This present study was undertaken to investigate the ultrasonic delignification of switchgrass (Panicum virgatum L.) and effects irradiation on molecular microstructure switchgrass. We investigated this question using response surface methodology (RSM) featuring a four-factor, three-level Box–Behnken experimental design with acoustic power (120, 180, 240 W), solid–solvent ratio (1/25, 1/20, 1/1...

In kraft pulping, wood polysaccharides are subjected to the end-wise degradation (i.e., the peeling reaction) under alkaline conditions with the simultaneous formation of a large number of water/alkali-soluble hydroxy monoand dicarboxylic acids together with formic and acetic acids [1-3]. The versatile analysis of organic material in black liquor is of a great importance, for example, for monit...

CRYOSTAT MICROTOME SECTIONS OF BIRCH WOOD DEGRADED BY WHITE ROT FUNGI WERE EXAMINED BY LIGHT MICROSCOPY AFTER TREATMENT WITH TWO STAINS: astra-blue, which stains cellulose blue only in the absence of lignin, and safranin, which stains lignin regardless of whether cellulose is present. The method provided a simple and reliable screening procedure that distinguishes between fungi that cause decay...

Paper pulp delignification using laccase and natural mediators Susana Camarero a, David Ibarra a, Ángel T. Martı́nez a,∗, Javier Romero b, Ana Gutiérrez c, José C. del Rı́o c a Centro de Investigaciones Biológicas, CSIC, Ramiro de Maeztu 9, E-28040 Madrid, Spain b Centro de Investigación y Tecnologı́a, ENCE, Carretera de Campañó, Ribeiro Vao, E-36157 Pontevedra, Spain c Instituto de Recursos Natur...

The continuous increase in the world energy and chemicals demand requires the development of sustainable alternatives to non-renewable sources of energy. Biomass facilities and biorefineries represent interesting options to gradually replace the present industry based on fossil fuels. Lignocellulose is the most promising feedstock to be used in biorefineries. From a sugar platform perspective, ...