Issue 3 2016

ingredients 21
DuPont study confirms anti-caries effect of xylitol
Scientific research at DuPont Nutrition & Health has found that the oral bacteria behind dental cavities are
significantly reduced in the presence of xylitol. Conducted using the DuPont dental caries simulator, the study
gives an improved understanding of results from previous clinical studies.
Xylitol is a naturally occurring sweetener with the taste and sweetness of sugar but just half the calories. The
European Food Safety Authority (EFSA) has recognised the claim that xylitol chewing gum reduces the risk of
caries in children.
Positive effect also in the presence of sucrose
Recently published in Archives of Oral Biology journal, the DuPont study evaluated the effect of sucrose and
xylitol on Streptococcus mutans – one of the main species of bacteria responsible for dental caries.
Xylitol was shown to have a significant impact on the bacteria, also when tested in combination with sucrose.
The xylitol used for the study was XIVIA ® Xylitol from the DuPont Danisco ® range.
Realistic results from dental simulator
“This in vitro study was the first to test the effect of xylitol on S. mutans using our in-house dental simulator,”
says Krista Salli, M.Sc. scientist, DuPont Nutrition & Health in Kantvik, Finland.
“It is encouraging to see that the results closely reflect clinical findings. This is evidence that the oral
environment created by our simulator is realistic and suitable for estimating the cariogenicity of food ingredients.
This will help us understand the mechanism by which xylitol exerts in benefits.”
Presentation at 2016 FDI World Dental Congress
Previous studies have shown that xylitol reduces acidity in the mouth by raising the pH level; slows the ability of
cariogenic bacteria to stick to teeth; and inhibits bacterial growth. EFSA has approved the following claim
related to xylitol use: ‘100% xylitol chewing gum reduces the risk of plaque in children and plaque is a biomarker
for dental caries’.
DuPont have presented additional new findings from a second study using the dental simulator at the 2016 FDI
World Dental Congress.
The published study entitled ‘Influence of sucrose and xylitol on an early Streptococcus mutans biofilm in a
dental simulator’ is available online at http://www.aobjournal.com/article/S0003-9969(16)30139-X/fulltext.
www.foodmagazine.eu.com issue three | 2016