نتایج جستجو برای: nano bacterial cellulose

تعداد نتایج: 282108  

Journal: :Applied and environmental microbiology 2007
Florence Mingardon Angélique Chanal Ana M López-Contreras Cyril Dray Edward A Bayer Henri-Pierre Fierobe

Artificial designer minicellulosomes comprise a chimeric scaffoldin that displays an optional cellulose-binding module (CBM) and bacterial cohesins from divergent species which bind strongly to enzymes engineered to bear complementary dockerins. Incorporation of cellulosomal cellulases from Clostridium cellulolyticum into minicellulosomes leads to artificial complexes with enhanced activity on ...

Journal: :J. Sensors 2013
Sadia Farjana F. Toomadj Per Lundgren A. Sanz-Velasco O. Naboka Peter Enoksson

is paper reports the strain sensitivity of �exible, electrically conductive, and nanostructured cellulose which was prepared by modi�cation of bacterial cellulose with double-walled carbon nanotubes (DWCNTs) and multiwalled carbon nanotubes (MWCNTs).e electrical conductivity depends on themodifying agent and its dispersion process.e conductivity of the samples obtained from bacterial cellulo...

2012
Manmeet Kaur S. Arora

The present paper investigates cellulose degrading bacteria present in kitchen waste for highest cellulase activity and growth of bacteria at optimum temperature and pH. Sample was collected from domestic kitchen waste and bacterial strains were isolated using nutrient agar media. Enrichment technique was used for isolating CDB (cellulose degrading bacteria) strains. The objective of research w...

2013
Junlong Song Orlando J. Rojas

The development of super-hydrophobic surfaces has been inspired by natural systems and uses a number of novel (nano) technologies. Superhydrophobicity has stimulated much scientific and industrial interest because of applications in water repellency, selfcleaning, friction reduction, antifouling, etc. Despite its inherent hydrophilicity, cellulose has unparalleled advantages as a substrate for ...

2010
Ping Qu Huanwei Tang Yuan Gao Li-ping Zhang Siqun Wang

Polyethersulfone (PES) is a common material used for ultrafiltration (UF) membranes, which has good chemical resistance, high mechanical properties, and wide temperature tolerances. The hydrophobic property of the PES membrane seriously limits its application. Cellulose fibrils are composed of micro-sized and nano-sized elements, which have high hydrophilicity, strength, and biodegradation. A c...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1976
R M Brown J H Willison C L Richardson

In vivo synthesis of cellulose by Acetobacter xylinum was monitored by darkfield light microscopy. Cellulose is synthesized in the form of a ribbon projecting from the pole of the bacterial rod. The ribbon elongates at a rate of 2 mum min-1. The ribbon consists of approximately 46 microfibrils which average 1.6 X 5.8 nm in cross section. The observed microfibrillar elongation rate corresponds t...

2017
Mariane Planchon Thibaut Léger Olivier Spalla Gaspard Huber Roselyne Ferrari

In a previous study, it was demonstrated that the toxic impact of titanium dioxide nanoparticles on Escherichia coli starts at 10 ppm and is closely related to the presence of little aggregates. It was also assumed that only a part of the bacterial population is able to adapt to this stress and attempts to survive. Proteomic analyses, supported by results from metabolomics, reveal that exposure...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2002
Tetsuo Kondo Masanobu Nojiri Yukako Hishikawa Eiji Togawa Dwight Romanovicz R Malcolm Brown

Biodirected epitaxial nanodeposition of polymers was achieved on a template with an oriented molecular surface. Acetobacter xylinum synthesized a ribbon of cellulose I microfibrils onto a fixed, nematic ordered substrate of glucan chains with unique surface characteristics. The substrate directed the orientation of the motion due to the inverse force of the secretion during biosynthesis, and th...

2016
Ken Cham-Fai Leung Chaminda Jayampath Seneviratne Xuan Li Ping Chung Leung Clara Bik San Lau Chi-Hin Wong Ka Yan Pang Chun Wai Wong Elaine Wat Lijian Jin

Scutellariabaicalensis (SB) is a traditional Chinese medicine for treating infectious and inflammatory diseases. Our recent study shows potent antibacterial effects of nanoparticle-encapsulated chlorhexidine (Nano-CHX). Herein, we explored the synergistic effects of the nanoparticle-encapsulated SB (Nano-SB) and Nano-CHX on oral bacterial biofilms. Loading efficiency of Nano-SB was determined b...

Journal: :Carbohydrate polymers 2013
Eldho Abraham B Deepa L A Pothen J Cintil S Thomas M J John R Anandjiwala S S Narine

The objective of this work was to develop an environmental friendly method for the effective utilization of coir fibre by adopting steam pre-treatment. The retting of the coconut bunch makes strong environmental problems which can be avoided by this method. Chemical characterization of the fibre during each processing stages confirmed the increase of cellulose content from raw (40%) to final st...

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