Base de dados : MEDLINE
Pesquisa : E05.196.155.249 [Categoria DeCS]
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[PMID]:28503942
[Au] Autor:Wang ZD; Li LH; Xia H; Wang F; Yang LG; Wang SK; Sun GJ
[Ad] Endereço:a Key Laboratory of Environmental Medicine and Engineering of Ministry of Education, and Department of Nutrition & Food Hygiene, School of Public Health , Southeast University , Nanjing , China.
[Ti] Título:Optimisation of steam distillation extraction oil from onion by response surface methodology and its chemical composition.
[So] Source:Nat Prod Res;32(1):112-115, 2018 Jan.
[Is] ISSN:1478-6427
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Oil extraction from onion was performed by steam distillation. Response surface methodology was applied to evaluate the effects of ratio of water to raw material, extraction time, zymolysis temperature and distillation times on yield of onion oil. The maximum extraction yield (1.779%) was obtained as following conditions: ratio of water to raw material was 1, extraction time was 2.5 h, zymolysis temperature was 36° and distillation time was 2.6 h. The experimental values agreed well with those predicted by regression model. The chemical composition of extracted onion oil under the optimum conditions was analysed by gas chromatography-mass spectrometry technology. The results showed that sulphur compounds, like alkanes, sulphide, alkenes, ester and alcohol, were the major components of onion oil.
[Mh] Termos MeSH primário: Destilação/métodos
Cebolas/química
Óleos Vegetais/isolamento & purificação
Sulfetos/isolamento & purificação
[Mh] Termos MeSH secundário: Cromatografia Gasosa-Espectrometria de Massas
Óleos Vegetais/química
Vapor
Sulfetos/química
Temperatura Ambiente
Água
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Plant Oils); 0 (Steam); 0 (Sulfides); 059QF0KO0R (Water); 4P3VLD98FL (onion oil)
[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:170516
[St] Status:MEDLINE
[do] DOI:10.1080/14786419.2017.1327863


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[PMID]:29187951
[Au] Autor:Warsito W; Palungan MH; Utomo EP
[Ad] Endereço:Chemistry Department, Faculty of Natural Science, Brawijaya University, Jawa Timur, Indonesia.
[Ti] Título:Profiling study of the major and minor components of kaffir lime oil ( .) in the fractional distillation process.
[So] Source:Pan Afr Med J;27:282, 2017.
[Is] ISSN:1937-8688
[Cp] País de publicação:Uganda
[La] Idioma:eng
[Ab] Resumo:Introduction: Essential oil is consisting of complex component. It is divided into major and minor component. Therefore, this study aims to examine the distribution of major and minor components on Kaffir lime oil by using fractional distillation. Fractional distillation and distributional analysis of components within fractions have been performed on kaffir lime oil ( .). Methods: Fractional distillation was performed by using PiloDist 104-VTU, column length of 2 m (number of plate 120), the system pressure was set on 5 and 10 mBar, while the reflux ratio varied on 10/10, 20/10 and 60/10, and the chemical composition analysis was done by using GC-MS. Chemical composition of the distillated lime oil consisted of mix-twigs and leaves that composed of 20 compounds, with five main components ß-citronellal (46.40%), L-linalool (13.11%), ß-citronellol (11.03%), citronelyl acetate (6.76%) and sabinen (5.91%). Results: The optimum conditions for fractional distillation were obtained at 5 mBar pressure with reflux ratio of 10/10. Components of ß -citronellal and L-linalool were distributed in the fraction-1 to fraction 9, hydrocarbon monoterpenes components were distributed only on the fraction-1 to fraction 4, while the oxygenated monoterpenes components dominated the fraction-5 to fraction-9. Conclusion: The highest level of ß-citronellal was 84.86% (fraction-7), L-linalool 20.13% (fraction-5), sabinen 19.83% (fraction-1), and the component level of 4-terpeneol, ß-citronellol and sitronelyl acetate respectively 7.16%; 12.27%; 5.22% (fraction-9).
[Mh] Termos MeSH primário: Citrus/química
Óleos Voláteis/química
Extratos Vegetais/química
[Mh] Termos MeSH secundário: Destilação
Cromatografia Gasosa-Espectrometria de Massas/métodos
Óleos Voláteis/isolamento & purificação
Extratos Vegetais/isolamento & purificação
Folhas de Planta
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Oils, Volatile); 0 (Plant Extracts)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171219
[Lr] Data última revisão:
171219
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171201
[St] Status:MEDLINE
[do] DOI:10.11604/pamj.2017.27.282.9679


