Nonprotein nitrogenous substances in corn contribute to the flavor and nutritional quality of the processed grain in food products and feeds. Because their presence in dry-milled products is determined by their location in the kernel, the amounts of amino acids, quaternary nitrogen compounds, nucleosides, purines, and pyrimidines in germ, endosperm, and bran fractions were measured. These compounds were extracted with aqueous ethanol from the corn fractions, separated by ion-exchange chromatography, and quantitatively determined by specific spectrophotometric procedures. Amino acids, which contribute over 50% of the nonprotein nitrogen in whole corn or its fractions, are distributed almost equally between the endosperm and the smaller germ fraction, with minor amounts in the bran. The concentration of free amino acids in the germ is several times that in the endosperm. Only small differences exist between the types of amino acids found in
Australia has a distinctive population distribution characterised by a concentration in major metropolitan centres and coastal areas, with much of the continent being sparsely settled. This has been strongly shaped by historical, environmental and economic processes, but it is likely that climate change may have some influence in the future. The current generation of climate change models have limited spatial resolution, so it is difficult to be precise about the areas that will be most impacted by climate change. This paper investigates six major non-metropolitan regions that have been identified as areas likely to be most affected by climate change. While effects on coastal cities will be substantial, they are not considered in detail here. The six non-metropolitan 'hotspots', however, are each considered in turn and the potential health and population distribution effects discussed. It is argued that Australian discourse on climate change has not focused sufficiently on intranational variations in the potential effects of that change.
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