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. 2015 Nov 6;3(4):839–850. doi: 10.3390/microorganisms3040839

Figure 2.

Figure 2

Formation of biogenic amines by 1. Enzymatic decarboxylation of amino acids, 2. Reductive amination of aldehydes and ketones, 3. Transamination reactions between aldehydes and amino acids and 4. Hydrolytic degradation of organic nitrogen compounds (e.g., phospholipids).