RT Journal Article
T1 Optimization of liquid–liquid extraction of biosurfactants from corn steep liquor
A1 Vecino, Xanel
A1 Barbosa Pereira, Letricia
A1 Devesa-Rey, Rosa
A1 Cruz, José Manuel
A1 Moldes, Ana B.
K1 Corn steep liquor
K1 Industrial stream
K1 Liquid– 36 liquid process
K1 Biosurfactant
K1 Nutritional medium
AB In this work, the optimization of the operational conditions for the chloroform-based extraction of surface-active compounds from corn steep liquor (CSL) was carried out and the nutritional properties of the remnant aqueous phase (CSL-less biosurfactant) was evaluated as microbial fermentation medium. The optimal conditions to obtain biosurfactants from CSL were as follows: chloroform/CSL ratio 2 (v/v), 56 °C at extraction times >30 min. At the optima conditions, 100 % of biosurfactant extract can be obtained from CSL, obtaining 12.0 ± 0.5 g of biosurfactant extract/Kg of CSL. The critical micelle concentration (CMC) of the biosurfactant extract was 399.4 mg L−1. This value is similar to the CMC of cetrimonium bromide (CTAB), a cationic surfactant used in the formulation of nanoparticles. The extraction of biosurfactant can be also carried out at room temperature although in this case, the extraction yield decreased about 15 %. The extraction of surface-active compounds from agroindustrial streams can suppose important advances for the bio-based surfactants industry. Biosurfactants obtained in this work are not only more eco-friendly than chemical detergents but also can be cost competitive with its chemical counterparts. Furthermore, after the extraction of surface-active compounds, CSL-less biosurfactant was found to be suitable as nutritional supplement for lactic acid bacteria, maintaining its nutritional properties in comparison with regular CSL
PB Springer
SN 1615-7591
YR 2015
FD 2015
LK https://hdl.handle.net/10347/39418
UL https://hdl.handle.net/10347/39418
LA eng
NO Vecino, X., Barbosa-Pereira, L., Devesa-Rey, R., Cruz, J. M., & Moldes, A. B. (2015). Optimization of liquid–liquid extraction of biosurfactants from corn steep liquor. Bioprocess and Biosystems Engineering, 38(9), 1629–1637. https://doi.org/10.1007/s00449-015-1404-9
DS Minerva
RD 24 abr 2026