Table 2 Antimicrobial activity of 5 mg crude extracts of F. vesiculosus against various MRSA strains using the disk diffusion method.(n = 3).

From: The Screening and Evaluation of Fucus serratus and Fucus vesiculosus Extracts against Current Strains of MRSA Isolated from a Clinical Hospital Setting

MRSA Strain

Ethyl Acetate

Acetone

Methanol

Water

618

+

++

++

+

619

+

++

++

++

620

++

++

+

+

621

++

++

+

+

666

+++

+++

+++

++++

667

+++

+++

+

++++

668

+++

++++

++++

+++++

669

+++

++++

++++

+++++

670

++

+++

+++

++++

671

++

+++

++++

++++

672

+++

+++

++

+++

673

+++

+++

+++

+++++

674

++

+++

+++

++++

675

++

++

++

+++

676

++++

+++++

++++

+++++

677

++

++

+

++

678

++

++

++

++++

679

+++

+++

+++

+++++

680

+++

++

++

++

681

++

+++

+++

+++++

682

++++

+++++

++++

+++++

683

+++

+++

+++++

+++++

684

+

+

++

685

++

++

++

686

+++

+++

+++

++++

687

+

++

688

+

++

689

++

++

+++

Positive controla

++++

++++

++++

++++

Negative controlb

  1. aChloramphenicol antibiotic disk - 10 µg/disk. bNegative control - 50 µL of specific solvent. Inhibition zone reported as diameter of clear inhibition (including 6 mm disk) in mm; - indicates no inhibition, + indicates inhibition zone of 6 mm–9.9 mm, ++ indicates inhibition zone of 10 mm–14.9 mm, +++ indicates inhibition zone of 15 mm–19.9 mm, ++++ indicates inhibition zone of 20 mm–24.9 mm, +++++ indicates inhibition zone of >25 mm.