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see decay of organic matterdecay of organic matter
or putrefaction,
process whereby heterotrophic organisms, including some bacteria, fungi, saprophytic plants, and lower animals, utilize the remains of once-living tissue as a source of nutrition.
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(1,4-tetramethylenediamine), NH2(CH2)4NH2, one of the biogenic amines. Putrescine is a crystalline substance, with a melting point of 27°-28°C. It was first discovered in the products of the putrefactive decomposition of proteins. It is formed during the bacterial decarboxylation of the amino acid ornithine. In organic tissue, putrescine serves as the source compound for the synthesis of the physiologically active poly-amines spermidine and spermine. These substances, together with putrescine, cadaverine, and other diamines, are constituents of ribosomes and help support the ribosome structure.

References in periodicals archive ?
Figure 2 shows the weight of unmodified membrane and membrane modified with 1,4-diaminobutane monomer.
Effect of 1,4-Diaminobutane Concentrations on the Performance of Membrane Chromatography:
The PSAO was very selective towards 1,4-diaminobutane (putrescine) and 1,5-diaminopentane (cadaverine) and the reaction signal could be perfectly registered with an oxygen sensor.
04 wt% MA, all modified with 1,4-diaminobutane (containing two highly reactive primary amine groups), an increased gel content with increased MA content was obtained.
330 mole) of 1,4-diaminobutane (DAB) was dissolved in 1.
The polyimides were synthesized in a two-step process from 3,3[prime],4,4[prime]-benzophenonetetracarboxylic di-anhydride (BTDA) and 1,4-diaminobutane (DAB).