How does the REINARTZ screw press work, how is it constructed and how is it used, for example, for processing insects?

All these are questions that our colleague from technical sales will answer for you step by step in our video:


In cooperation with abc GmbH, REINARTZ has launched a project with the help of which a bioeconomy concept for the innovative use of residual materials from leaves, roots and stems of the pineapple plant has now been established in Costa Rica.

In our downloads you can find a video about it and get an impression of the project and the results so far:


This year at the international conference Insecta in Magdeburg: Our presentation on ‘Insect Processing for Food and Feed’. With our portfolio we cover all important areas in the processing of insects.

Have a look – it’s worth it!


In the animal feed sector, insects have long been used as an alternative source of protein – for example in feed for dogs and cats. Approval for livestock, such as poultry and pigs, is expected this fall.

But insects also have many advantages as a food source for us humans. For example, they contain a lot of high-quality protein, valuable monounsaturated and polyunsaturated fatty acids, as well as B vitamins and important minerals.

And similar to their use in animal feed, their use in the food sector would also be a relief for our climate. In direct comparison to animal breeding for covering human meat consumption, insects require much less space and water than cattle & co. The same is true for greenhouse gas emissions because these are also comparatively much lower with insects.

The advantages do not end there. The edible portion of insects is about 80 percent. To stay with cattle, here the proportionate share is just 40 percent.

Another food for thought: According to United Nations estimates, there will be more than 9.7 billion people on the planet by 2050. Currently, there are about 7.91 billion people. They and also their livestock and pets will need protein …

The first important step in this direction has been taken: according to EU approval, yellow, dried mealworms have been among the novel foods since May 2021. The larvae of the beetle Tenebrio molitor may be used, for example, in foods such as pasta, cookies or bars. We have been active in this field for many years and can therefore provide our customers in the insect sector with the best possible support. With our individual concepts, our efficient processes, and our high-performance equipment:


Protein production from insects for high-quality animal feed – an efficient and ecological alternative. CO2 balance of insects as well as the land and energy requirements for production speak for themselves. Production involves several stages, one of which is larvae fattening. The left image section shows Hermetia Illucens larvae (BSF) during rearing in the bioreactor.

But from the very beginning …

Insect larvae are rich in protein and full of essential amino acids. A perfect source for nutritious, healthy animal feed. The legal requirements for this are already partly in place: In aquaculture, they have been approved as feed throughout the EU since 2017. Insect food is also already a valuable alternative for dogs and cats. Approval at EU level to feed the insect meal to livestock is currently under review. It is expected that the use of insect proteins in poultry and pig feed will be allowed in autumn 2021.

An alternative feed source that can significantly improve our environmental footprint …

Back to insects and specifically to the black soldier fly (Hermetia Illucens): it goes through a so-called holometabolic life cycle, which consists of five development stages and lasts only 12 days before the adult stage and thus the maximum body size is reached.

Larvae fattening takes place in specially designed bioreactors. Important factors here are the substrate to be used, temperature regulation of environment and substrate, and the control of other influencing factors.
Using a sophisticated separation method, the larvae are then gently separated from the remaining substrate and prepared for processing in subsequent steps. The remaining substrate is used to produce insect fertilizer.

After devitalization, drying and optional pre-conditioning, high-quality insect meal and insect fat are obtained from the dried larvae with the help of REINARTZ machinery and system components. This is followed by post-processing of the obtained products, such as cooling of the insect meal, if necessary – depending on the production scale, and sedimentation or filtration of the insect fat to separate the remaining solids.

REINARTZ has been working on insect processing for many years and is one of the leading experts in this field. We provide support throughout the entire production process – starting with project planning, through demand-oriented engineering packages, to high-quality equipment individually developed to meet customer requirements, as well as implementation and commissioning. Around the globe, we work together with our customers to develop the solution package perfectly tailored to their needs.


Looking for an efficient way to warm up your seeds for further protein production? We have the solution! The product to be processed is heated uniformly – thus we ensure continuous feeding of the seed with simultaneous uniform heating. The result is high-quality protein cake.

By the way: This REINARTZ solution is also ideal for insect plants, for example for preconditioning black soldier flies for subsequent production. Please contact us for further details.

Insect revolution! Healthy, sustainable, protein rich and delicious

This is the motto of this year’s IFF Braunschweig online conference. Three days packed with valuable expert knowledge about the potential of insects as an alternative sustainable protein source as well as the entire production process are available for you.

As a leading expert Reinartz will be present – meet us on April 27, 2021 and we look forward to seeing you! Click here for program and registration.

BioeconomyREVIER: Shaping the Future in the Rhenish Mining Region

In the Rhineland, there is a scientific landscape for the bioeconomy that is unique in Germany. To what extent is this potential already being used in education and training for the regional economy? Where should regional competence and qualification profiles be sharpened? Questions like these were put under the microscope in a recently published study. As a major player from this region REINARTZ also has a clear stance on this, as our Managing Director Niklas Stadermann’s statement clearly shows (page 9). You may view and download the study online here:


The extraction of proteins is a continually topical issue in the animal feed market. Healthy and nutritious, yet economical feed is required. There are several ideas, but the chosen option must fit one’s own needs. Recently the macadamia nut was reported to be highly protein-rich and a wonderful alternative for feeding to poultry.

This raw material is by no means new to us. Years ago, we started the first series of trials for processing the rich “queen of nuts” and have continued to optimize press settings. Since then, numerous customers have already benefited from our solutions tailored to their individual needs. Because this is what REINARTZ is all about: we offer tailor-made solutions and not components from the catalogue. In addition, we have successfully developed many other alternatives – whether for the recovery of protein-containing press cake from plants or insect larvae. Or use of other raw materials for other applications. Please have a look at our raw material overview – we offer solutions for the processing and conversion of many different materials. Are you missing a resource in our list? No problem – we love challenges! Just contact us.

go-Inno – progress through innovation

In order to obtain high-quality proteins from the rapeseed press cake, the resulting temperatures in the press must be regulated with pinpoint accuracy. This is now possible thanks to a newly developed cooling method. Our project on this functional protein recovery, in cooperation with the consulting company abc GmbH, was funded by the German Federal Ministry of Economics as part of the “go-Inno” program. Here, companies are supported in the preparation and implementation of product and technical process innovations. Click here for the project description: