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https://www.readbyqxmd.com/read/28213255/amperometric-flow-injection-analysis-of-glucose-using-immobilized-glucose-oxidase-on-nano-composite-carbon-nanotubes-platinum-nanoparticles-carbon-paste-electrode
#1
Maliwan Amatatongchai, Wongduan Sroysee, Sanoe Chairam, Duangjai Nacapricha
We report a novel amperometric glucose biosensor based on glucose oxidase (GOx) immobilized on a carbon nanotube (CNTs)-poly(diallyldimethyl-ammonium chloride) (PDDA)-platinum nanoparticle (PtNPs) modified carbon-paste electrode (CNTs-PDDA-PtNPs/CPE). The CNTs-PDDA-PtNPs composite materials were characterized by TEM and electrochemical techniques. Cyclic voltammetric results reveal direct electron transfer of the immobilized GOx, indicated by two quasi-reversible redox peaks at a potential of 0.37V (vs. Ag/AgCl) in phosphate buffered solution (PBS) (0...
May 1, 2017: Talanta
https://www.readbyqxmd.com/read/28212319/a-validated-stability-indicating-hplc-method-for-simultaneous-determination-of-amoxicillin-and-enrofloxacin-combination-in-an-injectable-suspension
#2
Nidal Batrawi, Shorouq Wahdan, Fuad Al-Rimawi
The combination of amoxicillin and enrofloxacin is a well-known mixture of veterinary drugs; it is used for the treatment of Gram-positive and Gram-negative bacteria. In the scientific literature, there is no high-performance liquid chromatography (HPLC)-UV method for the simultaneous determination of this combination. The objective of this work is to develop and validate an HPLC method for the determination of this combination. In this regard, a new, simple and efficient reversed-phase HPLC method for simultaneous qualitative and quantitative determination of amoxicillin and enrofloxacin, in an injectable preparation with a mixture of inactive excipients, has been developed and validated...
February 16, 2017: Scientia Pharmaceutica
https://www.readbyqxmd.com/read/28208090/multi-approach-characterization-of-organic-sediment-produced-by-an-anaerobic-digestion-plant-fed-with-pig-slurry-and-stored-for-a-long-term-in-a-lagoon
#3
Anna Ricci, Luisa Massaccesi, Daniela Pezzolla, Giuseppe Corti, Alberto Agnelli, Giovanni Gigliotti
This study combined different approaches to characterize organic sediments produced by an anaerobic digestion plant feed with pig slurry, and accumulated for many years in a lagoon. The results of all analyses identified a certain homogeneity of the sediments. As a consequence of the pig diet, the sediment contained an high concentration of Zn (about 4gkg(-1)) and Cu (about 1.2gkg(-1)), which were mostly associated to the particles with a size ranging from 2 to 53μm. The sediment was made of large amount of organic matter, mostly cellulose and recalcitrant molecules, and 30-40% mineral fraction...
February 5, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28197590/rats-urinary-metabolomes-reveal-the-potential-roles-of-functional-foods-and-exercise-in-obesity-management
#4
Mohamed A Farag, N M Ammar, T E Kholeif, N S Metwally, N M El-Sheikh, Ludger A Wessjohann, A Z Abdel-Hamid
The complexity of the metabolic changes in obese individuals still presents a challenge for the understanding of obesity-related metabolic disruptions and for obesity management. In this study, a gas chromatography mass spectrometry (GC-MS) based metabolomics approach targeting urine metabolism has been applied to assess the potential roles of functional foods and exercise for obesity management in rats. Male albino rats diagnosed as obese via histopathology and biochemical assays were administered functional foods in common use for obesity management including pomegranate, grapefruit, and red cabbage juice extracts in parallel with swimming exercise...
February 15, 2017: Food & Function
https://www.readbyqxmd.com/read/28188900/isolation-and-identification-of-a-novel-bacterium-lactobacillus-sakei-subsp-dgh-strain-5-and-optimization-of-growth-condition-for-highest-antagonistic-activity
#5
Amin Tashakor, Mahshid Hosseinzadehdehkordi, Zeynab Emruzi, Dariush Gholami
In the present study, we isolated Lactobacillus sakei strain DGH5 from raw beef meat. This bacterium plays an inhibitory effect against food-spoiling bacteria and food-borne pathogens, including Listeria monocytogenes, a gram-positive and pathogenic bacterium. Lactobacillus sakei strain DGH5 was identified through both phenotypical and biochemical tests accompanied with 16S rRNA sequence analysis. Among all the sources of carbon, nitrogen and phosphorous forms, we selected the most potent compounds to optimize the condition for the highest antagonistic activity...
