Mh] Termos MeSH primário: Colocasia/genética
Marcadores Genéticos
Repetições de Microssatélites
[Mh] Termos MeSH secundário: Colocasia/classificação
Seres Humanos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Genetic Markers)
[Em] Mês de entrada:1703
[Cu] Atualização por classe:170316
[Lr] Data última revisão:
170316
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160816
[St] Status:MEDLINE
[do] DOI:10.4238/gmr.15038108


  4 / 138 MEDLINE  
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[PMID]:27423413
[Au] Autor:Deka D; Sit N
[Ad] Endereço:Department of Food Engineering and Technology, Tezpur University, Tezpur, Assam-784028, India.
[Ti] Título:Dual modification of taro starch by microwave and other heat moisture treatments.
[So] Source:Int J Biol Macromol;92:416-422, 2016 Nov.
[Is] ISSN:1879-0003
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Effect of heat moisture treatment on the physicochemical properties of taro starch with 25% moisture (w/w) modified by single treatments of microwave (HMT1), autoclave (HMT2) and hot air oven (HMT3), and dual treatments of microwave followed by autoclave (HMT4) and microwave followed by hot air oven (HMT5) were investigated. Amylose contents of the modified starches increased except for HMT3. A loss of physical integrity of the starch granules were observed for dual modified starches. The swelling and solubility of all the modified starches increased. The peak viscosities of starches modified by HMT1 and HMT5 were found to be higher whereas for other modified starches it was lower than that of native starch. The holding and final viscosities of all the modified starches except HMT4 were higher than native starch. The freeze-thaw stabilities of the modified starches were also found to be better than that of native starch.
[Mh] Termos MeSH primário: Colocasia/química
Temperatura Alta
Umidade
Micro-Ondas
Amido/química
[Mh] Termos MeSH secundário: Amilose/química
Cor
Cristalização
Congelamento
Pós
Solubilidade
Amido/ultraestrutura
Difração de Raios X
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Powders); 9005-25-8 (Starch); 9005-82-7 (Amylose)
[Em] Mês de entrada:1703
[Cu] Atualização por classe:170313
[Lr] Data última revisão:
170313
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160718
[St] Status:MEDLINE


  5 / 138 MEDLINE  
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[PMID]:27314588
[Au] Autor:Chaïr H; Traore RE; Duval MF; Rivallan R; Mukherjee A; Aboagye LM; Van Rensburg WJ; Andrianavalona V; Pinheiro de Carvalho MA; Saborio F; Sri Prana M; Komolong B; Lawac F; Lebot V
[Ad] Endereço:CIRAD, UMR AGAP, Montpellier, France.
[Ti] Título:Genetic Diversification and Dispersal of Taro (Colocasia esculenta (L.) Schott).
[So] Source:PLoS One;11(6):e0157712, 2016.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Taro (Colocasia esculenta (L.) Schott) is widely distributed in tropical and sub-tropical areas. However, its origin, diversification and dispersal remain unclear. While taro genetic diversity has been documented at the country and regional levels in Asia and the Pacific, few reports are available from Americas and Africa where it has been introduced through human migrations. We used eleven microsatellite markers to investigate the diversity and diversification of taro accessions from nineteen countries in Asia, the Pacific, Africa and America. The highest genetic diversity and number of private alleles were observed in Asian accessions, mainly from India. While taro has been diversified in Asia and the Pacific mostly via sexual reproduction, clonal reproduction with mutation appeared predominant in African and American countries investigated. Bayesian clustering revealed a first genetic group of diploids from the Asia-Pacific region and to a second diploid-triploid group mainly from India. Admixed cultivars between the two genetic pools were also found. In West Africa, most cultivars were found to have originated from India. Only one multi-locus lineage was assigned to the Asian pool, while cultivars in Madagascar originated from India and Indonesia. The South African cultivars shared lineages with Japan. The Caribbean Islands cultivars were found to have originated from the Pacific, while in Costa Rica they were from India or admixed between Indian and Asian groups. Taro dispersal in the different areas of Africa and America is thus discussed in the light of available records of voyages and settlements.
[Mh] Termos MeSH primário: Colocasia/genética
Variação Genética
Repetições de Microssatélites/genética
[Mh] Termos MeSH secundário: África
Alelos
Américas
Ásia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170713
[Lr] Data última revisão:
170713
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160618
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0157712


