Production of biocapsules was carried out according to García-
Martínez et al. (2011), 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.