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Nicolaj Cruys-Bagger et al.
Biochemistry, 52(49), 8938-8948 (2013-11-16)
Cellobiohydrolases are exoacting, processive enzymes that effectively hydrolyze crystalline cellulose. They have attracted considerable interest because of their role in both natural carbon cycling and industrial enzyme cocktails used for the deconstruction of cellulosic biomass, but many mechanistic and regulatory
Nasrullah Shah et al.
Carbohydrate polymers, 98(2), 1585-1598 (2013-09-24)
Bacterial cellulose (BC) has received substantial interest owing to its unique structural features and impressive physico-mechanical properties. BC has a variety of applications in biomedical fields, including use as biomaterial for artificial skin, artificial blood vessels, vascular grafts, scaffolds for
Microbiology. No barriers to cellulose breakdown.
Alex Berlin
Science (New York, N.Y.), 342(6165), 1454-1456 (2013-12-21)
Roman Brunecky et al.
Science (New York, N.Y.), 342(6165), 1513-1516 (2013-12-21)
Most fungi and bacteria degrade plant cell walls by secreting free, complementary enzymes that hydrolyze cellulose; however, some bacteria use large enzymatic assemblies called cellulosomes, which recruit complementary enzymes to protein scaffolds. The thermophilic bacterium Caldicellulosiruptor bescii uses an intermediate
Ying Deng et al.
Journal of bacteriology, 195(22), 5072-5083 (2013-09-10)
The acs operon of Gluconacetobacter is thought to encode AcsA, AcsB, AcsC, and AcsD proteins that constitute the cellulose synthase complex, required for the synthesis and secretion of crystalline cellulose microfibrils. A few other genes have been shown to be
Mizuho Kunii et al.
Development genes and evolution, 224(1), 25-35 (2013-11-19)
Dictyostelium discoideum is a facultative multicellular amoebozoan with cellulose in the stalk and spore coat of its fruiting body as well as in the extracellular matrix of the migrating slug. The organism also harbors a number of cellulase genes. One
Weihua Wu et al.
Archives of microbiology, 195(12), 823-829 (2013-10-29)
This study investigated the cellular location and the contribution of individual β-glucosidase (BGL) to total BGL activity in Neurospora crassa. Among the seven bgl genes, bgl3, bgl5, and bgl7 were transcribed at basal levels, whereas bgl1, bgl2, bgl4, and bgl6
Nelson Durán et al.
Recent patents on nanotechnology, 6(1), 16-28 (2011-08-31)
This review attempts to visualize the actual impact of nanocellulose-based materials in different areas. A detailed search in recent patent databases on nanocellulose showed the importance of this material, as well as relevant topics concerning its technological preparations to obtain
Jitka Muzíková et al.
Acta poloniae pharmaceutica, 70(6), 1087-1096 (2014-01-05)
The study evaluates the micronized poloxamers Lptrol micro127 (poloxamer 407) and Lptrol micro 68 (poloxamer 188) as lubricants in combination with the dry binders microcrystalline cellulose and spray-dried lactose. Magnesium stearate was employed as the comparative lubricant. The parameters under
Patrick Shahgaldian et al.
Chimia, 67(6), 425-426 (2013-08-16)
Cyclodextrins are cyclic oligomers of glucose; they are widely used in a large range of industrial applications because of their molecular inclusion properties. We used cyclodextrins to prepare different libraries of polymers and tested their ability to selectively recognize pharmaceuticals
Feng Xu et al.
Carbohydrate polymers, 94(2), 904-917 (2013-04-03)
The high processing cost of lignocellulosic ethanol is one of the most important barriers to its profitable commercialization. Pretreatments have been used to change the structure of biomass significantly and to improve sugar and ethanol yield. Great efforts have been
Johan O Westman et al.
Applied and environmental microbiology, 80(22), 6908-6918 (2014-08-31)
Yeast has long been considered the microorganism of choice for second-generation bioethanol production due to its fermentative capacity and ethanol tolerance. However, tolerance toward inhibitors derived from lignocellulosic materials is still an issue. Flocculating yeast strains often perform relatively well
E A Tsavkelova et al.
Prikladnaia biokhimiia i mikrobiologiia, 48(5), 469-483 (2012-10-30)
Anaerobic microbial conversion of organic substrates to various biofuels is one of the alternative energy sources attracting the greatest attention of scientists. The advantages of biogas production over other technologies are the ability of methanogenic communities to degrade a broad
Hosseinali Tabandeh et al.
Pakistan journal of pharmaceutical sciences, 27(3), 495-503 (2014-05-09)
This study was performed to achieve sustained-release Ibuprofen matrix tablets with a zero-order release kinetic while most of the previous formulations have shown Higuchi release kinetic. Considering the results from previous studies, ethyl cellulose, Carbopol 934P, Carbopol 974P, and Pemulen
J Chan
Journal of microscopy, 247(1), 23-32 (2011-12-17)
In this review, I ask the question of what is the relationship between growth and the orientations of microtubules and cellulose microfibrils in plant cells. This should be a relatively simple question to answer considering that text books commonly describe
Kevin C-Y Lee et al.
