That reaction isnt dramatic its expected
The culture conditions of isolated strains were as follows: LB medium (5.0 g/L yeast extract, 10.0 g/L tryptone, and 10.0 g/L NaCl, pH 7.0, sterilized at 115 for 30 min), potato dextrose agar (PDA) medium (200.0 g/L potato was cut into small pieces, boiled for 2030 min, and filtered with 8 layers of gauze), and glucose 20.0 g/L, agar 20.0 g/L, natural pH
The difference between developed and developing countries is striking, although some developing countries such as Brazil and China are catching up rapidly (respectively 75 percent and 78 percent in 2000)
Used daily, these products, aside from your regular fluoride toothpaste benefits, prevent the daily accumulation of new extrinsic coffee and tea stains