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KMID : 1143520180060020009
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Journal of Korean Society of Oral Health Science
2018 Volume.6 No. 2 p.9 ~ p.16
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The effects of steviol glycosides extracted from Stevia rebaudiana Bertoni M. for Some Oral bacteria
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Kim Hyun-Dae
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Abstract
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This study analyzes the influence that steviol glycoside has on the growth of Lactobacilli, the chosen strain in the oral cavity, and total microbial counts in the oral cavity, as well as its antibiotic activity effect for Streptococcus mutans. The results of the study are to be utilized as basic data to search for the possibility of its extensive widespread use for the purpose of oral prevention. Analyzing the degree of influence that steviol glycoside has on the growth of Lactobacili inhabiting the saliva by using CRTⓡ bacteria medium, it was found that 3% of the control group compared to the test group showed a slight activity of Lactobacilli in the steviol glycoside solution. There was no activity in the steviol glycoside solution in 5%. The chosen strain showed a notable reduction of growth. The degree of change that steviol glycosides has on the number of microbial counts in the oral cavity affects the reduction of total microbial counts in the oral cavity in 3% & 5% steviol glycoside solution rather than the 3 % hypertonic solution and the control group 3% & 5% sucrose solution. The higher the contents of steviol glycoside solute(%) there is, the greater the reduction in the number of total microbial counts in the oral cavity. Also, measuring the antibiotic activity of steviol glycosides against Streptococcus mutans, the clear zone to which 3% & 5% sucrose solution were applied showed no antagonism at all. However, the clear zone to which the control group 3% & 5% steviol glycoside solution were applied showed conspicuous antibiotic activity.
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KEYWORD
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Microbial counts, Antibiotic activity, Steviol glycoside, Oral cavity
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