Fig. 2From: Biologically active metabolite(s) from haemolymph of red-headed centipede Scolopendra subspinipes possess broad spectrum antibacterial activityThe crude extracts of red centipede’s haemolymph, gut and muscles were prepared and tested in antibacterial bioassays. For negative control, bacteria incubated with nutrient broth/PBS was used and for positive control bacteria incubated with 100 μg/mL of gentamicin was used. Asterisk represents P < 0.05. P values were obtained using two-sample T test and two-tailed distribution. a Represents 0% growth indicating potent bacteriostatic activity of 10% haemolymph, 100 μg/mL of muscle and gut extracts of red centipede against MRSA. b Represents cidal assay, indicating 50%, 80% and 68% viability of respective extracts against MRSA. c Represents more than 90% bacteriostatic activity of all the three extracts against B. cereus. d Also represents more than 90% bactericidal activity for all three extracts against B. cereus. e Represents 49%, 31% and 63% growth in bacteriostatic assays respectively against K. pneumoniae. f Represents 48%, 53% and 75% viability in bactericidal assays respectively against K. pneumoniae. g Represents 22%, 10% and 49% growth in bacteriostatic assays respectively against S. enterica. h Represents 55% and 78% viability for haemolymh and gut extracts however, muscle extracts was not active in bactericidal assays against S. enterica. i Represents 27%, 31% and 70% growth in bacteriostatic assays respectively against E. coli K1. j Represents 49%, 44% and 73% viability in bactericidal assays respectively against E. coli K1. k Represents nearly 50% bacteriostatic activity of all three extracts against S. marcescens. l Represents no bactericidal activity of centipede’s extracts against S. marcescens. m Represents nearly 83, 81 and 47% growth of centipede’s haemolymph, gut and muscles respectively against P. aeruginosa. n Represents no bactericidal activity of centipede’s extracts against P. aeruginosa. o Represents nearly 33, 19 and 38% growth of centipede’s haemolymph, gut and muscles respectively against S. pyogenes. p Represents 63, 50 and 51% viability of the extracts respectively against S. pyogenes. The results are representative of several experiments performed in duplicates and expressed as the mean ± standard errorBack to article page