Growth Media Affect Assessment of Antimicrobial Activity of Plant-Derived Polyphenols

Table 2

Effects of EGCG and the other test agents on the growth of selected Candida species in different growth media.

Strains	MIC (µg/mL)
	EGCG		Grape seed extract		Berberine chloride		Methyl salicylate^#		Chlorhexidine gluconate
	RPMI 1640	SDB	RPMI 1640	SDB	RPMI 1640	SDB	RPMI 1640	SDB	RPMI 1640	SDB
C. albicans	1250	>1250	>500	>500	>500	500	1.50%	0.75%	6.25	12.5
SC5314
C. albicans	1250	1250	>500	>500	500	500	1.50%	1.50%	3.12	12.5
ATCC 10231
C. glabrata	312.5	>1250	>500	>500	500	500	0.75%	0.38%	3.12	3.12
ATCC 66032
C. tropicalis	≥1250	1250	>500	>500	125	125	3%	0.75%	1.56	0.78
ATCC 13803
C. parapsilosis	1250	>1250	>500	>500	>500	500	0.19%	0.38%	3.12	6.25
ATCC 22019
C. kefyr	156.3	1205	>500	>500	62.5	62.5	0.38%	0.38%	0.78	0.78
ATCC 46764
C. krusei	78.1	>1250	>500	>500	125	125	0.75%	0.75%	1.56	1.56
ATCC 14243

The unit of MIC values is % of methyl salicylate (vol/vol).