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Improved Artificial Saliva for Studying the Cariogenic Effect of Carbohydrates

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Abstract

Saliva is a complex fluid that possesses many important functions regarding oral health. Many in vitro studies require relatively large quantities of saliva. While natural saliva would be the material of choice, it is difficult to obtain in sufficient quantities and varies in composition. Substitutes mimicking the physicochemical properties of saliva have been developed, but these are not appropriate to study the growth of mutans streptococci. Brain Heart Infusion (BHI) has been commonly used for this, but this medium is richer in nutrients than saliva. We therefore developed artificial saliva (AS) with nutrient levels resembling those in natural saliva as a substitute for natural human saliva (HS) to study the influence of different carbon sources on mutans streptococci growth. Growth of a wild-type Streptococcus mutans strain and S. mutans ATCC 15175 in BHI, HS, and AS was monitored anaerobically. Growth of S. mutans in the modified AS was very similar to the growth in HS, both in the absence and presence of different carbon sources. We therefore conclude that the developed AS is suitable for in vitro tests on S. mutans growth.

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Acknowledgments

Dr. Eva Söderling is thanked for providing the clinical S. mutans 2366 strain, and Kirsi Stenström is thanked for skillful technical assistance.

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Authors and Affiliations

  1. Danisco BioActives, Health and Nutrition, Sokeritehtaantie 20, 02460, Kantvik, Finland

    Marika Björklund, Arthur C. Ouwehand & Sofia D. Forssten

Authors
  1. Marika Björklund
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  2. Arthur C. Ouwehand
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  3. Sofia D. Forssten
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Corresponding author

Correspondence to Sofia D. Forssten.

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Björklund, M., Ouwehand, A.C. & Forssten, S.D. Improved Artificial Saliva for Studying the Cariogenic Effect of Carbohydrates. Curr Microbiol 63, 46–49 (2011). https://doi.org/10.1007/s00284-011-9937-x

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  • DOI: https://doi.org/10.1007/s00284-011-9937-x

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