Scientific Opinion on the substantiation of health claims related to
Corylus avellana L. and maintenance of skin (ID 2749) pursuant to Article
13(1) of Regulation (EC) No 1924/2006[sup]1[/sup]
EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA)2
European Food Safety Authority (EFSA), Parma, Italy
Słowa kluczowe:
Corylus avellana L
1. Charakterystyka żywności / składnika
-
Utrzymanie prawidłowego stanu skóry
The food constituent that is the subject of the health claim is Corylus avellana L.. The characterisation of Corylus avellana L. is performed by comparing data provided as conditions of use to information extracted from standard reference textbooks (see Table 2 below and Appendix C for list of standard reference textbooks used for the characterisation).
Table 2. Information on Corylus avellana L. from standard reference textbooks and the information provided as conditions of use.
ID Scientific name Part used
Nature of the
preparation Conditions of use
Text-
book
Corylus avellana L.
Betulaceae
Fruit;
leaf;
bark
Fruit: oil
Leaf: fluid
extract;
infusion
Bark:
tincture;
decoction
Fruit and fruit oil: common food.
Leaf:
Fluid extract: (1:1): 60-80 drops/day.
Infusion: 25 g in 1 L of water/day.
Bark:
Tincture: 1:10, EtOH 65%, 3 times 30
drops/day.
Decoction: 25 g in 1 L of water/day
2749 Huile de noisettes : Hazel nut (Corylus
avellana) oil
Fruit
(Hazel
nut)
Oil Oil: 315 mg/day
The Panel considers that the food constituent, Corylus avellana L., which is the subject of the health claim has been sufficiently characterised with the following conditions of use: oil: 315 mg/day.
2. Znaczenie oświadczenia dla zdrowia człowieka
-
Utrzymanie prawidłowego stanu skóry
The claimed effect is “skin care”. The Panel assumes that the target population is the general population.
The Panel considers that maintenance of normal skin is beneficial to human health.
3. Naukowe uzasadnienia wpływu na zdrowie człowieka - Utrzymanie prawidłowego stanu skóry
-
Utrzymanie prawidłowego stanu skóry
Five references were cited to substantiate the claimed effect. One reference was an in vitro study investigating sphingolipid metabolism during keratinocyte differentiation. Four references were animal studies: two examined the effect of linoleic acid either alone or in combination with other fatty acids on the permeability barrier function in rats and mice respectively, one investigated the effects of conjugated linoleic acid, gamma-linolenic acid, linoleic acid and its combination on the skin composition in mice and one was studying the effect of essential acid deficiency on the epidermal sphingolipids of rats.
Even though hazel nut oil contains linoleic acid, the references cited did not address the relationship between the consumption of hazel nut oil from fruits of Corylus avellana L. under the proposed conditions of use. The Panel notes that these references did not provide any scientific data that could be used to substantiate the claimed effect.
The Panel concludes that a cause and effect relationship has not been established between the consumption of Corylus avellana L. and maintenance of normal skin.
Wnioski
On the basis of the data presented, the Panel concludes that:
The food constituent, Corylus avellana L., which is the subject of the health claim, has been sufficiently characterised with the following conditions of use: oil: 315 mg/day.
The claimed effect is “skin care”. The target population is assumed to be the general population. Maintenance of normal skin is beneficial to human health.
A cause and effect relationship has not been established between the consumption of Corylus avellana L. and maintenance of normal skin.
