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https://www.readbyqxmd.com/read/28330314/bioremediation-of-heavy-metals-using-an-endophytic-bacterium-paenibacillus-sp-rm-isolated-from-the-roots-of-tridax-procumbens
#1
M Govarthanan, R Mythili, T Selvankumar, S Kamala-Kannan, A Rajasekar, Young-Cheol Chang
The aim of the present study was to assess the bioremediation potential of endophytic bacteria isolated from roots of Tridax procumbens plant. Five bacterial endophytes were isolated and subsequently tested for minimal inhibitory concentration (MIC) against different heavy metals. Amongst the five isolates, strain RM exhibited the highest resistance to copper (750 mg/l), followed by zinc (500 mg/l), lead (450 mg/l), and arsenic (400 mg/l). Phylogenetic analysis of the 16S rDNA sequence suggested that strain RM was a member of genus Paneibacillus...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330295/biomass-derived-molecules-modulate-the-behavior-of-streptomyces-coelicolor-for-antibiotic-production
#2
Shashi Kant Bhatia, Bo-Rahm Lee, Ganesan Sathiyanarayanan, Hun Seok Song, Junyoung Kim, Jong-Min Jeon, Jeong-Jun Yoon, Jungoh Ahn, Kyungmoon Park, Yung-Hun Yang
Various chemicals, i.e., furfural, vanillin, 4-hydroxybenzaldehyde and acetate produced during the pretreatment of biomass affect microbial fermentation. In this study, effect of vanillin, 4-hydroxybenzaldehyde and acetate on antibiotic production in Streptomyces coelicolor is investigated. IC 50 value of vanillin, 4-hydroxybenzaldehyde and acetate was recorded as 5, 11.3 and 115 mM, respectively. Vanillin was found as a very effective molecule, and it completely abolished antibiotic (undecylprodigiosin and actinorhodin) production at 1 mM concentration, while 4-hydroxybenzaldehyde and acetate have little effect...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330281/evaluation-of-bioactive-secondary-metabolites-from-endophytic-fungus-pestalotiopsis-neglecta-bab-5510-isolated-from-leaves-of-cupressus-torulosa-d-don
#3
Deeksha Sharma, Avijit Pramanik, Pavan Kumar Agrawal
Six endophytic fungi were isolated from Cupressus torulosa D.Don and identified phenotypically and genotypically. The fungal cultures were further grown and the culture was extracted by two organic solvents methanol and ethyl acetate. The screening was carried out using the agar well diffusion method against human pathogen such as Escherichia coli, Salmonella typhimurium, Bacillus subtilis and Staphylococcus aureus. Isolated strain of Pestalotiopsis sp. was showing prominent antibacterial activity. The crude methanol and ethyl acetate extract of Pestalotiopsis sp...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330203/evaluation-of-several-ionic-liquids-for-in-situ-hydrolysis-of-empty-fruit-bunches-by-locally-produced-cellulase
#4
Amal Ahmed Elgharbawy, Md Zahangir Alam, Nassereldeen Ahmad Kabbashi, Muhammad Moniruzzaman, Parveen Jamal
Lignocellulosic biomasses, exhibit resistance to enzymatic hydrolysis due to the presence of lignin and hemicellulose. Ionic liquids proved their applicability in lignin degradation, however, ionic liquid removal has to be performed to proceed to hydrolysis. Therefore, this study reports an in situ hydrolysis of empty fruit bunches (EFB) that combined an ionic liquid (IL) pretreatment and enzymatic hydrolysis. For enzyme production, palm kernel cake (PKC) was used as the primary media for microbial cellulase (PKC-Cel) from Trichoderma reesei (RUTC30)...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330202/impact-of-various-media-and-organic-carbon-sources-on-biofuel-production-potential-from-chlorella-spp
#5
Amit Kumar Sharma, Pradeepta Kumar Sahoo, Shailey Singhal, Alok Patel
In this study, five Chlorella species (Chlorella vulgaris, Chlorella minutissima, Chlorella pyrenoidosa, Chlorella sp.1 and Chlorella sp.2) were grown in various nutrient medium including BG-11, BBM, Fog's medium and M4N medium for the evolution of biomass and lipid production potential. Among the tested medium, BG-11 was found most economical and efficient medium for all Chlorella species. To see the impact of organic carbon sources on lipid production potential, all microalgae species were also cultured in selected medium (BG-11) with different organic carbon sources like glucose, glycerol, sodium acetate, and sucrose under mixotrophic condition...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330200/use-of-ca-alginate-immobilized-pseudomonas-aeruginosa-for-repeated-batch-and-continuous-degradation-of-endosulfan
#6
Vijayalakshmi Pradeep, Usha Malavalli Subbaiah
