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Valorization of Agro-Industrial Residues: Bioprocessing of Animal Fats to Reduce Their Acidity

2021Journal article Open access
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dc.contributor.authorMartins, António A.
dc.contributor.authorAndrade, Soraia
dc.contributor.authorCorreia, Daniela
dc.contributor.authorMatos, Elisabete
dc.contributor.authorCaetano, Nídia
dc.contributor.authorMata, Teresa M.
dc.date.accessioned2022-05-02T13:38:29Z
dc.date.available2022-05-02T13:38:29Z
dc.date.issued2021
dc.description.abstractAdding value to agro-industrial residues is becoming increasingly important, satisfying needs to promote resources’ use efficiency and a more sustainable and circular economy. This work performs a parametric and kinetic study of enzymatic esterification of lard and tallow with high acidity, obtained by the rendering of slaughter by-products, allowing their use as a feed ingredient and increasing their market value. After an initial analysis of potential enzyme candidates, a Candida antarctica lipase B was selected as a biocatalyst for converting free fatty acids (FFA) to esters, using excess ethanol as the reagent. Results show that the fat acidity can be reduced by at least 67% in up to 3 h of reaction time at 45 °C, using the mass ratios of 3.25 ethanol/FFA and 0.0060 enzyme/fat. Kinetic modelling shows an irreversible second-order rate law, function of FFA, and ethanol concentration better fitting the experimental results. Activation energy is 54.7 kJ/mol and pre-exponential factor is 4.6 × 106 L mol−1 min−1pt_PT
dc.description.sponsorshipThis work was financially supported by project PP-IJUP2014-SOJA DE PORTUGAL; Base Funding—UIDB/00511/2020 of Laboratory for Process Engineering, Environment, Bio-technology and Energy—LEPABE—funded by National funds through the FCT/MCTES (PIDDAC); Base Funding— UIDB/04730/2020 of Center for Innovation in Engineering and Industrial Technology, CIETI—funded by national funds through the FCT/MCTES (PID-DAC); António Martins thanks FCT (Fundação para a Ciência e Tecnologia) for funding through program DL 57/2016—Norma transitória.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMartins AA, Andrade S, Correia D, Matos E, Caetano NS, Mata TM. Valorization of Agro-Industrial Residues: Bioprocessing of Animal Fats to Reduce Their Acidity. Sustainability. 2021; 13(19):10837. https://doi.org/10.3390/su131910837pt_PT
dc.identifier.doi10.3390/su131910837pt_PT
dc.identifier.issn2071-1050
dc.identifier.urihttp://hdl.handle.net/10400.22/20428
dc.language.isoengpt_PT
dc.publisherMDPIpt_PT
dc.relationLaboratory for Process Engineering, Environment, Biotechnology and Energy
dc.relationCenter for Innovation in Industrial Engineering and Technology
dc.relation.publisherversionhttps://www.mdpi.com/2071-1050/13/19/10837pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectAnimal fatspt_PT
dc.subjectAcidity reductionpt_PT
dc.subjectCircular economypt_PT
dc.subjectLipozyme CALB Lpt_PT
dc.subjectIndustrial conditionspt_PT
dc.subjectReaction kineticspt_PT
dc.titleValorization of Agro-Industrial Residues: Bioprocessing of Animal Fats to Reduce Their Aciditypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleLaboratory for Process Engineering, Environment, Biotechnology and Energy
oaire.awardTitleCenter for Innovation in Industrial Engineering and Technology
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00511%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04730%2F2020/PT
oaire.citation.issue19pt_PT
oaire.citation.startPage10837pt_PT
oaire.citation.titleSustainabilitypt_PT
oaire.citation.volume13pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameCaetano
person.givenNameNídia
person.identifierR-000-DJC
person.identifier.ciencia-id1F1D-73E2-BFBF
person.identifier.orcid0000-0002-2185-6401
person.identifier.ridI-3934-2012
person.identifier.scopus-author-id55901684900
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication.latestForDiscovery4bbb44e7-228a-48fb-abc2-8df5e27d0b48
relation.isProjectOfPublication91d78e37-86f6-4b16-8aa1-079e151dc542
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