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https://www.readbyqxmd.com/read/28102295/bioactive-compounds-and-antioxidant-activity-of-wolfberry-infusion
#1
Yujing Sun, Japaer Rukeya, Wenyang Tao, Peilong Sun, Xingqian Ye
An infusion of the wolfberry (Lycium barbarum L.) is a traditional Asian herbal tea. This is the most commonly consumed form of dried wolfberry worldwide, yet little scientific information on wolfberry infusions is available. We investigated the effects of making infusions with hot water on the color, the content of bioactive compounds (polysaccharides, polyphenols, flavonoids and carotenoids) and the antioxidant ability of wolfberry infusions. The contents of bioactive compounds and the antioxidant activity of a wolfberry infusion increased with increased infusion temperature and time...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28102290/wells-provide-a-distorted-view-of-life-in-the-aquifer-implications-for-sampling-monitoring-and-assessment-of-groundwater-ecosystems
#2
Kathryn Korbel, Anthony Chariton, Sarah Stephenson, Paul Greenfield, Grant C Hose
When compared to surface ecosystems, groundwater sampling has unique constraints, including limited access to ecosystems through wells. In order to monitor groundwater, a detailed understanding of groundwater biota and what biological sampling of wells truly reflects, is paramount. This study aims to address this uncertainty, comparing the composition of biota in groundwater wells prior to and after purging, with samples collected prior to purging reflecting a potentially artificial environment and samples collected after purging representing the surrounding aquifer...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28101712/herbicides-and-trace-metals-in-urban-waters-in-melbourne-australia-2011-12-concentrations-and-potential-impact
#3
Mayumi Allinson, Pei Zhang, AnhDuyen Bui, Jackie H Myers, Vincent Pettigrove, Gavin Rose, Scott A Salzman, Robert Walters, Graeme Allinson
Urban stormwater samples were collected from five aquatic systems in Melbourne, Australia, on six occasions between October 2011 and March 2012 and tested for 30 herbicides and 14 trace metals. Nineteen different herbicides were observed in one or more water samples from the five sites; chemicals observed at more than 40% of sites were simazine (100%), MCPA (83%), diuron (63%) and atrazine (53%). Using the toxicity unit (TU) concept to assess potential risk to aquatic ecosystems, none of the detected herbicides were considered to pose an individual, group or collective short-term risk to fish or zooplankton in the waters studied...
January 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28100054/efficacy-of-silver-hydrophilic-poly-p-xylylene-on-preventing-bacterial-growth-and-biofilm-formation-in-urinary-catheters
#4
Hamideh Heidari Zare, Viktorija Juhart, Attila Vass, Gerhard Franz, Dieter Jocham
Catheter associated urinary tract infections (CAUTI), caused by several strains of bacteria, are a common complication for catheterized patients. This may eventually lead to a blockage of the catheter due to the formation of a crystalline or amorphous biofilm. Inhibiting bacteria should result in a longer application time free of complaints. This issue has been investigated using an innovative type of silver-coated catheter with a semipermeable cap layer to prevent CAUTI. In this work, two different types of silver catheters were investigated, both of which were capped with poly(p-xylylene) (PPX-N) and exhibited different surface properties that completely changed their wetting conduct with water...
January 18, 2017: Biointerphases
https://www.readbyqxmd.com/read/28099965/pilot-test-of-a-new-personal-health-system-integrating-environmental-and-wearable-sensors-for-telemonitoring-and-care-of-elderly-people-at-home-smarta-project
#5
Lucia Pigini, Gabriele Bovi, Claudia Panzarino, Valerio Gower, Maurizio Ferratini, Giuseppe Andreoni, Roberto Sassi, Massimo W Rivolta, Maurizio Ferrarin
BACKGROUND: The increase in life expectancy is accompanied by a growing number of elderly subjects affected by chronic comorbidities, a health issue which also implies important socioeconomic consequences. Shifting from hospital or community dwelling care towards a home personalized healthcare paradigm would promote active aging with a better quality of life, along with a reduction in healthcare-related costs. OBJECTIVE: The aim of the SMARTA project was to develop and test an innovative personal health system integrating standard sensors as well as innovative wearable and environmental sensors to allow home telemonitoring of vital parameters and detection of anomalies in daily activities, thus supporting active aging through remote healthcare...
