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Article

Analytical Characterization of Water-Soluble Constituents in Olive-Derived By-Products

Advanced Biofuels and Bioproducts Unit, Department of Energy—CIEMAT, Avda. Complutense 40, 28040 Madrid, Spain
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Author to whom correspondence should be addressed.
Both authors contributed equally to this work.
Academic Editors: Cosima Damiana Calvano and Antonia Tamborrino
Foods 2021, 10(6), 1299; https://doi.org/10.3390/foods10061299
Received: 21 April 2021 / Revised: 2 June 2021 / Accepted: 4 June 2021 / Published: 5 June 2021
Olive trees constitute one of the largest agroindustries in the Mediterranean area, and their cultivation generates a diverse pool of biomass by-products such as olive tree pruning (OTP), olive leaves (OL), olive stone (OS), and extracted olive pomace (EOP). These lignocellulosic materials have varying compositions and potential utilization strategies within a biorefinery context. The aim of this work was to carry out an integral analysis of the aqueous extractives fraction of these biomasses. Several analytical methods were applied in order to fully characterize this fraction to varying extents: a mass closure of >80% was reached for EOP, >76% for OTP, >65% for OS, and >52% for OL. Among the compounds detected, xylooligosaccharides, mannitol, 3,4-dihydroxyphenylglycol, and hydroxytyrosol were noted as potential enhancers of the valorization of said by-products. The extraction of these compounds is expected to be more favorable for OTP, OL, and EOP, given their high extractives content, and is compatible with other utilization strategies such as the bioconversion of the lignocellulosic fraction into biofuels and bioproducts. View Full-Text
Keywords: olive tree; water-soluble extractives; olive tree pruning; olive leaves; olive stones; extracted olive pomace olive tree; water-soluble extractives; olive tree pruning; olive leaves; olive stones; extracted olive pomace
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MDPI and ACS Style

Doménech, P.; Duque, A.; Higueras, I.; Fernández, J.L.; Manzanares, P. Analytical Characterization of Water-Soluble Constituents in Olive-Derived By-Products. Foods 2021, 10, 1299. https://doi.org/10.3390/foods10061299

AMA Style

Doménech P, Duque A, Higueras I, Fernández JL, Manzanares P. Analytical Characterization of Water-Soluble Constituents in Olive-Derived By-Products. Foods. 2021; 10(6):1299. https://doi.org/10.3390/foods10061299

Chicago/Turabian Style

Doménech, Pablo, Aleta Duque, Isabel Higueras, José L. Fernández, and Paloma Manzanares. 2021. "Analytical Characterization of Water-Soluble Constituents in Olive-Derived By-Products" Foods 10, no. 6: 1299. https://doi.org/10.3390/foods10061299

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