The cell suspension
was serially diluted and plated on MRS agar plate.The
plates were then incubated under anaerobic condition (Oxoid™
Anaerojar™, Thermoscientific, Melbourne, Australia) at 37 °C
for 48 h. The plating was performed in triplicate. Results are
expressed as log colony forming units per gram of the powder
used (log cfu/g powder)