By Owen P. Ward (auth.)
Methods for processing of organic fabrics into helpful items signify crucial middle production actions of the meals, chemical and pharmaceutical industries. at the one hand the concepts concerned comprise good demonstrated method engineering methodologies equivalent to blending, warmth move, dimension amendment and numerous separatIon and fermentation approaches. moreover, new bioprocessing practices bobbing up from the intriguing fresh advances in biotech nology, together with cutting edge fermentation cellphone tradition and enzyme dependent operations, are swiftly extending the frontiers of bioprocessing. those increase ments are leading to the advent to the marketplace position of an grand variety of novel organic items having exact functions. certainly, the us workplace of know-how review· has concluded that 'competitive virtue in components concerning biotechnology may well rely as a lot on advancements in bioprocess engineering as on thoughts in genetics, immunology and different components of simple science'. Advances in analytical instrumentation, computerization and approach automation are taking part in a massive position in technique keep an eye on and optimization and within the upkeep of product caliber and consistency features. Bioprocessing represents the commercial perform of biotechnology and is multidisciplinary in nature, integrating the organic, chemical and engineering sciences. This ebook discusses the person unit operations concerned and describes a wide selection of vital commercial bioprocesses. i'm very thankful to Sanjay Thakur who assisted me within the number of fabric for this book.
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Extra resources for Bioprocessing
Hoare, M. and Dunnill, P. (1987). Biochemical engineering aspects of ('ell disruption, in Separations Jor Biotechnology. S. , pp. 62-79. Chichester, Ellis Horwood. A. (1984). Liquid-solid systems, in Perr/s Chemical En/iinem' Handbook, 6th Edition. W. , pp. 19:1-109. New York, McGrawHill. Ryan, E. P. (1988). -yllophoroles in production of yeast extract. Process Biochemist~y 23, 12-16. D. and Melling, J. (1985). Large-scale extraction and purification of enzymes and other proteins. Handbook oj Enzyme Biotechnology, 2nd Edition.
3 Bioreactor sterilization and sterility IIlaintenance Most bioreactor systems operate under aseptic conditions using a pure culture of the process micro-organism and excluding contaminating organisms. Consequently, the bioreactor and its medium contents must be sterile prior to inoculation and must be designed to exclude contaminating organisms during the culture process. Small disposable bioreactors, usually made of polystyrene, are normally sterilized using ethylene oxide during the manufacture process.
6 Diagrammatic representation of three operating modes of hollowfibre reactor systems. magnitude) along the axial length of the fibre (after Tharakan and Chau, 1986). Bioreactors in Bioprocessing 47 polymer coat is normally designed to allow free diffusion of small molecules while restricting the movement of both the cells and their products. , 1987). Antibody retention within the microcapsule facilitates downstream processing starting with a high product concentration with no detectable contamination of product with non-specific serum immunoglobulins.
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