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Which potatoes contain solanine?

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The Irish, or common, potato (Solanum tuberosum) is among the solanaceous plants known to contain solanine or other toxic alkaloids. In the normal potato tuber, the alkaloids are present in nontoxic amounts; however, in green or stressed potato tubers, the levels may be toxic.


Do all potatoes contain solanine?

Solanine is naturally present in all potatoes, generally in the upper one-eighth of the skin. It is a colorless alkaloid with a bitter taste. Usually, a person will not keep eating a bitter potato because of the taste. However, if they were to eat a large amount of green potato they might get solanine poisoning.

How do I know if my potatoes have solanine?

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.

Which potatoes contain the most solanine?

Green potatoes usually have elevated levels of solanine and should not be eaten in large quantities.

Does cooking potatoes remove solanine?

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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