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https://www.readbyqxmd.com/read/28611790/saccharification-performances-of-miscanthus-at-the-pilot-and-miniaturized-assay-scales-genotype-and-year-variabilities-according-to-the-biomass-composition
#1
Nassim Belmokhtar, Stéphanie Arnoult, Brigitte Chabbert, Jean-Paul Charpentier, Maryse Brancourt-Hulmel
HIGHLIGHTS Biomass production and cell wall composition are differentially impacted by harvesting year and genotypes, influencing then cellulose conversion in miniaturized assay.Using a high-throughput miniaturized and semi-automated method for performing the pretreatment and saccharification steps at laboratory scale allows for the assessment of these factors on the biomass potential for producing bioethanol before moving to the industrial scale. The large genetic diversity of the perennial grass miscanthus makes it suitable for producing cellulosic ethanol in biorefineries...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28552597/vasodilation-effect-of-volatile-oil-from-allium-macrostemon-bunge-are-mediated-by-pka-no-pathway-and-its-constituent-dimethyl-disulfide-in-isolated-rat-pulmonary-arterials
#2
Chenghua Han, Jing Qi, Sainan Gao, Chunxiang Li, Ying Ma, Jing Wang, Yuhua Bai, Xiaodong Zheng
The present study aimed to investigate the vasodilation effects of Allium macrostemon Bunge (AMB) on isolated rat pulmonary arterials (PAs) and to assess the underling mechanisms. The volatile oil was extracted by steam distillation from the bulbs of AMB. Then the volatile oil from AMB was studied on isolated rat PA, removal of endothelium, or pretreatment with nitro oxide (NO) synthase (NOS) inhibitor NG-nitro-L-arginine methyl ester (L-NAME), or with protein kinase A (PKA) inhibitor PKI but not cyclooxygenase inhibitor indomethacin significantly blocked the AMB induced relaxation on PE-contracted PA rings...
May 26, 2017: Fitoterapia
https://www.readbyqxmd.com/read/28527765/lignocellulosic-sugar-management-for-xylitol-and-ethanol-fermentation-with-multiple-cell-recycling-by-kluyveromyces-marxianus-iipe453
#3
Diptarka Dasgupta, Debashish Ghosh, Sheetal Bandhu, Dilip K Adhikari
Optimum utilization of fermentable sugars from lignocellulosic biomass to deliver multiple products under biorefinery concept has been reported in this work. Alcohol fermentation has been carried out with multiple cell recycling of Kluyveromyces marxianus IIPE453. The yeast utilized xylose-rich fraction from acid and steam treated biomass for cell generation and xylitol production with an average yield of 0.315±0.01g/g while the entire glucose rich saccharified fraction had been fermented to ethanol with high productivity of 0...
July 2017: Microbiological Research
https://www.readbyqxmd.com/read/28523905/highly-conductive-porous-transition-metal-dichalcogenides-via-water-steam-etching-for-high-performance-lithium-sulfur-batteries
#4
Zhubing Xiao, Zhi Yang, Liujiang Zhou, Linjie Zhang, Ruihu Wang
Lithium-sulfur (Li-S) batteries show significant advantages for next-generation energy storage systems owing to their high energy density and cost effectiveness. The main challenge in the development of long-life and high-performance Li-S batteries is to simultaneously facilitate the redox kinetics of sulfur species and suppress the shuttle effect of polysulfides. In this contribution, we present a general and green water-steam-etched approach for the fabrication of H- and O-incorporated porous TiS2 (HOPT)...
June 7, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28511543/sterilization-hydration-dehydration-and-tube-fabrication-of-zwitterionic-hydrogels
#5
Xia Han, Hsiang-Chieh Hung, Priyesh Jain, Fang Sun, Xuewei Xu, Wei Yang, Tao Bai, Shaoyi Jiang
Terminal sterilization of hydrogel-based biomaterials is crucial for their clinically relevant applications. The authors synthesized nonfouling zwitterionic hydrogels consisting of carboxybetaine (CB) acrylamide monomer and a carboxybetaine dimethacrylate crosslinker. The mechanical and biological stability of nonfouling hydrogels were investigated using three main terminal sterilization techniques, i.e., steam autoclave, ethylene oxide gas, and gamma irradiation. It was found that CB hydrogels are very stable at high temperature and pressure and in oxidative gas environments without changing their stress, modulus, and nonfouling properties...
