The entire potato plant contains glycoalkaloids, but the highest concentration is found in the leaves, flowers, "eyes," green skin, and sprouts. The lowest concentration is found in the white body of the potato. Toxicity is increased by physical injury to the plant, low storage temperature, and storage in bright light.
Are the tops of potatoes poisonous?
Potatoes have two harmful glycoalkaloids – solanine and chaconine (source). Many other members of the family, including tomatoes, have solanine in their leaves and stems. Humans and all livestock animals are susceptible to solanine poisoning. Luckily, animals are typically smart enough to avoid eating potato plants!
Are all parts of the potato plant edible?
The potato is a great food producer and easy to grow. Unlike some other vegetable plants, however, the only edible part a potato produces is the tuber. Potato leaves can be toxic and even some other parts of the plant can cause problems given the right conditions.
Are potatoes slightly poisonous?
Solanine is considered a neurotoxin, and ingestion by humans can cause nausea and headaches and can lead to serious neurological problems and even death if enough is consumed. A recent study suggested that a 16-oz (450-gram) fully green potato is enough to make a small adult ill.
Do potatoes have poison in their stems and leaves?
Solanine is a glycoalkaloid poison found in species of the nightshade family within the genus Solanum, such as the potato (Solanum tuberosum), the tomato (Solanum lycopersicum), and the eggplant (Solanum melongena). It can occur naturally in any part of the plant, including the leaves, fruit, and tubers.
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