Advances in Contaminant Removal from Edible Oils Using the Unique Separation Technology

Recent advancements in edible oil purification technologies address critical challenges in removing harmful contaminants while maintaining product quality. This paper explores the use of a multi-stage short-path stripping system designed for efficient removal of contaminants such as mineral oil hydrocarbons (MOSH and MOAH), polychlorinated biphenyls (PCBs), glycidyl esters (GEs), and 3-monochloropropane-1,2-diol (3-MCPDs).

Operating under low-pressure conditions, the system employs a multi-stage, falling-film design with an integrated internal condenser, enabling precise separation while preserving heat-sensitive oils. The technology's efficacy is demonstrated through case studies that showcase significant reductions in contaminant levels across various edible oils, including palm, soybean, and coconut oils. For instance, MOSH levels in were reduced from 187 ppm to 7.5 ppm, and MOAH levels were lowered from 20 ppm to 2.3 ppm, without compromising product quality or yield.

The paper also highlights the adaptability of this purification method in broader applications, including nutraceuticals, biofuels, and specialty chemicals. Results indicate that the technology effectively eliminates toxic compounds from other oils and concentrates omega-3 fatty acids while reducing energy consumption and minimizing product degradation.

The findings emphasize the importance of scalable, energy-efficient technologies for industries facing stringent quality and safety standards. This study provides valuable insights into advanced contaminant removal processes and their role in enhancing both product integrity and environmental sustainability across multiple sectors.