Vegetable storage

Vegetable storage

Reduced losses of vegetables and fruit during long storage

1.5–2×
Storage extension
Extended product storage life
90%
Mold reduction
Destruction of fungal spores
30–50%
Loss reduction
Reduced product spoilage
0
Chemicals
No preservatives or fungicides

Storage losses of vegetables and fruit range from 20 to 40% of total volume. Main causes are mold development, bacterial rot, premature sprouting and wilting. Ozonation solves these problems comprehensively, extending storage life by 1.5–2 times without chemical agents.

Unlike fungicides and preservatives, ozone does not accumulate in products, decomposing to oxygen. This is especially important for organic farming and production of eco-friendly food.

Principle of action: Ozone destroys mold, yeast and bacteria on vegetable surfaces and in storage air. It also breaks down ethylene — a gas that accelerates ripening and aging of fruits.

Effectiveness of vegetable ozonation

Storage life extension with ozonation
CropWithout ozoneWith ozoneIncrease
Potatoes4–5 months6–7.5 months+2.5 months
Carrots4–6 months7–9 months+3 months
Cabbage4–5 months6–8 months+2–3 months
Onions5–6 months8–9 months+3 months
Beets5–6 months8–9 months+3 months
Apples4–6 months7–9 months+3 months

Storage disease control

Main storage diseases of vegetables are caused by fungi and bacteria. Ozone is effective against all major pathogens:

  • Potato late blight — 60–80% reduction in infection
  • Gray mold (Botrytis) — 95% spore destruction
  • Wet rot — suppression of bacterial development
  • Fusarium — 70% reduction in infection
  • Fruit penicillium — 90% spore destruction
  • Carrot blackleg — prevention of development
With regular ozonation (2–3 mg/m³, 4–6 hours daily), potato late blight infection decreases from 15–20% to 3–5%, saving up to 30% of the crop.

Vegetable storage ozonation modes

Recommended treatment modes
CropConcentrationTreatment timeFrequency
Potatoes2–5 mg/m³4–6 hoursDaily
Carrots3–5 mg/m³4–8 hoursDaily
Cabbage3–5 mg/m³4–6 hoursDaily
Onions5–10 mg/m³2–4 hours2–3 times per week
Apples2–3 mg/m³4–6 hoursDaily
Citrus fruits3–5 mg/m³4–6 hoursDaily

It is important to consider that ozonation mode depends on temperature, humidity and product condition. At high humidity (over 95%), ozone effectiveness increases.

Additional effects of ozonation

Odor elimination

Ozone neutralizes odors of decay, mustiness, chemicals in storage

Sprouting suppression

Slowing sprouting of potatoes and onions without chemical inhibitors

Ethylene breakdown

Ethylene oxidation slows ripening and aging of fruits

Disinsection

Destruction of pest insects and their larvae in storage

Economic effect

Implementation of ozonation in vegetable storage provides significant economic benefits:

IndicatorWith ozoneWithout ozone
Equipment payback for ozonation of a 1000-ton vegetable storage is 1–2 storage seasons through loss reduction and higher sales prices.

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