Fig. 3.

Bacterial diversity profiles of colonic fermentation samples.

(a) α- diversity analysis of batch fermentation samples with (BPDS) and without iron chelator (No BPDS) using the Shannon index and (b) β- diversity analysis of batch fermentation samples portraying weighted analysis of samples with (BPDS) and without (control) iron chelator using the UniFrac metric and presented as a PCoA plot. Data shown is the average Eigenvalues from the 3 individual experiments from 3 different donors. Each colour represents a different donor. Analysis was performed using QIIME (V1.9) and visualised using the XLSTAT add-on package in Microsoft Excel.