January 19, 2017: Gerontology
https://www.readbyqxmd.com/read/28099871/fluoride-and-arsenic-exposure-affects-spatial-memory-and-activates-the-erk-creb-signaling-pathway-in-offspring-rats
#6
Yu-Peng Zhu, Shu-Hua Xi, Ming-Yan Li, Ting-Ting Ding, Nan Liu, Fu-Yuan Cao, Yang Zeng, Xiao-Jing Liu, Jun-Wang Tong, Shou-Fang Jiang
Fluoride and arsenic are inorganic contaminants that occur in the natural environment. Chronic fluoride and/or arsenic exposure can induce developmental neurotoxicity and negatively influence intelligence in children, although the underlying molecular mechanisms are poorly understood. This study explored the effects of fluoride and arsenic exposure in drinking water on spatial learning, memory and key protein expression in the ERK/CREB signaling pathway in hippocampal and cerebral cortex tissue in rat offspring...
January 15, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28097927/assessment-and-comparison-of-three-high-aluminum-fly-ash-utilization-scenarios-in-inner-mongolia-china-using-an-eco-efficiency-indicator
#7
Shuo Yang, Ling Lin, Shao Peng Li, Qiang Li, Xiu Teng Wang, Liang Sun
Utilization of fly ash is of great importance in China in the context of resource and environmental crises. Different fly ash utilization processes are proposed, and some have been practically applied. However, none of these fly ash utilization pathways has been evaluated comprehensively by integrating both environmental and economic perspectives. In this study, three high-aluminum fly ash utilization methods in Mongolia were assessed and compared based on the concept of eco-efficiency. The environmental assessment was conducted in accordance with life-cycle assessment principles, and a monetization-weighting approach was applied to obtain social willingness-to-pay as a reflection of environmental impact...
January 1, 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28097920/extending-the-life-cycle-of-reverse-osmosis-membranes-a-review
#8
Eduardo Coutinho de Paula, Míriam Cristina Santos Amaral
The reverse osmosis (RO) technology for desalination and demineralization serves the global water crisis context, both technically and economically, and its market is growing. However, RO membranes have a limited life-cycle and are often disposed of in landfills. The impacts caused by the disposal of thousands of tonnes per annum of RO membranes have grown dramatically around the world. Waste prevention should have a high priority and take effect before the end-of-life phase of a product is reached. In this review, a summary is presented of the main advances in the performance of the RO technology and the membrane lifespan...
January 1, 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28097217/amylose-recognition-and-ring-size-determination-of-amylomaltase
#9
Christian Roth, Nicole Weizenmann, Nicola Bexten, Wolfram Saenger, Wolfgang Zimmermann, Timm Maier, Norbert Sträter
Starch is a major carbon and energy source throughout all kingdoms of life. It consists of two carbohydrate polymers, branched amylopectin and linear amylose, which are sparingly soluble in water. Hence, the enzymatic breakdown by glycoside hydrolases (GHs) is of great biological and societal importance. Amylomaltases (AMs) are GHs specialized in the hydrolysis of α-1,4-linked sugar chains such as amylose. They are able to catalyze an intramolecular transglycosylation of a bound sugar chain yielding polymeric sugar rings, the cycloamyloses (CAs), consisting of 20 to 100 glucose units...
January 2017: Science Advances
https://www.readbyqxmd.com/read/28097073/handling-stress-may-confound-murine-gut-microbiota-studies
#10
Cary R Allen-Blevins, Xiaomeng You, Katie Hinde, David A Sela
BACKGROUND: Accumulating evidence indicates interactions between human milk composition, particularly sugars (human milk oligosaccharides or HMO), the gut microbiota of human infants, and behavioral effects. Some HMO secreted in human milk are unable to be endogenously digested by the human infant but are able to be metabolized by certain species of gut microbiota, including Bifidobacterium longum subsp. infantis (B. infantis), a species sensitive to host stress (Bailey & Coe, 2004). Exposure to gut bacteria like B...
