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  1 / 1301 MEDLINE  
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[PMID]:29351290
[Au] Autor:Dislich C; Hettig E; Salecker J; Heinonen J; Lay J; Meyer KM; Wiegand K; Tarigan S
[Ad] Endereço:Ecosystem Modelling, Faculty of Forest Sciences and Forest Ecology, University of Goettingen, Goettingen, Germany.
[Ti] Título:Land-use change in oil palm dominated tropical landscapes-An agent-based model to explore ecological and socio-economic trade-offs.
[So] Source:PLoS One;13(1):e0190506, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Land-use changes have dramatically transformed tropical landscapes. We describe an ecological-economic land-use change model as an integrated, exploratory tool used to analyze how tropical land-use change affects ecological and socio-economic functions. The model analysis seeks to determine what kind of landscape mosaic can improve the ensemble of ecosystem functioning, biodiversity, and economic benefit based on the synergies and trade-offs that we have to account for. More specifically, (1) how do specific ecosystem functions, such as carbon storage, and economic functions, such as household consumption, relate to each other? (2) How do external factors, such as the output prices of crops, affect these relationships? (3) How do these relationships change when production inefficiency differs between smallholder farmers and learning is incorporated? We initialize the ecological-economic model with artificially generated land-use maps parameterized to our study region. The economic sub-model simulates smallholder land-use management decisions based on a profit maximization assumption. Each household determines factor inputs for all household fields and decides on land-use change based on available wealth. The ecological sub-model includes a simple account of carbon sequestration in above-ground and below-ground vegetation. We demonstrate model capabilities with results on household consumption and carbon sequestration from different output price and farming efficiency scenarios. The overall results reveal complex interactions between the economic and ecological spheres. For instance, model scenarios with heterogeneous crop-specific household productivity reveal a comparatively high inertia of land-use change. Our model analysis even shows such an increased temporal stability in landscape composition and carbon stocks of the agricultural area under dynamic price trends. These findings underline the utility of ecological-economic models, such as ours, to act as exploratory tools which can advance our understanding of the mechanisms underlying the trade-offs and synergies of ecological and economic functions in tropical landscapes.
[Mh] Termos MeSH primário: Arecaceae
Conservação dos Recursos Naturais/métodos
Produtos Agrícolas/economia
Ecossistema
Modelos Teóricos
Óleo de Palmeira
Clima Tropical
[Mh] Termos MeSH secundário: Sequestro de Carbono
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
5QUO05548Z (Palm Oil)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180215
[Lr] Data última revisão:
180215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180120
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190506


  2 / 1301 MEDLINE  
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[PMID]:29303272
[Au] Autor:Chai XH; Meng Z; Cao PR; Jiang J; Liu YF
[Ad] Endereço:State Key Laboratory of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, School of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University , 1800 Lihu Road, Wuxi 214122, Jiangsu, P
[Ti] Título:Comparative Analysis of Small-Molecule Diffusivity in Different Fat Crystal Network.
[So] Source:J Agric Food Chem;66(4):1015-1022, 2018 Jan 31.
[Is] ISSN:1520-5118
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Oil migration and fat recrystallization in fat-structured food materials can result in significant deterioration in food quality. Consequently, it is important to monitor and quantify the diffusivities of the migrants in fat crystal network. The diffusion coefficients of Nile red dye in liquid oils through fully hydrogenated palm kernel oil (FHPKO)/triolein (OOO) and fully hydrogenated soybean oil (FHSO)/triolein (OOO) systems were evaluated by the fluorescence recovery after photobleaching (FRAP) method. The effective diffusion coefficients (D ) and mobile fraction (M ) increased with the decrease of solid fat contents (SFC), with the changes of microstructure from more densely to slightly larger packed clusters for both FHPKO/OOO and FHSO/OOO systems. In addition, microstructural parameters of these systems were estimated by the image analysis. The results showed that the diffusion of dye and liquid oil was affected by the microstructure. The higher D was associated with lower fractal dimensions, larger crystal thickness, and larger average particle sizes. Finally, higher-permeability coefficients were calculated according to Darcy's Law, and it was significantly correlated to the D .
