Table 3.

MIC (minimal inhibitory concentration) values (mM) of tested compounds against selected microorganisms.

Compounds	E. coli (Gram−)	Bacillus sp. (Gram+)	Staphylococcus Epidermidis (Gram+)	Streptococcus Pyogenes (Gram+)	Candida sp. (Gram+)
5-CQA	7.06 (2.5 mg/mL)	˃7.06 (2.5 mg/mL)	˃7.06 (2.5 mg/mL)	˃7.06 (2.5 mg/mL)	˃14.11 (5 mg/mL)
Li 5-CQA	6.46	˃6.46	˃6.46	˃6.46	˃12.91
Na 5-CQA	6.20	˃6.20	˃6.20	˃6.20	˃12.40
K 5-CQA	5.96	5.96	2.98	˃5.96	5.96
Rb 5-CQA	2.63	5.27	5.27	2.63	5.27
Cs 5-CQA	4.79	˃4.79	˃4.79	˃4.79	˃9.58
Kanamycin (positive control)	0.21	0.21	0.21	0.21	0.41
Ampicillin (positive control)	0.43	0.57	0.57	0.57	0.57