[The measurement of growth curve and generation time of lactobacillus]
OBJECTIVE:The purpose of this test was to understand the growth pattern of lactobacillus for the research of its cariogenicity. METHODS: The growth quantity of lactobacillus which was culture in a constant condition was measured periodically by spectrophotometry and flora counting,and its growth curve and generation time were measured. RESULTS: It was found that the logarithmic phase of lactobacillus was 6-16 hours after it was cultured.And its generatin time was 54 minutes. CONCLUSIN: The growth curve of lactobacillus was in accordance with streptococcus mutan.
Gu
S P
SP
Department of Oral Medicine,School of Stomatology, Shanghai Second Medical University. Shanghai 200011, China.
Liu
Z
Z
Song
P Z
PZ