Am.  Jour.  Pharm.l 
Sept.,  1884.  J 
Analysis  of  Matt. 
465 
ANALYSIS  OF  MALT. 
By  Frank  X.  Moerk,  Ph.G. 
From  an  Inaugural  Essay.1 
The  malt  used  in  this  analysis  was  prepared  from  the  barley  of  the 
previous  analysis,  and  was  eight  clays  on  the  floor.  It  was  reduced  to 
a  fine  powder  by  grinding  and  using  a  mortar  and  pestle.  The  analy- 
sis, with  the  exception  of  the  alcohol  extract,  was  a  repetition  of  the 
same  operations  described  for  barley  (see  "Amer0  Jour.  Phar.,"  1884, 
p.  366). 
Moisture. — Loss  in  drying  5  Gm.,  0*528  Gm.,  or  10*56  per  cent. 
Ash. — Amount  of  ash  in  5  Gm.,  0*119  Gm.,  or  2*38  per  cent.  Of 
the  0*119  Gm.,  0*046  Gm.  was  soluble  in  water,  0*045  Gm.  in  hydro- 
chloric acid,  0*015  Gm.  in  solution  of  soda,  and  0*013  Gm.  was 
insoluble. 
Nitrogen  Estimation. — 2  Gm.  of  malt  evolved  sufficient  ammonia 
to  replace  135*1  Cc.  of  the  alkaline  solution,  or  to  neutralize  2*702  Cc. 
of  the  acid  solution.  By  multiplying  2*702  by  0*014  Gm.,  for  reasons 
already  given,  there  is  obtained  0*037828  Gm.  nitrogen,  and  this  pro- 
duct multiplied  by  6*25  gixes  0*23645  Gm.,  the  amount  of  proteids  in 
2  Gm.  malt,  or  11*82  per  cent. 
Benzin  Extract. — 10  Gm.  of  powdered  malt  were  treated  with  ben- 
zin  until  exhausted.  The  total  extract  amounted  to  0*34  Gm.  Of 
this,  0*026  Gm.  was  soluble  in  water  (fatty  and  acid);  0*17  Gm.  was 
soluble  in  alcohol  (fatty  and  resinous) ;  and  0*144  Gm.  was  insoluble 
in  water  or  alcohol. 
Alcohol  Extract,  No.  I. — After  drying  the  portion  insoluble  in  ben- 
zin it  was  exhausted  with  80  per  cent,  alcohol.  The  total  extract  was 
1*533  Gm.,  of  which  about  0*22  Gm.  consisted  of  a  light  brownish 
mass,  soluble  in  water  and  alkalies;  the  solution  of  the  substance  in 
the  latter  was  considerably  darker  in  color.  This  darkening  is  also 
produced  by  long  heating  of  the  aqueous  solution.  The  extract  was 
carefully  neutralized  with  an  alcoholic  solution  of  sodium  hydrate,  and 
evaporated  to  dryness  on  a  water-bath.  It  was  then  extracted  with 
boiling  water,  and  diluted  to  75  Cc.    This  solution  reduced  Fehling's 
1  The  essay  was  accompanied  by  a  number  of  samples  of  the  different 
products  obtained  in  the  course  of  investigation. 
30 