February 8, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28177787/-i-i-sporicidal-efficacy-of-thermal-sprayed-copper-alloy-coating
#6
Romina Shafaghi, Javad Mostaghimi, Valerian Pershin, Maurice Ringuette
Approximately 200,000 Canadians acquire healthcare-associated bacterial infections each year and several-fold more acquire food-borne bacterial illnesses.  Bacterial spores are particularly problematic as they survive several months on surfaces.  Due to its sporicidal activity, copper sheet metal is sometimes used in hospital settings but widespread use is limited by cost and incompatibility with complex furniture/instrument design and topographies.  A potential alternative is the use of thermal spray technology to coat surfaces with copper alloys...
January 19, 2017: Canadian Journal of Microbiology
https://www.readbyqxmd.com/read/28160172/arsenic-uptake-accumulation-and-toxicity-in-rice-plants-possible-remedies-for-its-detoxification-a-review
#7
Hafiz Faiq Bakhat, Zahida Zia, Shah Fahad, Sunaina Abbas, Hafiz Mohkum Hammad, Ahmad Naeem Shahzad, Farhat Abbas, Hesham Alharby, Muhammad Shahid
Arsenic (As) is a toxic metalloid. Serious concerns have been raised in literature owing to its potential toxicity towards living beings. The metalloid causes various water- and food-borne diseases. Among food crops, rice contains the highest concentrations of As. Consuming As-contaminated rice results in serious health issues. Arsenic concentration in rice is governed by various factors in the rhizosphere such as availability and concentration of various mineral nutrients (iron, phosphate, sulfur and silicon) in soil solution, soil oxidation/reduction status, inter-conversion between organic and inorganic As compounds...
February 3, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28139067/the-effects-of-graded-levels-of-calorie-restriction-ix-global-metabolomic-screen-reveals-modulation-of-carnitines-sphingolipids-and-bile-acids-in-the-liver-of-c57bl-6-mice
#8
Cara L Green, Sharon E Mitchell, Davina Derous, Yingchun Wang, Luonan Chen, Jing-Dong J Han, Daniel E L Promislow, David Lusseau, Alex Douglas, John R Speakman
Calorie restriction (CR) remains the most robust intervention to extend lifespan and improve health span. Using a global mass spectrometry-based metabolomic approach, we identified 193 metabolites that were significantly differentially expressed (SDE) in the livers of C57BL/6 mice, fed graded levels of CR (10, 20, 30 and 40% CR) compared to mice fed ad libitum for 12 h a day. The differential expression of metabolites also varied with the different feeding groups. Pathway analysis revealed that graded CR had an impact on carnitine synthesis and the carnitine shuttle pathway, sphingosine-1-phosphate (S1P) signalling and methionine metabolism...
January 31, 2017: Aging Cell
https://www.readbyqxmd.com/read/28130724/management-of-food-and-vegetable-processing-waste-spiked-with-buffalo-waste-using-earthworms-eisenia-fetida
#9
Kavita Sharma, V K Garg
The present investigation was focused on the vermicomposting of food and vegetable processing waste (VW) mixed with buffalo dung (BW) under laboratory condition employing Eisenia fetida earthworm species. Four different proportions of VW and BW were prepared and subjected to vermicomposting after 3 weeks of pre-composting. After vermicomposting, nitrogen (7.82-20.73 g/kg), total available phosphate (4.80-11.74 g/kg) and total potassium (7.43-12.75 g/kg) content increased significantly as compared to initial feed stocks...
January 28, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28130409/reduced-metabolism-in-the-hypothalamus-of-the-anorectic-anx-anx-mouse
#10
Ulrika Bergström, Charlotte Lindfors, Marie Svedberg, Jeanette E Johansen, Jenny Häggkvist, Martin Schalling, Rolf Wibom, Abram Katz, Ida Ak Nilsson
The anorectic anx/anx mouse exhibits a mitochondrial complex I dysfunction that is related to aberrant expression of hypothalamic neuropeptides and transmitters regulating food intake. Hypothalamic activity, i.e. neuronal firing and transmitter release, is dependent on glucose utilization and energy metabolism. To better understand the role of hypothalamic activity in anorexia, we assessed carbohydrate and high energy phosphate metabolism, in vivo and in vitro, in the anx/anx hypothalamus. In the fasted state, hypothalamic glucose uptake in the anx/anx mouse was reduced by ~50% of that seen in wild type (wt) mice (P<0...
