Researchers isolated and purified phenolic compounds from California olive pomace using pilot-scale C18 gel chromatography. They extracted compounds from the pomace waste and separated them into different fractions using a special column. The fractions were then analyzed for their phenol content. Results showed that different fractions contained varying amounts of phenolic compounds, with some fractions having similar profiles while others contained unique compounds. The study revealed new information about the chemical composition of olive pomace fractions, which could be useful for finding practical applications for these waste products in the food industry.