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[PMID]:28764020
[Au] Autor:Montevecchi G; Masino F; Di Pascale N; Vasile Simone G; Antonelli A
[Ad] Endereço:Centro di Ricerca Interdipartimentale per il Miglioramento e la Valorizzazione delle Risorse Biologiche Agro-Alimentari BIOGEST - SITEIA, Università degli Studi di Modena e Reggio Emilia, Tecnopolo di Reggio Emilia, Piazzale Europa 1, 42124 Reggio Emilia, Italy. Electronic address: giuseppe.montevec
[Ti] Título:Study of the repartition of phthalate esters during distillation of wine for spirit production.
[So] Source:Food Chem;237:46-52, 2017 Dec 15.
[Is] ISSN:0308-8146
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Due to health concerns and legal matters, an investigation to limit phthalates esters (PEAs) in spirits is necessary. A lab still was used to perform pilot distillations according to the official method for brandy production in order to explore the repartition into the distilled fractions of each PAE. The process was divided in two steps: a première chauffe and a bonne chauffe. The former step included the cut into heads, heart and tails, while the latter into heads, brandy, secondes, and tails. The behaviour of each PAE during distillation was affected by its own chemical nature. Dibutyl phthalate (DBP) was entirely carried over into the distillate, while bis(2-ethylhexyl) phthalate (DEHP) only partially, and diisononyl phthalate (DINP) accumulated in the stillage. During the bonne chauffe, DBP and DEHP accumulated in the secondes more than in the brandy. A rectification step of the secondes was demonstrated to considerably reduce PAEs concentration.
[Mh] Termos MeSH primário: Ácidos Ftálicos/química
Vinho
[Mh] Termos MeSH secundário: Destilação
Ésteres
Cromatografia Gasosa-Espectrometria de Massas
Seres Humanos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Esters); 0 (Phthalic Acids); 6O7F7IX66E (phthalic acid)
[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


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[PMID]:28763639
[Au] Autor:Xie M; Luo W; Gray SR
[Ad] Endereço:Institute for Sustainability and Innovation, College of Engineering and Science, Victoria University, PO Box 14428, Melbourne, Victoria, 8001, Australia. Electronic address: ming.xie@vu.edu.au.
[Ti] Título:Surface pattern by nanoimprint for membrane fouling mitigation: Design, performance and mechanisms.
[So] Source:Water Res;124:238-243, 2017 Nov 01.
[Is] ISSN:1879-2448
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Imparting water treatment membrane with surface pattern by nanoimprint offered a novel approach to fouling resistance. We employed nanoimprint to fabricate line-shape nanostructure on membrane distillation (MD) membrane surface. Patterned MD membrane exhibited strong antifouling property to Bovine Serum Albumin (BSA) protein during MD separation. Water flux decline and protein deposition were substantially minimized on the patterned MD membrane in comparison with the pristine one. Such lower fouling propensity on the patterned MD membrane was mainly driven by the weak hydrophobic interaction between BSA protein and patterned MD membrane surface. Weaker adhesion force mapping of the patterned MD membrane was quantified. Representative force-distance curve of pristine MD membrane showed a strong attractive depletion force comparing with that of patterned one. The simple, chemical-free, and scalable nanofabrication approach enables varying designs on membrane surface for special membrane properties.
[Mh] Termos MeSH primário: Membranas Artificiais
Purificação da Água
[Mh] Termos MeSH secundário: Animais
Bovinos
Destilação
Interações Hidrofóbicas e Hidrofílicas
Membranas
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Membranes, Artificial)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171018
[Lr] Data última revisão:
171018
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170802
[St] Status:MEDLINE


