Question

Optimum relative humidity (%) for storage of Onions is *



60-65%

65-70%

70-75%

80-85%

​

Answer 1

Answer:

The processes required to store onions properly.

Once they are stored, onions undergo the following processes:

The drying process

The processes of raising or lowering their temperature

Conservation or storage proper

These processes are controlled by the Multiserver from AgroVent systems BV.

The onion drying process

The aims of the onion drying process are:

To remove all of the surface water or moisture from the onion

To dry three or four layers of the onion skin, therefore sealing the onion

To dry the stem and therefore also seal this part of the onion (remember that once the stem is cut, it is left open and must be kept as dry as possible.)

Storage: Well dried onions.

Well dried onions.

It is best to dry onions at between 25 and 30° Celsius..

Storage: Multiserver

Multiserver

The Multiserver programme for drying onions will ensure that the turbines work the maximum number of hours to extract moisture from the onions as quickly as possible, whilst maintaining the temperature between 25 and 30°C, and the relative humidity between 60% and 65%. In doing so, the aim is not to dehydrate the insides of the bulbs, but rather the 3 or 4 outer layers which separate the bulb from the outside.

This process is completely controlled by the Multiserver, which constantly searches for the mixture of air with the highest drying capacity, by managing the doors, turbines, heaters and condensers.

The processes of raising or lowering the temperature of the