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黑根霉
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  rhizopus nigricans
     Studies on the Reaction of Steroid C_(11)α-hydroxylation by Rhizopus Nigricans
     黑根霉催化甾体C_(11)α-羟基化反应的研究
短句来源
     A thermophilic strain Rhizopus nigricans SW3.41-11-51, which can convert 16α,17α-epoxy progesterone into 11α-hydroxy-16α,17α-epoxy progesterone at 34℃, was obtained from the original strain Rhizopus nigricans SW3.41 by mutagenesis with 60Co irradiation.
     采用60Co射线对黑根霉SW3.41孢子进行诱变,筛选得到能在34℃生长并转化生产11α-羟基-16α,17α-环氧孕酮的菌株SW3.41-11-51。
短句来源
     The effects of carbon source and pH on C_(11)αhydroxylation of 16α,17αepoxy4pregnene3,20-dione were studied basing on the figure of steroid C-(11)αhydroxylation by Rhizopus nigricans.
     从黑根霉(Rhizopus nigricans)对16α,17α环氧黄体酮的C11α羟基化反应发酵过程曲线开始,考察了碳源、pH对黑根霉的甾体羟基化转化过程的影响.
短句来源
     The rate of positive specific IgE antibody to Rhizopus nigricans was 31.2%; The rate of positive skin prick test was 11.5% and the rate of positive nose antigen challenge test was 4.6%.
     黑根霉特异性IgE抗体试验阳性率高达 31 2 % ,皮肤点刺试验阳性率达 11 5 % ,鼻粘膜抗原激发试验阳性率为 4 6%。
短句来源
     Rhizopus nigricans ( 3.2050, S01)and Curvularia lunata (3.4381, S02), used for 11β-hydroxylation of steroids, were tried to used as biocatalysts of hydroxylation of steroidal saponins and aglycones.
     选用已成功应用于甾体化合物羟化的黑根霉Rhizopus nigricans 3.2050(SO1)、新月弯孢霉Curvularia lunata 3.4381(SO2)对甾体皂苷和苷元进行羟基化修饰,未能成功。
短句来源
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  “黑根霉”译为未确定词的双语例句
     The results show that the optimum pH value was between 3 and 6.5,the maximum pb2+ uptake capacity was 88mg/ g.
     结果表明,黑根霉在pH=3—6.5范围内,对Pb2+、Cu2+、Mn2+、Cr(VI)几种主要重金属离子都有吸附作用,其中吸附Pb2+能力最高,饱和吸附量可达88mg/g。
短句来源
     When 12g/L 16α,17α-epoxy progesterone was used as the substrate in the presence of 3% Tween-80, the efficiency of transformation could reach to 43% with the yield of 4.5g/L after 43h.
     结果表明,在加入终浓度12g/L的底物和3%的吐温-80条件下,以耐温黑根霉SW3.41-11-51转化43h的转化率达到43%,得到4.5g/L产物。
短句来源
     STUDIES ON THE REACTION OF STEROID C_(11)α-HYDROXYLATION BY RHIZOPUS NIGRICAN
     黑根霉对甾体的C_(11)α羟基化反应
短句来源
     The break compressive strengthof the entrapped biomass was 128. 1N/cm2.
     明胶包埋后黑根霉具有较好的物理性能,断裂压缩强度为128.1N/cm2。
短句来源
     When using complex carbon source C(glucose:dextrin=1:1) the conversion rate was increased by 2% at the level of 100L bioreactor.
     黑根霉对甾体的羟基化转化过程中存在葡萄糖抑制问题,采用混合碳源C(葡萄糖:糊精为1:1)缓解了葡萄糖抑制作用,100L发酵罐试验转化率较对照提高了2%。
短句来源
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  相似匹配句对
     Black Gold
     [金]
短句来源
     Black Tulips
     郁金香
短句来源
     IMMOBILIZED CELLS OF RHIZOPUS NIGRICANS AND THEIR APPLICATION IN STEROID TRANSFORMATION
     固定化根霉细胞及其在甾体转化上的应用
短句来源
     STUDIES ON THE REACTION OF STEROID C_(11)α-HYDROXYLATION BY RHIZOPUS NIGRICAN
     根霉对甾体的C_(11)α羟基化反应
短句来源
     The Rhizopus oryzae AS.
     以米根霉AS.
短句来源
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  rhizopus nigricans
Native fungal biomass of fungiAbsidia orchidis, Penicillium chrysogenum, Rhizopus arrhizus, Rhizopus nigricans, and modified spruce sawdust (Picea engelmanii) sequestered metals in the following decreasing preference pb>amp;gt;Cd>amp;gt;Ni.
      
Fixation of triosephosphates in Rhizopus nigricans metabolism with living cells
      
Vitalbeobachtungen an Mitochondrien von Schimmelpilzen (Rhizopus nigricans)
      
Ultrasound and the ultramicroscopic structure of Rhizopus nigricans
      
The fungi Penicillium expansum, Aspergillus niger, Cladosporium herbarum, Thamnidium elegans, Mucor hiemalis and Rhizopus nigricans were cultivated on filter disks containing various concentrations of crude aflatoxin or coumarin.
      
