title: Assessment of suitability of vine shoots for hemicellulosic oligosaccharides production through aqueous processing.
abstract: Vine shoots were subjected to non-isothermal aqueous processing. A range of severities (S0) from 3.20 to 4.65 was assayed and their effects in terms of solubilization, composition, molar mass distribution, structural characterization and thermal stability of the liquors were studied using HPLC, HPSEC, TGA and FTIR. The spent solids were characterized by HPLC and FTIR. When autohydrolysis was carried out at S0=4.01, the substrate solubilization achieved a 38.7% of the raw material and 83.1% of the initial xylan was converted into xylooligosaccharides (XOS). The amount of TOS (total oligosaccharides) in the hydrolysates was 28.4g/L while the other non volatile compounds (ONVC) were 0.08g/g NVC. The spent solid from the treatment at S0=4.01 was composed about 90% of cellulose and lignin. Therefore, it can be concluded that autohydrolysis is a suitable pretreatment of vine shoots such as a first stage of a biomass refinery.
authors.affiliation: Chemical and Environmental Engineering Department, University of Basque Country, 20018 San Sebastián, Spain.
authors.forename: Izaskun
authors.initials: I
authors.lastname: Dávila
authors.affiliation: Chemical and Environmental Engineering Department, University of Basque Country, 20018 San Sebastián, Spain.
authors.forename: Oihana
authors.initials: O
authors.lastname: Gordobil
authors.affiliation: Chemical and Environmental Engineering Department, University of Basque Country, 20018 San Sebastián, Spain.
authors.forename: Jalel
authors.initials: J
authors.lastname: Labidi
authors.affiliation: Chemical and Environmental Engineering Department, University of Basque Country, 20018 San Sebastián, Spain. Electronic address: patricia.gullon@ehu.es.
authors.forename: Patricia
authors.initials: P
authors.lastname: Gullón
mesh_terms: D002482:Cellulose / Q000096:biosynthesis* / Q000737:chemistry; D006868:Hydrolysis; D009844:Oligosaccharides / Q000096:biosynthesis*; D027843:Vitis / Q000378:metabolism*
chemical_list: D009844:Oligosaccharides; D002482:Cellulose
keywords: Autohydrolysis; Biorefinery; Hemicelluloses; Oligosaccharides; Vine shoots