[Mh] Termos MeSH primário: Óleos Vegetais/química
[Mh] Termos MeSH secundário: Cristalização
Difusão
Recuperação de Fluorescência Após Fotodegradação
Corantes Fluorescentes
Microscopia Confocal
Oxazinas
Óleo de Palmeira/química
Óleo de Soja/química
Trioleína/química
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Fluorescent Dyes); 0 (Oxazines); 0 (Plant Oils); 122-32-7 (Triolein); 5QUO05548Z (Palm Oil); 8001-22-7 (Soybean Oil); P476F1L81G (nile red)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180212
[Lr] Data última revisão:
180212
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180106
[St] Status:MEDLINE
[do] DOI:10.1021/acs.jafc.7b04677


  3 / 1301 MEDLINE  
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[PMID]:29260544
[Au] Autor:Tiong SH; Saparin N; Teh HF; Ng TLM; Md Zain MZB; Neoh BK; Md Noor A; Tan CP; Lai OM; Appleton DR
[Ad] Endereço:Sime Darby Technology Centre Sdn. Bhd. , 1st Floor, Block B, UPM-MTDC Technology Centre III, Lebuh Silikon, 43400 Serdang, Selangor, Malaysia.
[Ti] Título:Natural Organochlorines as Precursors of 3-Monochloropropanediol Esters in Vegetable Oils.
[So] Source:J Agric Food Chem;66(4):999-1007, 2018 Jan 31.
[Is] ISSN:1520-5118
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:During high-temperature refining of vegetable oils, 3-monochloropropanediol (3-MCPD) esters, possible carcinogens, are formed from acylglycerol in the presence of a chlorine source. To investigate organochlorine compounds in vegetable oils as possible precursors for 3-MCPD esters, we tested crude palm, soybean, rapeseed, sunflower, corn, coconut, and olive oils for the presence of organochlorine compounds. Having found them in all vegetable oils tested, we focused subsequent study on oil palm products. Analysis of the chlorine isotope mass pattern exhibited in high-resolution mass spectrometry enabled organochlorine compound identification in crude palm oils as constituents of wax esters, fatty acid, diacylglycerols, and sphingolipids, which are produced endogenously in oil palm mesocarp throughout ripening. Analysis of thermal decomposition and changes during refining suggested that these naturally present organochlorine compounds in palm oils and perhaps in other vegetable oils are precursors of 3-MCPD esters. Enrichment and dose-response showed a linear relationship to 3-MCPD ester formation and indicated that the sphingolipid-based organochlorine compounds are the most active precursors of 3-MCPD esters.
[Mh] Termos MeSH primário: Hidrocarbonetos Clorados/química
Óleos Vegetais/química
alfa-Cloridrina/química
[Mh] Termos MeSH secundário: Carcinógenos
Cloro/química
Ésteres/química
Contaminação de Alimentos
Manipulação de Alimentos
Glicerídeos/química
Óleo de Palmeira/química
alfa-Cloridrina/análise
alfa-Cloridrina/síntese química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Carcinogens); 0 (Esters); 0 (Glycerides); 0 (Hydrocarbons, Chlorinated); 0 (Plant Oils); 4R7X1O2820 (Chlorine); 5QUO05548Z (Palm Oil); 96-24-2 (alpha-Chlorohydrin)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180212
[Lr] Data última revisão:
180212
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171221
[St] Status:MEDLINE
[do] DOI:10.1021/acs.jafc.7b04995


  4 / 1301 MEDLINE  
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[PMID]:28946302
[Au] Autor:Zahrina I; Nasikin M; Krisanti E; Mulia K
[Ad] Endereço:Department of Chemical Engineering, Universitas Indonesia, Depok 16424, Indonesia; Department of Chemical Engineering, University of Riau, Pekanbaru 28293, Indonesia.
[Ti] Título:Deacidification of palm oil using betaine monohydrate-based natural deep eutectic solvents.
[So] Source:Food Chem;240:490-495, 2018 Feb 01.
[Is] ISSN:0308-8146
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:In the palm oil industry, the deacidification process is performed by steam stripping which causes the loss of most of palm oil's natural antioxidants due to high temperature. The liquid-liquid extraction process which is carried out at low temperature is preferable in order to preserve these compounds. The use of hydrated ethanol can reduce the losses of antioxidants, but the ability of this solvent to extract free fatty acids also decreases. Betaine monohydrate-based natural deep eutectic solvents (NADES) have extensive potential for this process. The selectivity of these NADES was determined to select a preferable solvent. The betaine monohydrate-glycerol NADES in a molar ratio of 1:8 was determined to be the preferred solvent with the highest selectivity. This solvent has an efficiency of palmitic acid extraction of 34.14%, and the amount of antioxidants can be preserved in the refined palm oil up to 99%. The compounds are stable during extraction.
