.2.3 Fungal Cultivation and Extraction of Metabolites
Potato dextrose broth was used for fermentation of
fungal endophytes. A fungal strain that covered the
surface of the inoculated Petri dish was cut into small
pieces of 1.5 cm × 1.5 cm and transferred with a sterile
loop into 500 mL Erlenmeyer flask containing either
200 mL PDB. The flasks were incubated at room
temperature for 3 weeks with static condition. After the
incubation period, the cultures were taken out and
filtered to remove the mycelia. The fungal metabolites
were extracted in methanol (1:1 v/v) and macerated for
24 hour. Furthermore, they were evaporated in vacuum
evaporator to yield the crude extracts. The crude
extracts were then dissolved in Dimethyl sulphoxide
(DMSO) for antimicrobial bioassay.