Effects of gamma and electron beam irradiations on the triacylglycerol profile of fresh and stored Castanea sativa Miller samples

► The most abundant triacylglycerols (TAGs) in chestnuts contained at least a linoleic acid unit. ► Storage time and irradiation treatment showed a significant combined effect. ► Effects of gamma-irradiation were slightly higher than those observed for the electron beam. ► The higher doses (1 and 3 kGy) exerted marked effects over triacylglycerol profiles. ► LDA highlighted TAG profiles as a potential indicator of irradiation treatment.