Experimental characterization of two varieties of sunflower with potential for oil production extracted with hexane and isopropyl alcohol

Gallegos‐Infante, José Alberto; Rico-Martı́nez, Ramiro; Rocha‐Guzmán, Nuria Elizabeth; González‐Laredo, Rubén Francisco; Castro, Juliana Morales

doi:10.3989/gya.2003.v54.i3.238

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…Such disadvantages justify the study of alternatives to its use. Some substitutes for hexane have been studied in the extraction process, including acetone, ethanol, and isopropanol (Aquino, Borges, Queiroz, Antoniassi, & Cirillo, ; Aryee, Dutilleul, Paszti, & Simpson, ; Cuevas, Rodrigues, & Meirelles, ; Gallegos‐Infante, Rocha‐Guamán, González‐Laredo, Zuno‐Floriano, & Vidana Martínez, ; Li, Pordesimo, & Weiss, ; Proestos & Komaitis, ; Rodrigues, Volpato, Wada, & Ayub, ; Rodríguez‐Rojo, Visentin, Maestri, & Cocero, ; Rout, Sen, & Punniyamurthy, ; Sun, Li, & Wang, ; Toma, Vinatoru, Paniwnyk, & Mason, ; Zaixiang, Hongxin, Ming, & Zhouping, ).…”

Section: Introductionmentioning

confidence: 99%

Solvent effect on the extraction of soluble solids from murici and pequi seeds

Araújo

Oliveira²,

Menezes

et al. 2018

J Food Process Engineering

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The Brazilian cerrado has native species with great potential for use, like murici (Byrsonima crassifolia), and pequi (Caryocar brasiliense Camb). The seeds of these fruits are rich in oils and bioactive compounds. The extraction by solvent is widely used to extract oils from the seeds, being hexane the most used solvent in this process. The objective of this work was to evaluate the effect of alternative solvents on oil/soluble solids extraction efficiency and raffinate retention index of solvent extraction of pequi and murici seeds and thermodynamics parameters of the process, using organic green solvents (ethanol, isopropanol, and acetone) and hexane. The extraction has been performed in a shaker using three different temperatures (35, 45, and 55 °C) at the seed:solvent mass ratio of 1:5 (wt/wt). In the extraction with pure solvents the most efficient solvent for both seeds was hexane, at 55 °C, once greater yield and lower retention index were obtained for this condition, along with isopropanol, for pequi seeds. The thermodynamic analysis of the extraction process for both seeds demonstrated positive results to ΔH, and ΔS, and negative results to ΔG, showing the endothermic nature of the process and its spontaneity. Practical applications A great amount of seeds is daily being wasted from industries and households of an agricultural country like Brazil. In addition, the oil from murici and pequi seeds has enormous and important potential as an intermediate raw material for food and pharmaceutical industries. So, the present experimental study is composed of the recovery of the soluble solids from these fruits’ seeds through a cost‐effective method using green solvents, which are environmentally safe. For this purpose, pure ethanol, pure acetone, and pure isopropanol were used as solvents for the extraction process, and compared to the regular hexane. Parametric effects were also investigated on the extraction process to collect the data for the economic process design, and to encourage new researches.

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Section: Introductionmentioning

confidence: 99%

Solvent effect on the extraction of soluble solids from murici and pequi seeds

Araújo

Oliveira²,

Menezes

et al. 2018

J Food Process Engineering

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“…Some substitutes for hexane have been studied in the extraction process, including acetone, ethanol, and isopropanol (Toma et al, 2001;Gallegos-Infante et al, 2003;Li et al, 2004;Rout et al, 2007;Proestos and Komaitis, 2008;Cuevas et al, 2009;Zaixiang et al, 2010;Rodríguez-Rojo et al, 2012;Hu et al, 2016). Polar solvents can infiltrate the cell walls, allowing the extraction of substances that would not be extracted by apolar ones.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Cosolvent and Temperature Effects on Ethanolic Extraction of Pequi and Murici Seeds

2019

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One of the main products extracted from seeds is the oil, which have great importance in human food. They help in the absorption of fat-soluble vitamins and antioxidants. The oil extraction process can be carried out in different ways, being one of them the solvent extraction. Ethanol is a solvent with the potential to replace hexane, which is a renewable and non-toxic solvent. However, the oil shows low solubility in ethanol, and it is important to study cosolvents that may improve the solubility and yield of the oil extraction. A response surface methodology (RSM) was applied to optimize the ethanolic extraction using cosolvents. The soluble solids yield and the retention index from pequi and murici seeds extraction using ethanol and cosolvents (hexane and isopropanol) were estimated. Soluble solids greatest recovery was with 10% of each cosolvent at 45 °C, for both pequi and murici seeds. The low retention index obtained represents a greater efficiency in the extraction process, however, the empirical model did not describe this variable for murici seeds; and it was independent from the cosolvents mass fraction concerning the pequi almonds. Temperature was a parameter with high influence on the recovery of soluble solids and retention index of pequi and murici seeds solid-liquid extraction process. This paper provides a comprehensive approach to murici and pequi seeds waste oil production from an industrial perspective, by using biorenewable solvents, such as ethanol.

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