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[PMID]:28756673
[Au] Autor:Awad P; Athès V; Decloux ME; Ferrari G; Snakkers G; Raguenaud P; Giampaoli P
[Ad] Endereço:UMR 782 Génie et Microbiologie des Procédés Alimentaires (GMPA), AgroParisTech, INRA, Université Paris-Saclay , F-78330 Thiverval-Grignon, France.
[Ti] Título:Evolution of Volatile Compounds during the Distillation of Cognac Spirit.
[So] Source:J Agric Food Chem;65(35):7736-7748, 2017 Sep 06.
[Is] ISSN:1520-5118
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Cognac wine spirit has a complex composition in volatile compounds which contributes to its organoleptic profile. This work focused on the batch distillation process and, in particular, on volatile compounds specifically produced by chemical reactions during the distillation of Cognac wine spirit, traditionally conducted in two steps with charentais pot stills. The aim of this study was to characterize these volatile compounds formed during distillation. Sampling has been performed on the distillates and inside the boiler during a typical Cognac distillation. The analysis of these samples allowed us to perform a mass balance and to point out several types of volatile compounds whose quantities strongly increased during the distillation process. These compounds were distinguished by their chemical family. It has been found that the first distillation step was decisive for the formation of volatile compounds. Moreover, 2 esters, 3 aldehydes, 12 norisoprenoids, and 3 terpenes were shown to be generated during the process. These results suggest that some volatile compounds found in Cognac spirit are formed during distillation due to chemical reactions induced by high temperature. These findings give important indications to professional distillers in order to enhance the product's quality.
[Mh] Termos MeSH primário: Bebidas Alcoólicas/análise
Terpenos/química
Compostos Orgânicos Voláteis/química
[Mh] Termos MeSH secundário: Destilação
Cromatografia Gasosa-Espectrometria de Massas
Vitis/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Terpenes); 0 (Volatile Organic Compounds)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170915
[Lr] Data última revisão:
170915
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170801
[St] Status:MEDLINE
[do] DOI:10.1021/acs.jafc.7b02406


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[PMID]:28675845
[Au] Autor:Naidu G; Jeong S; Johir MAH; Fane AG; Kandasamy J; Vigneswaran S
[Ad] Endereço:Faculty of Engineering, University of Technology Sydney (UTS), P.O. Box 123, Broadway, NSW 2007 Australia.
[Ti] Título:Rubidium extraction from seawater brine by an integrated membrane distillation-selective sorption system.
[So] Source:Water Res;123:321-331, 2017 Oct 15.
[Is] ISSN:1879-2448
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The ultimate goal of seawater reverse osmosis (SWRO) brine management is to achieve minimal liquid discharge while recovering valuable resources. The suitability of an integrated system of membrane distillation (MD) with sorption for the recovery of rubidium (Rb ) and simultaneous SWRO brine volume reduction has been evaluated for the first time. Polymer encapsulated potassium copper hexacyanoferrate (KCuFC(PAN)) sorbent exhibited a good selectivity for Rb sorption with 10-15% increment at 55 °C (Langmuir Q = 125.11 ± 0.20 mg/g) compared to at 25 °C (Langmuir Q = 108.71 ± 0.20 mg/g). The integrated MD-KCuFC(PAN) system with periodic membrane cleaning, enabled concentration of SWRO brine to a volume concentration factor (VCF) of 2.9 (65% water recovery). A stable MD permeate flux was achieved with good quality permeate (conductivity of 15-20 µS/cm). Repeated cycles of MD-KCuFC(PAN) sorption with SWRO brine enabled the extraction of 2.26 mg Rb from 12 L of brine (equivalent to 1.9 kg of Rb/day, or 0.7 tonne/yr from a plant producing 10,000 m /day brine). KCuFC(PAN) showed a high regeneration and reuse capacity. NH Cl air stripping followed by resorcinol formaldehyde (RF) resin filtration enabled to recover Rb from the desorbed solution.
[Mh] Termos MeSH primário: Rubídio/química
Purificação da Água
[Mh] Termos MeSH secundário: Destilação
Membranas Artificiais
Osmose
Sais
Água do Mar
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Membranes, Artificial); 0 (Salts); 0 (brine); MLT4718TJW (Rubidium)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171013
[Lr] Data última revisão:
171013
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170705
[St] Status:MEDLINE


