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转化率
    In shake flask culture, L-Malic acid yields was 10.49 g/100ml at 32℃ for 96h, and the conversion rate of fumaric acid was 90.80%.
    在摇瓶培养条件下,32℃ 96小时,产L-苹果酸达10.49g/100ml,对富马酸的转化率达90.80%。
    The results showed that 60% conversion of volatile oil and 33% yield of α asarone could be attained using low alkali amount and without dehydration before recrystallization .
    结果表明 :在使用低的碱用量、产物重结晶前不经无水硫酸钠脱除残余水分的条件下 ,挥发油的转化率可达 60 %,α 细辛醚的一次得率可达 33%。
    When the condensation reaction was carried at 50 ℃ and pH 12,mole ratio of guaiacol and glyoxylic acid being 1 5,the conversion of glyoxylic acid in condensation reaction reached 90%.
    当反应温度为5 0℃ ,pH值为 12 ,愈疮木酚和乙醛酸物质的量比为 1 5∶1 0 ,缩合反应中乙醛酸的转化率可至90 %。
    It was found that the optimum reaction temperature is 50-100℃ and the optimum atom ratios of reactants are as follows:cyclohexanone/formaldehyde=1∶(1 12-1 20),toluene/cyclohexanone=0 94∶1.Under these conditions the product yield was 92% and the conversion of cyclohexanone was 94%.
    结果表明 ,最适宜的反应温度为 5 0 -1 0 0℃ ,最佳的原料配比为 :n(己酮 ) /n(甲醛 ) =1∶(1 1 2 -1 2 0 ) ,n(甲苯 ) /n(环己酮 ) =0 94∶1 ,产品收率 92 % ,环己酮转化率达 94%。
    The result indicated that the highest L malic acid yield was acquired when strain A 23 was inoculated and cultured in the mixed fermentation medium containing 150 g·L -1 glucose for 3 days, then strain V 81 was inoculated and cultured for 2 days. The concentration of L malic acid reached 73.3 g·L -1 while its molar conversion rate to initial glucose concentration in the medium amounted to 65.6%.
    结果表明 ,A- 2 3菌株接入含有 150 g· L-1葡萄糖的混合发酵培养基中培养 3d,后接入 V- 81菌株并继续培养 2 d,产酸水平最高 ,L-苹果酸浓度达 73.3g· L-1,对投糖浓度的摩尔转化率达 6 5.6 % .
    A resistant mutant of F79, the lysine Producer, was derived from the parent strain A111(HS-、 AEC') by mutation with MNNG (N - methyl - N' - nitro - N - nitrosoguanidine) and MF(Monofluoroacetic acid) . The Production of L - lysine· HCI of the mutant in flask was 7. 0% - 7. 5%, the conversion rate of glucose to L - lysine was 38% - 40%.
    以赖氨酸产生菌A111(HS-、AEC)为出发株,经化学诱变剂MNNG(N-甲基-N-硝基-N-亚硝基胍)及单氟醋酸处理获得单氟醋酸抗性突变株F79,摇瓶发酵产L-赖氨酸盐酸盐7.0%-7.5%,对糖转化率38%-40%,分别比A111株提高约25%及20%。
    the maximum production of L lysine· HCI was 1l%, the conversion rate of glucose was 45% -50% in shake - flask, in 16 L fermenter, the production of L - lysine· HCI was 12% - 14%, the coversion rate was 40% - 45%.
    在16L自控发酵罐发酵,产L-赖氨酸盐酸盐12%-14%,对糖转化率40%-45%。
    In 20 - 100m3 fermenter, the production of L - lysine· HCI was 8. 5% - 9. 5%,the conversion rate was 40% - 42%.
    在20-100m3发酵罐发酵,产酸率为8.5%-9.5%,对糖转化率40%-42%,提取总收率80%-85%。 成品(饲料级L-赖氨酸盐酸盐)质量符合国家标准(GB8245-87)。
    Higher conversion could be reached under the condition of EVA with 3% hydrolysis degree at 30℃ for 1 h.
    EVA 乳液水解程度为3% ,反应温度为30℃,反应时间为1 h 的条件下有较高的转化率
    Through mutating and screening high yield strains, optimizing seed culture and fermentation process and studying separation and purification processes of product, in the continuous commercial test unit with a capacity of 100t/a, the quantity of DCA is stabilized at about 140g/l with an average conversion rate of oleic acid at 73% , and the content of DCA is or exceeds 95%.
