Investigating the influence of pinhão manso (Jatropha curcas) seed endocarp on the acidity index of the extracted oil

Authors

DOI:

https://doi.org/10.14393/BJ-v37n0a2021-53827

Keywords:

Endocarp, Extraction, Fatty acids, Endocarp. Seed. Extraction. Neutralization. Fatty acids. Jatropha curcas., Neutralization, Seed.

Abstract

Biodiesel is a clean and cyclical energy resource that is derived from animal and/or vegetable fat. As it blends well with petrodiesel, biodiesel is added to Brazilian commercial diesel. The main raw materials used to produce biodiesel in Brazil include soybean, corn, and sunflower oils. However, these are also used for human consumption and hence, have a high market value. Therefore, pinhão manso oil, which exhibits high productivity at low cost, is a promising alternative. However, the high acidity index of this oil results in a low transesterification yield and the produced biofuel does not meet the requirements imposed by the ANP. Thus, this study intends to demonstrate that a large part of the free fatty acids in pinion oil are present in the seed endocarp. For the development of the project, the oil was extracted by hot solvent, using the soxhlet equipment and the hexane solvent, to determine the acidity index, the titration technique was used, the titrant used was sodium hydroxide. So the acidity index of the oil extracted from the seed with its shell is 10.9 mgKOH/g, while the lipid obtained without the shell exhibits a value of 0.95 mgKOH/g, proving the influence of the endocarp.

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References

KOHLHEPP, G. Análise da situação da produção de etanol e biodiesel no Brasil. Estudos Avançados. 2010, 24(68), 223-253. http://dx.doi.org/10.1590/s0103-40142010000100017

OSAKI, M. Produção de biodiesel e óleo vegetal no brasil: realidade e desafio. Organizações Rurais & Agroindustriais. 2011, 13(2), 227-242.

PORTELA, F.M. Efeito da catálise ácida e alcalina na produção e propriedades físico-químicas do biodiesel metílico de pinhão-manso. Dissertation (Master's). Uberlândia: Universidade Federal de Uberlândia, 2011.

LIMA, M.L.Bde. Pinhão manso como alternativa para produção de biodiesel. Revista Acsa. 2021, 8(4), 1-7.

GARCIA, D.C., BARROS, A.C.S.A., PESKE, S.T. and MENEZES, N.L. A secagem de sementes. Ciência Rural. 2004, 34(2), 603-608. http://dx.doi.org/10.1590/s0103-84782004000200045

FARIA, R.Q., et al. Cinética de secagem de sementes de crambe. Revista Brasileira de Engenharia Agrícola e Ambiental. 2012, 16(5), 30-37. https://doi.org/10.1590/S1415-43662012000500014

MELHORANÇA, A.L., SILVA, J.I.C. and PEREIRA, M.R.R. Potencialidade energética em diferentes extratores e tempos de extração do óleo de pinhão-manso (Jatropha curcas L.) em soxletter. Bioscience Journal. 2010, 26(2), 226-230.

SANTOS, G.M. Determinação do índice de acidez em óleos de soja comercializados em supermercados varejistas. Funvic Electronic Magazine. 2017, 14(11), 2-6.

ITOKAGI, D.M. Neutralization of free fatty acids in soft weather and temperature conditions. Proceedings of the IFMT. 2017, 1(1), 71-74.

SILVA, T.A.R. and NETO, B.W. Study of reduction the acidity from residual oil for biodiesel production using fractional factorial design. Revista Virtual de Química. 2013, 5(5), 828-839. http://dx.doi.org/10.5935/1984-6835.20130060

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Published

2021-12-29

How to Cite

VAZ PINHEIRO NETO, J., 2021. Investigating the influence of pinhão manso (Jatropha curcas) seed endocarp on the acidity index of the extracted oil. Bioscience Journal [online], vol. 37, pp. e37078. [Accessed14 August 2022]. DOI 10.14393/BJ-v37n0a2021-53827. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/53827.

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Section

Agricultural Sciences