Streptococcus - Beneficial

Also known as:  Streptococci (plural name)

Beneficial Streptococci are a group of Beneficial Streptococcus Bacteria - note that Streptococcus Bacteria  can be either beneficial or detrimental depending on its environment and circumstances.  This topic is concerned only with the beneficial strains of Streptococcus.

Carbohydrates/Organic Acids

 Streptococcus bacteria are responsible for (and are often used commercially in) fermenting Lactose - resulting in its conversion to Lactic Acid (for example, in many fermented Milk products):

 Caution:  Lactic Acid production within the Mouth is instrumental in the formation of Plaque that leads to Tooth Decay.

 Streptococcus faecium

 Streptococcus thermophilus