666 
Non-Alcoholic  Pure  Flavors. 
Am.  Jour.  Pharm, 
Sept.,  1918. 
or  any  emulsified  product,  which  incorporates  air  and  hastens  the 
oxidation  of  the  terpenes.  I  have  prepared  emulsions  of  diluted 
Nulomoline  and  5  per  cent,  whole  lemon  oil,  with  and  without  the 
aid  of  small  proportions  of  gums  but  I  cannot  advise  the  use  of. 
whole  lemon  or  orange  oil  in  any  emulsified  product.  Most  of  my 
experiments  have  been  made  with  the  true  terpeneless  lemon  and 
orange  oils,  approximately  15  times  stronger  than  ordinary  lemon 
or  orange  oil. 
These  require  the  use  of  less  than  one  half  of  one  per  cent,  by 
weight,  i.  e.,  one  third  of  a  pound  of  oil  to  100  pounds  of  diluted 
Nulomoline  containing  preferably  a  small  proportion  of  gum  arabic 
or  gum  tragacanth,  although  perhaps  eggalbumin  would  do  just  as 
well  if  not  better.  In  adding  the  small  per  cent,  of  powdered  gum  it 
is  advisable  to  dissolve  it  in  a  fairly  large  volume  of  the  water  used 
for  diluting  the  Nulomoline,  said  water  having  been  brought  to  a 
boil  and  the  gas  turned  of!  and  the  powdered  gum  dusted  in  while 
stirring-. 
There  are  various  emulsifying  machines  on  the  market,  but  none 
of  them,  I  am  fairly  certain,  can  surpass  the  wonderfully  efficient 
machine  made  by  the  well-known  De  Laval  Separator  Co.  and 
known  as  the  "  Emulsor."  They  also  make  a  very  efficient  clarify- 
ing and  filtering  machine  now  used  by  many  up-to-date  flavoring 
extract  makers.  I  owe  my  thanks  to  that  company,  who  allowed 
me  the  use  of  their  demonstrating  laboratory,  and  to  Dr.  Alexander, 
their  expert  investigator  and  demonstrator.  A  speed  of  10,000 
revolutions  per  minute  is  obtained  by  the  "  Emulsor,"  with  a  capacity 
(in  the  2  hp.  belt-driven  factory  model)  approaching  100  gallons 
per  hour. 
As  said  above,  I  have  made  these  flavors  without  any  gum  to  aid 
emulsification  and  show  you  a  sample  which  if  it  shows  no  sepa- 
ration on  long  standing,  is  all  that  can  be  desired.  It  was  simply 
run  through  the  machine  twice  (which  operation  requires  no  watch- 
ing, by  the  way)  and  is  really  only  translucent,  not  milky.  Of 
course,  these  citrus  oil  flavors  contain  no  alcohol  at  all  and  we  thus 
get  the  true  flavor,  without  the  interfering  effects  of  strong  alcohol. 
In  the  thick  "  tube  flavors,"  Nulomoline  could  of  course  take  the 
place  of  glycerin,  with  less  tendency  to  separate,  which  is  one  of 
the  weak  points  in  the  citrus  oil  tube  flavors  as  now  made. 
In  closing  I  would  add  that  I  have  heard  of  attempts  to  emulsify 
