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https://www.readbyqxmd.com/read/29667655/novel-magnetic-hollow-zein-nanoparticles-for-preconcentration-of-chlorpyrifos-from-water-and-soil-samples-prior-to-analysis-via-high-performance-liquid-chromatography-hplc
#1
Mojtaba Rahimi Moghadam, Behrooz Zargar, Saadat Rastegarzadeh
Herein, magnetically hollow zein nanoparticles were synthesized and used as a magnetic sorbent for the preconcentration of chlorpyrifos and its analysis by high-performance liquid chromatography (HPLC). Morphology of the sorbent was characterized by transmission electron microscopy (TEM). In this study, the effects of important parameters such as pH of the solution, adsorption and desorption time, type and volume of desorption solvent, and salt addition were investigated. Under optimized experimental conditions, the linear range was from 50 to 2000 μg mL-1, and an LOD of 25 μg L-1 was calculated...
April 18, 2018: Analyst
https://www.readbyqxmd.com/read/29666545/polyphosphates-changes-in-dried-salted-cod-gadus-morhua-during-industrial-and-domestic-processing
#2
Bárbara Teixeira, Helena Vieira, Rogério Mendes
Changes in added polyphosphates throughout the processing of dried salted cod in industrial environment were evaluated. As consumers purchase both dried salted cod and desalted cod, domestic and industrial desalting processes were performed. After brining, total phosphates increased to 11.6 and 16.6 g P2 O5 /kg in cod processed with 3 and 6% of polyphosphates, respectively. During dry-salting, total phosphates decreased in both cases to ca. 5 g P2 O5 /kg, suggesting that most polyphosphates were drained with the water released...
May 2018: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/29665523/revealing-the-microbiota-of-marketed-edible-insects-through-pcr-dgge-metagenomic-sequencing-and-real-time-pcr
#3
Andrea Osimani, Vesna Milanović, Cristiana Garofalo, Federica Cardinali, Andrea Roncolini, Riccardo Sabbatini, Francesca De Filippis, Danilo Ercolini, Claudia Gabucci, Annalisa Petruzzelli, Franco Tonucci, Francesca Clementi, Lucia Aquilanti
The present study aimed to identify the microbiota present in six species of processed edible insects produced in Thailand and marketed worldwide via the internet, namely, giant water bugs (Belostoma lutarium), black ants (Polyrhachis), winged termites (alates, Termitoidae), rhino beetles (Hyboschema contractum), mole crickets (Gryllotalpidae), and silkworm pupae (Bombyx mori). For each species, two samples of boiled, dried and salted insects were purchased. The microbial DNA was extracted from the insect samples and subjected to polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE), high-throughput sequencing and qualitative real-time PCR assays...
April 11, 2018: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29665486/a-kinetic-study-on-the-catalysis-of-kcl-k-2-so-4-and-k-2-co-3-during-oxy-biomass-combustion
#4
Shuanghui Deng, Xuebin Wang, Jiaye Zhang, Zihan Liu, Hrvoje Mikulčić, Milan Vujanović, Houzhang Tan, Neven Duić
Biomass combustion under the oxy-fuel conditions (Oxy-biomass combustion) is one of the approaches achieving negative CO2 emissions. KCl, K2 CO3 and K2 SO4 , as the major potassium species in biomass ash, can catalytically affect biomass combustion. In this paper, the catalysis of the representative potassium salts on oxy-biomass combustion was studied using a thermogravimetric analyzer (TGA). Effects of potassium salt types (KCl, K2 CO3 and K2 SO4 ), loading concentrations (0, 1, 3, 5, 8 wt%), replacing N2 by CO2 , and O2 concentrations (5, 20, 30 vol%) on the catalysis degree were discussed...
April 14, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29665390/synthesis-of-chitosan-derivative-graft-acrylic-acid-superabsorbent-polymers-and-its-application-as-water-retaining-agent
#5
Shixin Fang, Guangjian Wang, Pengcheng Li, Ronge Xing, Song Liu, Yukun Qin, Huahua Yu, Xiaolin Chen, Kecheng Li
A new superabsorbent polymer was synthesized using amino ethyl chitosan and an acrylic acid by a free radical polymerization. The chemical structure of the superabsorbent polymer was characterized using FTIR, TGA, XRD and solid-state 13 C NMR. The results revealed that the acrylic acid was successfully grafted onto the amino ethyl chitosan backbone. As revealed by SEM, a surface with homogeneous and interconnected pore structure was obtained. The influences of different factors (e.g., the initiator, cross-linker and monomer) on the water absorbency of the superabsorbent polymers were investigated...
