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Carbon dioxide is a major product of the oxidation of carbohydrates during cell metabolism. In essence, the oxidation of substrates, such as carbohydrates to CO2 and H2O, is the basis for aerobic forms of life. As such, carbon dioxide is a key component in life processes. Carbon dioxide is not only a product, but also necessary for the growth of many microorganisms. The depletion of the TCA...
The deacylation of Pen G was carried out by using recombinant E. coli in an aqueous two-phase system consisting of polyethylene glycol and potassium phosphate solution, which partitions the cells to the bottom phase and the products to the top phase. Bioconversion and product separation were carried out in the same reactor. Repeated batch conversion was employed ten times and enzymic activity showed...
The objective of this paper is to determine oxygen diffusion coefficients, permeabilities, and solubilities in a commonly used o/w topical ointment (similar to USP XXI hydrophilic ointment) and four commercial 1% anthralin creams. A new method developed by Ju and Ho in 1986 by applying a coupled steady-state and unsteady-state analysis for oxygen diffusion through a thin layer of test material on...
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