Improvement of Soybean Oil Solvent Extraction through Enzymatic Pretreatment

Abstract

The purpose of this study is to evaluate multienzyme hydrolysis as a pretreatment option to improve soybean oil solvent extraction and its eventual adaptation to conventional processes. Enzymatic action causes the degradation of the cell structures that contain oil. Improvements in terms of extraction, yield, and extraction rate are expected to be achieved. Soybean flakes and collets were used as materials and hexane was used as a solvent. Temperature, pH, and incubation time were optimized and diffusion coefficients were estimated for each solid. Extractions were carried out in a column, oil content was determined according to time, and a mathematical model was developed to describe the system. The optimum conditions obtained were pH 5.4, 38• C, and 9.7 h, and pH 5.8, 44• C, and 5.8 h of treatment for flakes and collets, respectively. Hydrolyzed solids exhibited a higher yield. Diffusion coefficients were estimated between 10 −11 and 10 −10 . The highest diffusion coefficient was obtained for hydrolyzed collets. 0.73 g oil/mL and 0.7 g oil/mL were obtained at 240 s in a column for collets and flakes, respectively. Hydrolyzed solids exhibited a higher yield. The enzymatic incubation accelerates the extraction rate and allows for higher yield. The proposed model proved to be appropriate.

Enzyme-assisted Solvent Extraction of High-yield <i>Paeonia suffruticosa</i> Andr. Seed Oil and Fatty Acid Composition and Anti-Alzheimer’s Disease Activity

“…The utilization of enzymatic pretreatment prior to solvent extraction can be attributed to the degradation of cellulose, pectin and protein, destroying the structural integrity of the seed cell wall and liberating more oils 47) . F R Mohamed revealed that enzymatic hydrolysis of goldenberry pomace oil followed by n-hexane extraction can shorten the extraction time and improve extraction efficiency 48) .…”

Untitled

“…Mass transfer is the process of mass transfer on the surface of particles and diffusion inside (Bandura et al, 2021). Recent studies on the improvement of extraction processes that can reduce the amount of energy consumed, use harmless alternative solvents, and ensure the production of a safe, benign extract product and the feasibility of using microwave technology are reported by the authors (Grasso et al, 2012).…”

Effect of Pretreatment Spent Coffee Ground with Natural Deep Eutectic Solvent (NADES) on Coffee Oil Yield

“…This aims to damage the cell wall (lignocellulose) so that the results of oil extraction will be maximized because the accessibility of the solvent into the analyte will be greater [7,8]. Pretreatment has been shown to increase the yield of oil extraction, for example in the extraction of castor oil [9], tomatoes [10], soybeans [11], and cumin [12]. Cell wall destruction can be done mechanically and non-mechanically.…”