Experimental results of
Daikin Streamer technology Demonstration suppression of causative substances of dog and cat allergies

Experiment Result

Independent testing by the third-party organization Biostir Inc. has demonstrated that the Streamer technology has an effect in suppressing Fel d1, the main allergen causing cat allergies, and Can f1, the main allergen causing dog allergies.

As a result of the experiment, the concentration of Fel d1, the main cause of cat allergies, was reduced to about 0.07% by irradiating Streamer for 8 hours. Compared to the case where Fel d1 naturally attenuates, it was confirmed that there is an inhibitory effect of more than 99.9%.

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Concentration of naturally attenuated Fel d1 as 100%

On the other hand, Can f1, the substance that causes dog allergies, was reduced to about 0.06% by irradiating Streamer for 8 hours. When compared to the concentration at which Can f1 naturally attenuates, it has been confirmed that there is an inhibitory effect of over 99.9%.

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Concentration of naturally attenuated Can f1 as 100%

Testing organization

Biostir Inc.

Test method

Fel d1, a crude extract of cat fur and epithelium, and Can f1, a crude extract of dog fur and epithelium, were applied to paper filters at a fixed concentration. Each allergen-coated sample was measured using the ELISA method (a method that detects and quantifies the strength of allergen binding to antibodies using an enzyme reaction) in both untreated (natural decay) and streamer-irradiated states. The test was conducted three times, 8 and 16 hours after the starting point, to determine the rate of sample inactivation (the loss of the ability to cause allergies).

What are Fel d1 and Can f1, the allergens used in this experiment?

Allergies to dogs and cats are caused by allergens contained in body surfaces and saliva. Cats and dogs have multiple allergens, but in this experiment, Fel d1 was used as the allergen for cats and Can f1 was used as the allergen for dogs.

There are currently eight types of cat allergen reported, from Fel d1 to Fel d8. Fel d1 is mainly produced by the sebaceous glands of cats, and is found in large quantities around the base of the tail, face, neck and armpits. More than 90% of cat allergy sufferers experience allergic symptoms to Fel d1, and it is said to be the allergen most likely to cause cat allergies.

There are also multiple reports of dog allergens, from Can f1 to Can f8. Can f1, which was used in the experiment this time, is a substance found in dog salivary glands and dander, and is an allergen that is highly likely to cause allergic symptoms in over 90% of dog allergy sufferers.

(Reference: The Japanese Society of Clinical Ecology, Environmental Allergy Subcommittee (2023). Sumai no Allergy Taisaku [Allergy countermeasures for housing])