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Macadamia allergy is a type of food allergy to macadamia nuts which is relatively rare, affecting less than 5% of people with tree nut allergy in the United States. [25] Macadamia allergy can cause mild to severe allergic reactions, such as oral allergy syndrome , urticaria , angioedema , vomiting, abdominal pain, asthma , and anaphylaxis . [ 26 ]
In 1792, William Bartram reported in his botanical book, Travels, a nut tree, Juglans exalata that some botanists today argue was the American pecan tree. Still, others argue hickory, Carya ovata. Pecan trees are native to the United States, and writing about the pecan tree goes back to the nation's founders.
A nut is a fruit consisting of a hard or tough nutshell protecting a kernel which is usually edible. In general usage and in a culinary sense, many dry seeds are called nuts, but in a botanical context, "nut" implies that the shell does not open to release the seed ( indehiscent ).
A small bowl of mixed nuts An assortment of mixed nuts A culinary nut is a dry, edible fruit or seed that usually, but not always, has a high fat content. Nuts are used in a wide variety of edible roles, including in baking, as snacks (either roasted or raw), and as flavoring. In addition to botanical nuts, fruits and seeds that have a similar appearance and culinary role are considered to be ...
By then, the trees are 40 to 50 feet tall and will continue to turn out Macadamia nuts for 100 years or more. A hard shell houses a single sphere-shaped nut divided into two halves.
A tree nut allergy is a hypersensitivity to dietary substances from tree nuts and edible tree seeds causing an overreaction of the immune system which may lead to severe physical symptoms. Tree nuts include almonds , Brazil nuts , cashews , chestnuts , filberts/hazelnuts , macadamia nuts , pecans , pistachios , [ 1 ] shea nuts and walnuts .
The nuts are edible [15] with an excellent flavor. They are unsuitable for commercial or orchard production due to the long time it takes for a tree to produce sizable crops and unpredictable output from year to year. The nuts can be used as a substitute for the pecan [15] in colder climates
More recent breeds, such as the dwarf cashew trees, are up to 6 m (20 ft) tall and start producing after the first year, with economic yields after three years. The cashew nut yields for the traditional tree are about 0.25 t (0.25 long tons; 0.28 short tons) per hectare, in contrast to over a ton per hectare for the dwarf variety.
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