A metabolically engineered strain of Escherichia coli that produces putrescine at high concentrations in glucose mineral salts medium has been described.

[12][11] It has been found that MAO-B, via the putrescine pathway, importantly mediates GABA synthesis in astrocytes in various brain areas, including in the hippocampus, cerebellum, striatum, cerebral cortex, and substantia nigra pars compacta (SNpc).

Putrescine serves an important role in a multitude of ways, which include: a cation substitute, an osmolyte, or a transport protein.

That same study found that putrescine added as a fertilizer showed the same results as if it was inoculated with the fungus, which was also shown in Arabidopsis and barley.

Putrescine reacts with adipic acid to yield the polyamide nylon 46, which is marketed by Envalior (formerly DSM) under the trade name Stanyl.

[22] Due to its role in putrification, putrescine has also been proposed as a biochemical marker for determining how long a corpse has been decomposing.

Fresh strawberries coated have lower decay percentage, higher tissue firmness, contents of total soluble solids.

Nanoparticles of putrescine with chitosan are effective in preserving the nutritional quality and prolonging the post-harvest life of strawberries during storage up to 12 days.