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Almonds are popular in the kitchen and cosmetics and new products are constantly coming onto the market: almond milk, almond flour, almond cream, even almond-based vegan cheese is in the refrigerated section. Are such products really healthy and sustainable or just hip and delicious?

We clarify where the almonds come from in the trade, what varieties there are, what almond oil, almond milk and almond butter are all about – and how sustainable almond production is.

Where do the almonds come from?

Almond trees probably originally come from Southwest Asia, but this cannot really be clarified today, as it is not always clear whether the occurrence is wild or caused by planting. Today, wild almond trees grow particularly on the eastern Mediterranean coast, in Turkey, the Caucasus, Iran, Iraq, Turkmenistan, Kyrgyzstan and Uzbekistan. There are also almond trees in Germany – but not wild.

In the Vorderpfalz and on the southern wine route, the climatic conditions are suitable for almonds, so that almonds were grown there until the 1940s. To this day, the almond trees bloom in many places in the spring in a sweet pink. Globally, most almonds are now grown in the US, but about 10 percent of global almond cultivation takes place in the EU, mainly in the Mediterranean region.

Are there different types of almonds?

There are basically three groups of tonsils:
sweet almonds used in baking and desserts,
Cracked almonds for raw consumption in nut mixtures to crack and
Bitter almonds, which are used in small amounts to flavor liqueurs (Amaretto), for example. Due to their high content of hydrocyanic acid, among other things, bitter almonds are not suitable for consumption. During the production of the baking ingredient bitter almond oil, the hydrocyanic acid is extracted from the oil.

Products made from almonds: almond oil, almond milk, almond butter

Almonds are extremely versatile and can be used in both sweet and savory dishes or as almond oil in cosmetics. Very classic products based on almonds are:
Marzipan: Strictly speaking, only almonds, sugar and maybe some rose or orange blossom water belong in marzipan. The more almonds in the marzipan, the higher the quality.
Almond milk: To make it, almonds are ground into a very fine paste and mixed with water. When straining, you get almond milk, which can be used as food or cosmetics.
Almond oil is pressed from sweet almonds and bitter almonds, depending on the purpose. Almond oil is particularly suitable for sensitive and dry skin and for babies, but it also tastes delicious in desserts and flavored as bitter almond oil in pastries and liqueurs.
Almond flour is a by-product of almond oil production. This is the so-called press cake, which is usually offered de-oiled as almond flour. Oil-free almond flour is gluten-free and contains only a few carbohydrates, which is why it is suitable for celiac patients and as part of a low-carb diet.
Almond butter consists of finely ground almonds without any additives. Dark almond butter is made from unpeeled roasted almonds, white almond butter is made from peeled “blanched” almonds. Dark almond butter has a strong flavor and is good for baking, light almond butter can replace cream and is a wonderful base or addition to desserts or smoothies.

How healthy are almonds?

Half of the almond is fat, which doesn’t exactly make it body-friendly. Although the fat it contains has the same calorie density as any other vegetable fat, it is much healthier. This is due to the content of unsaturated fatty acids and good omega-3 to omega-6 fatty acid ratio. These healthy fatty acids have beneficial effects on the cardiovascular system and cholesterol levels.

Furthermore, almonds contain about 20 percent protein, which is why almond butter and almonds are often used as a valuable source of protein in meatless cuisine.

The approximately 22 percent carbohydrates in almonds keep you full for a long time and, as a gluten-free alternative, are the basis of almond flour.

If the shell is still attached to the almond or if the ground almonds have not been blanched, almonds also contain a lot of dietary fiber, which not only prevents colon cancer, but also keeps you full for a long time because they only allow the blood sugar level to rise slowly.

The information on the nutritional values ​​of products made from almonds cannot always be made in general. For example, it is impossible to give general information about fat content, protein and calorie content for almond milk, since it always depends on how much water was used in the recipe to produce it or whether the milk was sweetened.

