发酵培养基专著

细履平沙

一本老外写书的第四章，分与各们版主共享，当作福利。

细履平沙

Fermentation Technology Copyright © 2017 Elsevier Ltd. All rights reserved. INTRODUCTION Detailed investigation is needed to establish the most suitable medium for an individual fermentation process, but certain basic requirements must be met by any such medium. All microorganisms require water, sources of energy, carbon, nitrogen, mineral elements, and possibly vitamins plus oxygen if aerobic. On a small scale it is relatively simple to devise a medium containing pure compounds, but the resulting medium, although supporting satisfactory growth, may be unsuitable for use in a large scale process. On a large scale one must normally use sources of nutrients to create a medium which will meet as many as possible of the following criteria: 1. It will produce the maximum yield of product or biomass per gram of substrate used. 2. It will produce the maximum concentration of product or biomass. 3. It will permit the maximum rate of product formation. 4. There will be the minimum yield of undesired products. 5. It will be of a consistent quality and be readily available throughout the year. 6. It will cause minimal problems during media making and sterilization