May 16, 2017: Biointerphases
https://www.readbyqxmd.com/read/28508770/romuald-w%C3%A4-g%C3%A5-owski-1876-1935-orthopaedic-surgeon-forgotten-pioneer-of-limb-saving-tumour-surgery
#6
Marek Durakiewicz, Mirosław Jabłoński, Aneta Zarębska
On May 16, 1914, The Lancet Journal published a paper by Romuald Węgłowski, a Polish-born professor of Moscow University, entitled "Malignant tumours of bones: a new method in conservative operative treatment." The idea of biological resection presented in the paper consisted in thermocoagulation of the apparently cancerous part of a bone with a jet of steam. According to the author, dead bone rid of live malignant cells reconstructed itself quickly, which helped to preserve the functionality of the organ without considerable limitations...
April 12, 2017: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28500891/steam-exploded-biomass-saccharification-is-predominately-affected-by-lignocellulose-porosity-and-largely-enhanced-by-tween-80-in-miscanthus
#7
Dan Sun, Aftab Alam, Yuanyuan Tu, Shiguang Zhou, Yanting Wang, Tao Xia, Jiangfeng Huang, Ying Li, Zahoor, Xiaoyang Wei, Bo Hao, Liangcai Peng
In this study, total ten Miscanthus accessions exhibited diverse cell wall compositions, leading to largely varied hexoses yields at 17%-40% (% cellulose) released from direct enzymatic hydrolysis of steam-exploded (SE) residues. Further supplied with 2% Tween-80 into the enzymatic digestion, the Mis7 accession showed the higher hexose yield by 14.8-fold than that of raw material, whereas the Mis10 had the highest hexoses yield at 77% among ten Miscanthus accessions. Significantly, this study identified four wall polymer features that negatively affect biomass saccharification as p<0...
September 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28498852/ultra-high-field-7tesla-magnetic-resonance-spectroscopy-in-amyotrophic-lateral-sclerosis
#8
Nazem Atassi, Maosheng Xu, Christina Triantafyllou, Boris Keil, Robert Lawson, Paul Cernasov, Elena Ratti, Christopher J Long, Sabrina Paganoni, Alyssa Murphy, Nouha Salibi, Ravi Seethamraju, Bruce Rosen, Eva-Maria Ratai
The main objective of this study was to utilize high field (7T) in vivo proton magnetic resonance imaging to increase the ability to detect metabolite changes in people with ALS, specifically, to quantify levels of glutamine and glutamine separately. The second objective of this study was to correlate metabolic markers with clinical outcomes of disease progression. 13 ALS participants and 12 age-matched healthy controls (HC) underwent 7 Tesla MRI and MRS. Single voxel MR spectra were acquired from the left precentral gyrus using a very short echo time (TE = 5 ms) STEAM sequence...
2017: PloS One
https://www.readbyqxmd.com/read/28490089/molecular-structure-stability-and-cytotoxicity-of-natural-green-colorants-produced-from-centella-asiatica-l-leaves-treated-by-steaming-and-metal-complexations
#9
Luxsika Ngamwonglumlert, Sakamon Devahastin, Naphaporn Chiewchan
Stability of extracts from Centella asiatica L. leaves treated by steaming and metal-chlorophylls complexations against combined acid-heat was compared with that from untreated leaves and synthetic colorant. Formation of metal-chlorophylls complexes was confirmed by FTIR spectroscopy. Molecular structure changes during stability test and cytotoxicity of the extracts against Vero cells were evaluated. Utilization of the extracts as colorant was also assessed in selected beverage ingredient and food. Copper-chlorophylls extracts exhibited similar green hue to those from untreated and steamed leaves, while zinc-chlorophylls extracts exhibited yellow-green color...
October 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28462130/water-extract-of-galla-rhois-with-steaming-process-enhances-apoptotic-cell-death-in-human-colon-cancer-cells
#10
Nam-Hui Yim, Min Jung Gu, Youn-Hwan Hwang, Won-Kyung Cho, Jin Yeul Ma
BACKGROUND: Galla Rhois has been considered to have medicinal properties against diarrhea, excessive sweating, bleeding, and chronic cough in Asian countries. Gallotannins, which are Galla Rhois-derived tannins, have been reported to possess biological and pharmacological activities, especially anticancer activity. In this study, we evaluated the effect of steaming at a temperature over 120 °C on the chemical constituents and biological activities of the water extract of Galla Rhois (GRE)...
