Search Results: 1 - 10 of 100 matches for " "
All listed articles are free for downloading (OA Articles)
Page 1 /100
Display every page Item
BIOTROPIA : the Southeast Asian Journal of Tropical Biology , 2006,
Abstract: Schizophyllum commune Fr., is one of the important fungi, causes brown germ and seed rot of oil palm. Biodiversity of antagonistic bacteria from oil palm plantations in Peninsular Malaysia is expected to support in development of biopesticide. Isolation with liquid assay and screening antagonistic bacteria using dual culture assay were carried out in the bioexploration. A total of 265 bacterial isolates from plant parts of oil palm screened 52 antagonistic bacterial isolates against 5. commune. Bacterial isolates were identified by using Biolog* Identification System i.e. Bacillus macroccanus, B. thermoglucosidasius, Burkholderia cepacia, B. gladioli, B. multivorans, B pyrrocinia, B. spinosa, Corynebacterium agropyri, C. misitidis, Enterobacter aerogenes, Microbacterium testaceum, Pseudomonas aeruginosa, P. citronellolis, Rhodococcus rhodochrous, Serratia ficaria, Serratia sp., S. marcescens, Staphylococcus sciuri, Sternotrophomonas maltophilia.


菌物学报 , 2003,
Abstract: A white rot fungus F17(Schizophyllum sp.) was very effective to decolorize a wide range of structurally diverse dyes. Non-woven fabric is the best immobilized carrier of the strain. Optimal preparation condition of the strain immobilization is determined by the cross-test experiments. Comparing with free cells, immobilization not only enhanced the ability to decolorize dye but also kept the stable rate of decolorization in the condition of different pH values and dye concentrations. The products decolorized by immobilized F17 were determined by UV-VIS spectra assay. The absorption in visible range disappeared,but the absorption in UV range were obviously increased. The result showed that the structures of dyes had changed greatly.
А.С. Бухало,О.М. Дуган,М.Р. Максимюк,В.М. Л?новицька
Proceedings of National Aviation University , 2012,
Abstract: The purpose of this work was a revelation and evaluation of spectrum and activity of hydrolytic enzymes of higher basidiomycetes Schizophyllum commune in a surface and submerged culture. 21 strains of S. commune were object of investigation. Researches were conducted by standard microbiological, biochemical and biotechnological methods. All strains on agar mediums were shown the following enzymes: amylase, caseinase, gelatinase, polygalacturonase, pectattranselyminase, urease, lipase, cellulase, laccase and peroxydase. The demonstration of oxidizing enzymes of laccase and peroxydase depended on composition of medium. The estimation of presence and level of activity of endo-1,4-b-glucanase, exoglucanase and monophenolmonooxygenase at submerged cultivation indicate primary influence of components of complex nourishing medium on enzyme activity of strain 1760 S. commune. Выполнена оценка спектра и активности гидролитических ферментов у высшего базидиомицета Schizophyllum commune в поверхностной и глубинной культуре. С помощью стандартных микробиологических, биохимических и биотехнологических методов исследованы 21 штамм S. commune. На агаризованных средах у всех штаммов обнаружены следующие ферменты: амилаза, казеиназа, желатиназа, полигалактуроназа, пектаттранселиминаза, уреаза, липаза, целлюлаза, лакказа и пероксидаза. Проявление окислительных фер-ментов лакказы и пероксидазы зависело от состава среды. Оценка наличия и уровня активности эндо-1,4-b-глю-каназы, экзоглюканазы и монофенолмонооксигеназы при глубинном культивировании свидетельствует о значительном влиянии компонентов комплексной питательной среды на ферментативную активность только у штамма 1760 S. commune. Розглянуто активн сть фермент в г дрол тичного комплексу Schizophyllum commune при культи-вуванн на агаризованих середовищах. Показано вплив компонент в комплексних р дких поживних середовищ (пивне сусло, бурякова меляса, кукурудзяний екстракт, пептон, екстракт кормових др ждж в) на ферментативну
