Biotreatment, Downstream Processing and Modelling by Thomas Scheper, P. Bajpai, P.K. Bajpai, D. Dochain, N.N.

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By Thomas Scheper, P. Bajpai, P.K. Bajpai, D. Dochain, N.N. Dutta, A.C. Ghosh, R.K. Mathur, A. Mukhopadhyay, M. Perrier, P.L. Rogers, H.S. Shin, B. Wang

This quantity bargains with such issues as realities and tendencies in enzymatic prebleaching of Kraft pulp, biotransformation for l-ephedrine creation, inclusion our bodies and purification of proteins in biologically energetic kinds, and extraction and purification of cephalosporin antibiotics.

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3 Biotransformation Using Y e a s t s - F r e e Cells . . . . . . . . . . . . . . . 1 Fed-Batch Process . . . . . . . . . . . . . . . . . . . . . 2 Continuous Process . . . . . . . . . . . . . . . . . . . . . 4 Biotransformation Using Y e a s t s - I m m o b i l i s e d Cells . . . . . . . . . . . . 5 Biotransformation Using Purified P D C Free Enzyme . . . . . . . .

Effluent toxicity remained essentially the same. In the same study, xylanase pretreatment of a hardwood kraft pulp under the same conditions led to a reduction of 35-40% in chlorination charge. E1 stage AOX was 24% less than in the control and the B O D / C O D ratio was increased. Also, the organochlorine content of the pulp was reduced by 41% at a chlorine dioxide substitution level of 40% [83]. Bajpai et al. [59, 60] reported that the total organic chlorine (TOC1) content in extraction stage effluent was reduced by 30% when the pulp was first pretreated with xylanase and then subjected to C E H bleaching.

L. S. Shin and B. Wang Department of Biotechnology, University of New South Wales, Sydney 2052, Australia 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 Factors Affecting L-phenylacetylcarbinol (L-PAC) Production . . . . . . . . . . 1 Pyruvate Decarboxylase (PDC) Activity . . . . . . . . . . . . . . . 2 Metabolic Status of Yeast . . . . . . . . . . . . . . . . . . . 3 Benzaldehyde Concentration . . . . . . .

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