The current investigation is taken up with the aim of studying repeated batch and continuous degradation of Endosulfan, using Ca-alginate immobilized cells of Pseudomonas aeruginosa isolated from an agricultural soil. The work involves the study of genes and enzymes involved in the degradation of the pesticide and was carried out with an objective of reducing the toxicity of Endosulfan by degrading it to less toxic metabolites. The long-term stability of Endosulfan degradation was studied during its repeated batch degradation, carried out over a period of 35 days...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330179/antioxidant-and-antiplatelet-activities-of-flavonoid-rich-fractions-of-three-citrus-fruits-from-korea
#7
Awraris Derbie Assefa, Eun Young Ko, So Hyun Moon, Young-Soo Keum
Three different fractional (methanol, ethyl acetate and hexane) extracts from yuzu (Citrus junos Sieb ex Tanaka), hallabong [(C. unshiu Marcov × C. sinensis Osbeck) × C. reticulata Blanco] and orange (C. sinensis) were evaluated for their antioxidant activity and antiplatelet effects. 2,2-Diphenyl-1-Picrylhydrazyl (DPPH), cupric reducing antioxidant capacity (CUPRAC) and ferric-reducing antioxidant power (FRAP) methods were used for the antioxidant activity tests. Total flavonoids and total phenolics were also evaluated spectrophotometrically...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330158/a-simple-and-efficient-agrobacterium-tumefaciens-mediated-plant-transformation-of-brassica-rapa-ssp-pekinensis
#8
Venkidasamy Baskar, Baniekal H Gangadhar, Se Won Park, Shivraj Hariram Nile
The present study aims to investigate the numerous factors influencing Agrobacterium tumefaciens-mediated genetic transformation of Chinese cabbage (Brassica rapa ssp. pekinensis). Factors affecting transformation efficiency, such as age of explants, Agrobacterium concentration, and effect of acetosyringone, pre-cultivation, infection and co-cultivation time of Agrobacterium were examined. The pre-cultured hypocotyls from young seedlings prior to exposure to Agrobacterium showed higher shoot regeneration. The plant transformation with the modest A...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330081/emerging-cam-ziziphus-nummularia-with-in-vivo-sedative-hypnotic-antipyretic-and-analgesic-attributes
#9
Abdur Rauf, Jawad Ali, Haroon Khan, Mohammad S Mubarak, Seema Patel
Ziziphus nummularia from Rhamnaceae family is traditionally used for sedative-hypnotic, antipyretic and analgesic purposes; however, scientific validations are lacking. This in vivo study was undertaken to verify the above ameliorative properties of Z. nummularia root methanolic extract. Various fractions of the extract were assayed on Balb/c mice by open field, Brewer's yeast-induced hyperthermia and acetic acid-induced writhing experiments. The significance of the outcomes was analyzed with statistical tests...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330077/diversity-and-antagonistic-potential-of-marine-microbes-collected-from-south-west-coast-of-india
#10
S Sinimol, A R Sarika, A Jayakumaran Nair
The diversity of some of the culturable microorganisms associated with marine flora and fauna collected off Vizhinjam and Mulloor coast of South India was evaluated and their bioactive production potential determined. From a total of 24 bacteria, 4 actinomycetes and 8 fungi isolated from diverse marine sources, five bacterial species-BLM3, BSP2, BCS1, BCS4 and BMA6 showed inhibitory activity against at least one of the tested pathogens viz., Klebsiella pneumonia KU1, Pseudomonas aeruginosa VL3, Salmonella enterica typhimurium MTCC 98, Escherichia coli MTCC 40, Micrococcus luteus MTCC 105, Staphylococcus simulans MTCC 3610, Proteus vulgaris MTCC 426, Vibrio fluvialis, Vibrio sp...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28329744/antiviral-and-immunomodulatory-effects-of-norantea-brasiliensis-choisy-on-dengue-virus-2
#11
Luciana Gomes Fialho, Vagner Pereira da Silva, Sônia Regina Nogueira Ignácio Reis, Elzinandes Leal Azeredo, Maria Auxiliadora Coelho Kaplan, Maria Raquel Figueiredo, Claire Fernandes Kubelka
BACKGROUND/AIMS: Severe dengue fever is a result of exacerbated immune responses and no specific treatments are available. We evaluated the antiviral and immunomodulatory effects of Norantea brasiliensis Choisy. METHODS: Human adherent monocytes infected in vitro with dengue virus (DENV)-2 were incubated with the crude ethanol extract from leaves (NB1) or 3 derived fractions: dichloromethane (NB3), ethyl acetate (NB5), and butanolic (NB6) partitions. The antiviral and immunomodulatory activities were determined by intracellular detection of DENV antigen within monocytes and by secreted NS1 viral protein and cytokines...