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[PMID]:28617282
[Au] Autor:Wu CY; Chen SS; Zhang DZ; Kobayashi J
[Ad] Endereço:Graduate School of Environmental Symbiotic Sciences, Prefectural University of Kumamoto, 3-1-100, Tsukide, Higashi-ku, Kumamoto 862-8502, Japan.
[Ti] Título:Hg removal and the effects of coexisting metals in forward osmosis and membrane distillation.
[So] Source:Water Sci Technol;75(11-12):2622-2630, 2017 Jun.
[Is] ISSN:0273-1223
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:In this study, we investigate the rejection of Hg, Cd, and Pb and the effect of coexisting metals on Hg removal through forward osmosis (FO) and membrane distillation (MD) in order to establish a more effective water treatment process. The results of our laboratory experiment indicate that more than 97% of the rejection for each metal is achieved through the FO system, and this rejection is the highest among previous studies using membrane filtrations. Moreover, we examine the matrix effect of the coexisting Cd and Pb on the rejection of Hg in the FO system. Hg rejection increases with increase in the concentration of the coexisting metals. Furthermore, we study the effect of the Hg concentration and the water temperature on rejection of Hg . Indeed, the rejection of Hg is achieved above 95% under any condition. However, approximately 1-10 ppb Hg from the feed solution remains in the draw solution due to permeation. Therefore, we use a FO-MD hybrid system. Approximately 100% rejection of Hg and a stable water flux are achieved. Thus, the FO-MD hybrid system is considered an important alternative to previous studies using membrane filtration for heavy metals removal.
[Mh] Termos MeSH primário: Destilação/métodos
Osmose
Eliminação de Resíduos Líquidos/métodos
Poluentes Químicos da Água/química
Purificação da Água/métodos
[Mh] Termos MeSH secundário: Cádmio/química
Chumbo/química
Membranas Artificiais
Mercúrio/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Membranes, Artificial); 0 (Water Pollutants, Chemical); 00BH33GNGH (Cadmium); 2P299V784P (Lead); FXS1BY2PGL (Mercury)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170817
[Lr] Data última revisão:
170817
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170616
[St] Status:MEDLINE
[do] DOI:10.2166/wst.2017.143


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[PMID]:28434713
[Au] Autor:Lou C; Guo D; Wang N; Wu S; Zhang P; Zhu Y
[Ad] Endereço:Department of Chemistry, Xixi Campus, Zhejiang University, Hangzhou 310028, China.
[Ti] Título:Detection of trace fluoride in serum and urine by online membrane-based distillation coupled with ion chromatography.
[So] Source:J Chromatogr A;1500:145-152, 2017 Jun 02.
[Is] ISSN:1873-3778
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:An online membrane-based distillation (MBD) coupled with ion chromatography (IC) method was proposed for automatic detection of trace fluoride (F ) in serum and urine samples. The system consisted of a sample vessel, a lab-made membrane module and an ion chromatograph. Hydrophobic polytetrafluoroethylene (PTFE) hollow fiber membrane was used in MBD which was directly performed in serum and urine samples to eliminate the matrix interferences and enrich fluoride, while enabling automation. The determination of fluoride in biological samples was carried out by IC with suppressed conductometric detection. The proposed method feasibly determined trace fluoride in serum and urine matrices with the optimized parameters, such as acid concentration, distillation temperature, and distillation time, etc. Fluoride exhibited satisfactory linearity in the range of 0.01-5.0mg/L with a correlation coefficient of 0.9992. The limit of detection (LOD, S/N=3) and limit of quantification (LOQ, S/N=10) were 0.78µg/L and 2.61µg/L, respectively. The relative standard deviations of peak area and peak height were all less than 5.15%. The developed method was validated for the determination of fluoride in serum and urine with good spiked recoveries ranging between 97.1-101.9%. This method also can be proposed as a suitable alternative for the analysis of fluoride in other complex biological samples.
[Mh] Termos MeSH primário: Cromatografia/métodos
Destilação/métodos
Fluoretos/sangue
Fluoretos/urina
[Mh] Termos MeSH secundário: Cromatografia/instrumentação
Seres Humanos
Interações Hidrofóbicas e Hidrofílicas
[Pt] Tipo de publicação:EVALUATION STUDIES; JOURNAL ARTICLE
[Nm] Nome de substância:
Q80VPU408O (Fluorides)
[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:170425
[St] Status:MEDLINE


