Microemulsion-based oil extraction from canola press cake: Applicability of lecithin, Tween 80, and Span 80

The present study aimed to explore the potential of bio-surfactant-based microemulsions (MEs) for extracting canola oil from canola press cake (CPC), a by-product of the oil industry. Lecithin, Tween 20, Tween 80, and Span 80, both with and without co-surfactants, were utilized to formulate ME premixes. The premixes were then combined with CPC at different ratios and subjected to centrifugation. For the Tween formulations, the effects of natural (pH 6.1) and alkaline (pH 10.0) conditions were also examined. Pure lecithin did not extract any oil, but when combined with CPC at a 1:3 ratio (CPC: premix [water:1-propanol: lecithin = 75:20:5 wt%]), approximately 50% of the oil was extracted, mostly in emulsified form. In contrast, using Tween 80 (at 70°C, with a CPC: premix ratio of 1:8 and natural pH), about 27% of residual oil from the CPC was extracted as free oil. Interestingly, under alkaline pH (10.0), Tween: water premix (0.15:99.85 wt%) at a 1:4 premix: CPC ratio resulted in the recovery of 40 – 50% of the oil from the CPC in emulsified form. These findings revealed the potential of the tested surfactants for partial oil extraction from CPC. The effectiveness of very low concentrations of Tweens under alkaline pH requires further investigations.
- Tzen JTC, Huang AHC. Surface-structure and properties of plant seed oil bodies. J Cell Biol. 1992;117:327-335. doi: 10.1083/jcb.117.2.327
- Nikiforidis CV. Structure and functions of oleosomes (oil bodies). Adv Colloid Interface Sci. 2019;274:e102039. doi: 10.1016/j.cis.2019.102039
- Gadhave AD, Waghmare JT. A short review on microemulsion and its application in extraction of vegetable oil. Intl J Res Eng Technol. 2014;l03:147-158. doi: 10.15623/ijret.2014.0309022
- Fetzer A, Müller K, Schmid M, Eisner P. Rapeseed proteins for technical applications: Processing, isolation, modification and functional properties - a review. Ind Crops Prod. 2020;158:112986. doi: 10.1016/j.indcrop.2020.112986
- Gagnon Y, Mhemdi H, Delbecq F, Van Hecke E. Extended surfactants and their tailored applications for vegetable oils extraction: An overview. OCL. 2021;28:7. doi: 10.1051/ocl/2020062
- Miles DR. Recovery of oils and fats from oilseeds and fatty materials. In: Shahidi F, editor. Bailey’s Industrial Oil and Fat Products. Vol. 5. United States: John Wiley & Sons; 2020. p. 87-138.
- Abbasi S, Scanlon MG. Microemulsion: A novel alternative technique for edible oil extraction_a mechanistic viewpoint. Crit Rev Food Sci Nutr. 2023;63(30):10461-10482. doi: 10.1080/10408398.2022.2078786
- Bera A, Kumar T, Ojha K Mandal A. Screening of microemulsion properties for application in enhanced oil recovery. Fuel. 2014;121:198-207. doi: 10.1016/j.fuel.2013.12.051
- Arpornpong N, Charoensaeng A, Khaodhiar S Sabatini DA. Formulation of microemulsion-based washing agent for oil recovery from spent bleaching earth-hydrophilic lipophilic deviation concept. Colloids Surf A Physicochem Eng Asp. 2018;541:87-96. doi: 10.1016/j.colsurfa.2018.01.026
- Hernandez HW, Ehlert W, Trabelsi S. Removal of crude oil residue from solid surfaces using microemulsions. Fuel. 2019;297:398-404. doi: 10.1016/j.fuel.2018.10.035
- Amiri-Rigi A, Abbasi S, Emmambux MN. Background, limitations, and future perspectives in food grade microemulsions and nanoemulsions. Food Rev Int. 2023;39(8):5048-5086. doi: 10.1080/87559129.2022.2059808
