Biosynthesis, Characterization, and Bioactivities Evaluation of Silver and Gold Nanoparticles Mediated by the Roots of Chinese Herbal Angelica pubescens Maxim

Table 1 Diameter of zone of inhibition (mm) of DH-AgNps against pathogenic microorganisms

Pathogenic microorganisms	Zone of inhibition (mm)^a
Pathogenic microorganisms	NEO30 (30 μg/disc)	15 μg/disc	30 μg/disc	45 μg/disc
Escherichia coli [ATCC 10798]	15.20 ± 0.20	12.75 ± 0.85	13.34 ± 0.88	14.00 ± 1.15
Staphylococcus aureus [ATCC 6538]	15.60 ± 0.40	15.20 ± 0.58	16.00 ± 0.55	17.30 ± 0.44
Pseudomonas aeruginosa [ATCC 27853]	11.50 ± 0.50	12.00 ± 0.00	12.25 ± 0.25	13.00 ± 0.50
Salmonella enterica [ATCC 13076]	15.00 ± 0.00	11.25 ± 2.75	14.00 ± 1.00	12.00 ± 2.00

^aMean diameter of three discs; 30 μL of suspensions containing purified nanoparticles