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  1 / 4458 MEDLINE  
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[PMID]:28278779
[Au] Autor:Lominchar MA; Rodríguez S; Lorenzo D; Santos N; Romero A; Santos A
[Ad] Endereço:a Dpto. Ingeniería Química, Facultad CC, Químicas , Universidad Complutense de Madrid , Madrid , Spain.
[Ti] Título:Phenol abatement using persulfate activated by nZVI, H O and NaOH and development of a kinetic model for alkaline activation.
[So] Source:Environ Technol;39(1):35-43, 2018 Jan.
[Is] ISSN:0959-3330
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Three persulfate (PS) activation methods (nanoparticles of zero-valent iron (nZVI), hydrogen peroxide and alkali) were compared using phenol as target pollutant. Firstly, four experiments were conducted at 25°C in a batch way using the same initial phenol and oxidant concentrations (10 mM and 420 mM, respectively), being the molar ratio activator/PS fixed to 0.005 with nZVI (mass ratio 0.0011 nZVI/PS), to 2 using hydrogen peroxide and to 2 and 4 with NaOH. Phenol and PS conversions and aromatic byproducts profiles during 168 h reaction time were measured and compared, as well as mineralization and ecotoxicity of the samples. It was found that both phenol and aromatic byproducts (catechol and hydroquinone) totally disappeared using PS activated by alkali before 24 h, while a significant amount of aromatic intermediates was obtained with nZVI and H O . Additional runs were carried out using shorter times (0-2 h) to discriminate the oxidation route and the kinetic model of phenol abatement by using PS activated by alkali. Different initial concentrations of phenol (5-15 mM), PS (210 and 420 mM) and molar ratio NaOH/PS (2 and 4) were employed. The kinetic model obtained predicts accurately the evolution of phenol, persulfate, hydroquinone and catechol.
[Mh] Termos MeSH primário: Modelos Químicos
Nanopartículas/química
Fenol/química
Hidróxido de Sódio/química
Sulfatos/química
Poluentes Químicos da Água/química
[Mh] Termos MeSH secundário: Peróxido de Hidrogênio
Ferro
Cinética
Oxirredução
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Sulfates); 0 (Water Pollutants, Chemical); 339NCG44TV (Phenol); 55X04QC32I (Sodium Hydroxide); BBX060AN9V (Hydrogen Peroxide); E1UOL152H7 (Iron)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170311
[St] Status:MEDLINE
[do] DOI:10.1080/09593330.2017.1294203


  2 / 4458 MEDLINE  
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[PMID]:29478652
[Au] Autor:Liu M; Preis S; Kornev I; Hu Y; Wei CH
[Ad] Endereço:School of Environment and Energy, South China University of Technology, Guangzhou 510006, China; Guangdong Provincial Engineering and Technology Research Centre for Environmental Risk Prevention and Emergency Disposal, Guangzhou 510006, China. Electronic address: 907306129@qq.com.
[Ti] Título:Pulsed corona discharge for improving treatability of coking wastewater.
[So] Source:J Environ Sci (China);64:306-316, 2018 Feb.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Coking wastewater (CW) contains toxic and macromolecular substances that inhibit biological treatment. The refractory compounds remaining in biologically treated coking wastewater (BTCW) provide chemical oxygen demand (COD) and color levels that make it unacceptable for reuse or disposal. Gas-phase pulsed corona discharge (PCD) utilizing mostly hydroxyl radicals and ozone as oxidants was applied to both raw coking wastewater (RCW) and BTCW wastewater as a supplemental treatment. The energy efficiency of COD, phenol, thiocyanate and cyanide degradation by PCD was the subject of the research. The cost-effective removal of intermediate oxidation products with addition of lime was also studied. The energy efficiency of oxidation was inversely proportional to the pulse repetition frequency: lower frequency allows more effective utilization of ozone at longer treatment times. Oxidative treatment of RCW showed the removal of phenol and thiocyanate at 800 pulses per second from 611 to 227mg/L and from 348 to 86mg/L, respectively, at 42kWh/m delivered energy, with substantial improvement in the BOD /COD ratio (from 0.14 to 0.43). The COD and color of BTCW were removed by 30% and 93%, respectively, at 20kWh/m , showing energy efficiency for the PCD treatment exceeding that of conventional ozonation by a factor of 3-4. Application of lime appeared to be an effective supplement to the PCD treatment of RCW, degrading COD by about 28% at an energy input of 28kWh/m and the lime dose of 3.0kg/m . The improvement of RCW treatability is attributed to the degradation of toxic substances and fragmentation of macromolecular compounds.
