Stream Peak’s Oxygen Absorber, O Sorb, is made from safe, non-toxic material. Oxygen Absorbers are used to prolong the shelf life of food products. O Sorb is also known as Oxygen Scavengers or Oxygen Absorbent. Commonly used in food packaging such as pastries and snacks, Oxygen Absorbers can reduce the aerobic environment to 0% oxygen. They prevent changes in the colour of food, prevent oils in food from becoming rancid, and retards the growth of oxygen-using aerobic microorganisms such as fungi. Without any aerobic bacteria and fungi growth, the shelf life of a food product will extend from 1 week to several months.