Development of sporulation/immobilization method and its application for the continuous production of cyclosporin A by Tolypocladium inflatum

Modification of c and n sources for enhanced production of cyclosporin 'a' by Aspergillus Terreus

Most of the studies regarding cyclosporin ‘A’ production through fungi concentrate around Tolypocladium inflatum. This is mainly due to lower reported production of this drug in other fungi. The present study was therefore conducted to explore indigenous isolates of Aspergillus terreus for synthesis of this drug and defining a production medium for obtaining high yield of cyclosporin ‘A’. For this purpose carbon and nitrogen sources were optimized for the selected best strain of A. terreus. Overall results depicted that the best cyclosporin ‘A’ yield from selected Aspergillus terreus (FCBP58) could be obtained by using production medium containing glucose 10% as carbon source and peptone 0.5% as nitrogen source. This modification in production medium enhanced drug synthesis by selected fungi significantly. The production capabilities when compared with biomass of fungi there was found no relationship between the two confirming that the medium modification increased overall drug synthesis powers of the fungi.

Batch decolorization of molasses by suspended and immobilized fungus of Geotrichum candidum Dec 1

Geotrichum candidum Dec 1, which exhibits a broad dye-decolorizing spectrum, was used to decolorize molasses during semi-batch cultivation. An eighty % decolorization of molasses and a stable peroxidase activity were maintained for approximately four weeks, after which, both activities deteriorated significantly. Subsequently, repeated batch cultivation of fungal cells immobilized on polyurethane foam was employed to solve the aforementioned problems and stable decolorization of molasses as well as stable peroxidase activity was realized for more than eight weeks.