Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/86571
Registo completo
Campo DC | Valor | Idioma |
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dc.contributor.author | Santos, Joana | por |
dc.contributor.author | Castro, Tarsila Gabriel | por |
dc.contributor.author | Venâncio, Armando | por |
dc.contributor.author | Silva, C. | por |
dc.date.accessioned | 2023-09-26T09:04:33Z | - |
dc.date.available | 2023-09-26T09:04:33Z | - |
dc.date.issued | 2023-09-06 | - |
dc.identifier.citation | Santos, J., Castro, T., Venâncio, A., & Silva, C. (2023, September). Degradation of ochratoxins A and B by lipases: A kinetic study unraveled by molecular modeling. Heliyon. Elsevier BV. http://doi.org/10.1016/j.heliyon.2023.e19921 | por |
dc.identifier.issn | 2405-8440 | por |
dc.identifier.uri | https://hdl.handle.net/1822/86571 | - |
dc.description.abstract | Mycotoxins are toxic substances produced by fungi and, frequently, different mycotoxins cooccur in food commodities. Ochratoxin A (OTA) and Ochratoxin B (OTB) may co-occur in a variety of foods, like red wines and wheat, presenting a significant risk of population exposure. In this study, we investigated the potential of five lipases (Candida rugosa Lipase, Candida antarctica B Lipase, Thermomyces lanuginosus Lipase, Amano Lipase A from Aspergillus niger (ANL) and Porcine Pancreas Lipase (PPL)) to hydrolyze OTA and OTB into non-hazardous products. Only ANL and PPL degraded both substrates, however, with varying degrees of efficiency. PPL completely degraded OTB (9h), but only 43% of OTA (25h). Molecular simulations indicated a high binding energy of OTA to PPL, that can be explained by the impact of the chlorine group, impairing hydrolysis. ANL was able to completely degrade both mycotoxins, OTA in 3h and OTB in 10h. The ANL enzyme showed also high specificity to OTA, however, the activity of this enzyme is not affected by chlorine and hydrolyzes OTA faster than OTB. These two enzymes were found to be able to detoxify co-occurring ochratoxins A and B, making isolated enzymes an alternative to the direct use of microorganisms for mycotoxin mitigation in food. | por |
dc.description.sponsorship | This study was supported by the Portuguese Foundation for Science and Technology (FCT), under the scope of the strategic funding of UIDB/04469/2020 and UIDP/04469/2020. Joana Santos also thanks to FCT for funding (UI/BD/152286/2021). | por |
dc.language.iso | eng | por |
dc.publisher | Elsevier BV | por |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04469%2F2020/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04469%2F2020/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/OE/UI%2FBD%2F152286%2F2021/PT | por |
dc.rights | openAccess | por |
dc.subject | Enzymatic hydrolysis | por |
dc.subject | Toxicity | por |
dc.subject | Ochratoxin A | por |
dc.subject | Ochratoxin B | por |
dc.subject | Non-hazardous products | por |
dc.title | Degradation of ochratoxins A and B by lipases: A kinetic study unraveled by molecular modeling | por |
dc.type | article | - |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S2405844023071293 | por |
dc.comments | CEB56405 | por |
oaire.citationStartPage | e19921 | por |
oaire.citationIssue | 9 | por |
oaire.citationConferencePlace | Netherlands | - |
oaire.citationVolume | 9 | por |
dc.date.updated | 2023-09-25T08:16:08Z | - |
dc.identifier.eissn | 2405-8440 | por |
dc.identifier.doi | 10.1016/j.heliyon.2023.e19921 | por |
dc.description.publicationversion | info:eu-repo/semantics/publishedVersion | - |
sdum.journal | Heliyon | por |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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document_56405_1.pdf | 2,21 MB | Adobe PDF | Ver/Abrir |