using our technology, an independent laboratory confirmed that the
product is safe.
Sesame seeds are often treated with ethylene oxide (ETO) because of
the possible contamination in the countries of origin, which is considered
carcinogenic and genotoxic and is therefore not approved in the EU.
Black pepper, for example, is often very heavily loaded with thermophilic
spore-forming agents. Here, too, we have developed a solution
for safe sterilization.
How does your process contribute to food safety?
Our patented continuous process ensures that the product in the rotary
drum, with its welded-in helix, is constantly in motion and optimally
mixed. This process means the product is treated uniformly, and dead
spots are avoided. The rotary drum has several heating zones. In each
heating zone, sensors continuously measure the product temperature
which is then modified to the adjustable setpoint. The product to be
treated is thus never overheated nor treated at too low temperature.
If you want to roast nuts with a conventional hot air roaster, this
usually offers two roasting zones. In an instance of different product
sizes or water contents, under- or over-treatment can occur. With our
process, we can set the parameters very precisely and individually to
get the desired result. The machine adjusts itself, thanks to its four
self-regulating heating zones.
Does the product have to be homogenized before being fed in?
No, that isn’t necessary.
The range of product applications seems to be very wide….
Yes, we have sold a large number of machines for pasteurizing and
roasting nuts. We are also successful in the area of seeds. We have also
sold equipment for the sterilization of spices and herbs. We can roast
onions with a newly developed process. Roasting onions with hot air
creates a slightly bitter aroma. With our process, the air is displaced and
with it this annoying bitter taste. We can even spray on some additional
oil and achieve an additional "taste kick". For example, we can pasteurize
pumpkin seeds and add brine to them at the same time. But we
Food Technologies 7
have also implemented projects and developed solutions for tea, cereals,
mushrooms, malt, animal feed, insects and many other bulk goods.
So you can offer tailor-made treatment methods at the customer's
That is exactly our strength! We work very closely with the customer.
In our trial center in Senden, we can carry out tests together with our
customers online or in person in order to be able to offer them a customized
solution afterwards. Nuts, herbs, seeds, spices, tea and many
other products can be treated by us. In our trial center, for example,
we can process up to 500 kg of nuts per hour.
Does the system have online sensors for the required parameter
We install various sensors, e.g. for temperature monitoring, the water
content and of course the dwell-time control, to set the essential
parameters. Everything is recorded via readable data loggers.
How do you secure validation?
We outsource testing to external independent contract laboratories.
We have already had over 10,000 examinations carried out, clustered
according to individual product groups.
Food fraud has become a central issue. This applies to many areas
such as wine, asparagus, oils, etc. I think there is certainly strong
interest in the area of spices, some of which are very expensive.
We know from customers that there is certainly ingenuity when it
comes to fraud, for example to increase the weight, stretch the product,
mix organic goods with conventional goods, etc.
With a partner laboratory, we sprayed a water-based isotope marker
and tried it on nuts, herbs, and spinach. It works like a fingerprint, which
was still detectable on the nuts even after they had been ground. For many
customers this is of great importance when we’re talking about food fraud.
Let's stay with the roasting for a moment: what results have