[Mh] Termos MeSH primário: Óleos Vegetais/química
[Mh] Termos MeSH secundário: Betaína
Glicerol
Óleo de Palmeira
Solventes
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Plant Oils); 0 (Solvents); 3SCV180C9W (Betaine); 5QUO05548Z (Palm Oil); PDC6A3C0OX (Glycerol)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171128
[Lr] Data última revisão:
171128
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170927
[St] Status:MEDLINE


  5 / 1301 MEDLINE  
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Buzalaf, Marilia Afonso Rabelo
Texto completo SciELO Brasil
[PMID]:28877281
[Au] Autor:Ionta FQ; Alencar CRB; Val PP; Boteon AP; Jordão MC; Honório HM; Buzalaf MAR; Rios D
[Ad] Endereço:Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Odontopediatria, Ortodontia e Saúde Coletiva, Bauru, SP, Brasil.
[Ti] Título:Effect of vegetable oils applied over acquired enamel pellicle on initial erosion.
[So] Source:J Appl Oral Sci;25(4):420-426, 2017 Jul-Aug.
[Is] ISSN:1678-7765
[Cp] País de publicação:Brazil
[La] Idioma:eng
[Ab] Resumo:Objective: The prevalence of dental erosion has been recently increasing, requiring new preventive and therapeutic approaches. Vegetable oils have been studied in preventive dentistry because they come from a natural, edible, low-cost, and worldwide accessible source. This study aimed to evaluate the protective effect of different vegetable oils, applied in two concentrations, on initial enamel erosion. Material and Methods: Initially, the acquired pellicle was formed in situ for 2 hours. Subsequently, the enamel blocks were treated in vitro according to the study group (n=12/per group): GP5 and GP100 - 5% and pure palm oil, respectively; GC5 and GC100 - 5% and pure coconut oil; GSa5 and GSa100 - 5% and pure safflower oil; GSu5 and GSu100 - 5% and pure sunflower oil; GO5 and GO100 - 5% and pure olive oil; CON- - Deionized Water (negative control) and CON+ - Commercial Mouthwash (Elmex® Erosion Protection Dental Rinse, GABA/positive control). Then, the enamel blocks were immersed in artificial saliva for 2 minutes and subjected to short-term acid exposure in 0.5% citric acid, pH 2.4, for 30 seconds, to promote enamel surface softening. The response variable was the percentage of surface hardness loss [((SHi - SHf) / SHf )×100]. Data were analyzed by one-way ANOVA and Tukey's test (p<0.05). Results: Enamel blocks of GP100 presented similar hardness loss to GSu100 (p>0.05) and less than the other groups (p<0.05). There was no difference between GP5, GC5, GC100, GSa5, GSu100, GSa100, GSu5, GO5, GO100, CON- and CON+. Conclusion: Palm oil seems to be a promising alternative for preventing enamel erosion. However, further studies are necessary to evaluate a long-term erosive cycling.
[Mh] Termos MeSH primário: Película Dentária/efeitos dos fármacos
Óleos Vegetais/uso terapêutico
Erosão Dentária/prevenção & controle
[Mh] Termos MeSH secundário: Testes de Dureza
Seres Humanos
Teste de Materiais
Óleo de Palmeira
Óleos Vegetais/farmacologia
Distribuição Aleatória
Reprodutibilidade dos Testes
Saliva/química
Saliva Artificial
Propriedades de Superfície
Fatores de Tempo
Desmineralização do Dente/prevenção & controle
Resultado do Tratamento
Adulto Jovem
[Pt] Tipo de publicação:EVALUATION STUDIES; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Plant Oils); 0 (Saliva, Artificial); 5QUO05548Z (Palm Oil)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:170907
[St] Status:MEDLINE


  6 / 1301 MEDLINE  
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[PMID]:28837912
[Au] Autor:Azhar B; Saadun N; Prideaux M; Lindenmayer DB
[Ad] Endereço:Biodiversity Unit, Institute of Bioscience, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia; Faculty of Forestry, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. Electronic address: b_azhar@upm.edu.my.
