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Advisor(s)
Abstract(s)
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.
Description
Keywords
Pressurized liquid extraction Ultrasound-assisted extraction 1,2-alkanediols Glycerol ethers Anthocyanins Product formulation
Pedagogical Context
Citation
Soares, Bruna de Paula; Ferreira, Ana M.; Justi, Marina; Rodrigues, Luiz G.G.; Oliveira, José V.; Pinho, Simão; Coutinho, João A.P. (2023). Juçara fruit (Euterpe Edulis Martius) valorization combining emergent extraction technologies and aqueous solutions of alkanediols. Molecules. ISSN 1420-3049. 28:4, p. 1-22
Publisher
MDPI