Friday, 09 March 2018 19:30

OctoFrost: How to achieve premium quality IQF raspberries

One of the most challenging products for IQF freezing are raspberries. Raspberries are delicate berries with particularities which make them brittle when frozen and easily breakable into crumbles during the freezing process. There are some essential aspects that IQF raspberries processors need to keep in mind while individually quick freezing this much-loved berries, if they are aiming for premium results.


The first step for achieving premium IQF raspberries is the raw material.

The quality of the fresh raspberries that goes into the IQF tunnel freezer is very important. Too overripe berries are more fragile and will be easily damaged. Also, the way the berries are picked is quite important. Raspberries that are machine-picked are usually more damaged than handpicked raspberries and if it rains during the harvesting season then the challenge is even greater. 

The second step for premium IQF raspberries is the freezing pre-treatment process.

It is highly recommended that raspberries are pre-cooled in cooling chambers between 5 0C and 8 0C. Sometimes the raspberries are washed and sprayed with chlorine.

The third step for achieving premium IQF raspberries is choosing the right IQF freezing equipment.

There are many options nowadays when it comes to freezing equipment, and most of the time, raspberry processors are finding it difficult to choose between different IQF manufacturers.

The OctoFrost IQF tunnel freezer is one of the only freezing equipment that has proven excellent performance to handle the most difficult and even overripe raspberries. Compared to a traditional IQF belt freezer, the OctoFrost produces higher percentage of first class berries and consequently avoids the crumble formation.

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11th World Conference IRO
Bulgaria, 6-9 may 2018
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