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Recovery of citric acid from Citrus peels: ultrasound-assisted extraction optimized by response surface methodology

2022Journal article Open access
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dc.contributor.authorFernandes, Filipa Alexandra
dc.contributor.authorHeleno, Sandrina A.
dc.contributor.authorPinela, José
dc.contributor.authorCarocho, Márcio
dc.contributor.authorPrieto Lage, Miguel A.
dc.contributor.authorFerreira, Isabel C.F.R.
dc.contributor.authorBarros, Lillian
dc.date.accessioned2011-05-27T12:31:58Z
dc.date.available2011-05-27T12:31:58Z
dc.date.issued2022
dc.description.abstractThe production of citrus juice generates a large quantity of by-products, which are often discarded or used for animal feed. However, several studies have shown its richness in valuable compounds, namely organic acids. Thus, this work intended to valorize orange and lime peels as renewable sources of citric acid. An experimental design combining five levels of the independent variables time (2–45 min), ultrasonic power (50–500 W), and ethanol proportion (0–100%) was implemented and response surface methodology (RSM) was applied to optimize the extraction process. The UPLC-PDA analysis showed that orange peel presented a higher citric acid content than lime. For lime and orange peels, the extraction yield was maximized by sonicating at low power for 5.8 or 35.5 min, using a low ethanol proportion or only water as a solvent, respectively. Overall, optimal UAE conditions were defined for the sustainable extraction of citric acid from citrus by-products, thus contributing to its valorization and upcycling into natural food ingredients.por
dc.identifier.citationFernandes, Filipa Alexandra; Heleno, Sandrina A; Pinela, José; Carocho, Márcio; Prieto, Miguel A.; Ferreira, Isabel C.F.R.; Barros, Lillian. (2022) Recovery of citric acid from Citrus peels: ultrasound-assisted extraction optimized by response surface methodology. Chemosensors. EISSN 2227-9040. 10:7, p. 1-11por
dc.identifier.issn2227-9040
dc.identifier.urihttp://hdl.handle.net/10198/4651
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherMDPIpor
dc.subjectCitrus peelspor
dc.subjectResponse surface methodologypor
dc.subjectCitric acidpor
dc.subjectBiowaste valorizationpor
dc.titleRecovery of citric acid from Citrus peels: ultrasound-assisted extraction optimized by response surface methodologypor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleChemosensorspor
person.familyNameFernandes
person.familyNameHeleno
person.familyNamePinela
person.familyNameCarocho
person.familyNamePrieto Lage
person.familyNameFerreira
person.familyNameBarros
person.givenNameFilipa Alexandra
person.givenNameSandrina A.
person.givenNameJosé
person.givenNameMárcio
person.givenNameMiguel A.
person.givenNameIsabel C.F.R.
person.givenNameLillian
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rcaap.rightsopenAccesspor
rcaap.typearticlepor
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