Soybean processing evolves: Industry expert outlines basics and innovations

The intricacies of soybean processing took center stage at the GEAPS Exchange 2025, where industry expert Scott Korte, Director of Engineering at N.Hunt Moore and Associates, Inc., delivered a comprehensive overview of current practices and future directions in the field.

Korte's talk, "Soybean Processing – Basics and Beyond," guided attendees through the whole soybean crushing process, from initial cleaning and preparation to oil extraction and meal production.

"To grasp the basics of soybean processing is key to boost plant productivity and product quality," Korte stressed. He broke down the main steps in the process, including cleaning, cracking, dehulling, and flaking of soybeans before extraction.

The talk showcased how proper flaking plays a vital part in the extraction process. Korte pointed out that the best soybean flake measures about 300 cells in diameter and around 18 cells thick, which enables the most effective oil extraction.

Hexane solvent extraction is the go-to method for big operations in the industry. Korte explained the process pointing out that it brings down the oil in the flakes from 18-20% to 0.5-1%.

Safety was a big deal in the talk, given how easy hexane catches fire. Korte hammered home the need for solid safety rules, including wearing special clothes and using specific gear in areas where they work with solvents.

The talk also covered other ways to extract oil, like squeezing it out . While not as common in big U.S. operations, these methods are catching on in smaller markets for organic and non-GMO stuff.

The talk ended with a look at meal quality rules. Korte pointed out that normal soybean meal tries to have 47-47.5% protein, 12.5% moisture, and under 3.5% fiber.