ABSTRACT
Solid-liquid extraction or leaching is a separation process affected by a fluid involving the transfer of solutes from a solid matrix to a solvent. It is an extensively used unit operation to recover many important food components: sucrose in cane or beets, lipids from oilseeds, proteins in oilseed meals, phytochemicals from plants, and functional hydrocolloids from algae, among others. Solid-liquid extraction (or simply extraction) may also be used to remove undesirable contaminants and toxins present in foods and feeds.
