This article has provided an overview of the use of centrifuges in various industries. The ubiquitous nature of the machine throughout the industrial spectrum is apparent. It appears in heavy industrial uses such as sugar and oil refining and in light industrial

Figure 8 Small industrial-scale centrifuge for dewatering fresh-cut produce. The machine is operated in batch mode, but use of insertable plastic bowl minimizes down time between loads. Reproduced with permission from Freshline Machines, Sydney, Australia.

separations such as dewatering of vegetables. Performance demands also vary widely, ranging from high g applications required in isolating and manufacturing the diverse products of biotechnology to dewater-ing hundreds of tons of municipal sewage per day using machines of relatively low g capability. This is made possible by the wide variety of machines available. The recent application of decanters as press replacements in the fruit and vegetable juice industry required the independent development and widespread use of pectin-digesting enzymes (pectinases) for routine juice production. The reduction in viscosity

D. J. Winzor, Department of Biochemistry, University of Queensland, Brisbane, Australia

Copyright © 2000 Academic Press

Analytical ultracentrifugation refers to the analysis of a macromolecular solution by its subjection to and release of dense core particles from the fruit mash which is characteristic of the action of these enzymes is a necessary precondition for the successful use of decanters. The fruit-processing industry is increasingly interested in the production of products from new, unconventional fruits and vegetables. An example is sea buckthorn, a fruit which consists of a seed, pulp and pulp oil, a three-phase system which might be separated into an oil stream, a stable opalescent juice and a seed containing pulpy ejecta in a single operation using a three-phase decanter. From these two examples drawn from the author's experiences in this industry it appears that future innovations are likely to be applications, which will in turn drive further refinement and development of the centrifugal machinery.

See also: Il/Centrifugation: Theory of Centrifugation.

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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