2026-07-21T01:59:49Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/839212026-04-06T19:06:12Zcom_10324_35294com_10324_952com_10324_894col_10324_35295

00925njm 22002777a 4500 dc López Linares, Juan Carlos author Romero García, Juan Miguel author Vidal, Alfonso M. author Lucas Yagüe, Susana author Coca Sanz, Mónica author García Cubero, M.Teresa author Romero, Inmaculada author Castro, Eulogio author 2026 Vine shoots, a carbohydrate-rich lignocellulosic residue, represent a promising feedstock for producing xylitol, butanol, and 2,3-butanediol (2,3-BDO) in an integrated biorefinery. In this work, dilute sulfuric acid steam explosion (190 ◦C, 5 min, 1.6% w/v H2SO4) was used for the pretreatment of vine shoots. Xylitol was subse- quently produced from the vine shoots hemicellulosic hydrolysate using C. boidinii and C. guilliermondii; while butanol and 2,3-BDO were generated from the remaining solid fraction of vine shoots using C. beijerinckii and P. polymyxa, respectively. Furthermore, two process configurations for butanol and 2,3-BDO generation were evaluated: separate hydrolysis and fermentation (SHF) and simultaneous saccharification and fermentation (SSF), with comparisons conducted at high solids loadings (10% and 15% w/v). As a result, 8.4 g/L xylitol were achieved from the hemicellulosic fraction with C. boidinii. From the cellulosic fraction, the SHF configuration at the highest solids loading (15% w/v) yielded 8.8 g/L of butanol (corresponding to 12.4 g/L of total ABE) and 13.8 g/L of 2,3-BDO. Therefore, these results demonstrate the potential of vine shoots as a versatile feedstock for an integrated biorefinery Journal of Industrial and Engineering Chemistry, 2026, 1226-086X https://uvadoc.uva.es/handle/10324/83921 10.1016/j.jiec.2026.03.024 Journal of Industrial and Engineering Chemistry Integral valorization of vine shoots: Production of xylitol, butanol and 2,3-butanediol in a biorefinery context