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[PMID]:28433881
[Au] Autor:Liu C; Chen L; Zhu L
[Ad] Endereço:Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 210098, China.
[Ti] Título:Fouling behavior of lysozyme on different membrane surfaces during the MD operation: An especial interest in the interaction energy evaluation.
[So] Source:Water Res;119:33-46, 2017 Aug 01.
[Is] ISSN:1879-2448
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The membrane fouling behaviors of lysozyme (LYS) on three different membranes were systematically investigated during the membrane distillation (MD) process, including polypropylene (PP), polytetrafluoroethylene (PTFE) and polyvinylidene fluoride (PVDF) membranes. The results showed that PP membrane was not suitable for the MD operation due to its lower heat resistance. A flux decline of 50% was observed for the PTFE, while PVDF displayed a more severe decrement of 70%. Additionally, the PTFE and PVDF membranes both demonstrated a faster flux decline during the early period, and then a clear decrement of fouling rate was obtained at the later period. To better understand the interactions between LYS and different membranes, the interaction energy between LYS and the reconstructed membrane surface, represented by XDLVO potential, was calculated by surface element integration. The PVDF membrane exhibited higher roughness and lower energy barrier, indicating that rougher membrane was tended to be fouled by LYS. Finally, a "four stages model" was suggested for the MD fouling process, which was associated with three LYS deposition patterns of smooth, protuberance and valley.
[Mh] Termos MeSH primário: Membranas Artificiais
Muramidase/química
[Mh] Termos MeSH secundário: Destilação
Polipropilenos
Politetrafluoretileno
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Membranes, Artificial); 0 (Polypropylenes); 9002-84-0 (Polytetrafluoroethylene); EC 3.2.1.17 (Muramidase)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171019
[Lr] Data última revisão:
171019
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170424
[St] Status:MEDLINE


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[PMID]:28341152
[Au] Autor:Park SY; Lee HJ; Khim JS; Kim GB
[Ad] Endereço:Department of Marine Environmental Engineering, Gyeongsang National University, Tongyeong, Republic of Korea.
[Ti] Título:Identification of genotoxic compounds in crude oil using fractionation according to distillation, polarity and K .
[So] Source:Mar Pollut Bull;114(2):1159-1163, 2017 Jan 30.
[Is] ISSN:1879-3363
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:We examined the degree of DNA damage caused by fractions of crude oil in accordance with the boiling points, polarity and log K . Relatively high DNA damage was observed in the aromatic fraction (290-330°C) and resin and polar fraction (350-400°C). The resin and polar fraction showed relatively high genotoxicity compared with the aliphatic and aromatic fraction at the 1-4 log K range. At the 6-7 log K range, the aromatic fraction showed relatively high DNA damage compared with the aliphatic and resin and polar fraction. In particular, every detailed fraction in accordance with the log K values (aliphatic and aromatic (310-320°C) and resins and polar fractions (370-380°C)) showed one or less than one DNA damage. However, the fractions before separation in accordance with log K values (aliphatic and aromatic (310-320°C) and resin and polar (370-380°C) fractions) showed high DNA damage. Thus, we confirm the synergistic action between the detailed compounds.
[Mh] Termos MeSH primário: Dano ao DNA
Linguado
Petróleo
[Mh] Termos MeSH secundário: Animais
Fracionamento Químico
Destilação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Petroleum)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170517
[Lr] Data última revisão:
170517
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170326
[St] Status:MEDLINE



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