January 27, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28124779/a-lactic-acid-bacterium-isolated-from-kimchi-ameliorates-intestinal-inflammation-in-dss-induced-colitis
#11
Jin-Soo Park, Inseong Joe, Paul Daong Rhee, Choon-Soo Jeong, Gajin Jeong
Some species of lactic acid bacteria have been shown to be beneficial in inflammatory bowel disease (IBD). In the present study, a strain of lactic acid bacterium (Lactobacillus paracasei LS2) was isolated from the Korean food, kimchi, and was shown to inhibit the development of experimental colitis induced by dextran sulfate sodium (DSS). To investigate the role of LS2 in IBD, mice were fed DSS in drinking water for seven days along with LS2 bacteria which were administered intragastrically to some of the mice, while phosphate- buffered saline (PBS) was administered to others (the controls)...
January 26, 2017: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/28122364/cariogenic-potential-of-sucrose-associated-with-maltodextrin-on-dental-enamel
#12
Gabriela Rezende, Rodrigo A Arthur, Debora Grando, Lina N Hashizume
Maltodextrin is a hydrolysate of cornstarch and has been widely used in the food industry associated with sucrose. The addition of starch can increase the cariogenic potential of sucrose; however, there are sparse data regarding the cariogenicity of sucrose associated with maltodextrin. Therefore, the aim of this study was to test in situ if maltodextrin could increase the cariogenic potential of sucrose. This was an in situ, randomized, crossover, split-mouth, and double-blind study. Volunteers wore palatal appliances containing bovine enamel blocks for 2 periods of 14 days...
January 26, 2017: Caries Research
https://www.readbyqxmd.com/read/28117705/detoxification-of-aflatoxin-b%C3%A2-by-zygosaccharomyces-rouxii-with-solid-state-fermentation-in-peanut-meal
#13
Guanghui Zhou, Yujie Chen, Qing Kong, Yunxiao Ma, Yang Liu
Aflatoxins are highly carcinogenic, teratogenetic, and morbigenous secondary metabolites of Aspergillus flavus and A. parasiticus that can contaminate multiple staple foods, such as peanut, maize, and tree nuts. In this study, Zygosaccharomyces rouxii was screened out and identified from fermented soy paste-one kind of traditional Chinese food-to detoxify aflatoxin B₁ (AFB₁) by aerobic solid state fermentation in peanut meal. The optimal degradation condition was chosen from single factor experiment, and the most effective detoxification rate was about 97%...
January 20, 2017: Toxins
https://www.readbyqxmd.com/read/28117137/reducing-the-dietary-acid-load-how-a-more-alkaline-diet-benefits-patients-with-chronic-kidney-disease
#14
Caroline Passey
It has been proposed that a low-protein diet will slow progression of chronic kidney disease although studies have not always supported this belief. The accepted practice is that 60% to 70% of protein comes from high biological value (HBV) protein, but this limits patient choice and patients struggle to follow the diet. When a diet with only 30% HBV protein was trialed, there was a significant increase in serum bicarbonate, and patients preferred the diet. The dietary advice given in predialysis clinics was changed...
January 20, 2017: Journal of Renal Nutrition
https://www.readbyqxmd.com/read/28106712/very-low-protein-diet-vlpd-reduces-metabolic-acidosis-in-subjects-with-chronic-kidney-disease-the-nutritional-light-signal-of-the-renal-acid-load
#15
Biagio Raffaele Di Iorio, Lucia Di Micco, Stefania Marzocco, Emanuele De Simone, Antonietta De Blasio, Maria Luisa Sirico, Luca Nardone, On Behalf Of Ubi Study Group
BACKGROUND: Metabolic acidosis is a common complication of chronic kidney disease; current guidelines recommend treatment with alkali if bicarbonate levels are lower than 22 mMol/L. In fact, recent studies have shown that an early administration of alkali reduces progression of CKD. The aim of the study is to evaluate the effect of fruit and vegetables to reduce the acid load in CKD. METHODS: We conducted a case-control study in 146 patients who received sodium bicarbonate...