[Mh] Termos MeSH primário: Coque/análise
Resíduos Industriais/análise
Eliminação de Resíduos Líquidos/métodos
Águas Residuais/química
[Mh] Termos MeSH secundário: Análise da Demanda Biológica de Oxigênio
Compostos de Cálcio/química
Radical Hidroxila/química
Oxirredução
Óxidos/química
Ozônio/química
Fenol/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Calcium Compounds); 0 (Coke); 0 (Industrial Waste); 0 (Oxides); 0 (Waste Water); 3352-57-6 (Hydroxyl Radical); 339NCG44TV (Phenol); 66H7ZZK23N (Ozone); C7X2M0VVNH (lime)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180301
[Lr] Data última revisão:
180301
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180227
[St] Status:MEDLINE


  3 / 4458 MEDLINE  
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[PMID]:29253823
[Au] Autor:Wu C; Zhou Y; Zhang S; Xu M; Song J
[Ad] Endereço:State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Research Center of Water Pollution Control Technology, Chinese Research Academy of Environment Sciences, Beijing 100012, China. Electronic address: changyong
[Ti] Título:The effect of toxic carbon source on the reaction of activated sludge in the batch reactor.
[So] Source:Chemosphere;194:784-792, 2018 Mar.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The toxic carbon source can cause higher residual effluent dissolved organic carbon than easily biodegraded carbon source in activated sludge process. In this study, an integrated activated sludge model is developed as the tool to understand the mechanism of toxic carbon source (phenol) on the reaction, regarding the carbon flows during the aeration period in the batch reactor. To estimate the toxic function of phenol, the microbial cells death rate (k ) is introduced into the model. The integrated model was calibrated and validated by the experimental data and it was found the model simulations matched the all experimental measurements. In the steady state, the toxicity of phenol can result in higher microbial cells death rate (0.1637 h vs 0.0028 h ) and decay rate coefficient of biomass (0.0115 h vs 0.0107 h ) than acetate. In addition, the utilization-associated products (UAP) and extracellular polymeric substances (EPS) formation coefficients of phenol are higher than that of acetate, indicating that more carbon flows into the extracellular components, such as soluble microbial products (SMP), when degrading toxic organics. In the non-steady state of feeding phenol, the yield coefficient for growth and maximum specific growth rate are very low in the first few days (1-10 d), while the decay rate coefficient of biomass and microbial cells death rate are relatively high. The model provides insights into the difference of the dynamic reaction with different carbon sources in the batch reactor.
[Mh] Termos MeSH primário: Carbono/toxicidade
Esgotos/química
[Mh] Termos MeSH secundário: Ácido Acético/metabolismo
Ácido Acético/toxicidade
Bactérias/citologia
Bactérias/efeitos dos fármacos
Bactérias/crescimento & desenvolvimento
Biodegradação Ambiental
Biomassa
Reatores Biológicos/microbiologia
Carbono/metabolismo
Modelos Teóricos
Fenol/metabolismo
Fenol/toxicidade
Esgotos/microbiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Sewage); 339NCG44TV (Phenol); 7440-44-0 (Carbon); Q40Q9N063P (Acetic Acid)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180228
[Lr] Data última revisão:
180228
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171219
[St] Status:MEDLINE


  4 / 4458 MEDLINE  
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ALVARENGA, Elson Santiago
Texto completo
[PMID]:29286652
[Au] Autor:Pinheiro PF; Menini LAP; Bernardes PC; Saraiva SH; Carneiro JWM; Costa AV; Arruda TR; Lage MR; Gonçalves PM; Bernardes CO; Alvarenga ES; Menini L
[Ti] Título:Semisynthetic Phenol Derivatives Obtained from Natural Phenols: Antimicrobial Activity and Molecular Properties.
[So] Source:J Agric Food Chem;66(1):323-330, 2018 Jan 10.
