Thinking out loud - if C albicans (and other C's/yeasts/fungi) are ammonia generating organisms, would it not stand to reason that this by-product would hence produce an alkaline environment? And if so, is it not probable that this might be an inherent mechanism designed to achieve growth/reproduction, mycelial morphing, survival, etc. of the organism?
Candida ferments sugars. Fermentation of sugars leads to the formation of acids, lactic acid in this case.