نتایج جستجو برای: nano bacterial cellulose

تعداد نتایج: 282108  

Journal: :Cogent engineering 2021

The cyclodextrin glucanotransferase are extracellular enzymes that can hydrolysis starch as a substrate to cyclodextrin. Encapsulation and immobilization technique of microbial cells within the polymeric network have widespread applications in production enzyme. Bacterial were isolated from soil by serial dilution method. molecular identity was established using 16S rDNA sequence analysis, iden...

2012
Marzieh Moosavi-Nasab Ali R. Yousefi

Bacterial cellulose, a biopolysaccharide, is produced by the bacterium, Gluconacetobacter xylinus. Static batch fermentation for bacterial cellulose production was studied in sucrose and date syrup solutions (Bx. 10%) at 28 °C using G. xylinus (PTCC, 1734). Results showed that the maximum yields of bacterial cellulose (BC) were 4.35 and 1.69 g/l00 ml for date syrup and sucrose medium after 336 ...

Journal: :Cellulose 2023

Abstract The development of eco-friendly materials for advanced applications is highly demanded. current study focuses on the preparation conductive membranes based tricarboxylic cellulose (TCC) loaded with cubic bismuth sodium titanate (BNKT) nanoceramics. FTIR, SEM, and EDX analyses confirm presence BNKT membranes. electrical response cellulose/xBNKT (x = 5, 10, 15, 20% wt/wt) membrane invest...

2016
Yaxi Xu Yudi Kuang Pekka Salminen Gang Chen

This work investigates nano-fibrillated cellulose (NFC) as a component in mineral pigment paper coating. In this work, bleached Eucalyptus pulp was pretreated by TEMPO (2,2,6,6-tetramethyl-1-piperdinyloxy)-mediated oxidation. The oxidized pulp was then isolated to obtain NFC by sonication. Aqueous coating colors consisting of calcium carbonate, clay, carboxylated butadiene-styrene latex, additi...

Journal: :Journal of colloid and interface science 2013
Eliane Trovatti Adriane de Medeiros Ferreira Antonio José Felix Carvalho Sidney José Lima Ribeiro Alessandro Gandini

This investigation reports the first application of admicellar polymerization to cellulose nanofibers in the form of bacterial cellulose, microfibrillated cellulose, and cellulose nanowhiskers using styrene and ethyl acrylate. The success of this physical sleeving was assessed by SEM, FTIR, and contact angle measurements, providing an original and simple approach to the modification of cellulos...

Journal: :Journal of fiber science and technology 2022

Aim at developing high-performance wound dressing with super moisture control performance, excellent antimicrobial activity, good biocompatibility as well reduced cost, carboxymethyl rayon viscose yarns (CM-RVYs) had been successfully prepared by alkalinization and etherification of using sodium hydroxide chloroacetic acid. The antibacterial CM-RVYs were obtained uniting chitosan/nano-Ag to the...

2015
Sudhir Sharma Xiaodan Zhang Arie Mulyadi Zhe Zhang Wei Mu Wei Liu Xu Du Junli Zhou

In this study we prepared high grammage, robust, and structurally dense CNF (Cellulose nano fibrils) films with and without wet strength crosslinker KymeneTM (PAE, a polyamide-epichlorohydrin resin). Both selfcrosslink of PAE network and hetero crosslink between cellulose and PAE were formed at elevated temperature. Besides expected wet strength improvement, we also discovered unique stress-str...

2012
Athanasios A. Koutinas Vasilios Sypsas Panagiotis Kandylis Andreas Michelis Argyro Bekatorou Yiannis Kourkoutas Christos Kordulis Alexis Lycourghiotis Ibrahim M. Banat Poonam Nigam Roger Marchant Myrsini Giannouli Panagiotis Yianoulis

Delignified cellulosic material has shown a significant promotional effect on the alcoholic fermentation as yeast immobilization support. However, its potential for further biotechnological development is unexploited. This study reports the characterization of this tubular/porous cellulosic material, which was done by SEM, porosimetry and X-ray powder diffractometry. The results showed that the...

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