March 23, 2017: Intervirology
https://www.readbyqxmd.com/read/28328179/effect-of-delayed-release-dimethyl-fumarate-on-no-evidence-of-disease-activity-in-relapsing-remitting-multiple-sclerosis-integrated-analysis-of-the-phase-iii-define-and-confirm-studies
#12
E Havrdova, G Giovannoni, R Gold, R J Fox, L Kappos, J Theodore Phillips, M Okwuokenye, J L Marantz
BACKGROUND AND PURPOSE: Significant effects on clinical/neuroradiological disease activity have been reported in patients with relapsing-remitting multiple sclerosis treated with delayed-release dimethyl fumarate (DMF) in phase III DEFINE/CONFIRM trials. We conducted a post hoc analysis of integrated data from DEFINE/CONFIRM to evaluate the effect of DMF on achieving no evidence of disease activity (NEDA) in patients with relapsing-remitting multiple sclerosis. METHODS: The analysis included patients randomized to DMF 240 mg twice daily, placebo or glatiramer acetate (CONFIRM only) for ≤2 years...
March 22, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28328161/synthesis-in-vitro-evaluation-and-68-ga-radiolabeling-of-cdp1-towards-pet-ct-imaging-of-bacterial-infection
#13
Jyotibon Dutta, Sooraj Baijnath, Anou M Somboro, Savania Nagiah, Fernando Albericio, Beatriz G de la Torre, Biljana Marjanovic-Painter, Jan Rijn Zeevaart, Mike Sathekge, Hendrik G Kruger, Anil Chuturgoon, Tricia Naicker, Thomas Ebenhan, Thavendran Govender
Bacterial infections are a major concern in the human health sector due to poor diagnosis and development of multi drug resistant strains. PET/CT provides a means for the noninvasive detection and localization of the infectious foci; however, the radiotracers available are either cumbersome to prepare or their exact contribution towards the imaging is not yet established. Human antimicrobial peptides are of interest for development as PET radiotracers as they are an integral component of the immune system, non-immunogenic towards the recipient and show selectivity towards pathogens such as bacteria...
March 22, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28328022/modifications-to-the-azide-method-for-nitrate-isotope-analysis
#14
Ying Tu, Yunting Fang, Dongwei Liu, Yuepeng Pan
RATIONALE: The azide method for measuring the stable isotope ratios of nitrate (NO3(-) ) is easy to set up. However, the method requires spongy cadmium (Cd) or activated Cd powder which are not easy to prepare, and a toxic azide buffer is used. We aimed to use Cd powder directly to simplify preparation and to substantially reduce the azide dose. METHODS: The reaction conditions were optimized in order to maximize the NO3(-) reduction yield. The original azide buffer was diluted by 10- to 10000-fold with or without addition of sodium acetate to reduce O-exchange between nitrite (NO2(-) ) and H2 O...
May 30, 2016: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28327529/mass-spectrometric-characteristics-of-prenylated-indole-derivatives-from-marine-derived-penicillium-sp-nh-sl
#15
Hui Ding, Wanjing Ding, Zhongjun Ma
Two prenylated indole alkaloids were isolated from the ethyl acetate extracts of a marine-derived fungus Penicillium sp. NH-SL and one of them exhibited potent cytotoxic activity against mouse hepa 1c1c7 cells. In order to detect other bioactive analogs, we used liquid chromatogram tandem mass spectrometry (LC-MS/MS) to analyze the mass spectrometric characteristics of the isolated compounds as well as the crude extracts. As a result, three other analogs were detected, and their structures were deduced according to the similar fragmentation patterns...