[Ti] Título:The global palm oil sector must change to save biodiversity and improve food security in the tropics.
[So] Source:J Environ Manage;203(Pt 1):457-466, 2017 Dec 01.
[Is] ISSN:1095-8630
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Most palm oil currently available in global markets is sourced from certified large-scale plantations. Comparatively little is sourced from (typically uncertified) smallholders. We argue that sourcing sustainable palm oil should not be determined by commercial certification alone and that the certification process should be revisited. There are so-far unrecognized benefits of sourcing palm oil from smallholders that should be considered if genuine biodiversity conservation is to be a foundation of 'environmentally sustainable' palm oil production. Despite a lack of certification, smallholder production is often more biodiversity-friendly than certified production from large-scale plantations. Sourcing palm oil from smallholders also alleviates poverty among rural farmers, promoting better conservation outcomes. Yet, certification schemes - the current measure of 'sustainability' - are financially accessible only for large-scale plantations that operate as profit-driven monocultures. Industrial palm oil is expanding rapidly in regions with weak environmental laws and enforcement. This warrants the development of an alternative certification scheme for smallholders. Greater attention should be directed to deforestation-free palm oil production in smallholdings, where production is less likely to cause large scale biodiversity loss. These small-scale farmlands in which palm oil is mixed with other crops should be considered by retailers and consumers who are interested in promoting sustainable palm oil production. Simultaneously, plantation companies should be required to make their existing production landscapes more compatible with enhanced biodiversity conservation.
[Mh] Termos MeSH primário: Biodiversidade
Abastecimento de Alimentos
Óleos Vegetais
[Mh] Termos MeSH secundário: Agricultura
Arecaceae
Conservação dos Recursos Naturais
Óleo de Palmeira
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Nm] Nome de substância:
0 (Plant Oils); 5QUO05548Z (Palm Oil)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170825
[St] Status:MEDLINE


  7 / 1301 MEDLINE  
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[PMID]:28768957
[Au] Autor:Ismail SAA; El-Anany AM; Ali RFM
[Ad] Endereço:Biochemistry Department, Faculty of Agriculture, Cairo University.
[Ti] Título:Regeneration of Used Frying Palm Oil with Coffee Silverskin (CS), CS Ash (CSA) and Nanoparticles of CS (NCS).
[So] Source:J Oleo Sci;66(8):897-905, 2017.
[Is] ISSN:1347-3352
[Cp] País de publicação:Japan
[La] Idioma:eng
[Ab] Resumo:The present investigation aimed to evaluate the efficiency of coffee silverskin (CS), CS ash (CSA) and nanoparticles of CS (NCS) in regeneration the quality of used frying palm oil. The adsorbents were mixed individually with used frying palm oil at level 4% (w/v) for 60 min. The properties of CS, CSA and NCS adsorbents were studied using (SEM) scanning electron microscopy technique. Some of physico-chemical characteristics of used frying palm oil (UFPO) and UFPO treated with adsorbents were determined. The results showed that the CS ash particles composed of irregular spherical and semispherical grains with deep cavities. The size of particles of CS ash ranged in diameter from 1.1 to 1.7 µm. The morphology of NCS consisted of cluster-type spherical nanoparticles and flakes. The particle size of NCS varies from 0.9 to 1.7 µm. Purification treatments caused marked (p<0.05) increases in the quality parameters of treated oil compared to untreated oil. The treatment of UFPO with 4% of adsorbents caused significant reductions in the content of free fatty acids ranged from 51.2 to 65.0%. The lowest level of peroxide (2.1 meq/kg) was recorded for UFPO treated with 4% of NCS. The highest reductions (72.8; 70.0%) in p-anisidine value were observed in UFPO treated with 4% of CSA and NCS, respectively. Treatment of UFPO with 4% of CS, CSA and NCS significantly lowered the polar content from 13.9% to 6.3, 4.8 and 3.9%, respectively. The results also indicate that CSA and NCS have nearly the same adsorption efficiency in lowering polymer content of UFPO. Filtration treatment of UFPO with 4% of CS, CSA and NCS markedly lowered the viscosity and colour values of treated UFPO.
