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Acrylamide

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Acrylamide is found in many foods and is considered potentially carcinogenic. We’ll tell you what you need to know about acrylamide and how to avoid it.

Acrylamide forms when high-carbohydrate foods are heated to high temperatures, especially above 180 degrees Celsius. The substance is created through the interaction of sugars contained in carbohydrates and the amino acid asparagine. This is found in cereals and potatoes, among other things.

Which foods contain a lot of acrylamide?

Baked, fried or roasted foods that contain a lot of carbohydrates and little water are particularly high in acrylamide. According to the consumer center, high acrylamide levels were found in these foods, among others:

Potato products: chips, fries, croquettes, fried potatoes
Pastries: toast, crispbread, cookies, gingerbread (especially those containing staghorn salt)
Coffee, especially instant coffee
toasted nuts and cereals

How harmful is acrylamide?

According to a report by the European Food Safety Authority (EFSA), the intake of acrylamide through food potentially increases the risk of cancer. This applies to all age groups, but especially to children, since they quickly absorb relatively large amounts of acrylamide due to their low body weight.

So far, there are no human studies that can prove the increased risk of cancer. However, various animal experiments have shown that the substance glycidamide – a major metabolite of acrylamide – can cause gene mutations and promote the development of tumors.

What you can do to avoid acrylamide

It is not yet possible to say exactly what quantity of acrylamide is harmful to health. Accordingly, it makes sense if you try to consume as little of it as possible. Here are some tips on how to avoid acrylamide:
Try to eat the above foods high in acrylamide in moderation.
Prepare carbohydrate-rich foods such as potatoes or rice gently: no acrylamide is produced during cooking, stewing or steaming.
If you want to bake, roast or roast potato products, do this at the lowest possible temperatures (maximum 200 degrees in the oven or 180 degrees with convection) and as briefly as possible. Turn the food so it doesn’t get too dark – a light brown is enough. The browner the crust, the higher the acrylamide content.
When preparing fries in the fryer, you should make sure that the temperature stays below 170 degrees. Use enough oil, preheat the fryer and only cook small batches at a time. Otherwise the cooking time will be longer.
Don’t store potatoes in the fridge. The low temperatures increase the sugar content, which later promotes the formation of acrylamide during preparation.
The consumer center advises breakfast cereals that do not consist of toasted ingredients to avoid acrylamide. Put together your own muesli, for example, from fresh oats and other unroasted grains.

Reduce acrylamide when baking

Acrylamide is also formed when cereal products are baked. With these tips from a study by the University of Hohenheim, you can reduce the formation of acrylamide when baking:
Since yeast breaks down the protein asparagine and sugar, both of which are responsible for the formation of acrylamide, you should allow longer rising times for your yeast dough (about 2 hours).
You should not flour your baked goods on the outside, as the acrylamide forms in the freshly applied flour.
You should bake your baked goods at lower temperatures, between 160°C and 170°C, as the acrylamide content will probably rise sharply above 170° Celsius.
Because most acrylamide is found in browned crusts on baked goods, avoid dark browning.

You have probably heard of acrylamide before. The substance is formed, for example, when fries are fried, but also when coffee is roasted. But don’t worry: you can continue to enjoy your favorite drink without worrying. Also several cups a day. You can find out here why this is the case and which types of coffee have the acrylamide content reduced to a minimum.

Why acrylamide in coffee is unavoidable

Enjoying coffee is a feast for the senses: that scent of freshly ground beans. The development of the taste on the tongue after the first sip. The delicious aromas are only made possible by the roasting of the coffee beans, more precisely: the so-called Maillard reaction. Amino acids and sugars are converted into new chemical compounds under the influence of heat. They determine the color and aroma of the roasted coffee beans. However, the process also produces acrylamide; a substance that is considered potentially hazardous to health.

If you’re wondering whether you have to do without your beloved coffee now, we can reassure you: no, you don’t have to. Because even if coffee cannot be completely acrylamide-free, the substance is only contained in very small quantities.

What is acrylamide?

Acrylamide is always formed when we bake, roast, fry or roast something, for example when making French fries, crisps, biscuits or crispbread. It is formed from a reaction between sugar and the protein building block asparagine at temperatures of 120 degrees Celsius. Above 180 degrees Celsius, the formation of acrylamide in food increases dramatically. In contrast to roasting and frying, according to the current state of research, little or no acrylamide is produced during cooking and steaming.

In animal experiments, the substance proved to be carcinogenic and mutagenic. However, there is still no reliable knowledge about the effect on humans. Irrespective of this, minimizing exposure to acrylamide is considered preventative health protection.

Enjoying roasted coffee is harmless with regard to acrylamid

According to a spokesman for the Federal Institute for Risk Assessment (BfR), drinking several cups of coffee a day is “not a concern”. And apart from the notorious acrylamide, coffee also has a lot of properties that make it a healthy drink in many ways.

To be on the safe side and to protect consumers preventively, the EU set stricter production guidelines and new limit values ​​for acrylamide in food as early as 2018. These are the current EU limits for acrylamide in coffee:

Roasted coffee: 400 micrograms per kilogram

Instant coffee: 850 micrograms/kg

Substitute coffee made from grain: 500 micrograms/kg

Substitute coffee made from chicory: 4000 micrograms/kg

These values ​​are regularly checked by the EU and adjusted if necessary.

Also good to know: The guide value for roasted coffee only applies to roasted beans. The acrylamide content of the extract brewed from it, which we drink, is, therefore, to be classified as significantly lower.

Which coffee is low in acrylamide?

You may be wondering if there is any coffee that is completely free of acrylamide. The answer is: no. Due to the roasting process, all roasted coffee always contains acrylamide, and the substance can also be found in organic coffee. Instant coffee and coffee substitutes such as grain coffee contain even more acrylamide than conventional coffee beans because they are processed in a complex manner.

However, there are ways in which coffee manufacturers can influence the formation of acrylamide during roasting. The secret is: long-term roasting at relatively low temperatures.

Long-term roasting not only has the advantage that less acrylamide is produced than when the coffee beans are roasted at high heat and only briefly. It also brings the following benefits:

The aromas in the coffee are more diverse and finer than with a quick, very hot roast.

Unwanted acids can evaporate particularly well.

Accordingly, the coffee is very digestible.

Apart from that, according to a study by the University of Porto, dark roasts have particularly little acrylamide, which is typical for Italian espresso, for example. And the type of bean also plays a role: roasted Arabica beans generally contain less of the substance than Robusta beans.