AliSOL is a specific range of gases and gas mixtures certified for food use, foodgrade materials and plant, technologies and services developed by Sol that fully meets the requirements of packaging food products in protective atmosphere.

Modified atmosphere packaging

Packaging of food in modified or protective atmosphere is a packaging technology in which the normal composition of the air inside the package is modified in a controlled way. Packaging in protective atmosphere prolongs the shelf life of the food in a natural way, without altering its taste and sensory characteristics.

Oxygen, nitrogen, carbon dioxide, argon, helium and nitrous oxide are food-grade certified gases; part of the category of additives authorised for use in food companies and are the main components of the mixtures used in protective atmospheres. The AliSOL range makes it possible, with mono-gases and pre-constituted mixtures with various percentages of the main gases listed above, to cover adequately the requirements of food companies, guaranteeing respect for the purity specifications of products classified as food additives, in accordance with HACCP procedures.

Protective atmospheres are used for packaging many kinds of food products, including:

• White and red meats
• Vegetable products of ranges IV and V
• Fish products
• Fresh filled pasta
• Milk and cheese products
• Bakery products
• Coffee and powdered products

Effect of food-grade gases in MAP

Nitrogen (N₂) and argon (Ar) are gases used to reduce oxygen content, to avoid oxidation, to retard the growth of aerobic microorganisms and to maintain the packaging volume.

Carbon dioxide (CO₂) has a significant indirect effect in controlling microbial activity with bacteriostatic action.

Oxygen (O₂) is used to maintain the red colour of meat and to avoid anaerobic fermentation in vegetable products .

Nitrous oxide (N₂O) is mainly used as a propellant in fat based liquid products.

Helium (He) is used to trace barrier materials in food packages.

The AliSOL range includes materials and food-grade certified devices for distributing, controlling and handling food-grade gases.