Browsing by Author "Fabiane O. Farias"

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    Novel strategies for valorizing red araça pomace: Cyanidin-rich extracts recovery and sustainable bioenergy production
    (Institution of Chemical Engineers, 2025-01-14) Cassamo U. Mussagy; Henua U. Hucke; Fabiane O. Farias; Julia Tretin; Leonardo M. de Souza Mesquita; Mauricio A. Rostagno; Jérémy Valette; Mushtaq Ahmad; Ahmad Mustafa; Vijaya Raghavan; Diakaridia Sangaré
    This study investigates the valorization of red araçá pomace (RAP) from Easter Island (Rapa Nui) for extracting cyanidin-rich antioxidants and generating bioenergy. Using a UHPLC-PDA system, we characterized the extractable pigments, optimizing extraction conditions with bio-based solvents to achieve a maximum yield of 2.70 mg/L of cyanidin-3-O-glucoside, which constituted approximately 98 % of the extract. The antioxidant activity was evaluated using the DPPH and FRAP assay, revealing a strong antioxidant capacity. Additionally, pyrolysis of the residual colorless biomass indicated significant energy recovery potential, with thermodynamic analysis showing an energy difference of less than 4.67 kJ/mol between activation energy and enthalpy. This pioneering research highlights the dual benefits of utilizing RAP for health-promoting compounds while addressing waste management through sustainable bioenergy solutions.
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    Techno-economic insights into one-pot bacterial astaxanthin extraction and sustainable therapeutic product development using natural solvent mixtures
    (Elsevier B.V, 2025-01-01) Cassamo U. Mussagy; Nataly F. Ramos; Angie V. Caicedo-Paz; Fabiane O. Farias; Ana Luísa R. Gini; Cau ˆ e B. Scarim; Paulo E. L. L. Filho; Rondinelli D. Herculano; M. Shaaban Sadek; Mushtaq Ahmad; Ahmad Mustafa; Laurent Dufossé
    The increasing demand for sustainable and safe products is driving the replacement of synthetic pigments with natural alternatives in the cosmetics industry. Additionally, the use of green solvents, such as natural solvent mixtures (NaSoMix), is essential to minimize the environmental impact of extraction processes. This study explores the innovative application of NaSoMix for extracting astaxanthin-rich extracts (ARE) from the bacterium Paracoccus carotinifaciens, a promising source of natural colorants and antioxidants. By employing menthol-based natural deep eutectic solvents (NaDES) combined with bio-based solvents, viz., ethyl acetate and ethanol, the research achieved remarkable ARE extraction yields of up to 1.3 mg/mL using conventional procedures. Notably, process intensification through microwave-assisted extraction resulted in a 400 % increase in ARE recovery yields compared to traditional methods. The therapeutic soaps formulated with these ARE extracts exhibited significant antioxidant activity, achieving a 75 % reduction in DPPH• free radical signals, and maintained excellent color stability over a month, with minimal perceptual changes. Safety assessments confirmed the non-irritating properties of the therapeutic soaps, with an irritation score of 0 at low ARE concentrations. Furthermore, an economic analysis revealed a highly favorable Internal Rate of Return (IRR) of 183 % and a Return on Investment (ROI) of 2890 %, underscoring the commercial viability of this sustainable approach. Overall, this study highlights the effectiveness and safety of utilizing NaSoMix for extracting high-value compounds and formulating innovative therapeutic cosmetic products, aligning with consumer preferences for natural ingredients while promoting environmental sustainability and economic feasibility.