The terms “filbert” and “hazelnut” are often used interchangeably for nuts from all plants in the genus Corylus, such as C. silvestris, C. maxima and C. colurna. These wild nuts grow in clusters on the hazel tree in temperate zones around the world and is particularly common in Europe. Italy, Spain, France and Turkey lead in hazelnut production. The nuts generally fall in autumn and are harvested from the ground and then shelled and dried.

Allergon processes the dried hazelnuts by grinding, defatting and freeze-drying.



Alternaria alternata is one of the main mold allergens. In temperate climates, airborne Alternaria spores are detectable from May to November with peaks in late summer and autumn.

Allergon produces Alternaria alternata towards forecasts and orders.

Alternaria alternata

Scientific name: Alternaria alternata (Syn: Alternaria tenuis)

Culture No: CBS 103.33


The most important House dust mites are Dermatophagoides pteronyssinus and D. farinae. In subtropical and tropical regions the Storage mite Blomia tropicalis is also a major source of allergens, co-existing with D. pteronyssinus.

D. pteronyssinus, though it has a worldwide distribution, seems to be more abundant in Europe than in America. It prefers more humid climates than D. farinae does.

Allergon cultivates these mites with a purity of at least 95% and the remaining part consisting of cultivation media.

Dermatophagoides pteronyssinus

Scientific name: Dermatophagoides pteronyssinus

Common name: House dust mite

Family: Pyroglyphidae

Source material: Purified mite



Sensitization to Cat is strongly associated with asthma, especially in environments free of Mite and Cockroach. The presence of domestic pets increases the prevalence of respiratory symptoms in asthmatic children and children sensitized to Cat allergen are more likely to develop a more severe asthma than children with negative tests to Cat (3).

Cat-allergic patients with IgE antibodies to Fel d 1 have been shown also to react to the corresponding protein of ocelot, puma, serval, Siberian tiger, lion, jaguar, and snow leopard.

Cat hair comes from approved suppliers in Sweden and the product is treated with acetone.

Felis domesticus

Scientific name: Felis domesticus

Common name: Cat, domestic

Family: Felidae


Kali soda originated in Europe and Asia and have become naturalized and common throughout most arid and semiarid regions of the world, including central and western regions of Canada and the United States. It is commonly found on the coasts of Europe, North Africa, Asia and North America and Australia.

Kali soda is a rounded, erect annual, intricately branched, growing from 0.3 to 1 m in height and from 0.3 to 1.7 m in diameter.

Allergon has a collection built up in California, USA and blooming is in August.

Kali soda

Scientific name: Kali soda (Syn. Salsola kali)

Common name: Russian thistle

Family: Amaranthaceae



Lolium perenne is native to Europe but has been introduced on all continents with temperate zones, and many islands. It was the first meadow grass cultivated in Europe, and is considered the most important forage grass there. It is a short-lived perennial, biennial or annual bunchgrass growing to as much as 1.5 m tall at a fast rate, and with a deeply fibrous root system.

Lolium perenne blooms in June – July and is collected in the area and land around the Allergon site. It is important to know that the seeds are sown in August the year before harvest.

Lolium perenne

Scientific name: Lolium perenne (Syn. Lolium boucheanum)

Common name: Perennial rye grass

Family: Poaceae


Phleum pratense is native to Europe, North Africa and northern Asia, and has been introduced and widely cultivated as a hay and pasture grass in North and South America, South Africa and Australia. It is one of the world's most common grasses and one of the most common sources of animal fodder. It grows best in cooler, humid climates.
It grows to 1 m tall. It is a clump-forming, rather short-lived perennial with characteristic long, cylindrical, spikelike, somewhat purplish to silvery flower heads on wiry stems.

Phleum pratense flowers in June – July and we collect this species in the area and land around the Allergon site. The sowing of seeds take place in August the year before harvest.

Phleum pratense

Scientific name: Phleum pratense (Syn. Phleum nodosum)

Common name: Timothy grass

Family: Poaceae


Olea europaea probably originated in Asia Minor, spread to the Mediterranean region, and was then introduced into North America (especially California and Arizona), South America (Chile), Australia and South Africa. Countries and regions have distinct varieties of Olive.

The Olive tree is an evergreen growing to 10 m, with a broad, round crown and a thick and knotty trunk.

Olea europaea blooms in May and is collected in California, USA.

Olea europaea

Scientific name: Olea europaea (Syn. Olea chrysophylla)

Common name: Euroepan olive 

Family: Oleaceae


Birches, Betula spp., are boreal and temperate trees and shrubs, with around 50 species worldwide. Betula pendula is native and common in most of Europe, northwest Africa and western Siberia, but absent in the southernmost parts of Europe. It is the most common tree found in Scandinavia and the Alps, and a potent pollen producer in those areas. White birch is a single-stemmed, deciduous tree up to about 25 meters tall. The bark is smooth and silvery white, but can become black and fissured into rectangular bosses.

Betula pendula blooms in April – May and is collected in parks and gardens i Sweden.

Betula pendula

Scientific name: Betula pendula (Syn. Betula verrucosa)

Common name: white birch

Family: Betulaceae


The Fagales order consists of trees from the Betulaceae family (Grey alder and Birch tree), along with Hazel, Hornbeam, Oak, and Chestnut tree. Grey alder is the most widely distributed Alder in Europe and western North America.

Grey alder is a rapidly growing, deciduous, multi-stemmed shrub or small tree, which tends to form thickets. The Alder typically grows between 2 and 5 m in height but may reach 12 m.

Alnus incana is collected in parks in Sweden.

Alnus incana

Scientific name: Alnus incana (Syn: Alnus rugosa)

Common name: Alder, speckled

Family: Betulaceae