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转化率
    By comparison with original condition, the increment of conversion yield reached 39%, 62.3 %, 38% and 21.1%, respectively when adding dodecane concentration of 5%, surfactant Tween80 concentration of 5%, ultrasonic irradiate for 10 min, external electron acceptor vitamin3 concentration of 5 mg/L.
    超声处理水悬液10 min时转化率提高幅度为38%; 外源电子受体中维生素K3浓度为5 mg/L时转化率提高幅度为21.1%;
    4.3, peptone 4.3, soybean flour 4.9. 100.4g/L L-lactic acid and 91.3% conversion were achieved in this culture, improved by 10.5% and 8.7% respectively.
    发酵结果为100.4g. L~(-1),转化率为91.3%;
    On this condition, 102.4g/L L-lactic acid were achieved and the conversion reached 93.1%.
    摇瓶分批发酵条件优化后的L-乳酸发酵结果为102.4 g. L~(-1),转化率为93.1%。
    after ion beam implantation on Aspergillus ochraceus NG0216, Aspergillus ochraceus NG1203 possessing good genetic stability was selected with higher ability of hydroxylation than the original strain, and the conversion rate increased from 2.29% to 6.74%.
    以此为出发菌株,通过离子束诱变,筛选得到一株高产菌株Aspergillus ochraceus NG1203,对齐墩果酸的生物氧化转化率由2.29%提高至6.74%,且遗传性状稳定,由此得到了本课题的实验菌株。
    feeding 10 g/L glucose each day after 48 h cultivation could gain the conversion rate;
    实验结果还表明从48 h起每日补加葡萄糖10 g/L能保证较高的转化率;
    continuously feeding H2O2 solution to the broth was started as the cell’s incubation 96 h upto its final content 5 mmol/L, and the conversion rate was kept at a high level.
    菌体培养96 h始流加H2O2,最终浓度达到5 mmol/L能够大幅度提高转化率
    The conversion rate of hydroxylation was raised to 13.24% under condition that the content of ethanol in the medium was 3% (V/V), 2 mg/L oleanolic acid as inducer was fed after 20h incubation, and substrate was fed in batch after 24 h.
    经优化操作条件得到:选择乙醇作为有机溶剂,在反应液中最终的浓度为3%(V/V),加入2 mg/L的齐墩果酸作为诱导剂,24 h后,分批添加,齐墩果酸的转化率可达到13.24%。 最后,对水/有机相两相体系羟基化齐墩果酸进行了初步研究:选择乙酸丁酯作为两相酶转化体系中的有机相;
    flavus 304, a L-malic Acid producing Strain ASP. flavus T18(having a resistance To Zn~(++) and high temperature). Under suitable conditions Strain T18 accumulate L-malic Acid 3.31g/dl in shaking flask and the conversion efficiency by weight of the to tal Starch is 30%.
    我们从黄曲霉野生型菌株中获得到一些变异株,L-苹果酸产生菌株黄曲霉T18(具有抗Zn~(++)和耐高温)在适宜条件下摇瓶中积累L-苹果酸3.31克/分升,总淀粉重量转化率为30%。
    flavus 304, a L-malic Acid producing Strain ASP. flavus T18(having a resistance To Zn~(++) and high temperature). Under suitable conditions Strain T18 accumulate L-malic Acid 3.31g/dl in shaking flask and the conversion efficiency by weight of the to tal Starch is 30%.
    我们从黄曲霉野生型菌株中获得到一些变异株,L-苹果酸产生菌株黄曲霉T18(具有抗Zn~(++)和耐高温)在适宜条件下摇瓶中积累L-苹果酸3.31克/分升,总淀粉重量转化率为30%。
    Results of the experiments indicate that in a 0.2 mmol/L potassium phosphate buffer, pH 7.0, containing 75 mmol/L glucose, 15 mmol/L AMP and 5 mmol/L MgSO_4. 7H_2O, the conversion rate of ATP can reach 100% at 34℃ within 1 h. For 10 consecutive batches, the conversion rate of ATP can be maintained over 90%.
