Juçara fruit (Euterpe Edulis Martius) valorization combining emergent extraction technologies and aqueous solutions of alkanediols

• Autor(a) principal: Soares, Bruna de Paula
• Data de Publicação: 2023
• Outros Autores: Ferreira, Ana M., Justi, Marina, Rodrigues, Luiz G.G., Oliveira, José V., Pinho, Simão, Coutinho, João A.P.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10198/29049
• topic: Pressurized liquid extraction; Ultrasound-assisted extraction; 1,2-alkanediols; Glycerol ethers; Anthocyanins; Product formulation

Anthocyanins from juçara fruits were extracted by pressurized liquid extraction (PLE) or ultrasound-assisted extraction (UAE), using aqueous solutions of 1,2-alkanediols and glycerol ethers as biobased solvents. The PLE (100 bar, 13 min, 1 mL/min flow rate) in the optimal extraction conditions originated 23.1 mganthocyanins gdry biomass -1. On the other hand, the UAE was 10 min long, and the optimal conditions using 1,2-propanediol were 42.6 wt%, 160 W, and pH 7.0, leading to 50 mganthocyanins gdry biomass 1. Extractions at the UAE optimized conditions, with aqueous solutions of five different 1,2-alkanediols and three glycerol ethers were performed, and compared to water and ethanolic extracts. The biobased solvent solutions presented anthocyanin yields up to 33% higher than water, and were shown to be as efficient as ethanol/water, but generated extracts with higher antioxidant capacity. The anthocyanin-rich extract of juçara, obtained with 1,2-propanediol, was used in the production of a natural soap and incorporated into a cream, showing that the addition of the juçara extract resulted in an antioxidant capacity in both products.