Work

Optimization of Biopigment Extraction from Dunaliella salina Using Ultrasound: Perspectives for Microalgal Biorefineries

Year: 2025

Type: article

Abstract: Natural pigments of microbial origin have attracted industrial interest due to their safety profile, environmental compatibility, and lack of carcinogenic effects. This study aimed to optimize the extraction of chlorophylls and carotenoids from Dunaliella salina, which was cultivated in bubble column photobioreactors, followed by biomass harvesting and ethanol‐based extraction assisted by probe ultrasound. A 22 factorial design was used to assess the effects of extraction time and ultrasound cycle. Results showed that extraction time significantly influenced all pigment extraction, favoring shorter durations, whereas the cycle was significant only for chlorophylls. The extraction conditions also enabled the recovery of β‐carotene, indicating a substantial production of pigments.

Source: Chemical Engineering & Technology

DOI: 10.1002/ceat.70094

Authors: Vitor Bertolassi Hidalgo, Fellipe Cesar Cardoso de Souza Felix, Patrícia Caroline Molgero Da Rós

Institution: Universidade de São Paulo

Language: English

Topic: Algal biology and biofuel production

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDG: Responsible consumption and production

Open Access status: bronze

Funders: Fundação de Amparo à Pesquisa do Estado de São Paulo, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Conselho Nacional de Desenvolvimento Científico e Tecnológico