Solanine is a glycoalkaloid poison created by various plants in the genus Solanum, such as the potato plant. When the plant's stem, tubers, or leaves are exposed to sunlight, it stimulates the biosynthesis of solanine and other glycoalkaloids as a defense mechanism so it is not eaten.
How do potatoes become poisonous?
Potatoes contain two kinds of glycoalkaloids, both natural toxins, called solanine and chaconine. Exposure to light greatly increases the formation of chlorophyll and glycoalkaloids. Chlorophyll is responsible for the green color of many plants and is not toxic.
How do you know if a potato is toxic?
Some signs that uncooked potatoes have spoiled include dark spots on the skin, a soft or mushy texture, and foul odor. Cooked potatoes may have mold but can also spoil without any noticeable signs.
Are potatoes toxic when they sprout?
Potatoes are safe to eat, even after they've sprouted, as long as they are still firm to the touch, don't look too wrinkly and shriveled, and the sprouts are small. There are, however, toxin concerns with potato sprouts, so you need to remove the sprouts and ensure that the potato isn't too far gone.
Are grown potatoes poisonous?
It sounds like a joke, or perhaps just an urban legend that grew out of Dr. Seuss's “Green Eggs and Ham.” But food scientists say this one is no myth. The reality is that green potatoes contain high levels of a toxin, solanine, which can cause nausea, headaches and neurological problems.
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