TY - JOUR
T1 - Comparison of green solvents for the revalorization of orange by-products
T2 - Carotenoid extraction and in vitro antioxidant activity
AU - Viñas-Ospino, Adriana
AU - Rita Jesus, Ana
AU - Paiva, Alexandre
AU - Esteve, Maria J.
AU - Frígola, Ana
AU - Blesa, Jesús
AU - López-Malo, Daniel
N1 - 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)
PY - 2024/6/1
Y1 - 2024/6/1
N2 - 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.
AB - 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.
KW - Antioxidants
KW - Carotenoids
KW - Deep eutectic solvents
KW - Green extraction
KW - Orange by-products
UR - http://www.scopus.com/inward/record.url?scp=85184996098&partnerID=8YFLogxK
U2 - 10.1016/j.foodchem.2024.138530
DO - 10.1016/j.foodchem.2024.138530
M3 - Article
C2 - 38271911
AN - SCOPUS:85184996098
SN - 0308-8146
VL - 442
JO - Food Chemistry
JF - Food Chemistry
M1 - 138530
ER -