2017: PeerJ
https://www.readbyqxmd.com/read/28097066/henricia-djakonovi-sp-nov-echinodermata-echinasteridae-a-new-sea-star-species-from-the-sea-of-japan
#11
Anton Chichvarkhin
A new sea star species, H. djakonovi sp.n., was discovered in Rudnaya Bay in the Sea of Japan. This is a sympatric species of the well-known and common species Henricia pseudoleviuscula Djakonov, 1958. Both species are similar in body size and proportions, shape of skeletal plates, and life coloration, which distinguishes them from the other Henricia species inhabiting the Sea of Japan. Nevertheless, these species can be distinguished by their abactinal spines: in both species, they are short and barrel-like, but the new species is the only Henricia species in Russian waters of the Pacific that possesses such spines with a massive, smooth, bullet-like tip...
2017: PeerJ
https://www.readbyqxmd.com/read/28096605/molecular-and-epidemiological-updates-on-cystic-echinococcosis-infecting-water-buffaloes-from-egypt
#12
Ibrahim Abbas
AIM: Cystic echinococcosis (CE) represents a serious parasitic disease at both animal and public health levels. The majority of reports negated the CE infection in buffaloes from Egypt; however, one study illustrated their infection with G6 genotype (camel strain). The present work contributed to update the epidemiological and molecular knowledge about CE infecting this economically important animal for better understanding of its role in maintaining the Echinococcus life cycle. MATERIALS AND METHODS: A total of 120 slaughtered water buffaloes at Mansoura abattoir, Dakahlia province, Egypt, were inspected for the existence of hydatid cysts...
December 2016: Veterinary World
https://www.readbyqxmd.com/read/28096368/elemental-sulfur-aerosol-forming-mechanism
#13
Manoj Kumar, Joseph S Francisco
Elemental sulfur aerosols are ubiquitous in the atmospheres of Venus, ancient Earth, and Mars. There is now an evolving body of evidence suggesting that these aerosols have also played a role in the evolution of early life on Earth. However, the exact details of their formation mechanism remain an open question. The present theoretical calculations suggest a chemical mechanism that takes advantage of the interaction between sulfur oxides, SOn (n = 1, 2, 3) and hydrogen sulfide (nH2S), resulting in the efficient formation of a Sn+1 particle...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28095698/evaluation-of-the-coupled-two-dimensional-main-chain-torsional-potential-in-modeling-intrinsically-disordered-proteins
#14
Ya Gao, Chaomin Zhang, John Z H Zhang, Ye Mei
Intrinsically Disordered Proteins (IDPs) carry out crucial biological functions in essential biological processes of life. Due to the highly dynamic and conformationally heterogeneous nature of the disordered states of IDPs, molecular dynamics simulations are becoming an indispensable tool for the investigation of the conformational ensembles and dynamic properties of IDPs. Nevertheless, there is still no consensus on the most reliable force field in molecular dynamics simulations for IDPs hitherto. In this work, a recently proposed AMBER99SB2D force field is evaluated in modeling some disordered polypeptides and proteins by checking its ability in reproducing NMR experimental data...
January 18, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/28095310/ilex-paraguariensis-supplementation-may-be-an-effective-nutritional-approach-to-modulate-oxidative-stress-during-perimenopause
#15
Ariana Aparecida Ferreira Pereira, Keny Gonçalves Tirapeli, Antonio Hernandes Chaves Neto, Matheus da Silva Brasilino, Cláudia Quintino da Rocha, Adriane Belló-Klein, Suzana Francisca Llesuy, Rita Cássia Menegati Dornelles, Ana Cláudia de Melo Stevanato Nakamune
Perimenopause is a period in a woman's life that precedes menopause and is characterized by hormonal changes that results in increased oxidative stress. Since oxidative stress is associated with age-related diseases and perimenopausal symptoms including somato-vegetative manifestations, nutritional antioxidant supplementation may be an effective approach to minimizing this stress. Mate tea (MT) (Ilex paraguariensis), a typical and inexpensive beverage consumed in the Brazilian south-east, Argentina and Uruguay, increases antioxidant defense...
