. 2013 May 9;2013:802573. doi: 10.1155/2013/802573

Table 1.

Antioxidant and antimicrobial activities of standard*, crude extract, and purified compound from H. elongata seaweed.

	Antioxidant capacity	Antimicrobial activity
	EC₅₀ (µg/mL)	Inhibition zone (mm)
Crude extract	91.3 ± 1.98^a	9.95^a
Purified compound	14.8 ± 1.27^b	10.72^b
Fucoxanthin*	12.5 ± 0.98^c	10.89^b

Values are expressed as average of three replicates.

Values with different letters (a–c) in each column are significantly different (P < 0.05).

Antioxidant capacity was determined using DPPH^∙ scavenging assay.

Antimicrobial activity was determined against L. monocytogenes using disc diffusion bioassay. The diameter of the growth inhibition halos caused by the crude and purified samples and standard* was measured by a digital vernier caliper and expressed in millimetre.