The toxic substance of potato is longanin (Solanen), also known as potatoin, is a toxic glycoside alkaloid. This alkaloid is not a single component, mainly to the auramine (Solanidine) for the glycosidic ligand composition of the auramine (Sola-nine) and Cajun alkaloids (Chaconine) two *** count six different glycosidic alkaloids.

Longumine

Longumine (Nightshade) Longumine, also known as Sola-nine, Longum toxin, and Potato toxin, is a weakly alkaline glycoside composed of glucose residues and chaconine. The molecular formula is C45H73NO15N and the structural formula is shown in the figure. Insoluble in water, ether, chloroform, soluble in ethanol, and dilute acid **** heat to generate auriculidine (C27H43NO) and some sugars.