[Mh] Termos MeSH primário: Café
Culinária
Filtração/métodos
Temperatura Alta
Nanopartículas
Óleos Vegetais/química
[Mh] Termos MeSH secundário: Adsorção
Compostos de Anilina/análise
Fenômenos Químicos
Cor
Ácidos Graxos não Esterificados/análise
Óleo de Palmeira
Tamanho da Partícula
Peróxidos/análise
Polímeros/análise
Viscosidade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Aniline Compounds); 0 (Coffee); 0 (Fatty Acids, Nonesterified); 0 (Peroxides); 0 (Plant Oils); 0 (Polymers); 575917SNR4 (4-anisidine); 5QUO05548Z (Palm Oil)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170804
[St] Status:MEDLINE
[do] DOI:10.5650/jos.ess17015


  8 / 1301 MEDLINE  
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[PMID]:28756671
[Au] Autor:Irías-Mata A; Stuetz W; Sus N; Hammann S; Gralla K; Cordero-Solano A; Vetter W; Frank J
[Ti] Título:Tocopherols, Tocomonoenols, and Tocotrienols in Oils of Costa Rican Palm Fruits: A Comparison between Six Varieties and Chemical versus Mechanical Extraction.
[So] Source:J Agric Food Chem;65(34):7476-7482, 2017 Aug 30.
[Is] ISSN:1520-5118
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Palm oil is one of the richest sources of tocotrienols and may contain other non-tocopherol vitamin E congeners. The vitamin E profiles of fully ripened fruit mesocarp of three Elaeis guineensis, two Elaeis oleifera, and one hybrid O × G palm fruit genotypes from Costa Rica were analyzed by high-performance liquid chromatography with fluorescence detection and gas chromatography-mass spectrometry after mechanical extraction by a screw press and chemical extraction with hexane. γ-Tocotrienol, α-tocotrienol, and α-tocopherol were the most abundant tocochromanols, while other tocopherols (ß-tocopherol, γ-tocopherol, and δ-tocopherol) and α-tocomonoenol were detected at minor concentrations. Significant differences in vitamin E profiles between genotypes were observed, and the variety E. oleifera Quepos (CB9204) had by far the highest content of total tocotrienols (890 µg/g of oil) and total vitamin E (892 µg/g of oil). Chemical extraction with hexane afforded up to 2.5-fold higher vitamin E yields than screw press extraction. α-Tocomonoenol co-eluted with γ-tocopherol in reversed-phase high-performance liquid chromatography analyses and is a possible source of error in the quantification of γ-tocopherol in foods.
[Mh] Termos MeSH primário: Arecaceae/química
Frutas/química
Óleos Vegetais/química
Tocoferóis/química
Tocotrienóis/química
[Mh] Termos MeSH secundário: Arecaceae/classificação
Cromatografia Líquida de Alta Pressão
Costa Rica
Frutas/classificação
Cromatografia Gasosa-Espectrometria de Massas
Óleo de Palmeira
Óleos Vegetais/isolamento & purificação
Tocoferóis/isolamento & purificação
Tocotrienóis/isolamento & purificação
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Plant Oils); 0 (Tocotrienols); 5QUO05548Z (Palm Oil); R0ZB2556P8 (Tocopherols)
[Em] Mês de entrada:1709
[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:10.1021/acs.jafc.7b02230


  9 / 1301 MEDLINE  
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[PMID]:28628983
[Au] Autor:Cheirsilp B; Thawechai T; Prasertsan P
[Ad] Endereço:Biotechnology for Bioresource Utilization Laboratory, Department of Industrial Biotechnology, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand. Electronic address: benjamas.che@psu.ac.th.
[Ti] Título:Immobilized oleaginous microalgae for production of lipid and phytoremediation of secondary effluent from palm oil mill in fluidized bed photobioreactor.
[So] Source:Bioresour Technol;241:787-794, 2017 Oct.
