Abstract:讨论了以淀粉基质为主原料发酵生产L—苹果酸的条件。通过正交试验,得到了一较佳的培养基:淀粉122%,豆饼粉1.0%,玉米粉2%,FeSO_4·7H_2O·700ppm,装液量(500毫升)70毫升。在此条件下,经5天发酵,L—苹果酸的积累量为7～7.6克/100毫升。

Abstract:Based on the research of growing candida in alcohol, distillage for production, a semi-directed breeding method was used to in crease the protein and methionine contents in candida cell, In the result, the protein contents of the desired mutants Was incre

Abstract:In this paper, an indirect estimation method was used to determine the substrate (glucose) utilization rate (GUR), the growth yield coefficient (y_x/(?)), and the alcohol yield coefficient (y_p/(?)) merely by the oxygen uptake rate (OUR) and quotient (RQ)

Abstract:Simultaneous distillation-extraetor apparatus was used for isolating the aroma in Wuxi hao teao. More than one hundred volatile components were identified with GC/MS. There are 25 alcohols and phenols, 14 ketones, 5 aldehydes, 10esters and lactones, 38 hy

Abstract:Low interracial tension behaviors-between aqueous solutions of SAS and alkanes, ineluding oil phase imitated to Daqing crude oil are studied. The effects of type and quantity of alcohols and inorganic salts on low interracial tension are examined. The val

Abstract:The principle in dehydration of the instant rice and the factors influencingrice dehydrated rate are studied. This paper suggests construction plan thcof long chain dryer whose, characteristics are high loadcoefficient of chain plates, steady technology c

Abstract:The structure of a testing system on temperature control together with its acheme, closed looo steo resoonse and main technical data were given,

Abstract:This article introduces an application of XHJ Connection-unit in the simulation experiment, Digital-filter, and some measures res trict disturbance and reduce errors.

Abstract:This paper introduces the method for connecting lines for analog-to-diglal converter ADC 0809(0808) and the circuits for connecting hard wares to a TP801 microcomputer together with sampling program; a general form of connection and program in using A/D c

Abstract:In this paper, the clustering method is studied for the order sample with subject to circle. The calculation, of these methods can be easily done by the computer, and two numerical examples are given.