March 22, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28327357/the-ternary-complex-structure-of-d-mandelate-dehydrogenase-with-nadh-and-anilino-oxo-acetate
#16
Nayuta Furukawa, Akimasa Miyanaga, Masahiro Nakajima, Hayao Taguchi
Enterococcus faecium NAD-dependent d-mandelate dehydrogenase (D-ManDH) belongs to a ketopantoate reductase (KPR)-related D-2-hydroxyacid dehydrogenase family, and exhibits broad substrate specificity toward bulky hydrophobic 2-ketoacids, preferring C3-branched substrates. The ternary complex structure of D-ManDH with NADH and anilino(oxo)acetate (AOA) revealed that the substrate binding induces a shear motion of the N-terminal domain along the C-terminal domain, following the hinge motion induced by the NADH binding, and allows the bound NADH molecule to form favorable interactions with a 2-ketoacid substrate...
March 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28327293/melaxillines-a-and-b-monoterpenoid-indole-alkaloids-from-melodinus-axillaris
#17
Lei Fang, Shan-Ming Tian, Jie Zhou, Yun-Liang Lin, Zhi-Wei Wang, Xiao Wang
Two new monoterpenoid indole alkaloids, melaxillines A (1) and B (2), together with four known alkaloids (3-6), were isolated from the roots of Melodinus axillaris. The structures were determined by extensive spectroscopic methods, including 1D and 2D-NMR spectroscopy, high resolution mass spectrometric data, and by comparison to literature data. New compounds 1-2 might be derived from a common precursor (3) by proposing their biogenetic route, and compound 1 represents the first Melodinus alkaloid featuring an ethyl acetate group skeleton at C-18...
December 2016: Fitoterapia
https://www.readbyqxmd.com/read/28327126/characterization-and-mechanisms-of-anti-influenza-virus-metabolites-isolated-from-the-vietnamese-medicinal-plant-polygonum-chinense
#18
Thu Thi Tran, Meehyein Kim, Yejin Jang, Hye Won Lee, Hoa Thi Nguyen, Thanh Ngoc Nguyen, Hae Woong Park, Quang Le Dang, Jin-Cheol Kim
BACKGROUND: Polygonum chinense Linn. is a common medicinal plant in Southeast Asia and has been used in traditional medicine in Vietnam. The plant contains phytochemicals with various biological properties; however, its antiviral effect has not yet been demonstrated. This study was aimed to evaluate the anti-influenza virus activity of crude extracts of P. chinense, to characterize antiviral metabolites therefrom and to investigate their mechanisms of antiviral action. METHODS: The methanol (MeOH) extract and organic solvent layers of P...
March 21, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28326997/removal-of-phenol-by-powdered-activated-carbon-prepared-by-residue-extracted-from-coal-gasification-tar-residue
#19
Jun Shen, Xiong-Lei Wang, Yan-Xia Niu, Yu-Gao Wang, Gang Liu, Qing-Tao Sheng
coal gasification tar residue (CGTR) is a kind of environmentally hazardous by-product generated in fixed-bed coal gasification process. The extracted CGTR by ethyl acetate was used to prepare powdered activated carbon (PAC) and applied for phenol adsorption. The results showed that the prepared PAC under the optimum conditions had enormous mesoporous structure, and the iodine number reached 2030.11 mg/g, with specific surface area of 1981 m(2)/g and total pore volume of 0.92 ml/g. Especially, without loading other substances the PAC had a strong magnetic, easy to be separated after adsorbing phenol...
March 22, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28326847/anti-angiogenic-activity-and-phytochemical-screening-of-fruit-fractions-from-vitex-agnus-castus
#20
Giovanna Certo, Rosaria Costa, Valeria D'Angelo, Marina Russo, Ambrogina Albergamo, Giacomo Dugo, Maria Paola Germanò
Although the antitumour activity of Vitex agnus castus fruits has been already addressed, no work has yet assessed their anti-angiogenic potential. To this purpose, several extractive fractions of such fruits were tested on zebrafish embrios by EAP assay, so that only the bioactive fractions could be subsequently tested on the chick chorioallantoic membrane by CAM assay. Bioactive fractions were also phytochemically screened to identify those bioactive compounds responsible for anti-angiogenic activity. A marked inhibition of vessel formation was detected only in zebrafish embryos treated with chloroform or ethyl acetate fractions...
March 22, 2017: Natural Product Research
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