    在含有15 mmol/L AMP,75 mmol/L葡萄糖,5mmol/L硫酸镁(MgSO_4·7 H_2O)的0.2 mol/L磷酸缓冲液(pH 7.0)中,在34℃振荡反应1h,ATP转化率可达100%,分批连续反应10次,ATP转化率保持在90%以上。
    The average yield of L-Lysine was 6.5% and the average conversion rate of sugar to L-Lysine was 40.2%.
    平均产L-赖氨酸6.5%,平均转化率40.2%。
    The ratio of sugar production and cellulase conversion by means of various pretreatment methods were studied. The effect was high with 1% NaOH in 100℃ for 1h.
    对不同预处理方法与底物得糖率,纤维素转化率的关系进行了研究,以1%NaOH在100℃煮沸1h效果最好。
    The optimal conditions of straw enzymolysis were measured. Under the optimal conditions its hydrolytic rate,concentration of sugar and cellulase conversion rate reached 53.8%, 5.0% and 80.2% respectively
    研究了稻草酶解的适宜条件,在pH5、50℃、底物浓度7%、酶解48h的条件下,底物得糖率达53.8%,含糖量5.0%,全纤维素转化率80.2%。
    A higher conversion rate 52. 2% was obtained by 10 L jar fed-batch fermentation.
    利用10立升罐发酵其转化率为44.3%,利用流加糖手段可将转化率提高至52.2%。
    As compared with the conventional batch fermentation process,this new method decreased the fermentation period from 216 h to 144 h, increased the sugar conversion rate from 88. 4% to 96. 6% and the citric acid production rate from 0. 447g/1. h to 0. 753g/1. h,respectively.
    与传统的发酵方法相比,萃取发酵使发酵周期由9天缩短到6天,糖转化率由原来的88.4%提高到96.6%,柠檬酸生产速率由0.447g/I·h提高到0.753g/l·h。
    A new strain, Aspergillus niger 2402T, was isolated from 2402 using a citric acid-malt extract medium. The average citric acid production rate reached 2.1 g/L. h and the conversion of sugar was not less than 95%.
    2402的柠檬酸生产速率受到pH的影响,经柠檬酸-麦芽汁培养基筛选,得到一株2402T,平均柠檬酸生产速率达2.1g/L·h,对糖的转化率不低于95%。
    In order to get the best composition of sucrose, K2HPO4; (NH4)2SO4, yeast extract and peptone, a five factors four levels orthogonal test was carried out. In optimal conditions, the conversion rate was raised from 50. 8% to 56.21%.
    为寻求蔗糖、K_2HPO_4、(NH_4)_2SO_4、酵母膏和蛋白胨等主要营养因素的最佳配比,我们设计了五因素四水平正交试验,结果使该菌对蔗糖的转化率从50.80%提高到56.21%.
    With a medium of 30 ml and a shaker with rotating speed of 160- 180 r/min and a DO level of 8-10% during the metaphase of fermentation, a GA yield of 6. 56% and a sugar acid conversion rate of 55% can be achieved.
    在装液量为30ml,摇床转速为160-180r/min,发酵中期溶氧水平8-10%时,谷氨酸产率6.56%,糖酸转化率55%。
    The conversion is 58%and the selectivity to isopentanoic isopentanoate is 93%at 285℃,0.6MPa and WHSV=1.5, while the conversion is 54%and the selectivity is 98%at 255℃,0.4MPa,WHSV=0.5.The reaction mechanism is supposed to be consisted of three consecutivereaction steps:dehydrogenation, disproportionation and esterification.
    进料液空速为1.5h ̄(-1)、285℃、0.6MPa下转化率58%,酯选择性93%; 液空速0.5h ̄(-1)、255℃、0.4MPa下转化率54%,酯选择性98%。
    It was found that the addition of 0. 1% of this acid increased the production of nC16 by 20-30%. In benchtype fermenter of 16L and under the optimum conditions with 20%(v/v) of nC16, pH maintained at 7. 5- 8. 0, the yield of DC16 reached 120g/L in 5 days ,the corresponding rate of conversion was 79%.
    在16L自动控制罐上,在最佳条件下,加入20%(v/v)正十六烷(nC_(16)),发酵5天,DC_(16)高达120g/L,nC_(16)的转化率高达79%.
 

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