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Microbiological hydroxylation of 16-dehydroprogesterone (1) with Absidia orchidis afforded 15β-hydroxy 16-dehydroprogesterone (2), 7β, 15β-dihydroxy-16-dehydlroprogestrone (3)and 6β, 15β-dihydroxy 16-dehydroprogesterone (4). Compound (3) was the major product. The result was different from that of hydroxylation with Rhizopus nigricans which afforded only the 11α-hydroxy derivative with the saturation of C_(16) double bond to give the unnatural 17α-configuration.The structure of compounds 2~4 have been characterized...

Microbiological hydroxylation of 16-dehydroprogesterone (1) with Absidia orchidis afforded 15β-hydroxy 16-dehydroprogesterone (2), 7β, 15β-dihydroxy-16-dehydlroprogestrone (3)and 6β, 15β-dihydroxy 16-dehydroprogesterone (4). Compound (3) was the major product. The result was different from that of hydroxylation with Rhizopus nigricans which afforded only the 11α-hydroxy derivative with the saturation of C_(16) double bond to give the unnatural 17α-configuration.The structure of compounds 2~4 have been characterized through chemical transformations and spectroscopic evidences.

用梨头霉(Absidia orchidis)加羟基于16-脱氢黄体酮(1)与用黑根霉(Rhizopus nigricans)转化的结果不同,即羟基不加入于C_(11)而加入于C_6、C_7、C_(15)或兼而有之,且⊿~(16)-双键不被饱和。所得产物是2~4,化合物(3)是主要产物。2~4的结构经化学转化和光谱方法测定。

The purpose of the study is to immobilize the whole cells of the filamentons fungus, Rhizopus nigricans, for the conversion of 16, 17-epoxyprogesterone into 11α-hydroxy 16, 17 epoxyprogesterone. The cells of fungus Rhizopus nigricans were immobilized in polyacrylamide, alginate, agar and other gels. The ability of these cells to carry out 11α-hydroxylation of epoxyprogesterone was examined respectively. No activities of the cells immobilized by polyacrylamide gel or some other methods were detected. Only those...

The purpose of the study is to immobilize the whole cells of the filamentons fungus, Rhizopus nigricans, for the conversion of 16, 17-epoxyprogesterone into 11α-hydroxy 16, 17 epoxyprogesterone. The cells of fungus Rhizopus nigricans were immobilized in polyacrylamide, alginate, agar and other gels. The ability of these cells to carry out 11α-hydroxylation of epoxyprogesterone was examined respectively. No activities of the cells immobilized by polyacrylamide gel or some other methods were detected. Only those cells immobilized by calcium alginate gel proved to be capable of hydroxylation. The mechanical strength of agar gel was comparatively weak. Under our experimental conditions, the recovery of the enzymatic activity of cells entrapped in alginate gel was 65% (taking enzymatic activity of free cells as 100%) and the immobilized cells can be used repeatedly over ten times. The transformation solution is a culture medium since it is beneficial to the growth and regeneration of coenzyme which is necessary for the hydroxylation reaction.

我们对固定化黑根霉细胞及其对16,17环氧黄体酮的11α-羟化反应进行了研究。黑根霉细胞用聚丙烯酰胺、海藻酸盐以及琼脂包埋等方法进行固定,并测定了它们的11α-羟化率。用聚丙烯酰胺等方法包埋的固定化细胞不显示转化能力,琼脂颗粒的机械强度差,仅海藻酸钙包埋的细胞显示转化能力。在本实验条件下,用海藻酸钙固定的黑根霉细胞酶活力回收率达65%(假设游离细胞酶活力为100%),使用次数10次以上,以培养液作为转化介质,因为有利于菌体的生长及辅酶的再生。

According to the study and analysis,each cotten variety has itsown special rhizosphere fungiflora.The number of rhizosphere fungi speciesof resistant varieties is more than of susceptible ones.The main rhizo-sphere fungi dominants of resistant varieties are Penicillum spp.,Aspergill-us spp.etc;those of susceptible varieties are Rhizopus nigricans,Fusariumdimerum,Myrithecium spp.,etc.The difference between resistant and susc-eptible varieties at 2~3 leave stagey,6~7 leave stage and sown in spring ismore remarkable...

According to the study and analysis,each cotten variety has itsown special rhizosphere fungiflora.The number of rhizosphere fungi speciesof resistant varieties is more than of susceptible ones.The main rhizo-sphere fungi dominants of resistant varieties are Penicillum spp.,Aspergill-us spp.etc;those of susceptible varieties are Rhizopus nigricans,Fusariumdimerum,Myrithecium spp.,etc.The difference between resistant and susc-eptible varieties at 2~3 leave stagey,6~7 leave stage and sown in spring ismore remarkable than that at square stage and sown in summer.

对棉花抗、感枯萎病品种在春播和夏播的2~3叶期、6~7叶期和现蕾期进行了根际真菌区系分析,结果表明:每一品种都有自己独特的根际真菌区系,抗病品种根际真菌种数多于感病品种,其根际主要优势种是:青霉(Penicillum pps.)曲霉(Asqergillus spp.)等,而感病品种则主要是黑根霉(Rhizoqns nigricans)、双胞镰刀菌(Fusarium dimerum)和粘帚霉(Clocladium spp.)等。抗、感品种这种差异在现蕾期比2~3叶期和6~7叶期、在夏播比春播有所减小。播期和生育期对根际真菌区系组成也有较大影响。

 
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