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   发酵条件下 在 一般化学工业 分类中 的翻译结果: 查询用时:0.043秒
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发酵条件下
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    THE COMPARISON OF VARIOUS STRAINS OF AUREOBASIDIUM PULLULANS PRODUCING PULIULA AT DIFFERENT CONDITIONS
    几株出芽短梗霉在不同发酵条件下产生多糖的比较
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    Under the optimal fermentation conditions,the activity of fibrinolysin reached 3643 U/ml(urokinase unit) in shake flask,and 2050 U/ml(urokinase unit) in 15 L fermentor.
    在最适发酵条件下,摇瓶发酵产豆豉溶栓酶酶活达到3643U/mL发酵液(尿激酶单位),15L发酵罐发酵产豆豉溶栓酶酶活达到2050U/mL发酵液(尿激酶单位)。
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    When fermentations were conducted in anaerobic bottles,the final succinic acid concentration of SF-9(35.09 g/L) increased 21.4%,and the mass ratio of succinic acid/acetic acid increased from 3.3 to 7.5 compared with those of the parent strain.
    以50 g/L的葡萄糖为碳源,在培养瓶厌氧发酵条件下其琥珀酸产量(35.09 g/L)比出发菌株(28.91 g/L)提高了21.4%,琥珀酸/乙酸比率(w/w)从3.3∶1提高到7.5∶1。
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    In the same measure , the biomass was 10.25 mg/L, iron content of the yeast cell was 7.43 mg/g.
    利用60Co辐射诱变,选育出一株正突变菌株R4-5-27,在同等发酵条件下,生物量达到10.25mg/L,铁含量7.43mg/g,总铁含量为76.16mg/L,比出发菌株提高了1.59倍。
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    The enzyme activity reached 22.37U/ml in fermentation. When the L-asparaginase was treated by chemical precipitation process with ammonium sulfate,30.8% yield of enzyme with a specific activity of approximately 0.55U/mg was obtained and the purity of product was increased 9.85 fold.
    在此发酵条件下,L-天冬酰胺酶发酵液酶活力的峰值可达到22.37 U/ml、产酶稳定期持续7~8 d,利用吴氏提取工艺可以得到回收率为30.8%,纯化倍数为9.85,比活力为0.55 U/mg的L-天冬酰胺酶。
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The present article studied on the breeding of 5'-Inosinic acid-producing (IMP) strains and the effects of fermentation conditions on the accumulation of 5'-IMP.Parent strain, corynebacterium glutamicus 265 was step-wise mutated with UV, DES NTG etc.Based on these conventional mutation, a new method-treating protoplast with mutagen-was used. At last, a new 5'-IMP-producing mutant 519, which accumulates 7g of 5'-IMP per liter, two times more than parent strain 265 under the optimal fermentation conditions, was...

The present article studied on the breeding of 5'-Inosinic acid-producing (IMP) strains and the effects of fermentation conditions on the accumulation of 5'-IMP.Parent strain, corynebacterium glutamicus 265 was step-wise mutated with UV, DES NTG etc.Based on these conventional mutation, a new method-treating protoplast with mutagen-was used. At last, a new 5'-IMP-producing mutant 519, which accumulates 7g of 5'-IMP per liter, two times more than parent strain 265 under the optimal fermentation conditions, was obtained.The factors affecting the accumulation of 5'-IMP have also been investigated, these factors mainly include, seed and fermentation media, pH value, the time of seed cultivation, the amount of seed added to fermentation medium, aeration, fermentation temperature and additions of same substances, etc. The effecting mechanisms of some factors on accumulation of 5'-IMP were discussed in term of theory.

