Abstract
The utilization of sucrose, maltose, lactose, and raffinose byAspergillus ustus (Bainier) Thom and Church,A. flavipes (Bainier and Sartory) Thom and Church,A. carneus (van Teigh) Bloch., andA. amestelodami (Mangin) Thom and Church was studied. The culture solutions were analysed by circular paper partition chromatography to detect the presence of various sugars formed in the medium during the period of incubation. Except for lactose, all the oligosaccharides were utilized through an indirect pathway and almost all proved to be good sources of carbon for the fungi tested. Most of the species converted maltose by transglycosidation into two new oligosaccharides,viz., maltotriose and maltotetraose with simultaneous liberation of glucose. During the utilization of raffinose, melibiose and fructose were detected in the culture media of all the Aspergilli. Melibiose was further broken down to glucose and galactose byA. carneus andA. amestelodami.
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