April 14, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29664686/enhanced-microbial-survivability-in-subzero-brines
#6
Jacob Heinz, Janosch Schirmack, Alessandro Airo, Samuel P Kounaves, Dirk Schulze-Makuch
It is well known that dissolved salts can significantly lower the freezing point of water and thus extend habitability to subzero conditions. However, most investigations thus far have focused on sodium chloride as a solute. In this study, we report on the survivability of the bacterial strain Planococcus halocryophilus in sodium, magnesium, and calcium chloride or perchlorate solutions at temperatures ranging from +25°C to -30°C. In addition, we determined the survival rates of P. halocryophilus when subjected to multiple freeze/thaw cycles...
April 17, 2018: Astrobiology
https://www.readbyqxmd.com/read/29662848/cooking-characteristics-and-antioxidant-activity-of-rice-barley-mix-at-different-cooking-method-and-mixing-ratio
#7
Koan Sik Woo, Hyun-Joo Kim, Ji Hae Lee, Jee Yeon Ko, Byong Won Lee, Byoung Kyu Lee
This study aimed to compare the phenolic compounds and antioxidant activity of barley at different proportion (0, 5, 10, 15, and 20%), and using different cooking methods. The grains used in this experiment are barley ( Hordeum vulgare L. cv. Huinchalssal) and Samkwang rice. The rice-barley mixture was cooked using general and high pressure cooking methods with and without fermented alcohol. The quality characteristics such as water binding capacity, pasting characteristic, water solubility, and swelling power of different proportions of barley were evaluated...
March 2018: Preventive Nutrition and Food Science
https://www.readbyqxmd.com/read/29662160/highly-reversible-zinc-metal-anode-for-aqueous-batteries
#8
Fei Wang, Oleg Borodin, Tao Gao, Xiulin Fan, Wei Sun, Fudong Han, Antonio Faraone, Joseph A Dura, Kang Xu, Chunsheng Wang
Metallic zinc (Zn) has been regarded as an ideal anode material for aqueous batteries because of its high theoretical capacity (820 mA h g-1 ), low potential (-0.762 V versus the standard hydrogen electrode), high abundance, low toxicity and intrinsic safety. However, aqueous Zn chemistry persistently suffers from irreversibility issues, as exemplified by its low coulombic efficiency (CE) and dendrite growth during plating/ stripping, and sustained water consumption. In this work, we demonstrate that an aqueous electrolyte based on Zn and lithium salts at high concentrations is a very effective way to address these issues...
April 16, 2018: Nature Materials
https://www.readbyqxmd.com/read/29661326/superhydrophobic-three-dimensional-porous-ethyl-cellulose-absorbent-with-micro-nano-scale-hierarchical-structures-for-highly-efficient-removal-of-oily-contaminants-from-water
#9
Yeqiang Lu, Weizhong Yuan
The development of efficient absorbent materials is of global importance for oil spillage cleanup and environmental protection. In this work, a novel superhydrophobic micro/nano-scale hierarchical structured ethyl cellulose sponge was successfully fabricated via an eco-friendly salt-templating method followed by immobilizing silver nanoparticles on the surface and subsequent modification with long-chain alkanethiols. The as-prepared sponge with unique micro-nano structure and porous interconnected network exhibited low density (<17 kg m-3 ), high porosity (>98%) and robust superhydrophobicity (θwater  = 161...
July 1, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29660693/the-partial-root-zone-saline-irrigation-system-and-antioxidant-responses-in-tomato-plants
#10
Rita de Cássia Alves, Ana Santana de Medeiros, Mayara Cristina Malvas Nicolau, Antônio Pizolato Neto, Francisco de Assis Oliveira, Leonardo Warzea Lima, Tiago Tezotto, Priscila Lupino Gratão
Salinity is a limiting factor that can affect plant growth and cause significant losses in agricultural productivity. This study provides an insight about the viability of partial root-zone irrigation (PRI) system with saline water supported by a biochemical approach involving antioxidant responses. Six different irrigation methods using low and high salt concentrations (S1-0.5 and S2-5.0 dS m-1 ) were applied, with or without PRSI, so that one side of the root-zone was submitted to saline water while the other side was low salinity water irrigated...
