There are two types of mustard plant with defined allergens, Oriental Mustard and Yellow Mustard.
Oriental mustard only contains one allergen, Bra j 1, which is a 2S seed storage protein commonly found in nuts and seeds.
Yellow mustard has 4 food allergens.
Sin a 1 is also a 2S seed storage protein and Sin a 2 is an 11S seed storage protein.
Sin a 3 is a lipid transfer protein (LTP) and Sin a 4 is a profilin protein.
Yellow mustard allergy can be linked to LTP Syndrome, where similarly shaped proteins in other plants resemble those in mustard and elicit an allergic reaction.
Other food containing 2S albumin seed storage proteins are cashews, peanuts, brazil nuts, turnips, rapeseed, pecans, chickpeas, hazelnuts, pistachio, buckwheat, soya, sunflower seeds, walnuts, kiwi, castor beans and sesame seeds.
Other food containing 11S proteins (not already mentioned above) are pumpkins, walnuts and almonds.
If sensitised to Lipid Transfer Proteins you may also have allergic reactions to almonds, hazelnuts, cabbage, walnuts, apples, dried fruit, lettuce and tomatoes.
Anaphylaxis Campaign - Mustard Allergy: The Facts
Allergy information for: Mustard (Brassica nigra, Brassica juncea, Brassica hirta, Sinapis alba)
Types of Mustard - Spread the Mustard
Food Allergy Canada - Mustard Allergy
Lipid Transfer Proteins (LTP Syndrome)
Allergy to LTP: to eat or not to eat sensitizing foods? A follow-up study, 2018
2S Albumin Storage Proteins: What Makes them Food Allergens?, 2008
Mustard allergy in children, 2008
Clinical characteristics of patients with mustard hypersensitivity, 2002
Allergy to Mustard Seeds: The Importance of 2S Albumins as Food Allergens, 2001
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