Almonds in themselves are very healthy in small amounts and are a valuable source of protein, but in larger amounts they contribute to an increased consumption of fat and then find themselves on the hips quite quickly. No wonder with around 700 kcal per 100 g! The rule of thumb is: A handful of nuts (approx. 25 g) per day is enough. By the way: The fact that almonds are a kind of “fat brake”, burn more fat than they deliver, or accelerate weight loss diets is pure nonsense.

Are Organic Almonds Better?

In principle, the use of pesticides is forbidden in organic farming – unlike with almonds from conventional cultivation. To combat pests, almonds are gassed with, among other things, phosphine, which is very toxic. Theoretically, little or no toxic phosphine should stick to the food after fumigation, but Öko-Test magazine found traces of it on nuts in September 2014.

Sulphurizing (a preservation method) is also forbidden in the organic sector, because this destroys vitamin B1 (thiamine), among other things, and the actually healthy almonds lose a vitamin. So it doesn’t just make sense to buy organic almonds in terms of pesticides.

Macadamia is one of the most expensive nuts in the world. But it is also particularly tasty and healthy. However, the macadamia is not sustainable: In order to get to us, it has to travel long distances.

Compared to other nuts, macadamia nuts have a unique taste: they are very mild, sweet and downright buttery. No wonder, because with 76 grams of fat per 100 grams, they are among the most fatty nuts.

The macadamia originally comes from the Australian rainforests and was already harvested by the Aborigines. In the 19th century, a German and an Australian botanist discovered the nut and named it after the scientist John Macadam. Macadamia trees are no longer only grown in Australia, but in many tropical and subtropical regions around the world. The cultivation areas include, for example, South Africa, Kenya, Hawaii, Brazil and New Zealand.

Macadamia bears the title “Queen of Nuts” because it is one of the most expensive nuts in the world. This is because the cultivation and further processing are complicated: the macadamia trees are demanding and only grow very slowly. In addition, macadamia nuts have a very hard shell that cannot be cracked with conventional nutcrackers. Therefore they are usually cracked with machines after they have been dried and are sold peeled.

Macadamia Nuts: What Makes Them So Healthy?

The macadamia is not only one of the most expensive, but also one of the healthiest nuts. The ingredients (per 100 grams) show why this is the case:

The 76 grams of fat are mostly mono and polyunsaturated fatty acids, which have a positive effect on LDL cholesterol levels and can thereby reduce the risk of cardiovascular disease. Above all, the proportion of monounsaturated fatty acids is very high at over 50 grams. According to a study, they should reduce insulin resistance in diabetic patients (PDF).
With around nine grams of fiber, macadamia nuts are one of the most high-fiber types of nuts.
Macadamia contains many vitamins and minerals. These include B vitamins, vitamin E and the minerals calcium, iron, magnesium, phosphorus, selenium and potassium. The selenium content in particular is relatively high. The trace element selenium is involved in many processes in our body, among other things it is very important for the thyroid gland.
Despite the many healthy ingredients, you should only eat macadamia nuts in moderation. With around 700 kilocalories per 100 grams, they are quite high in calories. However, a small handful of nuts is a healthy snack between meals.

It’s tiny, blue-green and comes from the sea – we’re talking about the microalgae Spirulina. It is heralded as the new miracle weapon in the fight against aging, lifestyle diseases and unhealthy lifestyles.

Rich in nutrients, the spirulina algae from the tropical and subtropical regions of the world are said to compensate for deficits and help with weight loss and muscle building.

Algae are actually only new as food in our latitudes, in the regions of origin the green organisms from the sea have been an integral part of the menu for centuries. Because spirulina algae are also very undemanding to thrive in salt and brackish water, they are also considered an opportunity in the fight against hunger. And the microalgae are also said to be good for the climate: during their growth, they convert carbon dioxide into oxygen through photosynthesis. An all-round positive balance, then? We did some research for you.