  6 / 138 MEDLINE  
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[PMID]:27262515
[Au] Autor:Vajravijayan S; Pletnev S; Pletnev VZ; Nandhagopal N; Gunasekaran K
[Ad] Endereço:Centre of Advanced Study in Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai 600 025, India.
[Ti] Título:Structural analysis of ß-prism lectin from Colocasia esculenta (L.) S chott.
[So] Source:Int J Biol Macromol;91:518-23, 2016 Oct.
[Is] ISSN:1879-0003
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The Mannose-binding ß-Prism Colocasia esculenta lectin (ß-PCL) was purified from tubers using ion exchange chromatography. The purified ß-PCL appeared as a single band of ∼12kDa on SDS-PAGE. ß-PCL crystallizes in trigonal space group P3121 and diffracted to a resolution of 2.1Å. The structure was solved using Molecular replacement using Crocus vernus lectin (PDB: 3MEZ) as a model. From the final refined model to an R-factor of 16.5% and an Rfree of 20.4%, it has been observed that the biological unit consists of two ß-Prism domains augmented through C-terminals swap over to form one of faces for each domain. Cα superposition of individual domains of ß-PCL with individual domains of other related structures and superposition of whole protein structures were carried out. The higher RMS deviation for the superposition of whole structures suggest that ß-prism domains assume different orientation in each structure.
[Mh] Termos MeSH primário: Colocasia/química
Lectina de Ligação a Manose/química
Lectinas de Plantas/química
[Mh] Termos MeSH secundário: Cristalografia por Raios X
Estrutura Secundária de Proteína
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Mannose-Binding Lectin); 0 (Plant Lectins)
[Em] Mês de entrada:1703
[Cu] Atualização por classe:170302
[Lr] Data última revisão:
170302
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160606
[St] Status:MEDLINE


  7 / 138 MEDLINE  
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[PMID]:26918568
[Au] Autor:Jiang S; Dai L; Qin Y; Xiong L; Sun Q
[Ad] Endereço:School of Food Science and Engineering, Qingdao Agricultural University, Shandong, China.
[Ti] Título:Preparation and Characterization of Octenyl Succinic Anhydride Modified Taro Starch Nanoparticles.
[So] Source:PLoS One;11(2):e0150043, 2016.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The polar surface and hydrophilicity of starch nanoparticles (SNPs) result in their poor dispersibility in nonpolar solvent and poor compatibility with hydrophobic polymers, which limited the application in hydrophobic system. To improve their hydrophobicity, SNPs prepared through self-assembly of short chain amylose debranched from cooked taro starch, were modified by octenyl succinic anhydride (OSA). Size via dynamic light scattering of OSA-SNPs increased compared with SNPs. Fourier transform infrared spectroscopy data indicated the OSA-SNPs had a new absorption peak at 1727 cm-1, which was the characteristic peak of carbonyl, indicating the formation of the ester bond. The dispersibility of the modified SNPs in the mixture of water with nonpolar solvent increased with increasing of degree of substitution (DS). OSA-SNPs appear to be a potential agent to stabilize the oil-water systems.
[Mh] Termos MeSH primário: Colocasia
Nanopartículas/química
Amido/análogos & derivados
[Mh] Termos MeSH secundário: Interações Hidrofóbicas e Hidrofílicas
Espectroscopia de Infravermelho com Transformada de Fourier
Amido/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (octenyl succinic anhydride-modified starch); 9005-25-8 (Starch)
[Em] Mês de entrada:1607
[Cu] Atualização por classe:160310
[Lr] Data última revisão:
160310
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160227
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0150043


  8 / 138 MEDLINE  
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[PMID]:26876854
[Au] Autor:Hazarika BJ; Sit N
[Ad] Endereço:Department of Food Engineering and Technology, Tezpur University, Tezpur 784028, Assam, India.
[Ti] Título:Effect of dual modification with hydroxypropylation and cross-linking on physicochemical properties of taro starch.
[So] Source:Carbohydr Polym;140:269-78, 2016 Apr 20.
[Is] ISSN:1879-1344
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Dual modification of taro starch by hydroxypropylation and cross-linking was carried out and the properties of the modified starches were investigated. Two different levels of hydroxypropylation (5 and 10%) and cross-linking (0.05 and 0.10%) were used in different sequences. The amylose contents of the starch decreased due to single and dual modification. For the dual-modified starches, the swelling, solubility and clarity was found to increase with level of hydroxypropylation and decrease with level of cross-linking. The freeze-thaw stability of the dual-modified starches was also affected by the sequence of modification. The viscosities of the cross-linked and dual-modified starches were more than native and hydroxypropylated starches. The firmness of the dual-modified starches was also higher than native and single modified starches. The dual-modified starches have benefits of both type of modifications and could be used for specific purposes e.g. food products requiring high viscosity as well as freeze-thaw stability.
[Mh] Termos MeSH primário: Fenômenos Químicos
Colocasia/química
Amido/química
[Mh] Termos MeSH secundário: Amilose/análise
Cor
Estabilidade de Medicamentos
Congelamento
Solubilidade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
9005-25-8 (Starch); 9005-82-7 (Amylose)
[Em] Mês de entrada:1612
[Cu] Atualização por classe:161230
[Lr] Data última revisão:
161230
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160216
[St] Status:MEDLINE


