Dates are exposed to the risk of contamination by parasites, and in particular moths, beetles, yeasts, and molds. The treatment of the product is currently done by fumigation of methyl bromide or phosphine.
However, these gases are highly toxic, difficult to handle, and are not compatible with organic farming. Morevover, methyl bromide is banned in more and more countries because it destroys the ozone layer. Our client was therefore looking to replace them with another method.
Dates are not a particularly fragile food. However, their high sugar content makes them particularly vulnerable to mold and yeast, in addition to moths and beetles larvae.
The main difficulty therefore consists in deactivating these microorganisms, while preserving the organoleptic properties: appearance, taste, and texture of the dates.
Our company has conducted a comprehensive study to ensure that the microwave treatment is effective while preserving the integrity of the dates. By testing different wavelength, power, and treatment duration, our company has established the most effective program in order to obtain an effective treatment against parasites and micro-organisms, while preserving the taste and appearance of the fruits.
We have proposed a microwave tunnel at 915 MHz who can treat up to 1200 kg/h of product, without the use of any chemical. The temperature of the dates reach around 75 °C for few minutes, which is sufficient to kill mold and pest.
By using the volumetric heating properties of the microwaves, our equipment is able to raise quickly and homogeneously the temperature of the dates, from core to surface.
The speed of the process, who last less than 10 minutes, allow a perfect sanitation of the dates, while preserving their organoleptic properties.
Finally, for an optimized logistic, the fruits can be treated directly in their final packaging !Contact us
Need help to find the best solution ?
Our free microwave and radio-frequency guide for food applications will help you to better understand these technologies, and find the solution the most adapted to your needs.Download your guide
PE-ALD for parts with low thermal budget
Our customer needed a solution for Atomic Layer Deposition to process three-dimensional parts with thermal stress. Discover how we helped him to move from ALD to PE-ALD process with our microwave plasma solutions.
Microwave pre-treatment of organic waste
Organic wastes and sludge are tough to recycle, despite of their energy potential. Discover how our microwave technology dramatically enhance renewable gas production and enables greater yields, in a faster time.