The effect of temperature and radiation on flavonol aglycones and flavonol glycosides of kale (Brassica oleracea var. sabellica)

► Temperature and radiation influence flavonol glycosides in kale structure-dependent. ► Establishment of compound-climate relationship for flavonol aglycones and glycosides for the first time. ► Low temperature induce antioxidant relevant quercetin glycosides.