The present invention disclosed herein describes (i) the growth promotional activity of natural plant based fibres on Bacillus coagulans MTCC 5856; (ii) the combination of natural plant based fibres and Bacillus coagulans MTCC 5856 to inhibit Gram Negative pathogenic bacteria and (iii) the production of short chain fatty acids (SCFA) by Bacillus coagulans MTCC 5856 using plant based natural fibres.