PROCESS FOR THE PREPARATION OF INDOLE ON THE BASIS OF A TRYPTOPHAN CONTAINING STARTING MEDIUM, THE PREPARED INDOLE PERFUME COMPOSITIONS AND FLAVOURINGS RESPECTIVELY CONTAINING THEINDOLE IN QUESTION AS WELL AS PRODUCTS FLAVOURED OR PERFUMED HE EWITH

摘要

The invention relates to a process for the preparation of indole applicable in flavourings and perfume compositions wherein a microorganism which does not or hardly metabolize indole is cultured aerobically or anaerobically in a culture medium containing as the substrate tryptophan of natural origin. The produced indole in the fermentation broth may be isolated therefrom with a food grade extraction agent.