58 research outputs found
PHYSICAL, MORPHOLOGICAL PROPERTIES AND RAMAN SPECTROSCOPY OF CHESTNUT BLIGHT DISEASED CASTANEA SATIVA MILL. WOOD
Direct rate assessment of laccase catalysed radical formation in lignin by electron paramagnetic resonance spectroscopy
Cellulase recycling in biorefineriesis : is it possible?
On a near future, bio-based economy will assume a key role in our lives. Lignocellulosic materials (e.g., agroforestry residues, industrial/solid wastes) represent a cheaper and environmentally friendly option to fossil fuels. Indeed, following suitable processing, they can be metabolized by different microorganisms to produce a wide range of compounds currently obtained by chemical synthesis. However, due to the recalcitrant nature of these materials, they cannot be directly used by microorganisms, the conversion of polysaccharides into simpler sugars being thus required. This conversion, which is usually undertaken enzymatically, represents a significant part on the final cost of the process. This fact has driven intense efforts on the reduction of the enzyme cost following different strategies. Here, we describe the fundamentals of the enzyme recycling technology, more specifically, cellulase recycling. We focus on the main strategies available for the recovery of both the liquid- and solid-bound enzyme fractions and discuss the relevant operational parameters (e.g., composition, temperature, additives, and pH). Although the efforts from the industry and enzyme suppliers are primarily oriented toward the development of enzyme cocktails able to quickly and effectively process biomass, it seems clear by now that enzyme recycling is technically possible.Financial support from FEDER and Fundação para a Ciência e a Tecnologia (FCT):
GlycoCBMs Project PTDC/AGR-FOR/3090/2012–FCOMP-01-0124-
FEDER-027948 and Strategic Project PEst-OE/EQB/LA0023/2013, Project
BBioInd-Biotechnology and Bioengineering for improved Industrial
and Agro-Food processes, REF. NORTE-07-0124-FEDER-000028 Cofunded
by the Programa Operacional Regional do Norte (ON.2–O Novo
Norte), QREN, FEDER and the PhD grant to DG (SFRH/BD/88623/
2012) and ACR (SFRH/BD/89547/2012)
Surface properties correlate to the digestibility of hydrothermally pretreated lignocellulosic Poaceae biomass feedstocks
Screening of superior fiber-quality-traits among wild accessions of Bambusa balcooa: efficient and non-invasive evaluation of fiber developmental stages
Quantum chemical calculations of pristine and modified crystalline cellulose surfaces: benchmarking interactions and adsorption of water and electrolyte
How spectroscopy and microspectroscopy of degraded wood contribute to understand fungal wood decay
Dielectric properties of lignin and glucomannan as determined by spectroscopic ellipsometry and Lifshitz estimates of non-retarded Hamaker constants
Laccase catalysed modification of TMP wood fibres:a discussion of the electronic state properties of solid state lignin
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