z-logo
Premium
Long‐term biofouling formation mediated by extracellular proteins in Nannochloropsis gaditana microalga cultures at different medium N/P ratios
Author(s) -
SorianoJerez Y.,
LópezRosales L.,
CerónGarcía M. C.,
SánchezMirón A.,
GallardoRodríguez J. J.,
GarcíaCamacho F.,
MolinaGrima E.
Publication year - 2021
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.27632
Subject(s) - biofouling , polyethylene glycol , bovine serum albumin , chemical engineering , adhesion , extracellular polymeric substance , polystyrene , photobioreactor , fouling , coating , chemistry , extracellular , materials science , polymer , chromatography , biochemistry , biofilm , organic chemistry , membrane , biology , microbiology and biotechnology , biofuel , bacteria , engineering , genetics
Biofouling represents an important limitation in photobioreactor cultures. The biofouling propensity of different materials (polystyrene, borosilicate glass, polymethyl methacrylate, and polyethylene terephthalate glycol‐modified) and coatings (two spray‐applied and nanoparticle‐based superhydrophobic coatings and a hydrogel‐based fouling release coating) was evaluated by means of a short‐term protein test, using bovine serum albumin (BSA) as a model protein, and by the long‐term culture of the marine microalga Nannochloropsis gaditana under practical conditions. The results from both methods were similar, confirming that the BSA test predicts microalgal biofouling on surfaces exposed to microalgae cultures whose cells secrete macromolecules, such as proteins, with a high capacity for forming a conditioning film before cell adhesion. The hydrogel‐based coating showed significantly reduced BSA and N. gaditana adhesion, whereas the other surfaces failed to control biofouling. Microalgal biofouling was associated with an increased concentration of sticky extracellular proteins at low N/P ratios (below 15).

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here