  9 / 138 MEDLINE  
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[PMID]:26853060
[Au] Autor:Nakkeeran E; Saranya N; Giri Nandagopal MS; Santhiagu A; Selvaraju N
[Ad] Endereço:a Department of Chemical Engineering , National Institute of Technology Calicut , Kozhikode , Kerala , India.
[Ti] Título:Hexavalent chromium removal from aqueous solutions by a novel powder prepared from Colocasia esculenta leaves.
[So] Source:Int J Phytoremediation;18(8):812-21, 2016 Aug 02.
[Is] ISSN:1549-7879
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:In this study, batch removal of hexavalent chromium from aqueous solutions by powdered Colocasia esculenta leaves was investigated. Batch experiments were conducted to study the effects of adsorption of Cr(VI) at different pH values, initial concentrations, agitation speeds, temperatures, and contact times. The biosorbent was characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, and Fourier transform infrared spectrometer analysis. The biosorptive capacity of the adsorbent was dependent on the pH of the chromium solution in which maximum removal was observed at pH 2. The adsorption equilibrium data were evaluated for various adsorption isotherm models, kinetic models, and thermodynamics. The equilibrium data fitted well with Freundlich and Halsey models. The adsorption capacity calculated was 47.62 mg/g at pH 2. The adsorption kinetic data were best described by pseudo-second-order kinetic model. Thus, Colocasia esculenta leaves can be considered as one of the efficient and cheap biosorbents for hexavalent chromium removal from aqueous solutions.
[Mh] Termos MeSH primário: Carcinógenos Ambientais/isolamento & purificação
Cromo/isolamento & purificação
Colocasia
Purificação da Água/métodos
[Mh] Termos MeSH secundário: Absorção Fisico-Química
Folhas de Planta
Pós
Soluções
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Carcinogens, Environmental); 0 (Powders); 0 (Solutions); 0R0008Q3JB (Chromium); 18540-29-9 (chromium hexavalent ion)
[Em] Mês de entrada:1703
[Cu] Atualização por classe:170314
[Lr] Data última revisão:
170314
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160209
[St] Status:MEDLINE
[do] DOI:10.1080/15226514.2016.1146229


  10 / 138 MEDLINE  
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[PMID]:26837840
[Au] Autor:Rajashekar Y; Tonsing N; Shantibala T; Manjunath JR
[Ad] Endereço:Animal Resources Programme, Institute of Bioresources and Sustainable Development, Department of Biotechnology, Govt. of India, Takyelpat, Imphal-795001, Manipur, India.
[Ti] Título:2, 3-Dimethylmaleic anhydride (3, 4-Dimethyl-2, 5-furandione): A plant derived insecticidal molecule from Colocasia esculenta var. esculenta (L.) Schott.
[So] Source:Sci Rep;6:20546, 2016 Feb 03.
[Is] ISSN:2045-2322
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The phasing out of methyl bromide as a fumigant, resistance problems with phosphine and other fumigants in stored product beetles, and serious concern with human health and environmental safety have triggered the search for alternative biofumigants of plant origin. Despite the identification of a large number of plants that show insecticidal activity, and the diversity of natural products with inherent eco-friendly nature, newer biofumigants of plant origin have eluded discovery. Using a bioassay driven protocol, we have now isolated a bioactive molecule from the root stock of Colocasia esculenta (L.) and characterized it as 2, 3-dimethylmaleic anhydride (3, 4-dimethyl-2, 5-furandione) based on various physico-chemical and spectroscopic techniques (IR, (1)H NMR, (13)C NMR and Mass). The molecule proved to be an efficient biofumigant which is highly toxic to insect pests for stored grains even at very low concentration, but has no adverse effect on seed germination. We finally address the potential for this molecule to become a, effective biofumigant.
[Mh] Termos MeSH primário: Anidridos/química
Colocasia/química
Furanos/química
Praguicidas/química
[Mh] Termos MeSH secundário: Anidridos/farmacologia
Animais
Coleópteros/efeitos dos fármacos
Furanos/farmacologia
Germinação/efeitos dos fármacos
Estrutura Molecular
Praguicidas/farmacologia
Extratos Vegetais/química
Extratos Vegetais/farmacologia
Raízes de Plantas/química
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Anhydrides); 0 (Furans); 0 (Pesticides); 0 (Plant Extracts)
[Em] Mês de entrada:1701
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160204
[St] Status:MEDLINE
[do] DOI:10.1038/srep20546



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