Table 2 Comparative antimicrobial efficacy of CFLE, CFLE-containing biosynthesized gold nanoparticles (CFLE + nanogold), and the standard antibiotic Ciprofloxacin against Gram-negative and Gram-positive bacteria.

From: Biogenic synthesis of gold nanoparticles using Coleus forskohlii leaf extract enhances anticancer activity against HT-29 cells and modulates the p53 regulated immune microenvironment in colon adenocarcinoma

Type of treatment

Inhibition zone (mm)

E. coli

P. aeruginosa

B. subtilis

Staphylococcus aureus

CFLE

0

7.3 ± 0.18

0

10.50 ± 0.13

CFLE + nanogold

8.20 ± 0.12**

14.10 ± 0.15**

13.70 ± 0.19**

9.80 ± 0.18

Ciprofloxacin (5 µg)

26.23 ± 0.28***

41.75 ± 0.19***

36.92 ± 0.13***

39.60 ± 0.29***

  1. Data are presented as mean ± standard error (n = 5); asterisks indicate statistical significance: ** = P < 0.01, and *** = P < 0.001.
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