改写：Polysaccharides and exopolysaccharides were extracted from P eryngii PEPS and S thermophilus ASCC 1275 ST1275 EPS separately 17 both of which exhibited the antibacterial activity against E coli gra

Polysaccharides and exopolysaccharides were derived from P. eryngii (PEPS) and S. thermophilus ASCC 1275 (ST1275 EPS) separately [17]. Both types of polysaccharides exhibited antibacterial activity against E. coli (a gram-negative bacterium), S. aureus (a gram-positive bacterium), and L. monocytogenes (a gram-positive bacterium). The antibacterial inhibition zones and minimal inhibitory concentrations of PEPS and ST1275 EPS were enhanced through sulphation. This suggests that sulphation could be an effective means of enhancing the bioactivity of polysaccharides