INFORM April 2025

EXTRACTS & DISTILLATES

inform April 2025, Vol. 36 (4) • 29

Processing articles picked by researchers This column highlights articles from non-AOCS journals to complement the AOCS member benefit of access to full journal articles at www.aocs.org/stay-informed/journals.

conditions, AEE is recognized as an ideal green technology for oil extraction. Scope and approach This review discusses the entire process and research progress of AEE in oil extraction, from the oilseed pretreatment to the final crude oil. The two barriers to oil release (cell wall, oil body), the selection basis of enzyme, the influencing factors of AEE, and the combination of demulsification technologies to achieve efficient oil The selection of enzymes depends on the cell wall, oil body composition and structure of the oilseed, and extraction of oil can be achieved through the use of single or mixed enzymes. In combination with ultrasound, microwave and pulsed elec tric field assisted techniques, the extraction efficiency can be improved. To the emulsion formed by the extraction, high oil yield was achieved by analyzing the emulsification composition and corresponding demulsification treatments. Moreover, the quality, micronutrients and oxidative stability of oil extracted by AEE are effectively improved compared with traditional technologies. The immobilization of enzymes increases the possibility of industrialization of AEE. Evaluation of percentage oil yield, energy requirement and mechanical properties of selected bulk oilseeds under compression loading Kabutey, A., et al. , Journal of Food Engineering , 360, 111719, 2024. https://doi.org/10.1016/j.jfoodeng.2023.111719 The present study examined the percentage oil output, energy and mechanical properties of selected bulk oilseeds namely pumpkin, hemp, sesame, milk thistle, cumin and flax by a uniaxial compression process of a maximum load capacity of 500 kN and a preset speed of 5 mm/min. Each sample was measured at 60 mm pressing height with a plunger using the pressing vessel of diam eter 60 mm. The results show that milk thistle seeds required extraction were analyzed. Key finds and conclusions

Bryan Yeh has over 30+ years of senior leader experience in the agribusiness, biofuels, energy, food, management con sulting, renewable chemicals, synthetic biology, and water industries. He is based in Walnut Creek, California.

In the oilseed processing industry, there continues to be emphasis on how best to improve yields. To address this interest area, I have identified two articles. The first article looks at aqueous enzymatic extraction as a novel way of recovering oil from oilseeds. The sec ond article evaluates the effect of compression loading on the oil yield of various oilseeds. The second area of interest is the produc tion of renewable diesel, which is gaining a lot of traction around the world. Of interest in this area is the use of used cooking oil for the production of both renewable diesel and sustainable aviation fuel. The third article reports on the lab production of renewable diesel from waste cooking oil using both batch and continuous reactors. The fourth article reviews the production of renewable diesel by hydro-processing in green solvents. Aqueous enzymatic extraction: A green, environmentally friendly and sustainable oil extraction technology Gao, Y., et al. , Trends in Food Science & Technology , 144, 104315, 2024. https://doi.org/10.1016/j.tifs.2023.104315 Background The adverse environmental impacts of conventional oil process ing technologies have forced the development of new green tech nologies. The aqueous enzymatic extraction (AEE) destroys the oilseed through enzymatic hydrolysis and separates the oil and hydrophilic components with water, to achieve simultaneous separation of oil and protein etc. With no solvent residue, environmental pollution and safety issues, and mild processing