April 6, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29660405/microbiome-mediated-bile-acid-modification-role-in-intestinal-drug-absorption-and-metabolism
#11
REVIEW
Elaine F Enright, Brendan T Griffin, Cormac G M Gahan, Susan A Joyce
Once regarded obscure and underappreciated, the gut microbiota (the microbial communities colonizing the gastrointestinal tract) is gaining recognition as an influencer of many aspects of human health. Also increasingly apparent is the breadth of interindividual variation in these co-evolved microbial-gut associations, presenting novel quests to explore implications for disease and therapeutic response. In this respect, the unearthing of the drug-metabolizing capacity of the microbiota has provided impetus for the integration of microbiological and pharmacological research...
April 13, 2018: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29660100/assessment-of-iodine-nutritional-status-of-school-age-children-in-kolkata-district-of-west-bengal-state-in-post-iodation-scenario
#12
Udayan Bhattacharya, Amar K Chandra
To evaluate the state of iodine nutrition in post-iodation scenario, 3500 children were examined clinically for endemic goitre. Iodine and thiocyanate were measured in 240 urine samples; iodine content in 210 salt samples was measured. Total goitre prevalence was 6.1%. Median urinary iodine level was 21.80 µg/dl, and mean (±SD) urinary thiocyanate was 0.89 ± 0.49 mg/dl. Iodine content of only 11.9% salt samples was below recommended level of 15 ppm, 25.2% was between 15 and 30 ppm and 62.9% was >30 ppm...
April 6, 2018: Journal of Tropical Pediatrics
https://www.readbyqxmd.com/read/29659964/universal-salt-iodization-provides-sufficient-dietary-iodine-to-achieve-adequate-iodine-nutrition-during-the-first-1000-days-a-cross-sectional-multicenter-study
#13
Susanne Dold, Michael B Zimmermann, Tomislav Jukic, Zvonko Kusic, Qingzhen Jia, Zhongna Sang, Antonio Quirino, Teofilo O L San Luis, Ralph Fingerhut, Roland Kupka, Arnold Timmer, Greg S Garrett, Maria Andersson
Background: Dietary iodine requirements are high during pregnancy, lactation, and infancy, making women and infants vulnerable to iodine deficiency. Universal salt iodization (USI) has been remarkably successful for preventing iodine deficiency in the general population, but it is uncertain if USI provides adequate iodine intakes during the first 1000 d. Objective: We set out to assess if USI provides sufficient dietary iodine to meet the iodine requirements and achieve adequate iodine nutrition in all vulnerable population groups...
April 1, 2018: Journal of Nutrition
https://www.readbyqxmd.com/read/29659269/aqueous-processed-high-capacity-electrodes-for-membrane-capacitive-deionization
#14
Amit Jain, Jun Kim, Oluwaseye M Owoseni, Cierra Weathers, Daniel Cana, Kuichang Zuo, William Shane Walker, Qilin Li, Rafael Verduzco
Membrane Capacitive Deionization (MCDI) is a low-cost technology for desalination. Typically, MCDI electrodes are fabricated using a slurry of nanoparticles in an organic solvent along with polyvinylidene fluoride (PVDF) polymeric binder. Recent studies of the environmental impact of CDI have pointed to the use organic solvents in the fabrication of CDI electrodes as key contributors to the overall environmental impact of the technology. Here, we report a scalable, aqueous processing approach to prepare MCDI electrodes using water-soluble polymer polyvinyl alcohol (PVA) as a binder and ion-exchange polymer...
April 16, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29655723/thermal-behavior-of-inosine-5-monophosphate-in-acidic-form-and-as-alkali-and-alkaline-earth-salts
#15
J H F de Jesus, A P G Ferreira, E T G Cavalheiro
Inosine 5'-monophosphate in acidic form and its lithium, potassium, magnesium, calcium, strontium and barium were prepared from the sodium salt, characterized by elemental analysis and Fourier transform infrared spectroscopy and submitted to thermogravimetry (TG), differential thermal analysis (DTA), differential scanning calorimetry (DSC) and thermogravimetry coupled to infrared spectroscopy (TG-FTIR) of the volatile products evolved during heating. All the salts were hydrated containing from 4 to 7.5 H2 O...
