Hydnocarpus alpina Wt extract mediated green synthesis of ZnO nanoparticle and screening of its anti-microbial, free radical scavenging, and photocatalytic activity

Publication date: Available online 19 April 2019Source: Biocatalysis and Agricultural BiotechnologyAuthor(s): Mani Ganesh, Sung Gil Lee, Jayabalan Jayaprakash, Murugan Mohankumar, Hyun Tae JangAbstractThis paper reports green synthesis of ZnO nanoparticle (ZnO Np) using Hydnocarpus alpina aqueous alcoholic extract as capping agent. These green synthesized ZnO Nps were characterized using Fourier transform Infrared (FT-IR), powder X-ray diffraction (PXRD), Field Emission Scanning electron microscopy (FE-SEM), and UV–visible diffuse reflectance spectroscopy (DRS-UV). FE-SEM and PXRD results revealed that these synthesized ZnO NPs had spherical morphology with diameter of 38.84 nm and high phase purity. Gas chromatography–mass spectrophotometric (GC-MS) phytochemical fingerprinting analysis of the plant extract showed the presence of 19 phytoconstituents that might potentially act as stabilizing and capping templates in the formation of nano particles. These synthesized ZnO NPs were tested against various Gram (+) ve and Gram (−) ve microorganism. They were more active against Proteus vulgaris and Salmonella enterica typhimurium compared to other organisms studied. Furthermore, these ZnO NPs showed potential in scavenging 2,2-Diphenyl-1-picrylhydrazyl (DPPH) free radicals. They also possessed potential photocatalytic activity against methylene blue degradation of about 96% in basic pH. These results suggest that these green synthesized ZnO NPs using HA ext...
Source: Biocatalysis and Agricultural Biotechnology - Category: Biotechnology Source Type: research

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In this study, room temperature (RT) of 25°C was considered as control, and RT at 32°C for 8 h per day was set as the HS treatment. After 3 weeks, the intestinal contents of jejunum, ileum, and cecum were harvested to investigate the microbiota composition variations by 16S ribosomal RNA amplicon sequencing. And the weight gain, adipose indices, intestinal morphology, and a certain number of serum biochemical parameters were also measured and analyzed. The results showed the microbial species at different levels differentially enriched in duck jejunum and cecum under HS, while no significant data were observed in i...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Conclusion Lactobacillus pentosus was the predominant species found at industrial scale in Spanish table olives biofilms, albeit certain genotypes of L. plantarum were also detected. At genotype level, biodiversity was higher in the Spanish-style table olive biofilms than in those of directly brined olives. The multivariate analysis based on technological and probiotic data showed that the main 16 genotypes obtained could be clustered in 3 great phenotypes, with some strains with potential application as multifunctional starters (especially L. pentosus Lp13 and LpG1 genotypes). Data obtained in the present study showed th...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Conclusion γPGA-producing Bacillus spp. were isolated during fermentation of OSL and LOSL at 0–12 h. These isolates exhibited antibacterial and ACE inhibitory activities at different concentrations. The individual antibacterial activities of γPGA were bacteriostatic while the combined use exhibited bactericidal characteristics. Although the ACE inhibitory activities were low, OSL and LOSL are promising sources for developing functional microorganisms with a beneficial impact on health. The importance lies in the benefits derived from the use of local resources. Author Contributions TA contributed to th...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
François Chassagne1†, Xinyi Huang1†, James T. Lyles1 and Cassandra L. Quave1,2* 1Center for the Study of Human Health, Emory University, Atlanta, GA, United States 2Department of Dermatology, Emory University, Atlanta, GA, United States In the search for new therapeutic solutions to address an increasing number of multidrug-resistant bacterial pathogens, secondary metabolites from plants have proven to be a rich source of antimicrobial compounds. Ginkgo biloba, a tree native to China, has been spread around the world as an ornamental tree. Its seeds have been used as snacks and medical mater...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
In this study, we sought to investigate whether SH0165 (serovar 5, high-virulent strain) and HN0001 (serovar 6, non-virulent strain) infection induces autophagy and the specific role of autophagy in bacterial invasion and inflammation during H. parasuis infection. Moreover, we explored the mechanism underlying autophagy regulated inflammation through inflammatory signaling cascades during H. parasuis infection. This observation could provide useful information for further understanding the role of autophagy in H. parasuis infection and improve our knowledge of new strategies against this pathogen. Materials and Methods B...
Source: Frontiers in cellular and infection microbiology - Category: Microbiology Source Type: research
Longhui Deng1*, Annika Fiskal1, Xingguo Han1, Nathalie Dubois2,3, Stefano Michele Bernasconi3 and Mark Alexander Lever1* 1Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, Zurich, Switzerland 2Surface Waters Research-Management, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland 3Department of Earth Sciences, ETH Zürich, Zurich, Switzerland The accuracy of flow cytometric (FCM) quantifications of microbial populations in sediments varies with FCM settings, cell extraction and staining protocols, as well as sample types. In the present study, we...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Publication date: February 2019Source: Brain, Behavior, and Immunity, Volume 76, SupplementAuthor(s): J.A. Bosch, L.J. Balter, S. Hulsken, M.T. Drayson, S. Aldred, J.J. Veldhuijzen van Zanten, J.E. RaymondThere is an established link between social isolation and poor health outcomes, although the exact mechanisms explaining this association remain unclear. Lonely individuals show an enhanced inflammatory response to acute stress, and in the present study we investigated if loneliness also predicts inflammatory responses to a standardized immune challenge (typhoid vaccination). Using a within-subjects crossover design (doub...
Source: Brain, Behavior, and Immunity - Category: Neurology Source Type: research
Abstract The agro-industrial waste obtained after the isolation of bio-constituents from ginger is available in abundance. In the present study, the effective isolation of ginger nanofibers (GNF) through acid hydrolysis was carried out to get cellulose nanofibers with 100 to 200 nm width by high pressure homogenization. Bionanocomposites were also prepared by reinforcing different ratios of (1% to 7%) GNF with chitosan (CS) and polyvinyl alcohol (PVA) matrices by solvent cast method and the 5% GNF with CS and PVA resulted a high mechanical strength composites than others. The surface morphology and structural an...
Source: International Journal of Biological Macromolecules - Category: Biochemistry Authors: Tags: Int J Biol Macromol Source Type: research
Eggs dominate the menus of all sorts of breakfast spots, from fast-food chains to organic cafes. But the humble egg comes with a lot of questions: Will eggs raise your cholesterol? Should you order an egg-white omelet or embrace the yolks? And what about organic eggs — are they really more nutritious? Whether you eat them every day or just occasionally, there’s plenty to learn about how to incorporate eggs into a healthy diet. Here, dietitians weigh in on what you need to know about nutrition in eggs. Are eggs healthy? Nutrition experts agree that the protein and vitamins in eggs make them a healthy option. &ld...
Source: TIME: Health - Category: Consumer Health News Authors: Tags: Uncategorized Diet/Nutrition Source Type: news
Eggs dominate the menus of all sorts of breakfast spots, from fast-food chains to organic cafes. But the humble egg comes with a lot of questions: Will eggs raise your cholesterol? Should you order an egg-white omelet or embrace the yolks? And what about organic eggs — are they really more nutritious? Whether you eat them every day or just occasionally, there’s plenty to learn about how to incorporate eggs into a healthy diet. Here, dietitians weigh in on what you need to know about nutrition in eggs. Are eggs healthy? Nutrition experts agree that the protein and vitamins in eggs make them a healthy option. &ld...
Source: TIME: Health - Category: Consumer Health News Authors: Tags: Uncategorized Diet/Nutrition Source Type: news
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