January 14, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28092006/the-efficiency-of-eichhornia-crassipes-in-the-removal-of-organic-and-inorganic-pollutants-from-wastewater-a-review
#16
Saurabh Mishra, Abhijit Maiti
Water is a basic necessity of life, but due to overextraction and heavy input of nutrients from domestic and industrial sources, the contamination level of water bodies increase. In the last few decades, a potential interest has been aroused to treat wastewater by biological methodologies before discharge into the natural water bodies. Phytoremediation using water hyacinth is found to be an effective biological wastewater treatment method. Water hyacinth (Eichhornia crassipes), a notorious weed, being the most promising plant for removal of contaminants from wastewater is studied extensively in this regard...
January 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28091790/chemically-modified-surface-functional-groups-of-alcaligenes-sp-s-xj-1-to-enhance-its-demulsifying-capability
#17
Yuyan Zhang, Jia Liu, Xiangfeng Huang, Lijun Lu, Kaiming Peng
Cell-surface functional groups (amino, carboxyl, hydroxyl, as well as phosphate) were chemically modified in various ways to enhance the demulsification capability of the demulsifying bacteria Alcaligenes sp. S-XJ-1. Results demonstrated that the demulsifying activity was significantly inhibited by amino enrichment with cetyl trimethyl ammonium bromide, amino methylation, hydroxyl acetylation, and phosphate esterification, but was gradually promoted by carboxyl blocking with increasing the extents of esterification...
January 14, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28089203/carbon-footprint-and-energy-use-of-food-waste-management-options-for-fresh-fruit-and-vegetables-from-supermarkets
#18
Mattias Eriksson, Johanna Spångberg
Food waste is a problem with economic, environmental and social implications, making it both important and complex. Previous studies have addressed food waste management options at the less prioritised end of the waste hierarchy, but information on more prioritised levels is also needed when selecting the best available waste management options. Investigating the global warming potential and primary energy use of different waste management options offers a limited perspective, but is still important for validating impacts from the waste hierarchy in a local context...
January 11, 2017: Waste Management
https://www.readbyqxmd.com/read/28088851/monitoring-the-reaction-process-during-the-s2%C3%A2-s3-transition-in-photosynthetic-water-oxidation-using-time-resolve-infrared-spectroscopy
#19
Hiroki Sakamoto, Tatsuki Shimizu, Ryo Nagao, Takumi Noguchi
Photosynthetic water oxidation performed at the Mn4CaO5 cluster in photosystem II plays a crucial role in energy production as electron and proton sources necessary for CO2 fixation. Molecular oxygen, a byproduct, is a source of the oxygenic atmosphere that sustains life on earth. However, the molecular mechanism of water oxidation is not yet well understood. In the reaction cycle of intermediates called S states, the S2→S3 transition is particularly important; it consists of multiple processes of electron transfer, proton release, and water insertion, and generates an intermediate leading to O-O bond formation...
January 16, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28088675/involvement-of-water-channel-aquaporin-5-in-h2s-induced-pulmonary-edema
#20
Chunyang Xu, Lei Jiang, Yuxia Zou, Jingjing Xing, Hao Sun, Baoli Zhu, Hengdong Zhang, Jun Wang, Jinsong Zhang
Acute exposure to hydrogen sulfide (H2S) poses a significant threat to life, and the lung is one of the primary target organs of H2S. However, the mechanisms involved in H2S-induced acute pulmonary edema are poorly understood. This study aims to investigate the effects of H2S on the expression of water channel aquaporin 5 (AQP5) and to elucidate the signaling pathways involved in AQP5 regulation. In an in vivo study, C57BL6 mice were exposed to sub-lethal concentrations of inhaled H2S, and histological injury of the lungs and ultrastructure injury of the epithelial cells were evaluated...
December 30, 2016: Environmental Toxicology and Pharmacology
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