It is a type of glycoalkaloid found in nightshade plants (They belong to the Solanaceae family). Among the plants mentioned are tomato, tobacco and potato among others.
Plural of solanine ("toxic found in Solanaceae plants").
solaninesbelonging to a glycoalkaloid found in tomatoes and tobacco, but the most ingested is potato. Peeling the potato or frying it (not cooking it) destroys it.