silos nitrogen food preservation

FOOD STORAGE WITH NITROGEN

DISINFESTATION AND PRESERVATION
OF CEREALS, PULSES, HERBS AND DRIED FRUITS

The storage of cereals, fruits, vegetables, pulses, tobacco etc. using toxic chemicals for disinfestations is no longer acceptable for healt reasons. Storage under nitrogen overcomes this objection, but conventional methods of producing nitrogen are expensive. Now nitrogen is available as AGROGAS at only a fraction of the cost of merchant nitrogen.

The Agrogas plant produces nitrogen with a residual oxygen content which can varied from 0,01% to 5%. The operating process is the simplest and cheapest available. Inside silos and wharehouse in which the products are stored the normal oxygen-rich air is replaced by an atmosphere consisting primarly of nitrogen. This low-oxygen nitrogen atmosphere is named “Agrogas”.


The storage facilities should be necessarily air tight in order to prevent the loss of Agrogas and the inflow of oxygen-rich air.
If leakage does occur the Agrogas plant automatically starts up when the oxygen content rises above a specific level.

Fields of application:

The use of Agrogas has been shown to be both technically and economically superior for the preservation of stored products such as:

1. Cereals and seeds stock including maize
2. Dried tobacco
3. Pulses such as beans, soya and ground nuts
4. green coffee and cocoa
5. dried leaf products, as tea and others

The economic advantages of AGROGAS:

- The hazards of explosion and spontaneous combustion which are ever present during loading and unloading of stored cereals are eliminated
- Reduced operating costs of storage facilities since Agrogas both rapidly disinfects and prevents putrification and fermentation
- The protein content of foodstuffs preserved with Agrogas remains significantly higher than that under conventional chemical preservation so that market value is higher
- No insurance against explosion and spontaneous combustion is necessary
- Agrogas is much cheaper than merchant nitrogen, chemical fumigants or low temperature ventilation
- Long life Agrogas plants ensure rapid pay-back and convenience of availability when and where required
- Agrogas is not toxic to either humans or animals
- Insect, larves and rodents are destroyed within hours or days
- Processes of erobic putrefaction are arrested
- Germination processes are arrested
- Contamination by mycotoxins is avoided
- The development of mould and fermentation are prevented
- The protein content of foodstuffs is maintained
- Oils in foodstuffs do not degenerate
- Agrogas permits storage at relatively high humidity (up to the limit at which anaerobic putrifaction sets in)
- Residual oxygen and carbon dioxide content can be adjusted to specific needs
download pdf