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  • Title: [Effect of various sources of nitrogen and carbon on the biosynthesis of proteolytic enzymes in a culture of Aspergillus awamori 21/96].
    Author: Blieva RK, Safuani ZhE, Iskakbaeva ZhA.
    Journal: Prikl Biokhim Mikrobiol; 2003; 39(2):213-6. PubMed ID: 12722657.
    Abstract:
    Effects of various conditions of nitrogen and carbon nutrition on the biosynthesis of proteolytic enzymes in a selected culture of Aspergillus awamori 21/96 were studied. This strain was shown to produce proteolytic enzymes constitutively. In the presence of mineral sources of nitrogen, the synthesis of the enzymes under study was not induced by proteinaceous substrates. Optimum conditions of the enzyme biosynthesis were achieved with casein as a source of nitrogen and starch or dulcitol as a source of carbon (which increased the production of the enzymes 1.7 and 8 times, respectively). When the cells were grown on starch, their specific activity exceeded control levels 18 times.
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