Table 5 Total polyphenol content and effects on ABTS radical scavenging activity of lemongrass vinegar added with lemongrass extract or powder

Sample1)	μg gallic acid equivalents (GAE)/mL	ABTS radical scavenging activity (%) at 2.5%
V	490.9±5.12)a3)	43.2±0.7a
LV	559.4±3.4b	58.0±0.5ab
P3LV	825.5±4.0f	81.6±0.4d
P5LV	895.7±4.2g	91.0±1.4e
E1LV	594.7±22.7c	54.0±1.5ab
E2LV	619.9±1.2d	62.4±2.3bc
E3LV	783.3±18.4e	68.8±0.7c

V, general vinegar maded from brown rice wine; LV, lemongrass vinegar maded from brown rice wine containing lemongrass; P3LV, lemongrass vinegar added with lemongrass powder 3%; P5LV, lemongrass vinegar added with lemongrass powder 5%; E1LV, lemongrass vinegar added with lemongrass extract 1%; E2LV, lemongrass vinegar added with lemongrass extract 2%; E3LV, lemongrass vinegar added with lemongrass extract 3%.
Values are expressed as mean±SD of triplicate measurements.
Values with different letters (a-e) in the column are significantly different at p<0.05 according to Duncan's multiple range test.