[Is] ISSN:1520-5118
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Semisynthetic phenol derivatives were obtained from the natural phenols: thymol, carvacrol, eugenol, and guaiacol through catalytic oxychlorination, Williamson synthesis, and aromatic Claisen rearrangement. The compounds characterization was carried out by H NMR, C NMR, and mass spectrometry. The natural phenols and their semisynthetic derivatives were tested for their antimicrobial activity against the bacteria: Staphylococcus aureus, Escherichia coli, Listeria innocua, Pseudomonas aeruginosa, Salmonella enterica Typhimurium, Salmonella enterica ssp. enterica, and Bacillus cereus. Minimum inhibitory concentration (MIC) and minimal bactericidal concentration (MBC) values were determined using concentrations from 220 to 3.44 µg mL . Most of the tested compounds presented MIC values ≤220 µg mL for all the bacteria used in the assays. The molecular properties of the compounds were computed with the PM6 method. Through principle components analysis, the natural phenols and their semisynthetic derivatives with higher antimicrobial potential were grouped.
[Mh] Termos MeSH primário: Antibacterianos/síntese química
Antibacterianos/farmacologia
Fenol/farmacologia
[Mh] Termos MeSH secundário: Antibacterianos/química
Escherichia coli/efeitos dos fármacos
Eugenol/química
Eugenol/farmacologia
Listeria/efeitos dos fármacos
Testes de Sensibilidade Microbiana
Monoterpenos/química
Monoterpenos/farmacologia
Fenol/síntese química
Fenol/química
Salmonella typhimurium/efeitos dos fármacos
Staphylococcus aureus/efeitos dos fármacos
Timol/química
Timol/farmacologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anti-Bacterial Agents); 0 (Monoterpenes); 339NCG44TV (Phenol); 3J50XA376E (Thymol); 3T8H1794QW (Eugenol); 9B1J4V995Q (carvacrol)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180205
[Lr] Data última revisão:
180205
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171230
[St] Status:MEDLINE
[do] DOI:10.1021/acs.jafc.7b04418


  5 / 4458 MEDLINE  
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[PMID]:28745361
[Au] Autor:Guardado Yordi E; Matos MJ; Pérez Martínez A; Tornes AC; Santana L; Molina E; Uriarte E
[Ad] Endereço:Universidad de Camagüey Ignacio Agramonte Loynaz, Facultad de Ciencias Aplicadas, Cincunvalación Norte Km 5 1/2, Camagüey, Cuba. estela.guardado@reduc.edu.cu and Universidad de Santiago de Compostela, Facultad de Farmacia, Campus vida, 15782 Santiago de Compostela, Spain.
[Ti] Título:In silico genotoxicity of coumarins: application of the Phenol-Explorer food database to functional food science.
[So] Source:Food Funct;8(8):2958-2966, 2017 Aug 01.
[Is] ISSN:2042-650X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Coumarins are a group of phytochemicals that may be beneficial or harmful to health depending on their type and dosage and the matrix that contains them. Some of these compounds have been proven to display pro-oxidant and clastogenic activities. Therefore, in the current work, we have studied the coumarins that are present in food sources extracted from the Phenol-Explorer database in order to predict their clastogenic activity and identify the structure-activity relationships and genotoxic structural alerts using alternative methods in the field of computational toxicology. It was necessary to compile information on the type and amount of coumarins in different food sources through the analysis of databases of food composition available online. A virtual screening using a clastogenic model and different software, such as MODESLAB, ChemDraw and STATISTIC, was performed. As a result, a table of food composition was prepared and qualitative information from this data was extracted. The virtual screening showed that the esterified substituents inactivate molecules, while the methoxyl and hydroxyl substituents contribute to their activity and constitute, together with the basic structures of the studied subclasses, clastogenic structural alerts. Chemical subclasses of simple coumarins and furocoumarins were classified as active (xanthotoxin, isopimpinellin, esculin, scopoletin, scopolin and bergapten). In silico genotoxicity was mainly predicted for coumarins found in beer, sherry, dried parsley, fresh parsley and raw celery stalks. The results obtained can be interesting for the future design of functional foods and dietary supplements. These studies constitute a reference for the genotoxic chemoinformatic analysis of bioactive compounds present in databases of food composition.
[Mh] Termos MeSH primário: Cumarínicos/toxicidade
Alimento Funcional/análise
[Mh] Termos MeSH secundário: Simulação por Computador
Cumarínicos/química
Bases de Dados Factuais
Tecnologia de Alimentos
Fenol/análise
Relação Estrutura-Atividade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Coumarins); 339NCG44TV (Phenol)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171215
[Lr] Data última revisão:
171215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170727
[St] Status:MEDLINE
[do] DOI:10.1039/c7fo00402h


  6 / 4458 MEDLINE  
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[PMID]:28873463
[Au] Autor:Ortega A; Garrido I; Casimiro I; Espinosa F
[Ad] Endereço:FBCMP Research Group, University of Extremadura, Campus Avenida Elvas, Badajoz, Spain.
