Using date by-products as a feedstock should considerably
reduce the cost of production. Dates are rich in sugar ranging
from 73% to 83% on dry weight basis and consisted mostly of
the two inverted form, glucose and fructose [20e23]. Fresh
varieties have a higher content of inverted sugars, the semi
dried varieties contain equal amount of inverted sugars and
sucrose, while dried varieties contain more sucrose [11].