RT Journal Article
T1 Potential Impact of Biodegradable Surfactants on Foam-Based Microalgal Cultures
A1 Vázquez, María
A1 Castilla Alcántara, José Carlos
A1 Garbayo Nores, Inés
A1 Vílchez Lobato, Carlos
A1 Cuaresma Franco, María
AB Microalgae cultivation in liquid foams is a promising concept which requires the useof a surfactant as a foam stabilizing agent. The biodegradable character of a surfactant is a keyaspect regarding its applicability in a liquid foam-bed photobioreactor (LF-PBR), since it mightinfluence microalgal growth and the stability of the foam-based cultivation. In this work, the effectsof the biodegradable surfactants bovine serum albumin (BSA), Saponin and Tween 20 on the wholemicrobial community of microalgal cultures (i.e., microalgal and bacterial populations) were studied.The three surfactants enhanced bacterial and microalgal growth in non-axenic microalgal cultures,but they differed in their efficiency to sustain bacterial growth. In this sense, Saponin was proven toenhance the growth of S. obliquus-associated bacteria in microalgae-free cultures, and to sustain it evenwhen other nutrients were lacking, suggesting that Saponin can be used as an energy and nutrientssource by these bacteria. The degradation and consumption of Saponin by S. obliquus-associatedbacteria was also confirmed by the foaming capacity decrease in Saponin-added bacterial cultures.The biodegradable character of BSA, Saponin and Tween 20 reduces their suitability to be used in aLF-PBR since they would not be able to maintain stable foaming.
PB MDPI
SN 2227-9717
YR 2020
FD 2020-12
LK http://hdl.handle.net/10272/19527
UL http://hdl.handle.net/10272/19527
LA eng
NO Vázquez, M., Castilla Alcántara, J. C., Garbayo Nores, I., Vílchez Lobato, C., & Cuaresma Franco, M. (2020). Potential Impact of Biodegradable Surfactants on Foam-Based Microalgal Cultures. Processes, 8(12), 1640. DOI: https://doi.org/10.3390/pr8121640
DS Repositorio Institucional de la Universidad de Huelva
RD 15 jun 2026