Investigations of amino acid requirements of fungal mutants and of assimilation of 14C-
labelled substrates by fungi have yielded extensive informa-tion about biosynthetic …

The production of nitrogen compounds in the culture medium by Scopulariopsis brevicaulis
and other fungi has been studied. The formation of extracellular nitrogen compounds …

A complete quantitative amino acid analysis of the free amino acid fraction and the mycelial
residue fraction of the mould Aspergillus flavus during different stages of growth has been …

When Alexander Fleming (1929) noted that a mold contami-nant could lyze colonies of
staphylococci and that the active fac-tor could be found in the filtrate» of the mold culture, no …

Studies on the utilization of fifteen amino acids from a casein hydrolyzate-beef extract-
dextrose medium indicate that all these amino acids, which disappear either partially or …

In the previous review of this series (14A) a section was de-voted to the economics of the
fermentation industries. This policy has been continued this year as it reflects trends in indus …

Paper chromatographic methods were used to determine the amino acids in unhydrolysed
corn steep liquor and to study the uptake and synthesis of amino acids by Penicillium …

Auf der Grundlage einschlägiger Veröffentlichungen wird ein Mechanismus für die
Biosynthese des Benzylpenicillins angegeben, welcher dessen unmittelbare Vorstufen und …

Many different substances are known to affect the yields of penicillin from growing cultures of
Penicillium chrysogenum. Under the usual con-ditions, it is difficult to distinguish between …

Bei einem in synthetischer Nährlösung mit Glycerin und Nitrat in Schüttelkultur wachsenden
Streptomyces-Stamm wurden nach 2 bis zu 15 Tagen Kulturdauer fortlaufende qualitative …