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Curcuma Longa L. vegetable oil characterization as cutting fluid base and Curcuma Longa L. essential oil antimicrobial properties analysis for machining application

2020Master thesis Open access
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datacite.subject.fosEngenharia e Tecnologia::Outras Engenharias e Tecnologiaspt_PT
dc.contributor.advisorRibeiro, J.E.
dc.contributor.advisorGonçalvez, Janaina Fracaro de Souza
dc.contributor.authorSoares, Cinthia Harumi Endo
dc.date.accessioned2021-02-05T14:05:07Z
dc.date.available2021-02-05T14:05:07Z
dc.date.issued2020
dc.date.submitted2019
dc.descriptionMestrado de dupla diplomação com a UTFPR - Universidade Tecnológica Federal do Paraná
dc.description.abstractThe global demand for lubricants is around 40 million tons and about 40% of that production is lost in processes or accidents. This high demand and waste makes it inevitable to consider another possibility of replacing mineral oil-based lubricants with a renewable source. Many techniques are being developed to achieve more sustainable alternatives, so the production of biolubricants from vegetable oils is a promising market due to its biodegradability and large number of sources. This work aims to investigate the vegetable oil of Curcuma Longa L. as a potential lubricant base and the essential oil of Curcuma Longa L. as a potential biocidal additive, both for machining applications. The method proposes to evaluate the physicochemical properties of vegetable oil of Curcuma Longa L. related to the characteristics of the lubricant (viscosity, thermal stability and wettability) and to evaluate the biocidal activity of three commercial essential oils of Curcuma Longa L using minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC) and disk diffusion. From the results, the vegetable oil Curcuma Longa L. showed high viscosity value, high wettability for 1045 steel and aluminum and good thermal stability, promising characteristics to be used as a lubricant base and only one essential oil showed good biocidal activity against Klebsiella pneumoniae and Staphylococcus aureus, which indicates that different sources can lead to different bactericidal activities. It is concluded that the oils extracted from the Curcuma Longa L. plant have the potential to be used as a biolubricant.pt_PT
dc.identifier.tid202606767pt_PT
dc.identifier.urihttp://hdl.handle.net/10198/23246
dc.language.isoengpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectVegetable oilspt_PT
dc.subjectCutting fluidspt_PT
dc.subjectMachiningpt_PT
dc.subjectEssential oilspt_PT
dc.subjectAntimicrobialpt_PT
dc.subjectCurcumapt_PT
dc.titleCurcuma Longa L. vegetable oil characterization as cutting fluid base and Curcuma Longa L. essential oil antimicrobial properties analysis for machining applicationpt_PT
dc.typemaster thesis
dspace.entity.typePublication
rcaap.rightsopenAccesspt_PT
rcaap.typemasterThesispt_PT
thesis.degree.nameEngenharia Industrialpt_PT

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