EVALUATION OF THE RELATIVE PROTECTION FACTOR OF ROSEMARY EXTRACT IN BIODIESEL IN THE PRESENCE OF TRANSITION METAL IONS
Biodiesel contains unsaturated methyl esters making it susceptible to oxidation reaction. Among the factors that cause oxidative instability is the contamination by transition metal ions that in small quantities catalyze the oxidation reaction. The objective of this work was to evaluate the relative...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Química
2020-10-01
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| Series: | Química Nova |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422020000901210&tlng=en |
| _version_ | 1818744466957139968 |
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| author | Kelly R. Spacino Hágata Cremasco Karina B. Angilelli Ana Carolina G. Mantovani Dionisio Borsato |
| author_facet | Kelly R. Spacino Hágata Cremasco Karina B. Angilelli Ana Carolina G. Mantovani Dionisio Borsato |
| author_sort | Kelly R. Spacino |
| collection | DOAJ |
| description | Biodiesel contains unsaturated methyl esters making it susceptible to oxidation reaction. Among the factors that cause oxidative instability is the contamination by transition metal ions that in small quantities catalyze the oxidation reaction. The objective of this work was to evaluate the relative protection factor of rosemary extract, in biodiesel, in the presence of transition metal ions. Chromatographic analysis and characterization of biodiesel were performed as well as the quantification of total phenolic compounds and extract activity. The ions Cr3+, Co2+ and Fe2+, at a concentration of 3.95 x 10-3 mol L-1, were added to the biodiesel with and without rosemary extract. The samples were submitted to the Rancimat test and to infrared region analyses. The infrared region spectra of the samples with Cr3+ are in accordance with the least catalytic power of this ion under the biodiesel oxidation. Samples with Co2+ ions, without extract, presented bands of aldehydes, and samples with Fe2+ ions show the formation of peroxide radicals, without rosemary extract at 48h. The antioxidant effect of the extract in biodiesel is observed by the reduction of the induction period of the samples. The relative protection factor proved to be a good tool to evaluate its efficiency. |
| first_indexed | 2024-12-18T02:44:46Z |
| format | Article |
| id | doaj.art-9baeee7ebf2f4638b366685e1e379c45 |
| institution | Directory Open Access Journal |
| issn | 1678-7064 |
| language | English |
| last_indexed | 2024-12-18T02:44:46Z |
| publishDate | 2020-10-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Química Nova |
| spelling | doaj.art-9baeee7ebf2f4638b366685e1e379c452022-12-21T21:23:34ZengSociedade Brasileira de QuímicaQuímica Nova1678-70642020-10-014391210121510.21577/0100-4042.20170610EVALUATION OF THE RELATIVE PROTECTION FACTOR OF ROSEMARY EXTRACT IN BIODIESEL IN THE PRESENCE OF TRANSITION METAL IONSKelly R. SpacinoHágata CremascoKarina B. AngilelliAna Carolina G. Mantovanihttps://orcid.org/0000-0001-8773-8072Dionisio Borsatohttps://orcid.org/0000-0003-2281-0242Biodiesel contains unsaturated methyl esters making it susceptible to oxidation reaction. Among the factors that cause oxidative instability is the contamination by transition metal ions that in small quantities catalyze the oxidation reaction. The objective of this work was to evaluate the relative protection factor of rosemary extract, in biodiesel, in the presence of transition metal ions. Chromatographic analysis and characterization of biodiesel were performed as well as the quantification of total phenolic compounds and extract activity. The ions Cr3+, Co2+ and Fe2+, at a concentration of 3.95 x 10-3 mol L-1, were added to the biodiesel with and without rosemary extract. The samples were submitted to the Rancimat test and to infrared region analyses. The infrared region spectra of the samples with Cr3+ are in accordance with the least catalytic power of this ion under the biodiesel oxidation. Samples with Co2+ ions, without extract, presented bands of aldehydes, and samples with Fe2+ ions show the formation of peroxide radicals, without rosemary extract at 48h. The antioxidant effect of the extract in biodiesel is observed by the reduction of the induction period of the samples. The relative protection factor proved to be a good tool to evaluate its efficiency.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422020000901210&tlng=encatalystChromiumCobaltIronoxidation reaction |
| spellingShingle | Kelly R. Spacino Hágata Cremasco Karina B. Angilelli Ana Carolina G. Mantovani Dionisio Borsato EVALUATION OF THE RELATIVE PROTECTION FACTOR OF ROSEMARY EXTRACT IN BIODIESEL IN THE PRESENCE OF TRANSITION METAL IONS Química Nova catalyst Chromium Cobalt Iron oxidation reaction |
| title | EVALUATION OF THE RELATIVE PROTECTION FACTOR OF ROSEMARY EXTRACT IN BIODIESEL IN THE PRESENCE OF TRANSITION METAL IONS |
| title_full | EVALUATION OF THE RELATIVE PROTECTION FACTOR OF ROSEMARY EXTRACT IN BIODIESEL IN THE PRESENCE OF TRANSITION METAL IONS |
| title_fullStr | EVALUATION OF THE RELATIVE PROTECTION FACTOR OF ROSEMARY EXTRACT IN BIODIESEL IN THE PRESENCE OF TRANSITION METAL IONS |
| title_full_unstemmed | EVALUATION OF THE RELATIVE PROTECTION FACTOR OF ROSEMARY EXTRACT IN BIODIESEL IN THE PRESENCE OF TRANSITION METAL IONS |
| title_short | EVALUATION OF THE RELATIVE PROTECTION FACTOR OF ROSEMARY EXTRACT IN BIODIESEL IN THE PRESENCE OF TRANSITION METAL IONS |
| title_sort | evaluation of the relative protection factor of rosemary extract in biodiesel in the presence of transition metal ions |
| topic | catalyst Chromium Cobalt Iron oxidation reaction |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422020000901210&tlng=en |
| work_keys_str_mv | AT kellyrspacino evaluationoftherelativeprotectionfactorofrosemaryextractinbiodieselinthepresenceoftransitionmetalions AT hagatacremasco evaluationoftherelativeprotectionfactorofrosemaryextractinbiodieselinthepresenceoftransitionmetalions AT karinabangilelli evaluationoftherelativeprotectionfactorofrosemaryextractinbiodieselinthepresenceoftransitionmetalions AT anacarolinagmantovani evaluationoftherelativeprotectionfactorofrosemaryextractinbiodieselinthepresenceoftransitionmetalions AT dionisioborsato evaluationoftherelativeprotectionfactorofrosemaryextractinbiodieselinthepresenceoftransitionmetalions |