Although, within plant cells, the cellulose chains are organized in variable and complex ways, relatively little attention has been paid to the relationship between this "fine-structure" of cellulose and its biodegradation. This work focuses on the influence of the substrata and enzyme concentrations on the enzymatic hydrolysis of microcrystalline cellulose. To determine the effect of the supramolecular structure on the enzymatic degradation of cellulose,

A new synthesis pattern of adamantoyl esters of cellulose (AdTMSC) is described. The process was approached by two steps. The first one consists in the obtaining of trimethylsilylcellulose (TMSC), by reacting cellulose in N,N-dimethylacetamide/lithium chloride (DMA/LiCl) solution with chlorotrimethylsilane and hexamethyldisilazane. The AdTMSC was synthesized by reacting trimethylsilylcellulose with 1-adamantanecarbonyl chloride,at 130°C. The obtained

It is well known that cellulose is a very important and fascinating biopolymer, and an almost inexhaustible and renewable raw material. The trend towards these kind of resources and the tailoring of innovative products for science, medicine, and technology has led to a global renaissance of interdisciplinary cellulose research and the increased use of this abundant organic polymer over the last decade. This new book presents fundamental and practical

This study was focused on the changes in the fine structure of cellulose samples of different origin during treatment with sodium hydroxide solution. Three types of cellulose, microcrystalline cellulose, spruce dissolving pulp and powder linters cellulose were alkalized with solution of sodium hydroxide of different concentrations, at -30°C. After alkalization the samples were defrozed, washed until neutral and dried in air. The structural changes

The complexity of cellulose thermal degradation results from the large number of parallel and consecutives reaction steps, from the change of the predominant reaction route with degradation temperature, from the intense influence of the ambient atmosphere on the degradation process and, last but not least, from the important role played by the structure of cellulose sample in thermal degradation. To determine the effect of the supramolecular structure

The cellulose-binding domain (CBD) is the second important and the most wide-spread element of cellulase structure involved in cellulose transformation with a great structural diversity and a range of adsorption behavior toward different types of cellulosic materials. The effect of the CBD from Clostridium cellulovorans on the supramolecular structure of three different sources of cellulose (cotton cellulose, spruce dissolving pulp, and cellulose