Glycoalkaloids are naturally occurring bitter-tasting compounds, principally solanine and chaconine, found in potato tubers, whose concentration increases with greening, physical damage and light exposure and represents a food-safety concern at elevated levels.
In trade practice
Sorting lines remove green, damaged and sprouted tubers because these carry the highest glycoalkaloid concentrations. Storage facilities are kept dark and temperature-stable to prevent greening during the holding period. Food safety management systems require suppliers to document variety selection, storage conditions and sorting procedures as part of their hazard analysis, since glycoalkaloid content is not routinely tested on every lot but is managed through process controls. Buyers sourcing potatoes for processing may request variety declarations, as some cultivars carry inherently lower baseline levels.
In a specification
Specifications for potato raw material typically require that greened, sprouted or mechanically damaged tubers are excluded, with the supplier confirming compliance through process records rather than per-lot analytical testing.