Aloe Vera Extract-Mediated CuO NPs as Catalysts for the Synthesis of 4-Hydroxy-3-Methoxybenzaldehyde-Connected Piperidine Derivatives and Their Antibacterial Activity

Table 2

Antibacterial activity of Gram-negative and Gram-positive for compounds 2a-2j with their MIC values.

Gram negative (µg/mL)			Gram positive (µg/mL)
Compounds no	E. coli	P. aeruginosa	L. plantarum	L. innocua
2a	10	21	9	30
2b	9	8	14	11
2c	11	10	4	17
2d	5	12	32	21
2e	13	18	10	12
2f	15	9	7	31
2g	12	20	20	16
2h	16	11	15	10
2i	8	15	23	14
2j	20	17	28	18
Erythromycin	7	7	5	9

Compounds 2c and 2d are highly active in antibacterial activity.