Antagonistic activity of the (H_2O_2)~+ lactobacilli against E.coli in vitro
- VernacularTitle:产H_2O_2乳酸杆菌对大肠杆菌的体外拮抗作用
- Author:
Lili WANG
- Publication Type:Journal Article
- Keywords:
lactobacilli;
H_(2)O_(2);
antagonism;
urogenital infection
- From:
Basic & Clinical Medicine
2006;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the different ability to produce H_(2)O_(2+) of the vaginal lactobacilli and their potential antagonism toward E.coli in ivtro.Then to select the potential lactobacilli strain to treat the female urogenital infection.Method To detect production of H_(2)O_(2) by measuring the blue matter in water solution with absorbtion spectrophotometry.The lactobacillus and E.coli were cultured together in solid culture medium,followed by the measurement of inhibition zone around the lactobacilli after 24 hour.Results We selected 4 strains of lactobacilli from vagina.L.acidophilus1 and L.paracasei3 are the stronger to produce H_(2)O_(2).The largest diameter of the ring of inhibition is shown around the lactobacilli acidophilus 1.Conclusion The lactobacilli acidophilus 1 and lactobacilli crispatus are the most potential strains as antagonist to E.coli and their antagonism depend not only on lacid or H_(2)O_(2).