August 30, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29653324/phytoremediation-of-mine-tailings-with-atriplex-halimus-and-organic-inorganic-amendments-a-five-year-field-case-study
#16
J A Acosta, A Abbaspour, G R Martínez, S Martínez-Martínez, R Zornoza, M Gabarrón, A Faz
Mine tailings have adverse chemical and physical conditions, including high concentrations of metals and salts, low organic matter content, and unbalanced rates of nutrients which limit the development of vegetation. A large scale field experiment was conducted to reclaim a tailing pond by triggering the growth of native species by spontaneous colonization by tilling (TL) the tailing pond surface and using marble waste (CaCO3 ; MW), pig slurry (PS) and their combination (MW + PS) as soil amendments. Soil physicochemical properties and water and DTPA extractable metal concentrations of bulk and rhizosphere soils were analyzed after five year from the application of the treatments...
April 5, 2018: Chemosphere
https://www.readbyqxmd.com/read/29652884/neochloris-oleoabundans-is-worth-its-salt-transcriptomic-analysis-under-salt-and-nitrogen-stress
#17
Lenny de Jaeger, Benoit M Carreres, Jan Springer, Peter J Schaap, Gerrit Eggink, Vitor A P Martins Dos Santos, Rene H Wijffels, Dirk E Martens
Neochloris oleoabundans is an oleaginous microalgal species that can be cultivated in fresh water as well as salt water. Using salt water gives the opportunity to reduce production costs and the fresh water footprint for large scale cultivation. Production of triacylglycerols (TAG) usually includes a biomass growth phase in nitrogen-replete conditions followed by a TAG accumulation phase under nitrogen-deplete conditions. This is the first report that provides insight in the saline resistance mechanism of a fresh water oleaginous microalgae...
2018: PloS One
https://www.readbyqxmd.com/read/29652680/impact-of-intra-operative-fluid-and-noradrenaline-administration-on-early-postoperative-renal-function-after-cystectomy-and-urinary-diversion-a-retrospective-observational-cohort-study
#18
Marc A Furrer, Marc P Schneider, Lukas M Löffel, Fiona C Burkhard, Patrick Y Wuethrich
BACKGROUND: The use of noradrenaline to enable a restrictive approach to intra-operative fluid therapy to avoid salt and water overload has gained increasing acceptance. However, concerns have been raised about the impact of this approach on renal function. OBJECTIVES: To identify risk factors for acute kidney injury (AKI) in patients undergoing cystectomy with urinary diversion and determine whether administration of noradrenaline and intra-operative hydration regimens affect early postoperative renal function...
April 12, 2018: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/29651942/an-expedient-synthesis-of-cmf-019-s-5-methyl-3-1-pentan-3-yl-2-thiophen-2-ylmethyl-1h-benzo-d-imidazole-5-carboxamido-hexanoic-acid-a-potent-apelin-receptor-apj-agonist
#19
Lena Trifonov, Michal Afri, Krzysztof Palczewski, Edward E Korshin, Arie Gruzman
BACKGROUND: Apelin receptor (APJ) is a G protein-coupled receptor (GPCR) activated by the endogenous peptide apelin. The apelin-APJ system has emerged as an important regulator of cardiovascular homeostasis. Recently, a potent benzimidazole-derived apelin peptidomimetic, CMF-019, was patented but without a comprehensive description of its synthesis and a complete spectroscopic characterization of the intermediates. OBJECTIVE: Here, a detailed preparation of CMF-019 through a modified and improved synthetic pathway is described...
April 12, 2018: Medicinal Chemistry
https://www.readbyqxmd.com/read/29651623/facile-synthesis-of-surface-functionalized-magnetic-nanocomposites-for-effectively-selective-adsorption-of-cationic-dyes
#20
Yani Hua, Juan Xiao, Qinqin Zhang, Chang Cui, Chuan Wang
A new magnetic nano-adsorbent, polycatechol modified Fe3 O4 magnetic nanoparticles (Fe3 O4 /PCC MNPs) were prepared by a facile chemical coprecipitation method using iron salts and catechol solution as precursors. Fe3 O4 /PCC MNPs owned negatively charged surface with oxygen-containing groups and showed a strong adsorption capacity and fast adsorption rates for the removal of cationic dyes in water. The adsorption capacity of methylene blue (MB), cationic turquoise blue GB (GB), malachite green (MG), crystal violet (CV) and cationic pink FG (FG) were 60...
April 12, 2018: Nanoscale Research Letters
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