CO2 detection: Enhanced ripening process of fruit and vegetables through carbon dioxide monitoring

Plants and their fruits are living organisms with a metabolism. They lose water, get sick and can even die. In order to achieve optimum quality from the blossom to the fruit (or vegetable) and finally to the end consumer, it is important to improve the storability and transportability, and thus, to extend their life cycle. A suitable approach for this is the controlled CO₂ concentration monitoring.

How can we influence the ripening process?

To begin with, fruits are distinguished into two types. Those that ripen after harvest (climacteric) and those that must be harvested when ripe since their metabolism is practically over (non-climacteric).

Berries, for example, are non-climacteric, as they tend to have a low storage potential. Apples and pears on the contrary can be stored for months and ripen gradually.

To influence and reduce their metabolism, it is necessary to keep the temperature in the storage and transport room at a constantly low level. Other influencing factors include humidity and a low supply of light.

Transmitters and sensors for measuring the temperature and relative humidity

In addition, the atmosphere (air composition) where fruits are stored can be changed (so called 'controlled and modified atmosphere'). This is called a controlled and modified atmosphere. By adding CO₂ (carbon dioxide), the air mixture is changed so that less oxygen is available for metabolism. Therefore, it is a good idea to monitor and control the CO₂ concentration constantly.

However, caution is required when handling CO₂. As the gas is colour- and odourless, humans cannot detect the CO₂ level. This means that leakages can lead to an uncontrolled, increased CO₂ concentration, and thus, can cause damage both to humans and plants.

Knowing about the positive effects of an increased CO₂ concentration is very advantageous because

• the quality of your products increases,
• food stays fresh for longer,
• personal injuries are avoided,
• handling with CO₂ is safer,
• the dry ice production can be controlled more accurately,
• the cold chain can be maintained and
• you will create the right atmosphere!

CO₂ sensors and detectors

Our various CO₂ detectors, suitable for constant CO₂ concentration measurement and monitoring, are equipped with precise CO₂ sensors in wide measuring ranges.

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