Iowa state bystander. [volume] (Des Moines, Iowa) 1894-1916, 1915-01-29
copyright. 1914. by A. S. Grayl
MANUFACTURES OF MALT.

| II We could only Know all the FACTOR
which are concerned in producing an
single organism, however simple
might be, in all its relations and PIT
portions, We could explain the un
verse from top to bottom and eyolv
an infallihle rer,ea. for all OUR Ill:
Consequently the study OF the begir
ming of life in any organism is in
mensaiy interesting and illuminatin
to such of US as are not egotists and d
not insist on learning in the most e1
pensive of all schools-that OF pei
/! sonal experience Hence, : the opel
! minded the study OF the manufacture
OF malt should be most suggestive ant
! instructive
Any live seed or grain can be malt
ed; and barley. oats, rice. wheat, ~
/ and maize are used, but because Of il:
favor and other important qualities
/ barley is the prime f2Toci-s :or thl:
+ purpose The acreage tine -seEi-eE
to malt harles Is - days Tie o1s-
; alton is started by Sleeping u soak
ing the barley coFEs :. tanks q ~aEsz
for about farsy-sish1 . ssy-ey hcszrs
/ Sleeping ths grain does -oe cc71sIs'
merely II the taxing Z O i cs-cZiz
4 amour, ot EE1E, N. = EsssSlrT u
order 70 bring about s5----a-l11- and
10 do this ths EE-- -Zs- -v-al with
il the cccrs IN cE-2l gscE-h OF
b tine 7 Is quit -F-ssS1.s 80 farce the
nscss- ElE--- q Es-s- into, the
E-En II Eass tn tn -Es EcrtTeight
u ss-@-y HIS GIVE Il .1e sleeping
1z-Et-ssss tx IL Ul IS not steep
--G TIL esr-t- changes Initiated
IT IL ES-5r AEs -EsE place. and it
-s-t-reS Z SaEc1-s AMOUNT OF tine to
1r-E --s=s charges TO COM pIetion.
Alan 1s-Es22--!EeT The corus contain
E.-s--- sf--E Per cent water: at the
a-s t-zs sbeRt Is per cent of mat
1sr .sas been removed from the grain
II -.a water drawn of. and the total
TEsI1ls OF the seeds has been in
creased about twenty per cent as the
result OF the water absorbed.
After the barley is removed from the
sleeping tanks it is made up into rec.
tangular heaps sixteen to twenty
inches deep known as position No. l.,
OF the couch" the object of this be.
ing to enable it to gather heat and
start active terminating. 1t usually
remains in couch twelve to twenty
four hours, or until the interior of the
heap registers temperature of 60
degrees Fahrenheit. At this point the
barley is moved to position No. 2, or
young floor" and there thinly and
evenly spread in order that 1t may be
controlled. When termination begins
engines are secreted and these act on
the reserve material, starch and pro-
teins of the endosperm, converting
them into simpler compounds. capable
of diffusing to various parts OF the
growing germ
But the limited termination which
constitutes the mating Dgocsss re,
tafns all the soluble es-r<ssa5s sn ths
finished mat Starch aud TIE psoteins
are reformed, tEss so-ae- befng de-
posted in tie tEsssea % tae gsr.a and
the cells 81 The seetssfgn witch preri-
ousfT vsss s1@acet free from starch:
tas SsaseSs g2stser 6sDos3ted la the
Es&ter l5ssDDsass ~ a considerable
ezssrzt aao tas protopisssnic content
Of the cells constituting the root
which pscarndes from the base of the
grain
After the first rootlst mas broken
through the EMS Of the sheath ii is
followed by others until there are per.
haps fire Or more. The cotyledonary
sheath, Or seed leaf, begins TO elongate
On the third Or fourth day OF germina.
ton and ruptures the true covering
Of the grain: 1t then grows upward
between this and the husk and forms
the acrospire or. "spire" OF the malt.
ster. The temperature during six or
seven days is kept down to about fifty.
fise degrees by turning or blowing the
grain about every six hours. +
About the eighth day the grain is
moved to position No. 3. known as
"old floor" where. it is spread thinly
and slowly allowed to dry for the pur.
pose Of whitening its roots. At this
stage the acrospire should be about
three.fourths the distance up the
corn. The treatment now REQUIRES
thickening the piece up to. about ten
inches. The rootlets now having with.
cred and died of, the temperature in.
crease resulting from thickening the
grain pile Is accompanied by little II
any increase in the growth of the
acrospire, the action being confined
chiefly to the, ,mellowing Of the grain
BY the engines. Under normal con.
ditions the temperature in ".old piece
IS allowed to rise as high as about
seventy degrees during the SIX hours
previous to loading It into the kiln,
At this stage the moisture content Il
about forty per cent and It is easily
possible to break down the corn be.
tween the thumb and finger; tia
grain Is soft; mealy and soluble; Il
y mostly digested. The next stage
consists In loading the malt into the
kiln and there thoroughly drying II
to- stop all further digestion, then
roasting II Tor the desired favor.
Just why water produces these pro.
I found AZ A metaboiic changes lii IA " grain,
Ireleasllsg the energy stored therei-, 81
ytheI u y md csusing II ID follow Ia 81.
sRsriy inner step by step the many
III XII necess4f 10 repeat i th S esyol N,
lfao !al = 4 y 4 d. otlser plaut ne,