RT Journal Article SR Electronic(1) A1 Mill, P. J.YR 1964 T1 The Effect of Nitrogenous Substances on the Time of Flocculation of Saccharomyces cerevisiae JF Microbiology, VO 35 IS 1 SP 53 OP 60 DO https://doi.org/10.1099/00221287-35-1-53 PB Microbiology Society, SN 1465-2080, AB The point in the growth cycle at which a strain of brewer’s yeast became potentially flocculent could be delayed by supplementing the medium with ammonia, basic amino acids, glutamine, asparagine, γ-aminobutyric acid or urea. Other amino acids were ineffective. β-Alanine and 2-chloro-4-aminobenzoic acid led to an abnormally early appearance of potential flocculence. No development of flocculence occurred in the absence of glucose. It is suggested that the maintenance of non-flocculence is dependent upon the presence in the cell wall of a nitrogenous compound; potential flocculence will develop when this compound is not synthesized at a rate sufficient to maintain its concentration in the wall. The nitrogenous nutrients which delay flocculation would then act by enhancing this rate of synthesis., UL https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-35-1-53