Effects of harvest time and variety on sensory quality and chemical composition of Jerusalem artichoke (Helianthus tuberosus) tubers

► Three varieties of Jerusalem artichoke were investigated at three harvest times. ► Forty-one volatile compounds, mainly terpenes, were identified by GC-MS. ► Sensory evaluation showed significant variation between varieties and harvest times. ► The red-skinned variety Rema was separated from the white-skinned Mari and Draga.