Organonitrogen compounds identified in degraded wheat straw by oxidation in a sodium hypochlorite aqueous solution

► NaOCl is an effective oxidant for wheat straw degradation under mild conditions. ► Thirty-eight ONCs were identified in the extracts from the degraded wheat straw. ► Sequential extraction is a potential methodology for removing ONCs. ► CS2 is effective for enriching unsaturated ONCs from the degraded wheat straw.