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> Overview
| Gases
Nordan Smith can help you with innovative, yet practical
processes in food freezing and chilling, food processing,
food safety, packaging, and waste water treatment.
In addition to providing lively carbonation to soft
drinks carbon dioxide is also a safe and effective
alternative to sulfuric acid in purifying water
and controlling pH. A natural antimicrobial, carbon
dioxide is used to increase the shelf life of food
products protecting taste and texture, and reducing
the need for preservatives, natural and artificial.
In food processing applications, CO2 snow is used
for ingredient cooling, dough mixer and meat blender
cooling. The solid form of carbon dioxide is commonly
known as dry ice. Additionally, carbon dioxide can
be used to inert storage vessel head space, replacing
oxygen and extending storage life. Inert gas blanketing
also reduces tank corrosion from oxygen, eliminates
moisture in atmosphere air. CO2 also reduces fire
and explosion hazards.
Both liquid and gaseous nitrogen are widely used
in the food industry for many applications. Nitrogen
is used to rapidly freeze foods, reducing moisture
loss and maintaining food's appearance, texture
and taste. It is also used to extend shelf-life
in packaged foods by preventing spoilage from oxidation,
mold growth, moisture migration and insect infestation;
to pressurize beverage containers; and to refrigerate
perishables during transport.
Nitrogen's low boiling point and nontoxic properties
make it an economical choice for grinding and processing
dried fruits, delicate herbs and spices through
cryo-pulverization. In this process, liquid nitrogen
freezes and embrittles material so that it can be
easily ground.
By adding oxygen, fish farmers can enhance growth
rates and fish density for increased tank capacity.
Oxygen is used for the production of ozone to disinfect
food surfaces and aid in the shelf life extension
of fresh-cut fruits and vegetables.
Hydrogen is used to hydrogenate liquid oils (such
as soybean, fish, cottonseed, peanut and corn),
converting them to semisolid materials such as shortening,
margarine and peanut butter.
Extendapak™ specialty gases are used by food
processors and packagers to extend the shelf life
of their products. These gases include pure nitrogen,
carbon dioxide and oxygen or a mixture of these
products and functions to displace unwanted atmospheric
gases when used in MAP process.
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