Page 8 - Co Products Brochure

THE MAIZE WET MILLING PROCESS
CO-PRODUCTS GENERATION AND APPLICATION
MAIZE DELIVERED
Maize offloading
MAIZE CLEANED
STEEPING TANKS
MAIZE KERNEL CRACKED
(
COARSE MILL)
GERM SEPARATION
MILLING PROCESS
(
FINE MILL)
FIBRE SEPARATION
GLUTEN/STARCH SEPARATION
STARCH WASHED
STARCH
DRIED
ENZYME/ACID CONVERSION
GLUCOSE
POWDER
GLUCOSE
SYRUP
A medium protein (20%), medium
energy (75% TDN) product is wide-
ly used in ruminant, poultry and pig
rations. In ruminant rations it par-
tially replaces more expensive pro-
teins while at the same time reduc-
ing starch levels thereby limiting aci-
dosis. It
may be included at levels
of 15 to 20% of the diet. In poultry
and pig rations gluten-20 can be
included at levels of 10 to 15% with-
out reducing feed efficiency or egg or
meat production
This protein and energy rich raw
material (61% crude protein) with a
high bypass value contains an
abundance of sulphur - amino acids
which are invaluable for wool and
milk production. High levels (8 to
15%)
of Gluten-60 may be fed in
poultry and pig diets, providing the
amino acids are balanced correctly.
The dark yellow colour contributes
to yolk and skin colour in poultry
DRYER
DRYER
FIBRE
+ CORN STEEP
LIQUOR
MAIZE FIBRE
GERM EXPELLED
MAIZE OIL
MAIZE
GERM MEAL
Fibre Separation
The steeping process gives rise to
steepwater which is concentrated
to give corn steep liquor (CSL)
which is added back to the maize
fibre to give gluten-20. CSL has
50%
crude protein on a dry matter
basis and is rich in energy and min-
erals
HEAVY STEEPWATER
Maize is steeped in water plus
sulphur dioxide at 50
o
C for 36
hours.
Lactobacillus
bacteria
thrive producing lactic acid.
Soluble nutrients leach out. The
softened kernels are subsequently
cracked and milled
Steeping Tanks
Germ 6.5%
Gluten-60 4.5%
Gluten-20 17.5%
Starch 70%
The soluble portions of
the kernel are used for
food and feed materials
Gluten-60
GLUTEN-60
GLUTEN-20