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Extraction of valuable compounds from Arthrospira platensis using pulsed electric field treatment
- Jaeschke, Débora Pez, Mercali, Giovana Domeneghini, Marczak, Ligia Damasceno Ferreira, Müller, Georg, Frey, Wolfgang, Gusbeth, Christian
- Bioresource technology 2019 v.283 pp. 207-212
- Arthrospira platensis, antioxidant activity, antioxidants, cell biology, electric field, milling, phycocyanin, pulsed electric fields
- Pulsed electric field (PEF) treatment was evaluated for phycocyanin and proteins extraction from Arthrospira platensis (Spirulina platensis). PEF extractions were performed using different specific energies (28, 56 and 122 J·ml−1 of suspension) and the results were compared to the extraction with bead milling. At highest PEF-treatment energies a damage of the cell morphology could be observed and the highest yields (up to 85.2 ± 5.7 mg·g−1 and 48.4 ± 4.4 g·100 g−1 of phycocyanins and proteins, respectively) could be obtained at 122 and 56 J·ml−1. The yields increased with incubation time after PEF-treatment. The antioxidant capacity of the extracts obtained after PEF-treatment was higher than of those obtained after bead milling. PEF treatment is a promising technology to obtain blue-green antioxidant extracts from A. platensis in an environmental friendly process.