The kernel is the oil-bearing material that can be obtained by processing the shea nut fruit. The fruit primarily undergoes several processes – de-pulping, boiling, drying, deshelling, winnowing and sorting – to obtain the kernel from which the shea butter is extracted. Mechanical processing technology
How are shea nuts processed?
Subsequently, the nuts are processed by boiling, roasting, or sun-drying. Boiling in water prevents the shea seeds from germinating and prevents hydrolytic degradation of the extracted shea butter. The boiled shea nuts are sun-dried, and then the dried shea nuts are cracked to obtain the kernels.
How is shea butter processed?
Shea butter processing is a seasonal affair. Fruiting and gathering of shea nuts occur between May and August each year. In this stage, shea nuts are processed into kernel form. Both raw and ripe fruits are green but ripe fruit is occasionally yellowish and soft when felt.
Why do Shea nuts need to be boiled?
Boiling in water prevents the shea seeds from germinating and prevents hydrolytic degradation of the extracted shea butter. The boiled shea nuts are sun-dried, and then the dried shea nuts are cracked to obtain the kernels. The kernels, too, are either sun-dried or roasted to eliminate any residual moisture.
Where are shea nuts produced in Burkina Faso?
The Sissili and Ziro provinces are the most important production centres. Further, shea nuts are the country’s third most important export after cotton and livestock. Since both shea nuts and shea butter are exported in huge quantities from Burkina Faso, their quality is extremely important.
What are the 4 layers of a shea nut?
The fruit is composed of four layers – the epicarp, mesocarp, shell and the kernel. The epicarp together with the mesocarp is called the pulp; the shell and the kernel compose the nut. The kernel is the oil-bearing material that can be obtained by processing the shea nut fruit.