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- W4247652258 abstract "Objective: The purpose of this study was to determine the optimal conditions for the growth and hydrogen peroxide production by vaginal lactobacilli. Study Design: Two vaginal lactobacillus strains were cultured under different growth conditions (temperature, pH, agitation, and growth media) with a fractional factorial experimental design. Results: The optimal growth conditions of Lactobacillus paracasei CRL (Centro de Referencia para Lactobacilus Culture Collection) 1289 and Lactobacillus crispatus CRL 1266 were temperature 37°C and initial pH 6.5, nonagitated cultures, in autolysat de levure; peptone, tryptone, Tween 80 et glucose (LAPTg) broth for L paracasei or in de Man-Rogosa-Sharpe (MRS) and LAPTg broths for L crispatus. The hydrogen peroxide production, detected only in agitated cultures, was higher at 37°C and pH 6.5. The oxidative metabolite produced the self-inhibition of the lactobacilli growth. In mixed cultures of lactobacilli and Staphylococcus aureus under the optimal conditions of hydrogen peroxide production, the pathogen growth was inhibited. Conclusion: The results provided information about the factors that affect the hydrogen peroxide production and about the most favorable conditions with which to obtain the highest biomass in the shortest possible time. (Am J Obstet Gynecol 2003;188:35-44.)" @default.
- W4247652258 created "2022-05-12" @default.
- W4247652258 date "2009-04-01" @default.
- W4247652258 modified "2023-10-14" @default.
- W4247652258 title "New catalyst for direct hydrogen peroxide production" @default.
- W4247652258 doi "https://doi.org/10.1016/s1351-4180(09)70140-0" @default.
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