As a result, many shea producers are adopting more mechanized solutions to improve quality and yield. Larger processors use mechanical extraction equipment to recover more oil efficiently. Screw press expellers physically crush the shea kernels to squeeze out shea oil from the solid meal, which exits the expeller as a cake.
How many raw shea nuts are produced in Africa?
Africa produces approximately 1,760,000 metric tons (MT) of raw shea nuts a year, and historically, most of this stayed within the African continent to supply domestic demand. The shea export market traditionally traded raw shea kernels rather than shea butter or other finished products.
Does shea butter need solvent extraction?
For these reasons, solvent extraction is generally not preferred for shea butter extraction—especially in food and cosmetic markets where consumers seek natural, organic ingredients. What is shea oil? Traditional water extraction, mechanical expeller pressing, and solvent extraction yield shea butter.
How is shea butter fractionated?
Once refined, shea butter can be fractionated into two parts: a creamy fat known as shea stearin and a liquid oil called shea olein—otherwise known as shea oil. Fractionation separates these two unique components using either a chemical reagent or physical methods like centrifugation.
How do you store dried shea nut kernels?
Drying in the sun or in an oven for several days to reduce the moisture content and prevent mold during storage. De-husking to remove the shell by cracking the kernel then blowing the shells off with a fan or winnowing machine. Dried, shelled shea nut kernels can be stored or sold at this point in the process.