Advanced search
Start date
Betweenand

Evaluation of different ethanol co-solvents for the oil extraction from soybean collets

Grant number: 22/02434-7
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): July 01, 2022
Effective date (End): June 30, 2023
Field of knowledge:Agronomical Sciences - Food Science and Technology - Food Engineering
Principal researcher:Christianne Elisabete da Costa Rodrigues
Grantee:Isabela Cecília Rodrigues Souza
Home Institution: Faculdade de Zootecnia e Engenharia de Alimentos (FZEA). Universidade de São Paulo (USP). Pirassununga , SP, Brazil
Associated research grant:14/21252-0 - Equilibrium and production processes of biofuels and bioproducts, AP.TEM

Abstract

The solvent commonly used in the industrial extraction of vegetable oils is a mixture of n-hexane isomers, which presents chemical stability and high extraction capacity of triacylglycerols. On the other hand, it has disadvantages such as high toxicity, flammability, and high polluting capacity when not properly recovered since it is of fossil origin. Due to the health and environmental risks associated with this solvent, other substances have been studied for the extraction of vegetable oils. Ethanol presents itself as one of the most promising alternative solvents since it is less toxic than hexane, can be obtained from renewable sources, presents great productivity at low cost in Brazil and, due to its greater polarity, can make it feasible to obtain oils enriched in nutraceutical compounds. However, some restrictions limit the industrialization of vegetable oil extraction with ethanol, because ethanol, compared to hexane, presents lower selectivity to triacylglycerols, higher cost of recovery for reuse in the process, and lower solubilization capacity of the oil. This last disadvantage implies the use of larger amounts of ethanol, when compared to hexane, to extract the same amount of vegetable oil from a solid matrix. The required flow rate of ethanol is about 280 % higher than the hexane flow rate, which may compromise the feasibility of the oil extraction process with the alternative renewable solvent. In this context, this undergraduate research project aims to evaluate the use of different compounds (fatty esters, fatty acids, and long-chain alcohols, among others) as co-solvents of ethanol aiming to increase the solubility of lipids. The mixed solvents (ethanol + co-solvent) will be evaluated in the extraction of oil from soybean collets, monitoring the extraction yield, the oil partitioning between extract and raffinate phases, and the nitrogen solubility index of the defatted protein fraction.(AU)

News published in Agência FAPESP Newsletter about the scholarship:
Articles published in other media outlets (0 total):
More itemsLess items
VEICULO: TITULO (DATA)
VEICULO: TITULO (DATA)

Please report errors in scientific publications list by writing to: cdi@fapesp.br.