ControlledAtmosphere.
Precision DCA technology to extend the post-harvest life of fruit and vegetables, preserving organoleptic quality and commercial value for months.
Stoptheproduct'sbiologicalclock.
Controlled atmosphere allows fruit and vegetables to be stored for months with their organoleptic properties intact. Through rigorous control of O₂, CO₂, ethylene and humidity, we slow down the product's respiration rate.
At Isofred we implement advanced Dynamic Controlled Atmosphere (DCA) systems that adapt in real time to the fruit's metabolic state, enabling ultra-long storage without loss of quality.
Request a technical studyHow we do it.
Ethylene Control
Active removal to prevent accelerated ripening and product ageing.
Ultrasonic Humidification
High relative humidity maintained to prevent dehydration and product weight loss.
Certified Airtightness
Perimeter sealing systems and high-security pneumatic doors to prevent atmosphere leaks.
Productsandapplications.
Apple and Pear (ULO / DCA)
Ultra-long storage of 10 to 12 months for Pink Lady, Fuji, Gala, Golden and Conference. DCA pull-down protocols tailored to each variety and harvest week.
Stone Fruit
Low-O₂ DCA systems for peach, nectarine, plum and cherry. Integrated rapid pre-cooling to lock the metabolism from harvest.
Kiwi and Berries
Micro-atmosphere control with active ethylene removal for Hayward kiwi and blueberries. Senescence losses cut by over 60% compared with a conventional room.
Table Grapes
High-humidity protocol (92-95% RH) with ethylene catalysis. Commercial life extended by more than 8 weeks without loss of firmness or stem browning.
Banana and Tropical Fruit
Controlled atmosphere protocols adapted to banana, mango, avocado and pineapple. Ethylene and temperature control to manage ripening at origin and destination, cutting losses across the chain.
¿Necesita una cámara a medida?
Request a technical studyDoesyourfruitripensoonerthanitshould?
Fruit naturally emits a gas as it ripens. If that gas builds up in the room, it accelerates the ripening of the whole batch. What should last months lasts weeks. We control and remove that gas so the fruit waits at exactly the right point.
Going further, by reducing the oxygen inside the room the fruit breathes more slowly and ages more slowly, just as we sleep better with the windows closed. The practical result is 2 or 3 extra months of shelf life, with better texture and far less waste.
Request a post-harvest studyDCA: Dynamic Controlled Atmosphere
Dynamic O₂ < 1%. The system adapts oxygen levels week by week to the batch's real metabolism. Maximum organoleptic quality after 10-12 months of storage
CO₂ Scrubbing
Active absorption of the CO₂ generated by fruit respiration. Keeps CO₂ within each variety's protocol. Soda lime systems or molecular adsorbers
Ethylene Catalysis
Active removal by catalytic oxidation or potassium permanganate. Ethylene below 0.001 ppm. Halts accelerated ripening and premature product ageing
Engineeringanddeliveryfromstarttofinish.
We deliver every phase of the controlled atmosphere project with our own team, from the post-harvest audit to atmosphere pull-down and the first storage season.
Engineering and installation work in direct coordination to guarantee certified airtightness, sensor calibration and the integration of all gas equipment with the room's refrigeration system.
Request a technical studyEngineering and technical design
In-house engineering department specialised in controlled atmosphere, post-harvest and gas systems for the fruit and vegetable industry.
- Gas renewal calculation by variety, mass and temperature
- Sizing of N₂ generators (PSA or membrane)
- Design of the CO₂ scrubbing and ethylene catalysis system
- Atmosphere control software and pull-down curves per variety
- Technical documentation, pull-down protocols and operator training
Installation and infrastructure deployment
We deliver controlled atmosphere facilities with our own team, guaranteeing certified airtightness and integration with the room's refrigeration systems.
- PSA or membrane nitrogen generators
- In-line O₂ and CO₂ analysers with automatic calibration
- Ethylene removal systems (KMnO₄ or UV catalyst)
- High-airtightness pneumatic doors
- Perimeter foam sealing and certified pressure test
- High-efficiency ultrasonic humidifiers
- 24h monitoring with alarms and remote access
Ourprocess.
CA audit and design
We define the optimal gas profile by variety, stored mass and commercial destination. Sizing of generators, scrubbers and control systems.
Airtight construction
Complete perimeter sealing, pneumatic door installation and certified airtightness testing. Without airtightness there is no controlled atmosphere.
Atmosphere pull-down
Controlled N₂ injection to displace O₂ down to the setpoint. Progressive DCA activation adapted to the batch's metabolic rate.
Continuous monitoring
24h control of O₂, CO₂ and ethylene with remote access. Periodic sensor calibration and annual preventive maintenance contract.
Realcontrolledatmosphereprojects
Girona Fruits - Controlled Atmosphere for Apples
Controlled atmosphere installation for apple storage in Girona: 8 ULO chambers with an estimated surface of 8,800 m², capacity for 28,000 t of apples per year.
Piñana / Conjuntfruit - Controlled Atmosphere Storage
Controlled-atmosphere chambers with in-house SCADA (32 chambers) in Torrefarrera, Lleida, with 23,879 m³ of cold storage and capacity of up to 6 million kg per day. Fruit storage for up to 12 months.
Baró e Hijos - Storage and Ripening
Family business founded in 1962 in Albatàrrec (Lleida), with 500 ha of own land and 17,000 t/year of stone fruit under the Marquesa brand. Two facilities: Albatàrrec and Sudanell (7 chambers), with automated ripening, persimmon de-astringency and in-house SCADA.
Needacontrolledatmospherefacility?
Our technical team analyses your variety, stored mass and commercial destination to define the optimal gas protocol. Audit with no obligation.