Optimization of process variables for the manganese peroxidase of the white-rot fungus Schizophyllum sp. F17 by full factorial central composite design

Cheng Zh,Rong Ji,Xianglin Tao,Zuliang Yao,

生物工程学报 , 2010,
Abstract: White-rot fungus manganese peroxidase (MnP) that has great potential in degrading azo dyes is one of the extracellular glycolsylated heme proteins. MnP from Schizophyllum sp. F17 was isolated and purified by Sephadex G-75 gel filtration chromatography followed by DEAE-cellulose anion exchange chromatography. The molecular weight of the puried enzyme was 49.2 kDa, while the half-life of the MnP in the presence of 0.1 mmol/L H2O2 was 5?6 min. The efficiency of MnP-catalyzed reactions were determined by three key factors: the concentrations of Mn2+, H2O2, and the amount of MnP. Using single factor analysis, an optimized concentration of Mn2+, H2O2 and enzyme were optimized to be 1.2 mmol/L, 0.1 mmol/L, and 0.4 mL, respectively. A response surface methodology (RSM) employing two-level-three-factor full factorial central composite design was used to optimize the catalytic conditions. The result showed that the concentration of H2O2 and the interaction between H2O2 and MnP mostly affect the MnP catalytic efficiency. Finally, we show that the azo dyes could be efficiently decolorized by the purified MnP under optimized conditions.
Optimization of Parameters for Mycelia Growth by Schizophyllum commune and a Kinetic Model Study of its Growth Morphology
Yi Peng Teoh,Mashitah Mat Don
Journal of Applied Sciences , 2012,
Abstract: The ever expanding trend of rubberwood-based industry in Malaysia brings concerns about biodegradation problem on rubberwood for sustainable production. Conventional chemical control has been a successful method of preventing staining fungal growth. But the effects of these chemicals are of concern because they create problems for the environmental and public health. Schizophyllum commune is a well known edible white-rot fungus that is capable of producing secondary metabolites. Statistical optimization was employed to optimize the culture parameters for maximum mycelia growth of this fungus in shake flask culture. A Response Surface Methodology (RSM) coupled with Box-Behnken Design (BBD) was applied and three experimental parameters (pH, incubation temperature and agitation) were selected. The optimum condition for the maximal growth (33.1404 g L-1) was found to be at pH 6.78, 30.23°C and 174.14 rpm, respectively. Under such condition, the predicted maximum growth was in good agreement with the experimental data with 0.213-0.602% error. The growth kinetics of the Schizophyllum commune was investigated using an unstructured kinetic model, the Logistic model. The model provide reasonable result with R2>0.9.
Case report of Schizophyllum commune sinusitis in an immunocompetent patient
Castro,Luz ángela; álvarez,María Inés; Martínez,Ernesto;
Colombia Médica , 2010,
Abstract: schizophyllum commune is a basidiomycete fungus with broad distribution in nature; however, it is a rare cause of infectious disease. we report the isolation of this mould in a 46 year-old immunocompetent patient with chronic sinusitis previously treated with multiple antibiotics and topical nasal steroids. material obtained via a left maxillary sinus antrostomy showed septate hyaline hyphae with clamp connections on direct examination with koh and histopathological studies. further growth on sabouraud agar produced a white mould that, based on its microscopic and macroscopic characteristics, was identified as s. commune. despite its low frequency, this fungus should be considered a possible pathogen, particularly in samples obtained from paranasal sinuses.
