Assertion: l valine | /r/CreatedBy | a method of fermentation
Facets:
value: in the past
type: TEMPORAL
Source sentences:
text: In the past, L-valine has been produced by a method of fermentation primarily using a microorganism belonging to the genus Brevibacterium, Corynebacterium or Serratia or a mutant thereof which produces L-valine or L-leucine (Amino acid fermentation, JAPAN SCIENTIFIC SOCIETY'S PRESS,