Influence of Geographical Location of Spirulina (Arthrospira platensis) on the Recovery of Bioactive Compounds Assisted by Pulsed Electric Fields

Spirulina (Arthrospira platensis) has been consumed by humans since ancient times. It is rich in high added-value compounds such as chlorophylls, carotenoids and polyphenols. Pulsed electric fields (PEF) is an innovative non-thermal technique that improves the extraction of bioactive compounds from...

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Published in:Separations 2022-09, Vol.9 (9), p.257
Main Authors: Ramon-Mascarell, Francesc, Martí-Quijal, Francisco J., Castagnini, Juan Manuel, Phimolsiripol, Yuthana, Ruksiriwanich, Warintorn, Rajoka, Muhammad Shahid Riaz, Mehwish, Hafiza Mahreen, Barba, Francisco J.
Format: Article
Language:English
Subjects:
Algae
Antioxidants
Binary mixtures
bioactive compounds
Biological activity
Biomass
Carotenoids
Chemical properties
Chlorophyll
Electric fields
Environmental aspects
Ethanol
Food products
Geographical locations
PEF-assisted extraction
Phytochemicals
Polyphenols
Potassium
Pretreatment
Proteins
Recovery
Shaking
Solvents
Spirulina
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Summary:Spirulina (Arthrospira platensis) has been consumed by humans since ancient times. It is rich in high added-value compounds such as chlorophylls, carotenoids and polyphenols. Pulsed electric fields (PEF) is an innovative non-thermal technique that improves the extraction of bioactive compounds from diverse sources. PEF pre-treatment (3 kV/cm, 100 kJ/kg) combined with supplementary extraction with binary solvents at different times was evaluated to obtain the optimal conditions for extraction. In addition, the results obtained were compared with conventional treatment (without PEF pre-treatment and constant shaking) and different strains of Spirulina from diverse geographical locations. The optimal extraction conditions for recovering the bioactive compounds were obtained after applying PEF treatment combined with the binary mixture EtOH/H2O for 180 min. The recovery of total phenolic content (TPC) (19.76 ± 0.50 mg/g DM (dry matter) and carotenoids (0.50 ± 0.01 mg/g DM) was more efficient in the Spirulina from Spain. On the other hand, there was a higher recovery of chlorophylls in the Spirulina from China. The highest extraction of total antioxidant compounds was in Spirulina from Costa Rica. These results show that PEF, solvents and the condition of growing affect the extraction of antioxidant bioactive compounds from Spirulina. The combination of PEF and EtOH/H2O is a promising technology due to its environmental sustainability.
ISSN:2297-8739
2297-8739
DOI:10.3390/separations9090257