TY - JOUR AU - Portugal-Nunes, Diogo AU - Sànchez i Nogué, Violeta AU - Pereira, Susana R. AU - Craveiro, Sandra C. AU - Calado, António J. AU - Xavier, Ana MRB PY - 2015 DA - 2015/03/17 TI - Effect of cell immobilization and pH on Scheffersomyces stipitis growth and fermentation capacity in rich and inhibitory media JO - Bioresources and Bioprocessing SP - 13 VL - 2 IS - 1 AB - A wide range of value-added products can potentially be produced by bioprocessing hardwood spent sulfite liquors (HSSLs) that are by-products of pulp and paper industry with a high pentose sugar content. However, besides sugars, HSSLs contain considerable amounts of sulfonated lignin derivatives and acetic acid that inhibit the metabolic activity of most microorganisms. Scheffersomyces stipitis is a yeast with high capacity to ferment the pentose sugar xylose under appropriate microaerophilic conditions but it has limited tolerance to HSSL inhibitors. In the present study, cultivations of suspended and immobilized S. stipitis were compared in terms of growth capacity and by-product formation using rich medium and HSSL to investigate whether the immobilization of cells in calcium alginate beads could be a protection against inhibitors while favoring the presence of microaerophilic conditions. SN - 2197-4365 UR - https://doi.org/10.1186/s40643-015-0042-z DO - 10.1186/s40643-015-0042-z ID - Portugal-Nunes2015 ER -