[Ti] Título:Effects of antimony on redox activities and antioxidant defence systems in sunflower (Helianthus annuus L.) plants.
[So] Source:PLoS One;12(9):e0183991, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The alterations induced by the toxicity of antimony (Sb) in the roots and leaves of sunflower plants were determined. The plants were grown hydroponically with different concentrations of Sb, a heavy metal which reduces biomass production and growth. There was preferential accumulation of Sb in the tissues of the roots, with the concentrations in the leaves being much lower. The accumulation of other mineral elements was also altered, especially that of Fe and Zn. Chlorophyll content declined, as also did the photosynthetic efficiency, but the carotenoid content remained unaltered. The total content of phenolics, flavonoids, and phenylpropanoid glycosides rose, evidence of their participation in the defence response. Increases were observed in the amount of superoxide anion in both roots and leaves, and in lipid peroxidation levels, especially with the highest Sb concentration of 1.0 mM. The induced oxidative stress leads to a strong increase in the SOD, POX and APX antioxidant activities, while the GR activity was only increased in the leaves and at the 1.0 mM Sb concentration. In contrast, the DHAR activity increased considerably in both organs. The GSNOR activity increased only in roots, and the total RSNOs increased. The total amount of AsA + DHA increased in roots and remained unaltered in leaves, whereas that of GSH + GSSG decreased considerably in all cases. As a whole, these results are evidence for the development of a strong oxidative stress induced by Sb, with there being a clear imbalance in the content of the compounds that constitute the AsA/GSH cycle. 0.5 mM Sb enhances GST expression, especially in leaves. This, together with the increase that was observed in the amount of GSH, may play an important part in detoxification. This oxidative stress affects both the phenolic and the ROS/RNS metabolic processes, which seems to implicate their involvement in the plant's defence and response to the stress.
[Mh] Termos MeSH primário: Antimônio/química
Antioxidantes/química
Helianthus/enzimologia
Oxirredução
[Mh] Termos MeSH secundário: Ácido Ascórbico/química
Biomassa
Carotenoides/química
Clorofila/química
Glutationa/metabolismo
Helianthus/efeitos dos fármacos
Peróxido de Hidrogênio/farmacologia
Peroxidação de Lipídeos/efeitos dos fármacos
Malondialdeído/metabolismo
Oxidantes/química
Estresse Oxidativo/efeitos dos fármacos
Oxigênio/química
Fenol/química
Fotossíntese
Folhas de Planta/metabolismo
Raízes de Plantas/metabolismo
RNA Mensageiro/metabolismo
Espécies Reativas de Oxigênio/metabolismo
Plântulas/metabolismo
Sementes/metabolismo
Superóxido Dismutase/metabolismo
Superóxidos/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antioxidants); 0 (Oxidants); 0 (RNA, Messenger); 0 (Reactive Oxygen Species); 11062-77-4 (Superoxides); 1406-65-1 (Chlorophyll); 339NCG44TV (Phenol); 36-88-4 (Carotenoids); 4Y8F71G49Q (Malondialdehyde); 9IT35J3UV3 (Antimony); BBX060AN9V (Hydrogen Peroxide); EC 1.15.1.1 (Superoxide Dismutase); GAN16C9B8O (Glutathione); PQ6CK8PD0R (Ascorbic Acid); S88TT14065 (Oxygen)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171025
[Lr] Data última revisão:
171025
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170906
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0183991


  7 / 4458 MEDLINE  
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[PMID]:28869125
[Au] Autor:Ren LF; Chen R; Zhang X; Shao J; He Y
[Ad] Endereço:School of Environmental Science and Engineering, Shanghai Jiaotong University, No. 800 Dongchuan Road, Shanghai 200240, Shanghai, PR China.
[Ti] Título:Phenol biodegradation and microbial community dynamics in extractive membrane bioreactor (EMBR) for phenol-laden saline wastewater.
[So] Source:Bioresour Technol;244(Pt 1):1121-1128, 2017 Nov.
