摘要:
The invention concerns a process for preparing tetraacetylphytospingosine (TAPS) using F-60-10 mating type strain of Pichia ciferrii. Such strain is subjected to mutagenesis and the high TAPS producing strains are selected by a special procedure. These strains are grown in a fed batch mode on a non-fermentative carbon source at a temperature above 26.degree. C and the TAPS collected from the fermentation medium. Glycerol is a preferred carbon source and preferably L-serine is added to the culture medium.
摘要:
Gamma-decalactone is obtained from a source of ricinoleic acid, for example castor oil, by incubation with Sp. odorus or Rh. glutinis. The product lactone is obtained by lactonising the product hydroxydecanoic acid. The lactone is of value in perfumery and flavors.