Rare sugar

A rare sugar is a sugar that occurs in very small quantities in nature. Typically they occur in amounts too small to allow for economic separation from their underlying natural source and are typically made through biological processes such as fermentation or enzyme conversion to create the identical compound.

Japanese syrup that includes allulose, allose, and other rare sugars[1]

Many have interesting characteristics such as having lower calories than traditional sugars such as sucrose, fructose, glucose, or lactose.

Specific examples of rare sugars are:

• Allulose
• Allose
• Melezitose