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. 2021 Mar 2;11(3):152. doi: 10.1007/s13205-021-02693-z

Table 2.

TLC-bioautography assay against Pseudomonas aeruginosa ATCC 27853

Spot number Rf value ZOI
1 0.25
2 0.34
3 0.4
4 0.45
5 0.51
6 0.55
7 0.6
8 0.82a Positive
9 0.98

a Inhibitory activity, after TLC separation of the ethyl acetate (EA) fraction from isolate MUS1, was attributed to one major constituent, spot 8 (Rf = 0.82), which gave a clear zone of inhibition (ZOI) seen against a purple background

Rf  retardation factor