The quantification of cadaverine was conducted by high performance liquid chromatography (HPLC) using a 1260 system (Agilent Co., Ltd, CA, USA) with an Agilent Eclipse XDB‐C18 column (4.6 mm × 150 mm × 5 μm). For liquid chromatography‐mass spectrometry (LC‐MS) identification of cadaverine, exact mass spectra were explored with a Bruker micrOTOF‐Q II mass spectrometer using the time of flight (TOF) technique, equipped with an ESI source operating in negative mode (Burker Co., Ltd, USA). The product was verified by LC–MS.
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