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Grilling Season & Alpha-Gal Syndrome
Navigating mammalian meat allergies (Alpha-Gal syndrome) and mustard-sensitized marinades (Sin a 1) during the peak summer barbecue months.
Allergens
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Cucumber
Cucumber may trigger oral allergy syndrome (OAS) due to profilin and PR-10 proteins, causing itching/swelling in the mouth. Rarely, systemic reactions occur. Common in birch pollen-allergic individuals.
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Egg
Eggs contain ovomucoid, ovalbumin, and conalbumin proteins, which are common allergens. Reactions range from hives and digestive issues to anaphylaxis. Egg allergy is prevalent in children but often outgrown. Raw eggs may pose a higher risk due to unaltered proteins.
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Celery
Bouillon often contains celery or celery-derived compounds. Allergic reactions are triggered by Api g 1 and Api g 4 proteins, causing oral allergy syndrome, hives, or anaphylaxis in sensitive individuals. Common in European cuisines.
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Sulphites
Sulphites (E220–E228) are commonly used as preservatives in bouillon. Can trigger asthma, hives, or anaphylaxis in sensitive individuals, especially those with pre-existing asthma. Reactions are dose-dependent.
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Meat
Meat in bouillon may contain residual proteins (e.g., serum albumin, gamma-globulin) triggering allergic reactions, including urticaria or anaphylaxis. Rare but documented, especially in Alpha-Gal Syndrome (mammalian meat allergy).
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Mustard
Bouillon may include mustard or mustard flour as a flavoring. Allergy triggered by Sin a 1 protein. Symptoms: rhinitis, asthma, or anaphylaxis (rare). Common in Europe; cross-reacts with rapeseed, cabbage. Often hidden in spice blends.
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Milk
Milk proteins (casein, whey) in mozzarella trigger IgE-mediated reactions (urticaria, anaphylaxis). Common in children; some outgrow it. Lactose intolerance is separate (non-allergic).
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Rapeseed
Rapeseed oil (canola) is rarely allergenic but may trigger reactions in individuals sensitized to mustard or cruciferous plants (cross-reactivity). Symptoms include itching, swelling, or respiratory issues; typically mild and uncommon.
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Nuts
Tree nuts (e.g., almonds, hazelnuts, walnuts) are common allergens. Reactions range from mild (itching, hives) to severe (anaphylaxis). Often included in muesli; cross-contamination possible in processing.
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Wheat
Wheat (gluten/albumin/globulin proteins) triggers IgE-mediated or celiac reactions. Symptoms: digestive issues, skin rashes, or anaphylaxis. Common in cereal-based muesli; check for hidden sources.
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Tree nuts
Tree nuts (e.g., almonds, hazelnuts, walnuts) are common in muesli. Allergic reactions (IgE-mediated) can cause urticaria, angioedema, or anaphylaxis. Cross-contamination likely if processed in shared facilities.
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Iodine
Nori contains exceptionally high iodine (5100 µg/100g). Excessive intake may trigger allergic reactions (urticaria, angioedema) or thyroid dysfunction in sensitive individuals. Rare but severe cases reported.
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Oats
Oats may trigger reactions in individuals with *Avena sativa* sensitivity or, rarely, cross-reactivity to wheat/gluten. Symptoms include dermatitis or GI distress; often linked to contamination with gluten during processing. Not a top-14 EU allergen but noted for at-risk groups.
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Latex-Fruit Syndrome
Endive may trigger latex-fruit syndrome due to cross-reactivity with latex proteins (e.g., Hev b 6 homologs in chicory/endive). Symptoms include itching, swelling, or anaphylaxis in latex-sensitized individuals; prevalence is low but clinically relevant for at-risk groups.
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Fish
Atlantic salmon contains parvalbumin, a major fish allergen. Reactions range from mild urticaria to severe anaphylaxis; common in fish-allergic individuals. Raw fish may pose higher risk due to intact proteins.
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Grape
Grape seeds (Vitis vinifera) may trigger allergic reactions, primarily via lipid transfer proteins (LTPs) or, rarely, cross-reactivity with latex-fruit syndrome. Symptoms range from mild oral itching to severe anaphylaxis; uncommon but documented in sensitive individuals.
