Catechin and epicatechin in testa and their association with bioactive compounds in kernels of cashew nut (Anacardium occidentale L.)

► The polyphenolic constituents in the testa of cashew nut samples were first time revealed. ► Bioactive compounds such as carotenoids, vitamins and fatty acids in cashew nut kernels were first time determined. ► Influence of a novel hand-cracking shelling process on the bioactive compounds of cashew nut samples was demonstrated. ► The association between phenolic compounds in the testa and bioactive compounds in kernels of cashew nut samples were explained. ► The contribution of testa to the nutritional quality of cashew nut kernels was proved.