Antibacterial Activity of Enzymatically Hydrolysed Pomelo Peel Pectin
Pectin hydrolysates were made from pomelo peel pectin, in which a complex pectinase was used as a catalyst. And their inhibitory effects on Escherichia coli, Bacillus subtilis and Staphylococcus aureus were studied. One hydrolysate with the highest inhibition was obtained. Its antibacterial effects were investigated using double dilution method. The hydrolysate showed a high antibacterial activity. It could inhibit the growth of the bacteria at low concentrations, and its minimum inhibitory concentrations on Escherichia coli, Bacillus subtilis and Staphylococcus aureus were 3. 75, 7. 50 and 3. 75 g · L-1, respectively. It could kill these bacteria at high concentrations with the minimum bactericidal concentrations of 3. 75, 7. 50 and 7. 50 g · L-1, respectively.