[Is] ISSN:1873-2976
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Oleaginous microalga Nannochloropsis sp. was immobilized in alginate gel beads and cultivated under optimal conditions that their growth and lipid production were comparable to those of free cells. The immobilized cells were used in phytoremediation of secondary effluent from palm oil mill and easily recovered by simple sieving method. The immobilized cells contributed to removal of nitrogen and phosphorus >90% and CO mitigation >99%. They also gave the biomass and lipid production of 1.300±0.050g/L and 0.356±0.097g/L, respectively. The repeated-batch cultivation improved the biomass and lipid production by 2.66 folds and 1.41 folds, respectively. The scale up in 3L-fluidized bed photobioreactor gave the maximum biomass of 3.280±0.049g/L and lipid production of 0.362±0.010g/L. Fatty acid compositions of Nannochloropsis sp. lipids showed their suitability as biodiesel feedstocks. This system not only contributes as tertiary treatment of industrial effluent and CO mitigation but also low-cost production of renewable energy.
[Mh] Termos MeSH primário: Biodegradação Ambiental
Microalgas
Fotobiorreatores
[Mh] Termos MeSH secundário: Biocombustíveis
Biomassa
Lipídeos
Óleo de Palmeira
Óleos Vegetais
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Biofuels); 0 (Lipids); 0 (Plant Oils); 5QUO05548Z (Palm Oil)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170621
[St] Status:MEDLINE


  10 / 1301 MEDLINE  
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[PMID]:28626137
[Au] Autor:Rozi SKM; Nodeh HR; Kamboh MA; Manan NSA; Mohamad S
[Ad] Endereço:Department of Chemistry, Faculty of Science, University of Malaya.
[Ti] Título:Novel Palm Fatty Acid Functionalized Magnetite Nanoparticles for Magnetic Solid-Phase Extraction of Trace Polycyclic Aromatic Hydrocarbons from Environmental Samples.
[So] Source:J Oleo Sci;66(7):771-784, 2017 Jul 01.
[Is] ISSN:1347-3352
[Cp] País de publicação:Japan
[La] Idioma:eng
[Ab] Resumo:A novel adsorbent, palm fatty acid coated magnetic Fe O nanoparticles (MNP-FA) was successfully synthesized with immobilization of the palm fatty acid onto the surface of MNPs. The successful synthesis of MNP-FA was further confirmed by X-Ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR) and Energy dispersive X-Ray spectroscopy (EDX) analyses and water contact angle (WCA) measurement. This newly synthesized MNP-FA was applied as magnetic solid phase extraction (MSPE) adsorbent for the enrichment of polycyclic aromatic hydrocarbons (PAHs), namely fluoranthene (FLT), pyrene (Pyr), chrysene (Cry) and benzo(a)pyrene (BaP) from environmental samples prior to High Performance Liquid Chromatography- Diode Array Detector (HPLC-DAD) analysis. The MSPE method was optimized by several parameters such as amount of sorbent, desorption solvent, volume of desorption solvent, extraction time, desorption time, pH and sample volume. Under the optimized conditions, MSPE method provided a low detection limit (LOD) for FLT, Pyr, Cry and BaP in the range of 0.01-0.05 ng mL . The PAHs recoveries of the spiked leachate samples ranged from 98.5% to 113.8% with the RSDs (n = 5) ranging from 3.5% to 12.2%, while for the spiked sludge samples, the recoveries ranged from 81.1% to 119.3% with the RSDs (n = 5) ranging from 3.1% to 13.6%. The recyclability study revealed that MNP-FA has excellent reusability up to five times. Chromatrographic analysis demonstrated the suitability of MNP-FA as MSPE adsorbent for the efficient extraction of PAHs from environmental samples.
[Mh] Termos MeSH primário: Poluentes Ambientais/isolamento & purificação
Ácidos Graxos
Nanopartículas de Magnetita
Óleos Vegetais
Hidrocarbonetos Aromáticos Policíclicos/isolamento & purificação
Extração em Fase Sólida/métodos
[Mh] Termos MeSH secundário: Poluentes Ambientais/análise
Óleos de Peixe
Nanopartículas de Magnetita/química
Óleo de Palmeira
Hidrocarbonetos Aromáticos Policíclicos/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Environmental Pollutants); 0 (Fatty Acids); 0 (Fish Oils); 0 (Magnetite Nanoparticles); 0 (Plant Oils); 0 (Polycyclic Aromatic Hydrocarbons); 5QUO05548Z (Palm Oil)
[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:170620
[St] Status:MEDLINE
[do] DOI:10.5650/jos.ess17016



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