Oil composition and characterisation of phenolic compounds of Opuntia ficus-indica seeds

► The oils of the Opuntia ficus-indica seeds presented high level of unsaturated fatty acids. ► Three isomers of feruloyl-sucrose and a putative sinapoyl-diglycoside were identified. ► The defatted seed wastes still contain components constituting a source for natural foods. ► Seeds of the orange variety are significantly better sources of these bioactive molecules.