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Published on: April 11, 2016
Lactic whey as a potential feedstock for exopolysaccharide production by microalgae strain Neochloris oleoabundans
Daniel Moisés Paredes-Molina1, Miguel A Cervantes-López1,2, Domancar Orona-Tamayo2
1Investigación y Soluciones Tecnológicas, CIATEC, A.C., PC 37545, León, Guanajuato, Mexico.
Background:
Lactic whey, a significant agro-industrial byproduct, poses environmental risks due to its chemical composition. Despite various valorization efforts, effective utilization remains a challenge. This study explores the potential of Neochloris oleoabundans, a microalgae known for its metabolic versatility and resilience to adverse conditions, to produce exopolysaccharides (EPS) using lactic whey as a substrate. We compared EPS production from lactose, the primary sugar in whey, with whole lactic whey. Characterization of the EPS was performed using Fourier transform infrared spectroscopy (FT-IR) and gas chromatography-mass spectrometry (GC-MS), while morphological analysis was conducted via scanning electron microscopy (SEM). This research aims to assess the feasibility of converting lactic whey into valuable EPS, providing a sustainable approach to managing this agro-industrial waste.
Results:
Lactic whey has produced the highest EPS and the FT-IR spectra revealed structural variations in the monomers which compose these polymers. Galactose and glucose were shown to be the primary monomers, according to GC-MS EPS analysis. SEM revealed a homogenous matrix and N. oleoabundans's bioflocculant characteristics.
Conclusions:
Microalgae N. oleoabundans can produce EPS using lactic whey as feedstock and it has the potential to be employed as a wastewater treatment.
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