Barros, Lillian

Caleja, Cristina

Lopes, Ana Isabel

Melo, Adma

Pereira, Eliana

Pintado, Manuela

Tavaria, Freni

English

Repositório Institucional da Universidade Católica Portuguesa

	New advances from PRIMA projectsfor improving MediterraneanAgro-Food value chainsABSTRACT BOOKNew advances from PRIMA projects for improving Mediterranean Agro-Food value chainsAbstract Book50  Painel 6 Elaboration and antimicrobial activity of films from plant residues incorporated with eucalyptus extract and oregano essential oil  Adma Melo1*, Ana Isabel Lopes1, Eliana Pereira2,3, Cristina Caleja2,3, Lillian Barros2,3, Freni Tavaria1, Manuela Pintado1 1 Universidade Católica Portuguesa, CBQF- Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal; 2 Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; 3 Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal. *corresponding e-mail address: admelo@ucp.pt   Plant agro-industrial residue have been studied as sources of polymeric matrices to develop films. The objective of this work was to develop films using plant biomass residue and evaluate the antimicrobial activity after addiction of the different antimicrobials. The films were developed from plant biomass residues, obtained from production of eucalyptus extract (EE) as a polymers source. The plant residue was characterized and films were developed using residue and alginate with the addition of natural antimicrobials oregano essential oil – OEO (2%), EE (1%) and the mix with OEO (1%) and EE (1%). Then, the antimicrobial activity of the films was tested against Staphylococcus aureus. The results showed that the residue consist, mostly of insoluble fibers from approximately 80%, with lignin being the main constituent from approximately 50%. The three films were able to completely inhibit the S. aureus after 6h of exposure of the film with bacteria. The developed films can be considered potential solutions to be applied as biodegradable active packaging. However, more studies are needed to support this hypothesis. In addition, the use of these residues for film’s production is a more sustainable alternative to the environment and even adds value to plant agro-industrial wastes.   Key words: plant residue, films, sustainable alternative   Acknowledgements: This work was financially supported by project BIOma - Soluções integradas de BIOeconomia para a Mobilização da cadeia Agroalimentar (POCI-01-0247-FEDER-046112) co-financed by Fundo Europeu de Desenvolvimento Regional (FEDER) through Programa Operacional Competitividade de Internacionalização (POCI). This research was also funded by National Funds from FCT - Fundação para a Ciência e a Tecnologia through projects UIDB/50016/2020 (CBQF), UIDB/00690/2020 and UIDP/00690/2020 (CIMO) and LA/P/0007/2021 (SusTEC).        

Elaboration and antimicrobial activity of films from plant residues incorporated with eucalyptus extract and oregano essential oil

https://repositorio.ucp.pt/bitstream/10400.14/41774/1/72858093.pdf

Elaboration and antimicrobial activity of films from plant residues incorporated with eucalyptus extract and oregano essential oil

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Repositório Institucional da Universidade Católica Portuguesa