نتایج جستجو برای: cellulose biopolymer

تعداد نتایج: 71119  

Journal: :jundishapur journal of microbiology 0
anita khanafari microbiology department, north tehran branch, islamic azad university, tehran, ir iran; microbiology department, north tehran branch, islamic azad university, tehran, ir iran. tel: +98-2122082141 golnaz yaghoub nezhad zangeneh microbiology department, north tehran branch, islamic azad university, tehran, ir iran fariba sharifnia biology department, north tehran branch, islamic azad university, tehran, ir iran

background bedsore is one of the major problems in all the societies as patients are confined to bed. due to antibiotic resistant strains being a significant obstacle for cure, many plants and herbs are being used by researchers as medicinal compounds. objectives the investigation of synergistic effect of cellulose biopolymer and papaver macrostomum extract on bedsores bacterial community. mate...

Background: Nanomicrobial cellulose is an important biopolymer with a three-dimensional structure that is produced by some microorganisms and has been widely used in medicine. One of the unique properties of microbial cellulose is its very high water absorption, which can be used to produce modern wound dressings. But after drying, it’s three-dimensional structure collapses and the amount of wa...

Journal: :Biomacromolecules 2006
Gunaranjan Viswanathan Saravanababu Murugesan Victor Pushparaj Omkaram Nalamasu Pulickel M Ajayan Robert J Linhardt

Electrospinning is a versatile process used to prepare micro- and nano- sized fibers from various polymers dissolved in volatile solvents. In this report, cellulose and cellulose-heparin composite fibers are prepared from nonvolatile room temperature ionic liquid (RTIL) solvents by electrospinning. RTILs are extracted from the biopolymer fiber after the fiber formation using a cosolvent. Micron...

Journal: :Molecules 2014
Archim Wolfberger Rupert Kargl Thomas Griesser Stefan Spirk

Microstructured thin films based on cellulose, the most abundant biopolymer on Earth, have been obtained by UV-irradiation of acid-labile trimethylsilyl cellulose thin films in the presence of N-hydroxynaphtalimide triflate as photoacid generator. We demonstrate that this photoregeneration process can be exploited for the manufacture of cellulose patterns having feature sizes down to 1 μm, with...

2010
Kam Tin Leung Canquan Mao Wensheng Qin

16 Cellulose, the major constituent of all plant materials and the most abundant 17 organic molecule on the Earth, is a linear biopolymer of glucose molecules, connected 18 by β-1,4-glycosidic bonds. Enzymatic hydrolysis of cellulose requires mixtures of 19 hydrolytic enzymes including endoglucanases, exoglucanases (cellobiohydrolases) and 20 β-glucosidases acting in a synergistic manner. In bi...

Journal: :Critical reviews in biotechnology 2010
Mehdi Dashtban Miranda Maki Kam Tin Leung Canquan Mao Wensheng Qin

Cellulose, the major constituent of all plant materials and the most abundant organic molecule on the Earth, is a linear biopolymer of glucose molecules, connected by β-1,4-glycosidic bonds. Enzymatic hydrolysis of cellulose requires mixtures of hydrolytic enzymes including endoglucanases, exoglucanases (cellobiohydrolases), and β-glucosidases acting in a synergistic manner. In biopolymer hydro...

Journal: :Plant signaling & behavior 2010
Ying Gu Chris Somerville

Cellulose is the most abundant biopolymer on earth. The great abundance of cellulose places it at the forefront as a primary source of biomass for renewable biofuels. However, the knowledge of how plant cells make cellulose remains very rudimentary. Cellulose microfibrils are synthesized at the plasma membrane by hexameric protein complexes, also known as cellulose synthase complexes. The only ...

2011
Loredana Dobre Marta Stroescu Iuliana Jipa

Biopolymer films containing chitosan as antimicrobial agent were obtained. As polymer matrix poly(vinyl alcohol) (PVA) and bacterial cellulose (BC) were used. The films were characterized using FTIR spectroscopy. FTIR spectra of the pure components and of composites films reveal strong interactions between chitosan and PVA and chitosan and bacterial cellulose. These composite films could be use...

2013
M. N. Chai M. I. N. Isa

Biopolymer electrolyte based on carboxymethyl cellulose has been prepared by doping with different concentration of oleic acid via solution casting technique. Fourier Transform Infrared spectroscopy was used to study the complexation between the salt and polymer. New peak was observed at 1710, 2850, 2920 cm. X-ray diffraction study reveals the amorphous nature of the biopolymer electrolyte. Imp...

Journal: :Chemical communications 2011
Jingzhou Yin Feng Gao Jianjun Wang Qingyi Lu

Novel drum-like Cd(OH)(2) superstructures with uniform size were synthesized on a large scale through a facile one-pot hydrothermal route with the co-existence of ammonia and biopolymer sodium carboxymethyl cellulose solutions.

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