African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12179

Full Length Research Paper

Characterization of biodiesel obtained from atemoya (Annona squamosa × A. cherimola) seed oil

Luciana Soares Da Cruz
  • Luciana Soares Da Cruz
  • Departamento de Química, Universidade Federal de Lavras (UFLA), Campus Universitário, Caixa Postal 3037, CEP 37200-000, Lavras - MG, Brazil.
  • Google Scholar
Bárbara Lemes Outeiro Araújo
  • Bárbara Lemes Outeiro Araújo
  • Departamento de Engenharia Agrícola, Universidade Federal de Lavras (UFLA), Campus Universitário, Caixa Postal 3037, CEP 37200-000, Lavras - MG, Brazil.
  • Google Scholar
Luiz Roberto Marques Albuquerque
  • Luiz Roberto Marques Albuquerque
  • Departamento de Química, Universidade Federal de Lavras (UFLA), Campus Universitário, Caixa Postal 3037, CEP 37200-000, Lavras - MG, Brazil.
  • Google Scholar
Pedro Castro Neto
  • Pedro Castro Neto
  • Departamento de Engenharia Agrícola, Universidade Federal de Lavras (UFLA), Campus Universitário, Caixa Postal 3037, CEP 37200-000, Lavras - MG, Brazil.
  • Google Scholar
Angelita Duarte Corrêa
  • Angelita Duarte Corrêa
  • Departamento de Química, Universidade Federal de Lavras (UFLA), Campus Universitário, Caixa Postal 3037, CEP 37200-000, Lavras - MG, Brazil.
  • Google Scholar
Luciana de Matos Alves Pinto
  • Luciana de Matos Alves Pinto
  • Departamento de Química, Universidade Federal de Lavras (UFLA), Campus Universitário, Caixa Postal 3037, CEP 37200-000, Lavras - MG, Brazil.
  • Google Scholar


  •  Received: 25 November 2015
  •  Accepted: 30 September 2016
  •  Published: 14 February 2018

Abstract

Biodiesel is derived from renewable sources, such as vegetable oils, by means of a transesterification process in which triacylglycerols are transformed into smaller molecules of esters of fatty acids and glycerol. The transesterification reactions of ‘Gefner’ atemoya (Annona squamosa × A. cherimola) seed oil extracted by pressing (physical) and solvent (chemical) processes were studied, with analysis of the methyl esters produced. The reactions were monitored using gas chromatography coupled to mass spectrometry (GC-MS), as well as by hydrogen nuclear magnetic resonance spectroscopy (1H-NMR). The methyl esters formed during the transesterification reaction with methanol were determined for each oil. The major methyl esters (16:0, 18:0, 18:1 and 18:2) formed during 50 min of reaction were similar to those reported in the literature for other biodiesels; the peak areas and retention times were also similar. No changes in signal intensity over time were observed for the oils obtained by the two extraction methods. It was also noted that the extraction method had no influence on the types of methyl esters formed during biodiesel production.

Key words: Annona, oil extraction, transesterification.