Abstract
Dental caries is a highly prevalent disease caused by colonisation of tooth surfaces by cariogenic bacteria, such as Streptococcus sobrinus and Streptococcus salivarius. Reducing initial adherence of such bacteria to teeth may delay onset of caries. Many foods, such as milk, can inhibit microbial adherence. In this investigation, the effect of untreated (UT) and enzyme-treated (ET) dairy powders on adherence of S. sobrinus and S. salivarius to hydroxylapatite (HA), an analogue of tooth enamel, was examined. Untreated (UT) acid whey protein concentrate (AWPC) 80 inhibited streptococcal adherence to phosphate-buffered saline-coated HA (PBS-HA) and saliva-coated HA (S-HA) by >80% at ≥31.25μgmL-1. UT sweet WPC80, buttermilk powder and cream powder also significantly reduced adherence (P<0.05). Enzyme-treatment of all dairy powders reduced their anti-adhesion activity. However, ET sweet WPC80 significantly inhibited growth of these streptococci (P<0.05) at ≥0.6mgmL-1. Therefore, dairy powders may reduce progression of dental caries by their anti-adhesion and/or antibacterial activity.
| Original language | English |
|---|---|
| Pages (from-to) | 280-289 |
| Number of pages | 10 |
| Journal | Journal of Functional Foods |
| Volume | 3 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Oct 2011 |
| Externally published | Yes |
Keywords
- Dairy powders
- Fluorescence
- Growth inhibition
- Inhibition of adherence
- Streptococcus salivarius
- Streptococcus sobrinus