- Do L, Sabatini DA. Aqueous extended-surfactant based method for vegetable oil extraction: Proof of concept. J Am Oil Chem Soc. 2010;87:1211-1220. doi: 10.1007/s11746-010-1603-0
- Abbasi S, Radi M. Food grade microemulsion systems: Canola oil/lecithin: n propanol/water. Food Chem. 2016;194:972-979. doi: 10.1016/j.foodchem.2015.08.078
- Radi M, Abbasi S. Optimization of novel oil extraction technique from canola seeds: Lecithin-based microemulsion. Eur J Lipid Sci Technol. 2018;120:1700267. doi: 10.1002/ejlt.201700267
- Mukherjee P, Sahu S, Padhan, S, et al. Temperature induced emulsification and demulsification of pseudoternary mixtures of Tween80, butanol, kerosene, water system. Ind Eng Chem Res. 2011a;50:11889-11896. doi: 10.1021/ie102480d
- Mukherjee P, Sahu S, Padhan, S, Patel S, Mohapatra PK, Mishra BK. Effect of temperature on pseudoternary system Tween-80-butanol-hexane-water. J Colloid Interface Sci. 2011b;355:157-163. doi: 10.1016/j.jcis.2010.12.021
- Prigat Y, Fattori A, Shames AI, Ottaviani MF, Garti N. Micro-characterization of modified microemulsions loaded with gossypol, pure and extracted from cottonseed. Colloids Surf B Biointerfaces. 2019;180:487-494. doi: 10.1016/j.colsurfb.2019.05.004
- Ramly N, Zakaria R, Naim MN. Surfactant-assisted aqueous extraction of palm-pressed mesocarp fiber residual oil with Tween 80 solution. Sep Sci Technol. 2017;l52:1796-1805. doi: 10.1080/01496395.2017.1303507
- Fang L, Wang T, Lamsal B. Synergistic effect of surfactants and silica nanoparticles on oil recovery from condensed corn distillers solubles (CCDS). Ind Crops Prod. 2015;77:553-559. doi: 10.1016/j.indcrop.2015.09.031
- Zhao J, Jiang K, Chen Y, et al. Preparation and characterization of microemulsions based on antarctic krill oil. Mar Drugs. 2020;18:492. doi: 10.3390/md18100492
- Chen J, Yu X, Geng Q, Li M. Combination of Span 20 and pH-assisted walnut oil extraction during aqueous extraction process. LWT Food Sci Technol. 2018;91:477-483. doi: 10.1016/j.lwt.2018.01.091
- Geng Q, Chena J, Guob R, Zhang Y, Li Q, Yu X. Salt-assisted aqueous extraction combined with Span 20 allow the obtaining of a high-quality and yield walnut oil. LWT Food Sci Technol. 2020;121:108956. doi: 10.1016/j.lwt.2019.108956
- Zhang SB, Wang T. Destabilization of emulsion formed during aqueous extraction of peanut oil: Synergistic effect of Tween 20 and pH. J Am Chem Soc. 2016;93(11):1551-1561. doi: 10.1007/s11746-016-2899-1
- Alimari I, Abbasi S. Freeze assisted-aqueous extraction of rapeseed oil using Tween 20. Asian J Agric Food Sci. 2025;12(1):31-41.
- American Oil Chemists’ Society. Official Methods and Recommended Practices of the American Oil Chemists’ Society. 6th ed. Champaign: AOCS Press; 2009.
- Do LD, Stevens TL, Kibbey TCG, Sabatini DA. Preliminary formulation development for aqueous surfactant-based soybean oil extraction. Ind Crops Prod. 2014;62:140-146. doi: 10.1016/j.indcrop.2014.08.026
- Baltatu C, Mateescu M, Anghelache M, Tabarasu AM. The importance of moisture in extracting oils from oilseeds-a review. Ann Fac Eng Hunedoara Int J Eng. 2022;2:167-170.
- Yadavalli G, Lei H, Yang Z, Villota E, Qian M. Alkaline separation of protein from canola meal and its kinetic study. SF J Mater Chem Eng. 2019;2:1011.
- Walstra P. Physical Chemistry of Foods. 1st ed. United States: CRC Press; 2002. doi: 10.1201/9780203910436