Identification and molecular interactions of novel ACE inhibitory peptides from rapeseed protein

•Various bioactive peptides were encrypted in rapeseed protein by in silico analysis.•Novel ACE inhibitory peptides FQW, FRW, CPF were identified from rapeseed protein.•The peptides were predicted to be non-toxic and not allergens.•The three peptides could interact with ACE active site, and coordinate with Zn2+.•Rapeseed protein could be an excellent source of ACE inhibitory peptides.