Characterization of vinasses from five certified brands of origin (CBO) and use as economic nutrient for the xylitol production by Debaryomyces hansenii.
Vinasses coming from the five CBOs of Galicia, north-western Spain, were characterized, and successfully employed as economic nutritional supplements for xylitol production by Debaryomyces hansenii. All fermentations can be modelled showing kinetic patterns fairly described by the mathematical models. No negative effect of the phenolic compounds in the liquid phase on the initial volumetric rate of product formation (r(P)(0)) was observed. Multiple linear regression analysis was used to describe the effect of metals and initial xylose acting on P(max) and Y(P/S). Zn was the most influential variable. Besides, partial least-squares regression models show a clear separation, based on the first two principal components, between the whole vinasses and the liquid fractions, which provided the higher P(max), with the exception of CBO 4, where P(max)=40.4 g/L, was achieved using the solid and liquid fraction.
Salgado
José Manuel
JM
Departamento de Enxeñería Química, Universidade de Vigo (Campus Ourense), Edificio Politécnico, As Lagoas, 32004 Ourense, Spain.
Carballo
Elena Martínez
EM
Max
Belén
B
Domínguez
José Manuel
JM
D002244:Carbon / Q000032:analysis; D005285:Fermentation; D005843:Geography; D007220:Industrial Waste / Q000032:analysis*; D016018:Least-Squares Analysis; D016014:Linear Models; D008903:Minerals / Q000032:analysis; D009584:Nitrogen / Q000032:analysis; D004718:Saccharomycetales / Q000378:metabolism*; D013030:Spain; D013997:Time Factors; D027843:Vitis / Q000737:chemistry*; D014865:Waste Disposal, Fluid; D014993:Xylitol / Q000096:biosynthesis*
D007220:Industrial Waste; D008903:Minerals; D002244:Carbon; D009584:Nitrogen; D014993:Xylitol