December 2016: Integrative medicine research
https://www.readbyqxmd.com/read/28423891/effective-thermal-inactivation-of-the-spores-of-bacillus-cereus-biofilms-using-microwave
#11
Hyong Seok Park, Jungwoo Yang, Hee Jung Choi, Kyoung Heon Kim
Microwave sterilization was performed to inactivate the spores of biofilms of Bacillus cereus involved in foodborne illness. The sterilization conditions, such as the amount of water biofilms were immersed in, temperature, and treatment time, were optimized after 15 runs based on the Box-Behnken design. The sterilization conditions, such as the amount of water and the operating temperature and treatment time were optimized using statistical analysis based on 15 runs experimental results designed by the Box- Behnken method...
April 20, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28416967/rescuing-ethanol-photosynthetic-production-of-cyanobacteria-in-non-sterilized-outdoor-cultivations-with-a-bicarbonate-based-ph-rising-strategy
#12
Zhi Zhu, Guodong Luan, Xiaoming Tan, Haocui Zhang, Xuefeng Lu
BACKGROUND: Ethanol photosynthetic production based on cyanobacteria cell factories utilizing CO2 and solar energy provides an attractive solution for sustainable production of green fuels. However, the scaling up processes of cyanobacteria cell factories were usually threatened or even devastated by biocontaminations, which restricted biomass or products accumulations of cyanobacteria cells. Thus it is of great significance to develop reliable biocontamination-controlling strategies for promoting ethanol photosynthetic production in large scales...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28413314/implications-of-red-panax-ginseng-in-oxidative-stress-associated-chronic-diseases
#13
REVIEW
Yoon-Mi Lee, Haelim Yoon, Hyun-Min Park, Byeng Chun Song, Kyung-Jin Yeum
The steaming process of Panax ginseng has been reported to increase its major known bioactive components, ginsenosides, and, therefore, its biological properties as compared to regular Panax ginseng. Biological functions of red Panax ginseng attenuating pro-oxidant environments associated with chronic diseases are of particular interest, since oxidative stress can be a key contributor to the pathogenesis of chronic diseases. Additionally, proper utilization of various biomarkers for evaluating antioxidant activities in natural products, such as ginseng, can also be important to providing validity to their activities...
April 2017: Journal of Ginseng Research
https://www.readbyqxmd.com/read/28380543/effect-of-pelleting-on-survival-of-porcine-epidemic-diarrhea-virus-contaminated-feed
#14
R A Cochrane, L L Schumacher, S S Dritz, J C Woodworth, A R Huss, C R Stark, J M DeRouchey, M D Tokach, R D Goodband, J Bia, Q Chen, J Zhang, P C Gauger, R J Derscheid, D R Magstadt, R G Main, C K Jones
Porcine epidemic diarrhea virus (PEDV) is a heat-sensitive virus that has devastated the U.S. swine industry. Because of its heat sensitivity, we hypothesized that a steam conditioner and pellet mill mimicking traditional commercial thermal processing may mitigate PEDV infectivity. Pelleting, a common feed processing method, includes the use of steam and shear forces, resulting in increased temperature of the processed feed. Two thermal processing experiments were designed to determine if different pellet mill conditioner retention times and temperatures would impact PEDV quantity and infectivity by analysis of quantitative reverse transcription PCR and bioassay...
March 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28365338/on-a-clean-power-generation-system-with-the-co-gasification-of-biomass-and-coal-in-a-quadruple-fluidized-bed-gasifier
#15
Linbo Yan, Boshu He
A clean power generation system was built based on the steam co-gasification of biomass and coal in a quadruple fluidized bed gasifier. The chemical looping with oxygen uncoupling technology was used to supply oxygen for the calciner. The solid oxide fuel cell and the steam turbine were combined to generate power. The calcium looping and mineral carbonation were used for CO2 capture and sequestration. The aim of this work was to study the characteristics of this system. The effects of key operation parameters on the system total energy efficiency (ŋten), total exergy efficiency (ŋtex) and carbon sequestration rate (Rcs) were detected...
