Production of biocapsules was carried out according to under special conditions in a formation medium consisting of yeast nitrogen base without amino acids
(YNB, Difco, Becton Dickinson and Company, Sparks, MD) containing
a 5 g/L concentration of gluconic acid (SigmaeAldrich, St.
Louis, MO) as carbon source. The medium was buffered at pH 7 with
sodium and potassium phosphate. The free cells used in the
fermentation experiments were processed identically but in the
absence of the filamentous fungus.