Up to 35 Spirulina Algae

Spirulina, or actually Arthrospira, belongs to the genus of cyanobacteria. Cyanobacteria, or blue-green algae in German, are tiny spiral-shaped bacteria. A single blue-green algae is only about 0.5 millimeters long and, in addition to the green chlorophyll, also contains blue color pigments, which gave the genus its name. There are up to 35 different types of spirulina algae, the best known and most common being Spirulina platensis and Spirulina maxima. However, it is disputed whether these are actually different species or simply local adaptations of a single algal species to local conditions.

Like all green plants, microalgae use chlorophyll a for photosynthesis to generate energy. One kilogram of algae can break down around 1.5 kilograms of carbon dioxide (CO2) and convert it into one kilogram of oxygen. This effect may have led to the formation of today’s earth’s atmosphere billions of years ago.

Spirulina: Occurrence and Cultivation

Spirulina algae love heat and direct sunlight. Because of this, they occur naturally in all tropical and subtropical regions. They are native to saline, alkaline shallow waters such as salt lakes, brackish water or shallow lagoons. There, millions of microalgae form an intense blue-green colored algae carpet. The tiny algae displace other microorganisms and are therefore relatively easy to harvest “sorted”.

Industrial production also takes advantage of this. Cultivation takes place in warm, shallow saltwater pools (water temperature up to 35° Celsius), also in otherwise infertile areas such as deserts or steppes. The direct sunlight and the CO2 introduced into the water ensure faster growth of the algae. The algae are produced in Asia (especially India), South America, Africa, Hawaii, California and now also in Europe, for example in Normandy (here, however, mostly for biogas production, not for consumption).

The ingredients: Is there really that much protein in spirulina algae?

The cyanobacteria, which have existed for billions of years, are true nutritional wonders. They contain around 60 percent protein and are therefore in the top class. The protein from the blue-green algae also contains all the essential amino acids. But the small algae is also very large when it comes to minerals and vitamins (the range of fluctuation results from the difference in the water of the cultivated algae): per 100 grams it contains 400-700 mg calcium, 400-480 mg magnesium, 50-100 mg iron, 100-300 mg selenium and 180 mg beta-carotene. In addition, the content of B vitamins (especially the important vitamin B12) and vitamin E is relatively high. In contrast to other seaweed, spirulina contains little iodine, which makes daily consumption safe.

Spirulina powder or Spirulina tablets?

Whether you choose powder or tablets is literally a matter of taste. The powder has gone through one less processing step and is therefore less likely to lose nutrients. However, it doesn’t taste particularly good, making it difficult to incorporate into your daily diet. It is best drunk as part of a green smoothie with fruit or vegetables, where the taste is masked. Spirulina tablets are compressed and are simply swallowed with some liquid. The taste is hardly disturbing, but valuable ingredients can be lost through the pressing.

Similar, but different: Spirulina and Chlorella

At first glance, spirulina and chlorella look pretty similar. Both are green microalgae. But while spirulina is a multicellular, spiral-shaped bacterium, chlorella is a unicellular organism with an indigestible cell membrane. Harvesting and processing chlorella is therefore much more complex, which is also reflected in the higher price.

Both microalgae are very nutritious, but the blue-green spirulina comes out on top in comparison. However, chlorella has a decisive advantage: Because the single-celled organism is more difficult to cultivate, contamination with other algae is rather unlikely. In the case of spirulina, on the other hand, cases of products contaminated by toxic blue-green algae are known.

Spirulina algae and sustainability?

This is different again in the famine areas of this world. The nutrient-rich algae, which can also be cultivated in otherwise rather infertile areas, helps to compensate for malnutrition. With the high proportion of proteins, beta-carotene and iron, it combats precisely those deficits which, according to the WHO, are particularly problematic in famine areas. And without consuming precious, clean fresh water, it thrives best in salt water. This gives the spirulina algae a lot of plus points from a sustainability point of view.

The strong conversion of carbon dioxide into oxygen, which the microalgae cause during their growth, provides further plus points. However, if you include the transport from the countries of origin to Europe, the ecological balance is no longer so impressive. So, the sustainability of spirulina is strongly related to where it is consumed.