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Comparison of green solvents for the revalorization of orange by-products
Orientador(es)
Resumo(s)
Orange peels contain a considerable number of bioactive compounds such as carotenoids, that can be used as ingredients in high-value products. The aim of this study was to compare orange peel extracts obtained with different green solvents (vegetable oils, fatty acids, and deep eutectic solvents (DES)). In addition, the chemical characterization of a new hydrophobic DES formed by octanoic acid and L-proline (C8:Pro) was performed. The extracts were compared in terms of carotenoid extraction, antioxidant activity by three methods, color, and environmental impact. The results confirmed that the mixture of C8:Pro is a DES and showed the highest carotenoid extraction (46.01 µg/g) compared to hexane (39.28 µg/g). The antioxidant activity was also the highest in C8:Pro (2438.8 µM TE/mL). Finally, two assessment models were used to evaluate the greenness and sustainability of the proposed extractions. These results demonstrated the potential use of orange peels in the circular economy and industry.
Descrição
Funding Information: This work was financially supported by the Ministry of Science and Innovation (Spain) -State Research Agency (PID- 2019-111331RB-I00/AEI/10.13039/501100011033) and by “Generación Bicentenario” scholarship from the Ministry of Education of the Republic of Peru (PRONABEC). Agricultural Cooperative Sant Bernat from Carlet, Spain, donated the raw materials. Publisher Copyright: © 2024 The Author(s)
Palavras-chave
Antioxidants Carotenoids Deep eutectic solvents Green extraction Orange by-products Analytical Chemistry Food Science SDG 8 - Decent Work and Economic Growth SDG 12 - Responsible Consumption and Production