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Peas
Peas (legumes) can trigger IgE-mediated allergy, primarily in children, with symptoms like urticaria, oral itching, or anaphylaxis. Cross-reactivity with other legumes (e.g., lentils, soy) is possible but rare. More common in raw or undercooked forms; canned processing may reduce allergenicity.
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Saponins
Quinoa contains saponins (natural glycosides), which can cause mild allergic-like reactions (e.g., itching, digestive discomfort) in sensitive individuals. Not a true IgE-mediated allergy but may mimic symptoms. Typically removed by rinsing before cooking.
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Quinoa
Quinoa (Chenopodium quinoa) may trigger IgE-mediated allergy, primarily via seed storage proteins (e.g., 11S globulins). Symptoms include urticaria, asthma, or anaphylaxis; rare but documented. Cross-reactivity with amaranth or goosefoot family plants possible.
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Mushroom
Mushrooms can trigger IgE-mediated allergies via proteins like thaumatin-like proteins (TLPs) or chitinases. Reactions range from oral allergy syndrome (OAS) to anaphylaxis; cross-reactivity with molds or latex-fruit syndrome possible. Relatively rare but documented in sensitive individuals.
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Peanuts
Crushed peanuts (common topping/garnish) contain Ara h 1/2/3. Severe allergic reactions (anaphylaxis) are well-documented; frequent in Indonesian cuisine. Cross-contamination likely.
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Peach
Nectarines (a peach variant) contain **Pru p 1, Pru p 3, Pru p 4** proteins, triggering **oral allergy syndrome (OAS)** or systemic reactions in sensitized individuals. Symptoms: itching, swelling, or anaphylaxis (rare). Linked to birch pollen allergy (cross-reactivity).
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Rosaceae fruits
As a **Rosaceae family fruit**, nectarines may cause allergic reactions due to shared allergens (e.g., **Pru p 1, Bet v 1 homologs**). Symptoms range from mild OAS to severe anaphylaxis, especially in individuals with pollen-food syndrome. Cross-reactivity with apples, cherries, or almonds possible.
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Birch Pollen-Related Oral Allergy Syndrome
Nectarines contain **PR-10 proteins** (e.g., **Pru p 1**) cross-reactive with birch pollen. Triggers **oral allergy syndrome** (OAS): itching/swelling of mouth/throat in pollen-allergic individuals; rarely systemic.
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Stone Fruit
Nectarines (stone fruit) may cause **IgE-mediated allergy** via **LTP proteins** (e.g., **Pru p 3**), especially in Mediterranean populations. Symptoms: urticaria, angioedema, or anaphylaxis (rare but severe).
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Onion
Onions (Allium cepa) contain thiols and profilin (All c 3), triggering oral allergy syndrome (OAS) or contact dermatitis, especially in birch pollen-allergic individuals. Rarely causes anaphylaxis. Cross-reacts with garlic, leeks, and mugwort pollen.
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Yeast
Baker’s yeast (*Saccharomyces cerevisiae*) rarely triggers IgE-mediated allergy (e.g., asthma, urticaria) in sensitized individuals. More common in occupational exposure (bakers, brewers). Cross-reactivity with molds possible.
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Mycoprotein
Mycoprotein (Fusarium venenatum-derived) may trigger allergic reactions in sensitive individuals, especially those with mold/fungal allergies. Symptoms range from mild (itching, hives) to severe (anaphylaxis). Rare but documented in case reports.
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Cannabis sativa (Hemp)
Hemp oil (from *Cannabis sativa* seeds) may trigger IgE-mediated allergy via seed proteins (e.g., edestin, albumin) or cross-react with birch pollen (OAS). Rare but reported: urticaria, angioedema, or anaphylaxis in sensitized individuals. Risk higher if unrefined.
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Cannabis
Hemp oil (from *Cannabis sativa*) may trigger IgE-mediated allergy via seed proteins (e.g., **Can s 3**), though rare. Cross-reactivity possible with **Latex-Fruit Syndrome** or **Birch Pollen-Related Oral Allergy Syndrome** in sensitized individuals. Reactions range from mild oral symptoms to anaphylaxis; more common in raw seed/protein exposure than refined oil.
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