发酵工程复习题 大二 生物技术及应用（The second review of biological technology and application of fermentation engineering）.docVIP

发酵工程复习题 大二 生物技术及应用（The second review of biological technology and application of fermentation engineering） 1., fermentation engineering: the use of modern scientific and technological means, and microbial products required for the use of micro-organisms in the production process. 2 nutrient deficient strains: they are produced by mutagenesis and lack the ability to synthesize certain nutrients. It is necessary to add defective nutrients in their culture to produce normal growth mutants. 3 growth factor: any essential organic substance, such as amino acids, purines, pyrimidines, essential for the growth of microorganisms 4 precursors: some compounds added to the fermentation concentration, can be directly absorbed by the microorganisms in the biosynthesis process of binding to the product molecules, and the structure of its own and there is not much change, but the product yield is greatly improved due to the addition of a 5 thermal resistance: refers to the death time of a microorganism under a certain condition 6 the law of heat death: (logarithmic residual law) the rate of death of microorganisms in a culture medium is proportional to the number of microorganisms remaining at any given moment The 7 batch sterilization medium: the medium prepared in the fermentation tank or other containers, steam into the culture medium and the equipment used for heating, for a period of time to reach the requirement of sterilization temperature and pressure, and then cooled to the required temperature of fermentation process 8 continuous fermentation: that is, the medium passes through a continuous sterilizing device outside the fermentation tank for rapid continuous heating, sterilization, and rapid cooling, and then immediately enters the fermenter after being sterilized in an empty tank 9 membrane separation: refers to the pressure as the driving force, depending on the selectivity of the membrane, the liquid component separation and purification method 10 inoculum size: volum