July 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28355552/energy-transfer-mechanisms-during-molecular-delivery-to-cells-by-laser-activated-carbon-nanoparticles
#16
Aritra Sengupta, Michael D Gray, Sean C Kelly, Stefany Y Holguin, Naresh N Thadhani, Mark R Prausnitz
Previous studies have shown that exposure of carbon black nanoparticles to nanosecond pulsed near-infrared laser causes intracellular delivery of molecules through hypothesized transient breaks in the cell membrane. The goal of this study is to determine the underlying mechanisms of sequential energy transfer from laser light to nanoparticle to fluid medium to cell. We found that laser pulses on a timescale of 10 ns rapidly heat carbon nanoparticles to temperatures on the order of 1200 K. Heat is transferred from the nanoparticles to the surrounding aqueous medium on a similar timescale, causing vaporization of the surrounding water and generation of acoustic emissions...
March 28, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28337143/anti-adipogenic-effects-and-mechanisms-of-ginsenoside-rg3-in-pre-adipocytes-and-obese-mice
#17
Longyun Zhang, Lijuan Zhang, Xiaoyong Wang, Hongwei Si
Red or black ginseng has been reported more powerful than white/fresh ginseng in dealing with various diseases/conditions including obesity. The major reason is that heating/steaming, the process of making red or black ginseng, produces large amount of bioactive compounds including ginsenoside Rg3 (Rg3), which are trace in fresh or white ginseng. In the present study, Rg3 was applied both in pre-adipocytes and obese mice to investigate the anti-adipogenic effects and relevant mechanisms. Our results show that Rg3 dose-dependently inhibited cell differentiation both in 3T3-L1 cells (30, 50, and 100 μM) and human primary pre-adipocytes (10, 20, and 30 μM)...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28329760/low-temperature-hydrogen-production-from-water-and-methanol-using-pt-%C3%AE-moc-catalysts
#18
Lili Lin, Wu Zhou, Rui Gao, Siyu Yao, Xiao Zhang, Wenqian Xu, Shijian Zheng, Zheng Jiang, Qiaolin Yu, Yong-Wang Li, Chuan Shi, Xiao-Dong Wen, Ding Ma
Polymer electrolyte membrane fuel cells (PEMFCs) running on hydrogen are attractive alternative power supplies for a range of applications, with in situ release of the required hydrogen from a stable liquid offering one way of ensuring its safe storage and transportation before use. The use of methanol is particularly interesting in this regard, because it is inexpensive and can reform itself with water to release hydrogen with a high gravimetric density of 18.8 per cent by weight. But traditional reforming of methanol steam operates at relatively high temperatures (200-350 degrees Celsius), so the focus for vehicle and portable PEMFC applications has been on aqueous-phase reforming of methanol (APRM)...
April 6, 2017: Nature
https://www.readbyqxmd.com/read/28294235/steam-reforming-of-methanol-over-oxide-decorated-nanoporous-gold-catalysts-a-combined-in-situ-ftir-and-flow-reactor-study
#19
J Shi, C Mahr, M M Murshed, T M Gesing, A Rosenauer, M Bäumer, A Wittstock
Methanol as a green and renewable resource can be used to generate hydrogen by reforming, i.e., its catalytic oxidation with water. In combination with a fuel cell this hydrogen can be converted into electrical energy, a favorable concept, in particular for mobile applications. Its realization requires the development of novel types of structured catalysts, applicable in small scale reactor designs. Here, three different types of such catalysts were investigated for the steam reforming of methanol (SRM). Oxides such as TiO2 and CeO2 and mixtures thereof (Ce1Ti2Ox) were deposited inside a bulk nanoporous gold (npAu) material using wet chemical impregnation procedures...
March 15, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28284229/influence-of-temperature-fluctuations-during-cryopreservation-on-vital-parameters-differentiation-potential-and-transgene-expression-of-placental-multipotent-stromal-cells
#20
Denys Pogozhykh, Olena Pogozhykh, Volodymyr Prokopyuk, Larisa Kuleshova, Anatoliy Goltsev, Rainer Blasczyk, Thomas Mueller
BACKGROUND: Successful implementation of rapidly advancing regenerative medicine approaches has led to high demand for readily available cellular suspensions. In particular, multipotent stromal cells (MSCs) of placental origin have shown therapeutic efficiency in the treatment of numerous pathologies of varied etiology. Up to now, cryopreservation is the only effective way to preserve the viability and unique properties of such cells in the long term. However, practical biobanking is often associated with repeated temperature fluctuations or interruption of a cold chain due to various technical, transportation, and stocking events...
March 11, 2017: Stem Cell Research & Therapy
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