January 17, 2017: Nutrients
https://www.readbyqxmd.com/read/28105944/gene-expression-profiling-of-flax-linum-usitatissimum-l-under-edaphic-stress
#16
Alexey A Dmitriev, Anna V Kudryavtseva, George S Krasnov, Nadezhda V Koroban, Anna S Speranskaya, Anastasia A Krinitsina, Maxim S Belenikin, Anastasiya V Snezhkina, Asiya F Sadritdinova, Natalya V Kishlyan, Tatiana A Rozhmina, Olga Yu Yurkevich, Olga V Muravenko, Nadezhda L Bolsheva, Nataliya V Melnikova
BACKGROUND: Cultivated flax (Linum usitatissimum L.) is widely used for production of textile, food, chemical and pharmaceutical products. However, various stresses decrease flax production. Search for genes, which are involved in stress response, is necessary for breeding of adaptive cultivars. Imbalanced concentration of nutrient elements in soil decrease flax yields and also results in heritable changes in some flax lines. The appearance of Linum Insertion Sequence 1 (LIS-1) is the most studied modification...
November 16, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/28095770/the-unique-genomic-landscape-surrounding-the-epsps-gene-in-glyphosate-resistant-amaranthus-palmeri-a-repetitive-path-to-resistance
#17
William T Molin, Alice A Wright, Amy Lawton-Rauh, Christopher A Saski
BACKGROUND: The expanding number and global distributions of herbicide resistant weedy species threaten food, fuel, fiber and bioproduct sustainability and agroecosystem longevity. Amongst the most competitive weeds, Amaranthus palmeri S. Wats has rapidly evolved resistance to glyphosate primarily through massive amplification and insertion of the 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) gene across the genome. Increased EPSPS gene copy numbers results in higher titers of the EPSPS enzyme, the target of glyphosate, and confers resistance to glyphosate treatment...
January 17, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28094949/how-high-concentrations-of-proteins-stabilize-the-amorphous-state-of-calcium-orthophosphate-a-solid-state-nuclear-magnetic-resonance-nmr-study-of-the-casein-case
#18
Paulo De Sa Peixoto, Juliana V C Silva, Guillaume Laurent, Marc Schmutz, Daniel Thomas, Antoine Bouchoux, Geneviève Gésan-Guiziou
Understanding how proteins stabilize amorphous calcium ortho-phosphate (ACP) phases is of great importance in biology and for pharmaceutical or food applications. Until now, most of the former investigations about ACP-protein stability and equilibrium were performed under conditions where ACP colloidal nanoclusters are surrounded by low to moderate concentrations of peptides or proteins (15-30 g L(-1)). As a result, the question of ACP-protein interactions in highly concentrated protein systems has clearly been overlooked, whereas it corresponds to actual industrial conditions such as drying or membrane filtration in the dairy industry for instance...
January 30, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28093044/changes-in-biosynthesis-of-exopolysaccharide-in-lactococcus-lactis-subspecies-cremoris-treated-by-moderate-pulsed-electric-field-treatment
#19
Tetsuro Ohba, Kunihiko Uemura, Hiroshi Nabetani
Metabolome analysis and physicochemical analyses were executed with cell extracts of a Lactococcus lactis subspecies cremoris strain treated by moderate pulsed electric field (PEF) to elucidate the mechanism of enhanced production of exopolysaccharide (EPS) by the treatment. Metabolome analysis by capillary electrophoresis time of flight mass spectrometry annotated 224 metabolites from the cytoplasmic extract of the strain, which, however, showed no significant changes in metabolites related to the EPS production...
January 17, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/28087425/variations-of-metabolites-and-proteome-in-lonicera-japonica-thunb-buds-and-flowers-under-uv-radiation
#20
Wei Zhu, Wen Zheng, Xingjiang Hu, Xiaobao Xu, Lin Zhang, Jingkui Tian
Lonicera japonica Thunb., also known as Jin Yin Hua and Japanese honeysuckle, is used as a herbal medicine in Asian countries. Its flowers have been used in folk medicine in the clinic and in making food or healthy beverages for over 1500years in China. To investigate the molecular processes involved in L. japonica development from buds to flowers exposed to UV radiation, a comparative proteomics analysis was performed. Fifty-four proteins were identified as differentially expressed, including 42 that had increased expression and 12 that had decreased expression...
January 10, 2017: Biochimica et Biophysica Acta
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