本文对5'-肌苷酸产生菌的选育及发酵条件对产酸的影响作了研究。 以谷氨酸棒杆菌265为出发菌,利用紫外线硫酸二乙酯以及亚硝基胍等常规诱变手段进行了反复诱变。在此基础上,又采用原生质体诱变的新技术,最后获得一株突变株519,在最佳发酵条件下积累肌苷酸量达7g/L,比原菌株提高了2倍。 本文还对影响发酵产酸的各种因素进行了研究,主要包括种子培养基和发酵培养基、pH值、种龄、接种量、通风量、温度以及添加某些成分等对发酵产酸的影响,并就其中某些因素的影响从理论上进行了探讨。

Original strain, Bacillus Subtilis 7171-9-1, was mutated stepwise th -rough physical and chemical mutational methods. A high inosine producer GMS7 was obtained, which is an adeninerequiring, 8-azaguanine resistant sulphaguanidine-resistant and streptomycin-resistant mutant. The mutant could accumulated an average of 21.35g/L and the highest of 23.21g/L of inosine-1.4 times more than original strain, under the optimul fermentation conditions. The changes of forms of bacterium in the process of fermentation were...

Original strain, Bacillus Subtilis 7171-9-1, was mutated stepwise th -rough physical and chemical mutational methods. A high inosine producer GMS7 was obtained, which is an adeninerequiring, 8-azaguanine resistant sulphaguanidine-resistant and streptomycin-resistant mutant. The mutant could accumulated an average of 21.35g/L and the highest of 23.21g/L of inosine-1.4 times more than original strain, under the optimul fermentation conditions. The changes of forms of bacterium in the process of fermentation were observed from the angle of morphology Besides, the affecting of some factors on inosine fermentation was discussed.

以肌苷产生菌枯草杆菌7171—9—1为出发菌株,经物理、化学诱变剂连续处理,获得一株腺嘌呤营养缺陷型并对8—氮杂鸟嘌呤、磺胺胍、链霉素有三重抗性的突变株GMS7,在最佳摇瓶发酵条件下,平均产肌苷为21.35g/L,最高可达23.21g/L,比原菌提高了1.4倍。此外从形态学角度,跟踪观测了肌苷发酵过程中菌体形态的变化,并探讨了各种因素对发酵产苷的影响。

This institute designs the type structural fermentor in 20 cubic metre, its agitator electromotor powew lower about 22 kilowatts. The fermentation liguor concentraion of the burdening matarital samewhat increased that origiral fermentation liguor increased suger reserve<2% .In this essential fermentation condition the using Aspergillus niger UV-11-AN5-1 mutation strain produced the glucoamylase activity to average about 14601 unitlml, and the highest activity was about 15115 unit/ml that the improving yield...

This institute designs the type structural fermentor in 20 cubic metre, its agitator electromotor powew lower about 22 kilowatts. The fermentation liguor concentraion of the burdening matarital samewhat increased that origiral fermentation liguor increased suger reserve<2% .In this essential fermentation condition the using Aspergillus niger UV-11-AN5-1 mutation strain produced the glucoamylase activity to average about 14601 unitlml, and the highest activity was about 15115 unit/ml that the improving yield was about 41.2%. The fermentation period was average about 107.2 hour and enzyme activity about 136, 2 unit/ml per hour was produced. The producing glucoamylase of one fermentor can lower electricity consumption 679.2 kilowatts and yearly output 300 fermentation tank of the glucoamylase can lower electricity consumption 20.38@10 4 kilowatts.

本研究所设计新型结构的20M~3发酵罐,其搅拌电动机的功率较低,为22千瓦。发酵液的投料浓度略增高,为原发酵液增加含糖量<2%。在这种发酵条件下,以黑曲霉UV11 AN5—1变异菌株产葡萄糖淀粉酶的活力,平均达14601单位/毫升,最高达15115单位/毫升,提高产率41.2%。发酵周期平均为107.2小时,每小时产酶活力为136.2单位/毫升。生产1罐葡萄糖淀粉酶,可降低耗电量679.2千瓦,年产300罐,可降低耗电量20.38×10~4千瓦。

 
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