Do yellow tomatoes contain solanine?
Online Answer
Tomatoes are member of the nightshade family (Solanaceae) and, as such, are related to eggplants, potatoes, and of course, deadly belladonna or nightshade. These cousins all produce a toxin called solanine. ... All parts of the plant contain solanine, but the heaviest concentrations tend to be in the leaves and stems.
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Solanine is not removed by boiling, but it can be destroyed by frying. Solanine poisoning is uncommon as cooks and the public are aware of the problem and tend to avoid green potatoes, in any case, consumption of up to 5 g of green potato per kg body weight per day does not appear to cause acute illness..
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The main problem with these vegetables are the alkaloids present in them — solanine, capsaicin and nicotine are the main ones. The last alkaloid nicotine found in fries (made from potato) and ketchup (made from tomatoes) raises valid questions, such as why we are so addicted to both of these and the combination.
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Solanine poisoning is primarily displayed by gastrointestinal and neurological disorders. Symptoms include nausea, diarrhea, vomiting, stomach cramps, burning of the throat, cardiac dysrhythmia, nightmares, headache, dizziness, itching, eczema, thyroid problems, and inflammation and pain in the joints..
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Most people can easily cope with the solanine in the average portion of potato and show no symptoms of poisoning because the body can break it down and rapidly and excrete the products in the urine. But if the level of solanine is as high as 40 mg per 100 g of potato, symptoms include diarrhea…even coma.
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But how do you know when solanine is present in a potato? The tuber is turning green. Though the green color that forms on the skin of a potato is actually chlorophyll, which isn't toxic at all (it's the plant's response to light exposure), the presence of chlorophyll indicates concentrations of solanine.
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