Debating Migration as a Public Problem: Diasporic Stances in Media Discourse
Malina CIOCEA,Alexandru I. C?RLAN
Revista Roman? de Comunicare ?i Rela?ii Publice , 2012,
Abstract: This explorative study focuses on the construction of migration as a public problem through media discourse. Adopting Rogers Brubaker'ssuggestion to approach diaspora as "a idiom, stance and claim", westart from the assumption that journalists, when discussing migration, adopt diasporic stances, expressing loyalties and moral commitments and articulating them in the debate through practical arguments. Focusing on the media debates generated, in August2010, by a declaration of Traian Basescu, president of Romania, onthe effects of migration, we identify three types of media discourse: the policy approach discourse, the professional accomplishment discourse and the citizen-as-victim discourse. We systematically relate these types of discourses with the arguments invoked for or against migration, and their subjacent loyalties. We concludethat through such diasporic stances, journalist engage diaspora in an instrumental manner, instituting a onedimensional perspective on it, along the traditional view of the social-political victimization.
La Terre, notre bien commun  [cached]
Arnaud Berthoud
Développement Durable et Territoires , 2008,
Abstract: La Terre nous fait découvrir aujourd’hui une forme de responsabilité à l’égard de l’humanité toute entière. Quelle sorte de chose est donc la Terre lorsque nous usons de ce terme sous ses formes variées et que nous tentons de nous hisser au niveau de ce fait historique nouveau et de notre inquiétude à son sujet ? Je propose cette réponse générale : la Terre nous appara t comme ce qui a été, est et sera toujours la chose la plus vaste à laquelle s’attache notre bien commun, parce qu’elle est le support, le fondement ou la base visible d’une vie que chacun éprouve intérieurement, selon un lien immédiat avec quelques semblables et comme le bien dont nous savons, comme le disait Ma tre Eckhart (1948, p.148), que de tous les biens aucun ne nous est plus cher et plus désirable . C’est cette réponse que je tente de développer en précisant successivement sous l’inspiration d’Aristote quelques traits relatifs au bien commun dont la Terre serait le support le plus vaste et sous l’inspiration biblique quelques remarques relatives au lien vivant qui nous attache à nos semblables et dont la Terre serait la base visible la plus claire. Je dirais alors que dans le premier cas la Terre est saisie comme un objet économique et que dans le second cas la Terre est saisie comme un objet religieux. J’essayerai dans la conclusion de rapporter ces deux types de propos l’un à l’autre.
BIOTROPIA : the Southeast Asian Journal of Tropical Biology , 1990,
Abstract: Four fungal isolates from soils obtained from three sites of the oil palm plantations in North Sumatra were found antagonistic to Ganoderma boninense, the causal agent of basal stem rot of oil palm. Penicillium citrinum inhibited the growth of the pathogen and formed a zone of inhibition on the agar media. Trichoderma harzianum BIO - 1 as well as BIO - 2 and T. viride not only repressed the growth of the pathogen but also caused lysis of the hyphae, and the colony was totally overgrown by the antagonists.
Schizophyllum Commune a Causative Agent of Fungal Sinusitis: A Case Report
T. Premamalini,B. T. Ambujavalli,S. Anitha,L. Somu,Anupma J. Kindo
Case Reports in Infectious Diseases , 2011, DOI: 10.1155/2011/821259
Abstract: We present a case of maxillary sinusitis caused by Schizophyllum commune, in a 50-year-old female. The patient presented with nasal obstruction, purulent nasal discharge from right side of the nose, cough, headache, and sneezing. Computed tomography revealed extensive opacity of the right maxillary sinus as well as erosion of the nasal wall and maxillary bone. Functional endoscopic sinus surgery was done, and fungal debris present on right side of the maxillary sinus was removed and sent to laboratory. Potassium hydroxide (KOH) examination of the nasal discharge showed hyaline, septate hyphae. Primary isolation on Sabouraud's dextrose agar (SDA) yielded a white woolly mould. Banana peel culture after 8 weeks showed macroscopically visible fan-shaped fruiting bodies. Lactophenol cotton blue (LPCB) mount of the same revealed hyaline septate hyphae, often with clamp connections. Identification was confirmed by the presence of clamp connections formed on the hyphae and by vegetative compatibility with known isolates.
Page 1 /100
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.