Use of salt as a preservative. See also Fig 6.4 Extreme halophiles require moderate to large amounts of salt. All eventually have to get to glucose for glycolysis, etc. Some are very fastidious and require all 20 amino acids Sulfur and phosphorus also needed for proteins and nucleic acids. Usually obtained from inorganic salts.
Human pathogens require a variety of vitamins - usually obtained from the host organism.
Those with fewer enzyme systems require more nutrients. Organism that have very simple nutritional requirements have very complex enzyme systems. Count may actually drop due to transplant shock, trauma of transfer. Organisms must adapt to new media, perhaps induce new enzymes. Cells increase in size, incorporate various substances from medium.