Cassava roots ( ) were
purchased from Doma market while soybean seeds (
), wheat flour (Golden penny brand), and sucrose.
Hydrogenated fat, eggs, vanilla and salt were purchased
from Lafia main market, all in Nasarawa state, Nigeria. All
laboratory reagents used were of analytical quality.
Cassava tubers were peeled, washed, with clean
water, and diced into cubes which were sulphited for 2
minutes in 1% sodium metabisulphite solution, according to
the method of Kordyles(1990). Cubes were rinsed out and soaked in excess volume of clean water at room temperature
(27±2 C) for 24h with 8 hourly changing of water. Cubes
were washed severally with clean water, sun-dried for 6
days and then oven-dried at 50 C for 16h. The sample was
milled in a hammer mill (Retch 5657, GMbH, Germany)
into fine flour, and sieved through
pore size. Flours were wrapped in polyethylene bags and
stored in airtight containers until used.