Noun
A poisonous alkaloid glucoside extracted from the berries of common nightshade (Solanum nigrum), and of bittersweet, and from potato sprouts, as a white crystalline substance having an acrid, burning taste; -- called also solonia, and solanina.
Source: Webster's dictionaryHowever, when these commercial varieties turn green, they can still approach concentrations of solanine of 1000 mg/kg (1000 ppmw). Source: Internet
In normal potatoes, analysis has shown solanine levels may be as little as 3.5% of the breeders' maximum, with 7–187 mg/kg being found. Source: Internet
Like all parts of the plant except the tubers, the fruit contain the toxic alkaloid solanine and are therefore unsuitable for consumption. Source: Internet
Since exposure to light leads to greening of the skins and the development of solanine, growers are interested in covering such tubers. Source: Internet