Heat degrades food nutrition and flavor, and size reduction can impart tremendous heat. Cryogenic fine grinding is being tested to deliver superior foods and new packaging materials.

Charles Samer, senior research engineer, Air Products Inc., Allentown, PA. Source: Air Products and Chemicals Inc.

Technicians in Air Products’ applications laboratory inspect a Microtec turbo-mill in the company’s applications lab. The mill is paired with cooling conveyors  and liquid nitrogen to boost yields of finely ground particles with a narrow size distribution. Source: Air Products and Chemicals Inc.

Nitrogen is the most ubiquitous gas, accounting for more than three-quarters of the world’s atmosphere. In a liquid state, it has a boiling point of -195