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Influence of antioxidants from pequi leaves on the thermal and oxidative stability of biodiesel.

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Title: Influence of antioxidants from pequi leaves on the thermal and oxidative stability of biodiesel.
Authors: Irineu, Ranuir Lucas de Oliveira1, Silva, Victor Juan Rodrigues da1, Nogueira, Josiane da Rocha Ferreira1, Merlo, Thais Cardoso2, Rial, Rafael Cardoso1 rafael.rial@ifms.edu.br
Source: Biofuels, Bioproducts & Biorefining. Sep2024, Vol. 18 Issue 5, p1385-1395. 11p.
Subject Terms: *Thermal stability, *Biodiesel fuels, *Antioxidants, *Thermogravimetry, *Critical temperature, *Terpenes, *Quality standards
Abstract: In this study, the efficacy of antioxidants found in pequi leaves was examined for safeguarding pequi biodiesel (EBP) against oxidation. The results reveal notable achievements. The antioxidant activity of AFP (a pequi leaf antioxidant additive) was assessed at various concentrations, demonstrating that as the concentration of AFP increases, the inhibition percentage significantly rises, reaching a remarkable inhibition of 99.12% at 100 mg L−1, with a calculated IC50 of 25.4 mg L−1. Additionally, the analysis of the AFP composition revealed the presence of terpenes and oxygenated compounds, which are well known for their antioxidant properties. Furthermore, the research emphasized the significance of thermogravimetric analysis in evaluating the thermal stability of additives, identifying critical temperatures at which AFP begins to protect biodiesel against oxidation (247.18°C) and the point at which its effectiveness may diminish (469.19°C). The EBP met quality standards regarding acidity, water content and density, but exhibited slightly lower oxidative stability compared with established standards. The correlation between the thermal degradation of biodiesel and the induction period highlighted the efficacy of AFP in mitigating thermal degradation. Nevertheless, it also indicated that maintaining biodiesel quality requires complementary approaches to minimize degradation over time. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Influence of antioxidants from pequi leaves on the thermal and oxidative stability of biodiesel.
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  Data: <searchLink fieldCode="AR" term="%22Irineu%2C+Ranuir+Lucas+de+Oliveira%22">Irineu, Ranuir Lucas de Oliveira</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Silva%2C+Victor+Juan+Rodrigues+da%22">Silva, Victor Juan Rodrigues da</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Nogueira%2C+Josiane+da+Rocha+Ferreira%22">Nogueira, Josiane da Rocha Ferreira</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Merlo%2C+Thais+Cardoso%22">Merlo, Thais Cardoso</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Rial%2C+Rafael+Cardoso%22">Rial, Rafael Cardoso</searchLink><relatesTo>1</relatesTo><i> rafael.rial@ifms.edu.br</i>
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  Data: <searchLink fieldCode="JN" term="%22Biofuels%2C+Bioproducts+%26+Biorefining%22">Biofuels, Bioproducts & Biorefining</searchLink>. Sep2024, Vol. 18 Issue 5, p1385-1395. 11p.
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  Data: *<searchLink fieldCode="DE" term="%22Thermal+stability%22">Thermal stability</searchLink><br />*<searchLink fieldCode="DE" term="%22Biodiesel+fuels%22">Biodiesel fuels</searchLink><br />*<searchLink fieldCode="DE" term="%22Antioxidants%22">Antioxidants</searchLink><br />*<searchLink fieldCode="DE" term="%22Thermogravimetry%22">Thermogravimetry</searchLink><br />*<searchLink fieldCode="DE" term="%22Critical+temperature%22">Critical temperature</searchLink><br />*<searchLink fieldCode="DE" term="%22Terpenes%22">Terpenes</searchLink><br />*<searchLink fieldCode="DE" term="%22Quality+standards%22">Quality standards</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In this study, the efficacy of antioxidants found in pequi leaves was examined for safeguarding pequi biodiesel (EBP) against oxidation. The results reveal notable achievements. The antioxidant activity of AFP (a pequi leaf antioxidant additive) was assessed at various concentrations, demonstrating that as the concentration of AFP increases, the inhibition percentage significantly rises, reaching a remarkable inhibition of 99.12% at 100 mg L−1, with a calculated IC50 of 25.4 mg L−1. Additionally, the analysis of the AFP composition revealed the presence of terpenes and oxygenated compounds, which are well known for their antioxidant properties. Furthermore, the research emphasized the significance of thermogravimetric analysis in evaluating the thermal stability of additives, identifying critical temperatures at which AFP begins to protect biodiesel against oxidation (247.18°C) and the point at which its effectiveness may diminish (469.19°C). The EBP met quality standards regarding acidity, water content and density, but exhibited slightly lower oxidative stability compared with established standards. The correlation between the thermal degradation of biodiesel and the induction period highlighted the efficacy of AFP in mitigating thermal degradation. Nevertheless, it also indicated that maintaining biodiesel quality requires complementary approaches to minimize degradation over time. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1002/bbb.2629
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 11
        StartPage: 1385
    Subjects:
      – SubjectFull: Thermal stability
        Type: general
      – SubjectFull: Biodiesel fuels
        Type: general
      – SubjectFull: Antioxidants
        Type: general
      – SubjectFull: Thermogravimetry
        Type: general
      – SubjectFull: Critical temperature
        Type: general
      – SubjectFull: Terpenes
        Type: general
      – SubjectFull: Quality standards
        Type: general
    Titles:
      – TitleFull: Influence of antioxidants from pequi leaves on the thermal and oxidative stability of biodiesel.
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            NameFull: Irineu, Ranuir Lucas de Oliveira
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            NameFull: Silva, Victor Juan Rodrigues da
      – PersonEntity:
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            NameFull: Nogueira, Josiane da Rocha Ferreira
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            NameFull: Merlo, Thais Cardoso
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            NameFull: Rial, Rafael Cardoso
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            – D: 01
              M: 09
              Text: Sep2024
              Type: published
              Y: 2024
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              Value: 18
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              Value: 5
          Titles:
            – TitleFull: Biofuels, Bioproducts & Biorefining
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