Natural sugar-free cranberry juice can slow the regrowth of dental plaque and reduce the production of acid that erodes enamel, researchers at the University of Illinois Chicago have found, according to infohub.kz.
The experiment set out to test how organic compounds in cranberries affect bacteria in the mouth. The berries contain proanthocyanidins — natural antioxidants with anti-inflammatory properties that prevent harmful microorganisms from attaching to tissue cells.
The study involved 14 children and 8 adults. Participants rinsed their mouths and drank small portions of one of three beverages: 100% pure sugar-free cranberry juice, a sweetened cranberry juice drink, or plain water. Analysis of plaque samples before and after the procedure showed that bacteria multiplied more slowly in those who drank the pure juice.
The researchers stress that the protective effect comes specifically from the absence of sugar and industrial sweeteners. Pure juice lowers acidity and thereby prevents minerals from being leached out of enamel, whereas sweetened cranberry drinks do not have this effect.
The authors note that larger-scale tests are needed before final conclusions can be drawn. Because pure juice has a pronounced sour taste, the scientists are considering adding carefully selected sugar substitutes to create a functional beverage.