[Is] ISSN:1873-2976
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:An extractive membrane bioreactor (EMBR) for phenol-laden saline wastewater was set up in this study to investigate the variations of phenol removal, extracellular polymeric substance (EPS) release and microbial community dynamics. The gradual release of phenol and the total separation of salt were achieved by silicon rubber tube membrane. Only phenol (55.6-273.9mg/L) was extracted into microorganism unit from wastewaters containing 1.0-5.0g/L phenol and 35.0g/L NaCl. After 82d of EMBR operation, maximal 273.9mg/L of phenol was removed in EMBR. Low concentration of phenol in wastewater (2.5g/L) played a favorable effect on the microbial community structure, community and dynamics. The enumeration of Proteobacteria (30,499 sequences) significantly increased with more released EPS (82.82mg/gSS) to absorb and degrade phenol, compared to the virgin data without phenol addition. However, high concentration of phenol showed adverse effects on EPS release, microbial abundance and biodiversity.
[Mh] Termos MeSH primário: Reatores Biológicos
Fenol
Águas Residuais
[Mh] Termos MeSH secundário: Fenóis
Purificação da Água
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Phenols); 0 (Waste Water); 339NCG44TV (Phenol)
[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:170905
[St] Status:MEDLINE


  8 / 4458 MEDLINE  
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[PMID]:28810208
[Au] Autor:Yadav M; Yadav A; Fernandes R; Popat Y; Orlandi M; Dashora A; Kothari DC; Miotello A; Ahuja BL; Patel N
[Ad] Endereço:Department of Physics and National Centre for Nanosciences & Nanotechnology, University of Mumbai, Vidyanagari, Santacruz (E), Mumbai, 400098, India.
[Ti] Título:Tungsten-doped TiO /reduced Graphene Oxide nano-composite photocatalyst for degradation of phenol: A system to reduce surface and bulk electron-hole recombination.
[So] Source:J Environ Manage;203(Pt 1):364-374, 2017 Dec 01.
[Is] ISSN:1095-8630
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Recombination of photogenerated charges is the main factor affecting the photocatalytic activity of TiO . Here, we report a combined strategy of suppressing both the bulk as well as the surface recombination processes by doping TiO with tungsten and forming a nanocomposite with reduced graphene oxide (rGO), respectively. Sol-gel method was used to dope and optimize the concentration of W in TiO powder. UV-Vis, XPS, PL and time resolved PL spectra along with DFT calculations indicate that W in TiO lattice creates an impurity level just below the conduction band of TiO to act as a trapping site of electrons, which causes to improve the lifetime of the photo-generated charges. Maximum reduction in the PL intensity and the improvement in charge carrier lifetime was observed for TiO doped with 1 at.% W (1W-TiO ), which also displayed the highest photo-activity for the degradation of p-nitro phenol pollutant in water. Tuning of rGO/TiO ratio (weight) disclosed that the highest activity can be achieved with the composite formed by taking equal amounts of TiO and rGO (1:1), in which the strong interaction between TiO and rGO causes an effective charge transfer via bonds formed near the interface as indicated by XPS. Both these optimized concentrations were utilized to form the composite rGO/1W-TiO , which showed the highest activity in photo-degradation of p-nitro phenol (87%) as compared to rGO/TiO (42%), 1W-TiO (62%) and pure TiO (29%) in 180 min. XPS and PL results revealed that in the present nanocomposite, tungsten species traps the excited electron to reduce the interband recombination in the bulk, while the interaction between TiO and rGO creates a channel for fast transfer of excited electrons towards the latter before being recombined on the surface defect sites.
[Mh] Termos MeSH primário: Grafite
Titânio
Tungstênio
[Mh] Termos MeSH secundário: Catálise
Elétrons
Óxidos
Fenol
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Oxides); 15FIX9V2JP (titanium dioxide); 339NCG44TV (Phenol); 7782-42-5 (Graphite); D1JT611TNE (Titanium); V9306CXO6G (Tungsten)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171113
[Lr] Data última revisão:
171113
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170816
[St] Status:MEDLINE


  9 / 4458 MEDLINE  
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[PMID]:28764071
[Au] Autor:Zhang N; Liu X; Jin X; Li C; Wu X; Yang S; Ning J; Yanne P
[Ad] Endereço:College of Information Engineering, Northwest A&F University, Yangling 712100, China.
[Ti] Título:Determination of total iron-reactive phenolics, anthocyanins and tannins in wine grapes of skins and seeds based on near-infrared hyperspectral imaging.