    通过诱变筛选高产菌种、优化种子培养和发酵工艺、研究产品的分离与提纯工艺,在连续运转的100t/a工业化试验装置上,发酵法生产DCA的产酸量稳定在140g/L左右,油酸的平均转化率达到73%,DCA的含量≥95%。
    In a fed-batch culture with glucose and MBA maintained at less than 3g/L and 4g/L respectively, the highest HMB concentration of 29.0g/L with a molar conversion yield of 57.3% was obtained at 102h, and the average HMB productivity was 0.098 g/(L·h).
    分批补料发酵中 ,连续流加葡萄糖和 MBA,控制发酵液中葡萄糖浓度不超过 3 g/L,MBA浓度不超过 4g/L ,1 0 2 h时 HMB浓度达 2 9.0 g/L ,转化率达 5 7.3 % ,HMB平均生产率达 0 .0 98g/( L· h)。
    Through shaking flask culture, the average production rate could reach 13.6%and conversion rate could reach 97.7% which was about 5% higher than traditional technology.
    经摇瓶发酵平均产酸稳定在 13 6 % ,转化率可达 97 4%。 比传统工艺转化率提高 5 %左右。
    Yeast extract contents in medium were 6.8? g/L. Comparing with the medium optimized for free cell fermentation in the literature,the conversion rate of xylose was improved from 82.9% to 88.0%.
    将微胶囊技术用于木糖醇的高细胞密度发酵 ,采用均匀设计和多元逐步回归方法对其发酵培养基进行优化研究 ,得到仅含 6 .8g/L酵母浸膏的优化培养基配方 ,与文献中针对游离发酵的优化培养基相比 ,新的培养基配方使木糖转化率从 82 .9%提高到 88.0 %。
    In the fermenting production of 1,3 propanediol with glycerol as substrate,the yield of 1,3 propanediol was greatly increased when adding glucose as cosubstrate,nut the concentration of 1,3 propanediol and the conversion ratio of glycerol to 1,3 propanediol were not increased.
    以葡萄糖和甘油为混合底物时 ,则可以显著提高菌体浓度 ,但是 1 ,3 丙二醇浓度和甘油到 1 ,3 丙二醇转化率没有提高。
    The conversion of linakxil was above 95.2% and contain over 94.1% of linalyl acetate in the product.
    芳樟醇转化率大于 95 2 % ,产品中乙酸芳樟酯含量大于 94 1%。
    In this paper,a new method of synthesis of 3-methyl-N,N-dimethoxyloneethyl amiline is reported by using anhydrous aluminum chloride, m -methyl aniline,and methacrylate at lower temperature,the conversion is over 95%,the yield is over 93%,the purity is over 96%
    本文报道了用无水三氯化铝作催化剂在低温下将间甲苯胺和丙烯酸甲酯转化为 3-甲基 -N ,N -二甲氧基羰基乙基苯胺的新方法 ,其反应转化率达 95 %以上 ,收率高于 93% ,纯度高于 96 %
    In 4 m\+3 fermentor, the average conversion rate of 4 successive fermentation is improved by 8.16% against the original, and the fermentation period reduces by 23.7%.
    在 4m3 发酵罐中 ,连续 4批发酵平均转化率较对照菌系提高 8.16 % ,周期缩短 2 3.7%。
    It could accumulate 61. 1g/L L-arginine in the medium containing glucose as carbon source and ammonium sulfate as nitrogen source when it was cultured at 30℃ for 4 days. The conversion rate of glucose was 20.2 % . Compared with the parental strain AG77, the yield of L-arginine and conversion rate of mutant AN78 were increased by 95% and 39.3% respectively.
    AN78菌株在20L发酵罐中,以葡萄糖为碳源,以玉米浆、硫酸铵等为氮源的培养基中培养4d,产酸率可达61.1g/L,对糖转化率20.2%,与AG77菌株相比较,分别提高了95%和39.3%。
    The effects of concentration of La 3+ ,Ce 4+ ,Nd 3+ , reaction temperature and reaction time on conversion and product distributions were also investigated.
    考察了La3+、Ce4+、Nd3+浓度、反应温度、反应时间对转化率和产物分布的影响。
    Conversion rate of lanolin in propyl alcohol reached 73.2% after reacting for 5 h. It was as high as the conversion rate after reacting 8 h under atmospheric pressure without the solvent.
    选择正丙醇作为溶剂 ,反应 5h后的转化率为 73 2 %,可以达到常压一步法反应 8h所达到的转化率
 

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