Antioxidant and Enzyme Inhibitory Potential of Streptomyces sp. G-18 Grown in Various Media

Table 2

Enzyme inhibition activities of Streptomyces sp. (G-18) extracts. The experiments were conducted in triplicate, and the results were presented as the mean value accompanied by the ±standard deviation (mean ± SD).

Samples	IC50 (μg/mL)
	Alpha-amylase	Lipase	Tyrosinase	Elastase	AChE	BChE
R5M	280 ± 0.8^e	NI	78 ± 1.8^b	NI	NI	NI
R5	167 ± 3.0^c	166 ± 5.4^b	96 ± 8.0^c	NI	NI	200 ± 4.0^b
YEME	178 ± 0.3^d	157 ± 5.8^a	94 ± 2.0^c	NI	NI	NI
R2YE	128 ± 0.5^b	225 ± 12^c	128 ± 5.1^d	141 ± 7.1^b	137 ± 1.0^b	NI
Acarbose	20 ± 0.1^a	—	—	—	—	—
Orlistat	—	432 ± 14^d	—	—	—	—
Kojic acid	—	—	18 ± 0.1^a	—	—	—
Quercetin	—	—	—	101 ± 0.2^a	—	—
Galantamine	—	—	—	—	1 ± 0.02^a	26 ± 1.4^a

NI; no inhibition. Different letters in the superscript of same column represents the significant difference in mean values, one-way ANOVA, post hoc Tukey, multiple comparison test ().