[So] Source:Food Chem;237:811-817, 2017 Dec 15.
[Is] ISSN:0308-8146
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Phenolics contents in wine grapes are key indicators for assessing ripeness. Near-infrared hyperspectral images during ripening have been explored to achieve an effective method for predicting phenolics contents. Principal component regression (PCR), partial least squares regression (PLSR) and support vector regression (SVR) models were built, respectively. The results show that SVR behaves globally better than PLSR and PCR, except in predicting tannins content of seeds. For the best prediction results, the squared correlation coefficient and root mean square error reached 0.8960 and 0.1069g/L (+)-catechin equivalents (CE), respectively, for tannins in skins, 0.9065 and 0.1776 (g/L CE) for total iron-reactive phenolics (TIRP) in skins, 0.8789 and 0.1442 (g/L M3G) for anthocyanins in skins, 0.9243 and 0.2401 (g/L CE) for tannins in seeds, and 0.8790 and 0.5190 (g/L CE) for TIRP in seeds. Our results indicated that NIR hyperspectral imaging has good prospects for evaluation of phenolics in wine grapes.
[Mh] Termos MeSH primário: Vitis
[Mh] Termos MeSH secundário: Antocianinas
Ferro
Fenol
Sementes
Taninos
Vinho
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anthocyanins); 0 (Tannins); 339NCG44TV (Phenol); E1UOL152H7 (Iron)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171031
[Lr] Data última revisão:
171031
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170803
[St] Status:MEDLINE


  10 / 4458 MEDLINE  
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[PMID]:28759448
[Au] Autor:Gao J; Yan J; Liu Y; Zhang J; Guo Z
[Ad] Endereço:Research Center of Shanxi Province for High Gravity Chemical Engineering and Technology, North University of China, Taiyuan 030051, Shanxi Province, China E-mail: zbgaojing@163.com.
[Ti] Título:A novel electro-catalytic degradation method of phenol wastewater with Ti/IrO -Ta O anodes in high-gravity fields.
[So] Source:Water Sci Technol;76(3-4):662-670, 2017 Jul.
[Is] ISSN:0273-1223
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:In the electro-catalytic degradation process of phenol wastewater, bubbles and mass transfer limitation will result in the decrease in wastewater degradation efficiency, a long electrolysis time and a high energy consumption. Self-made Ti/IrO -Ta O anodes and a high-gravity electro-catalytic reactor were used to improve them. The Ti/IrO -Ta O anode was prepared with a thermal decomposition method and characterized by scanning electron microscopy (SEM). Under optimum conditions, the removal efficiencies of phenol, total organic carbon (TOC) and chemical oxygen demand (COD) respectively reached 94.77%, 50.96% and 41.2% after 2 h electrolysis in the high-gravity field, which were respectively 10.93%, 16.72% and 24.84% higher than those in the normal gravity field. For about the same removal efficiencies, the electrolysis time and energy consumed in the high-gravity field were 33.3% and 15.4% lower than those consumed in the normal gravity field, respectively. The degradation pathway of phenol detected by high performance liquid chromatography (HPLC) was unchanged in the high-gravity field, but the degradation rate of phenol increased. The Ti/IrO -Ta O anode provided good stability because the removal efficiencies of phenol and TOC decreased slightly and the surface morphology of the coating was almost unchanged when it had been used in electrolysis for 11 months, about 1,200 h, in the high-gravity field. Results indicated that the phenol wastewater degradation efficiency was improved, the time was shortened, and the energy consumption was reduced in the high-gravity field.
[Mh] Termos MeSH primário: Eletroquímica/métodos
Óxidos/química
Fenol/química
Tantálio/química
Titânio/química
Águas Residuais
Poluentes Químicos da Água/química
[Mh] Termos MeSH secundário: Catálise
Eletroquímica/instrumentação
Eletrodos
Eletrólise
Irídio/química
Fenóis
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Oxides); 0 (Phenols); 0 (Waste Water); 0 (Water Pollutants, Chemical); 12030-49-8 (iridium oxide); 339NCG44TV (Phenol); 44448S9773 (Iridium); 6424HBN274 (Tantalum); D1JT611TNE (Titanium); OEZ64Z53M4 (tantalum oxide)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170801
[St] Status:MEDLINE
[do] DOI:10.2166/wst.2017.262



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