Table 3 Antimicrobial activity of 5 mg crude extracts of F. serratus 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

++

+

6v76

+++

++

+++

677

+

678

+

+

679

++

++

+++

680

+

681

++

++

682

++

++

+++

683

++

++

+++

684

+

+

685

++

++

686

+

+

+

687

+

6−88

+

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.