The ISME journal, 8(7), 1522-1533 (2014-01-31)
Most of the lineages of bacteria have remained unknown beyond environmental surveys using molecular markers. Until the recent characterisation of several strains, the phylum Armatimonadetes (formerly known as 'candidate division OP10') was a dominant and globally-distributed lineage within this 'uncultured
Josué David Hernández-Varela et al.
Carbohydrate polymers, 255, 117347-117347 (2021-01-14)
The aim of this study was to obtain cellulose and cellulose nanoparticles (CNP) from garlic and agave wastes, as well as elucidating its structure at different scales using microscopy and spectroscopy techniques. Cellulose is isolated by using a sequential extractive
C Wiegand et al.
Journal of wound care, 22(11), 592-592 (2013-11-15)
To test the binding capacity of a hydrokinetic fiber dressing for PMN elastase, MMP-2 and MMP-9 in vitro, and to determine whether testing of dressing material samples in vitro is sufficient to predict the performance of the whole dressing. In
Wen-Tzu Wu et al.
Food chemistry, 155, 304-310 (2014-03-07)
Mice were fed low-fibre, or that supplemented with soluble fibre (konjac glucomannan, KGM; inulin), or insoluble fibre (cellulose) to determine how these three fibres modulated the acute colonic responses to an azoxymethane (AOM) treatment. Results indicated that KGM and inulin
Sheh-Hong Lim et al.
Pakistan journal of biological sciences : PJBS, 16(18), 920-926 (2014-02-08)
The aim of this study was to develop an economical bioprocess to produce the fermentable sugars at laboratory scales Using Oil Palm Frond (OPF) as substrate in Solid State Fermentation (SSF). OPF waste generated by oil palm plantations is a
Bona Kim et al.
Journal of nanoscience and nanotechnology, 13(11), 7454-7458 (2013-11-20)
Silver nanowires have unique electrical, thermal and optical properties, which support their potential application in numerous fields including catalysis, electronics, optoelectronics, sensing, and surface-enhanced spectroscopy. Especially, their application such as catalysts for alkaline fuel cells (AFCs) have attracted much interest
Muhammad K Shahzad et al.
Advances in clinical and experimental medicine : official organ Wroclaw Medical University, 22(2), 177-183 (2013-05-28)
The aim of the present work was to formulate flurbiprofen (FLB) loaded microspheres of hydroxypropylmethycellulose and ethylcellulose polymers to study the effect of different proportions of the polymer mixture on the release behavior of the drug. A series of microspheres
Zeng-Guang Wang et al.
Yi chuan = Hereditas, 35(5), 655-665 (2013-06-05)
Bioactive gibberellins (GAs) are a type of important plant growth regulators, which play the key roles in multiple processes, such as seed germination, leaf expansion, flowering, fruit bearing, and stem development. Its biosynthesis is regulated by a variety of enzymes
Tetsuo Kondo et al.
Journal of bioscience and bioengineering, 118(4), 482-487 (2014-05-07)
We investigated the autonomous bottom-up fabrication of three-dimensional honeycomb cellulose structures, using Gluconacetobacter xylinus as a bacterial nanoengine, on cellulose honeycomb templates prepared by casting water-in-oil emulsions on glass substrates (Kasai and Kondo, Macromol. Biosci., 4, 17-21, 2004). The template
Olof Regnell et al.
Ambio, 43(7), 878-890 (2014-01-15)
Methylation of mercury (Hg) to highly toxic methyl Hg (MeHg), a process known to occur when organic matter (OM) decomposition leads to anoxia, is considered a worldwide threat to aquatic ecosystems and human health. We measured temporal and spatial variations
Tuo Wang et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(41), 16444-16449 (2013-09-26)
Structure determination of protein binding to noncrystalline macromolecular assemblies such as plant cell walls (CWs) poses a significant structural biology challenge. CWs are loosened during growth by expansin proteins, which weaken the noncovalent network formed by cellulose, hemicellulose, and pectins
Martin Bringmann et al.
Trends in plant science, 17(11), 666-674 (2012-07-13)
Directed plant cell growth is governed by deposition and alterations of cell wall components under turgor pressure. A key regulatory element of anisotropic growth, and hence cell shape, is the directional deposition of cellulose microfibrils. The microfibrils are synthesized by
David A Hufnagel et al.
Journal of bacteriology, 196(21), 3690-3699 (2014-08-13)
The bacterial extracellular matrix encases cells and protects them from host-related and environmental insults. The Escherichia coli master biofilm regulator CsgD is required for the production of the matrix components curli and cellulose. CsgD activates the diguanylate cyclase AdrA, which
Tomoko Maehara et al.
Fungal biology, 117(3), 220-226 (2013-03-30)
Ethanol production by Flammulina velutipes from high substrate concentrations was evaluated. F. velutipes produces approximately 40-60 g l(-1) ethanol from 15% (w/v) D-glucose, D-fructose, D-mannose, sucrose, maltose, and cellobiose, with the highest conversion rate of 83% observed using cellobiose as
Rocktotpal Konwarh et al.
Biotechnology advances, 31(4), 421-437 (2013-01-16)
Cellulose acetate (CA) has been a material of choice for spectrum of utilities across different domains ranging from high absorbing diapers to membrane filters. Electrospinning has conferred a whole new perspective to polymeric materials including CA in the context of
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