When the product pH is less than pH 4.1, due to. the addition of vinegar (acetic acid), and the dressings and. mayonnaise are held at room temperature for a few days, Salmonella spp. are inactivated (Smittle, 1977). Other organic. acids do not function as effectively as acetic acid.
These primate cities are often, but not always, the capital cities of a country. An excellent example of a primate city is Paris, which truly represents and serves as the focus of France.ome scholars define a primate city as one that is larger than the combined populations of the second and third ranked cities in a country. This definition does not represent true primacy, however, as the size of the first ranked city is not disproportionate to the second.
A 'primate city distribution' is a rank-size distribution that has one very large city with many much smaller cities and towns, and no intermediate-sized urban centres: a King effect, visible as an outlier on an otherwise linear graph, when the rest of the data fit a power law or stretched exponential function.he 'law of the primate city' was first proposed by the geographer Mark Jefferson in 1939. He defines a primate city as being at least twice as large as the next largest city and more than twice as significant..