Page 78 - Handbook on Food Fortification in Kenya
P. 78
TROUBLESHOOTING FLOUR FORTIFICATION
Situation Possible causes Possible actions
A single indicator Wrong feed rate, Increase feed rate
nutrient or all of the
nutrients tested are Wrong premix, Change premix,
consistently 80% or
less of the minimum High analytical Check for bias on
standard or greater error test method
than 140% of
minimum. Wrong premix Reformulate
formulation, premix,
One nutrient is
consistently high or High analytical bias Check accuracy of
low but the others
are okay. on the problem method
High variability nutrient.
(CV) of all
nutrients but their This is indicative Check for causes
relationship to of high process of process
each other stays variability rather variability such
relatively constant. than analytical as erratic flour
error. flow rate, high
Low thiamin (Vit. frequency of
B1) but other chokes and
nutrients okay. pneumatic
separation.
Thiaminase enzyme Use different
in maize meal, High source of maize.
pH (>8)
FOOD FORTIFICATION HANDBOOK | 78
