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    The optimum conditions for synthesizing the intermediate,4-hydroxy-2-octanone are as follows: reaction time,6 h; reaction temperature,(25 °C); concentration of alkali,4%;
    缩合反应合成中间体4-羟基-2-辛酮的最佳条件为:反应时间6 h,反应温度25°C,碱的浓度4%,丙酮与戊酮的摩尔比4∶1,脱水采用磷酸,副产物少,收率高(85%);
    The results showed that the optimal conditions for synthesis of benzyl acetate were: the molar ratio of acetic acid to benzyl alcohol was 2∶1,the amount of the water carrier was 40%,the amount of the catalyst was 3.5%,and reaction time was 6 h.
    结果表明,乙酸苄酯最适宜的合成工艺条件为:酸醇摩尔比2∶1、催化剂用量3.5%(占总质量)、带水剂(苯)用量40%(占总质量)、反应时间6 h。
    Isoamyl isovalerate was synthesized through esterification reaction by using isovaleric acid and isoamyl alcohol as raw materials and nano-H4SiW12O40/SiO2 as catalyst, the influencing factors in the reaction were studied, and the results showed that the esterification rate could reach 98.6 % under the conditions of the ratio of alcohol-acid 1.4∶1, the use level of catalyst 5 %, and the reaction time 1.5 h.
    以纳米复合钨硅杂多酸为催化剂,异戊酸和异戊醇为原料,通过酯化反应合成苹果油,对酯化反应的影响因素进行了研究,结果表明,在醇酸物质的量比为1.4∶1,催化剂用量5%,反应时间1.5h的条件下,酯化率可达98.6%。
    Synthesis of isoamyl laurate from lauric acid and isoamyl alcohol with nanometer H3PW12O40 / SiO2 as catalyst is studied, the results showed that nanometer H3PW12O40/ SiO2 was a good catalyst for synthesizing isoamyl laurate, the oplimal conditions were found as follows: molar ratio of lauric acid to isoamyl alcohol was 1∶5, the weight of catalyst was 5%, the reaction time was 2h, yield was about 99.1%.
    以纳米型复合杂多酸H3PW12O40/SiO2为催化剂,月桂酸和异戊醇为原料,合成月桂酸异戊酯。 实验结果表明,纳米复合磷钨酸是合成月桂酸异戊酯的良好催化剂,适宜的工艺条件为酸醇物质的量比为1︰5、催化剂用量占酸质量的5%、回流反应时间为2h,酯化率可达99.1%。
    The optimal technological conditions of sulfonation which obtained by orthogonal tests were:n(castor oil acid)∶n(sulfuric acid)=1∶2,reaction temperature is 50 ℃ and reaction time is 6 h.
    结果表明,最佳工艺条件为:n(蓖麻油酸)∶n(浓硫酸)=1∶2,反应温度50℃,反应时间6h。
    The influence of substrate concentration,reaction time etc. on the synthesis of L-ascorbic acid esters were also investigated and the reaction conditions were optimized. For hardened palm oil,the optimum reaction conditions were as follow: reaction time 9 hours under 55 ℃ with the initial concentration of oil 200~600 mmol/L.
    对影响合成抗坏血酸脂肪酸酯的因素进行了探讨,确定了最适反应条件:初始油脂底物浓度为200~600mmol/L,温度为55℃,反应时间为9h。
    The optimum reaction conditions were: the molar ratio of ethyl acetoacetate to ethylene glycol was 1:1.8,the quantity of catalyst was equal to 2% ethyl acetaoacetate,amount of cyclohexane was 20mL,and the reaction time was 3h.
    最佳反应条件为:n(乙酰乙酸乙酯):n(乙二醇)=1:1.8,催化剂用量为乙酰乙酸乙酯质量的2%,带水剂用量为20mL,反应时间3h。
    The main process parameters were optimized by orthogonal test. The optimized operation conditions were: reaction temperature 100 ℃,reaction time 15 min,mole ration of β-naphthol to ethanol 1∶5.5,and the dosage of catalyst 2.5 g. Under these conditions,the yield of β-naphtyl ethyl ether was above 70%.
    用正交试验方法对主要影响因素进行了优化,得到的优化条件为:反应温度100℃,反应时间15 min,反应物摩尔比为β-萘乙醚∶乙醇=1∶5.5,催化剂用量2.0 g,在此优化条件下,合成产物收率可达70%以上。
    The optimum ratio of raw material to liquid, the size of corn germ, cellulose dosage, protease dosage, reaction time for cellulose-catalyzed hydrolysis and for protease-catalyzed hydrolysis were 1:0.5, 120 mesh, 5000 U/g, 500U/g, 6h and 3h, respectively.
    确定了最佳提取参数为料液比为1:0.5,玉米胚芽颗粒大小为120目,纤维素酶添加量为5000U/g,蛋白酶添加量为500U/g,纤维素酶酶解时间为6h,蛋白酶酶解时间为3h。
    The yield of borneol and isoborneol was 52.93%,and selectivity for borneol was 60.46%at the conditions of programmed temperatures,reaction time 315 min,saponification time 1h,mass part of catalyst 5%,and terpineol:chloroacetic acid 100∶25(mass ratio).
    酯化反应采用程序升温,时间315 min,皂化时间1 h。 催化剂用量为松节油质量的5%,松节油∶氯乙酸为100∶25(质量比)时,龙脑得率为52.93%,正龙脑的选择性为60.46%。
    After the orthogonal experiment, the optimal parameters of phospholipase A1 hydrolysis were obtained at the following: reaction temperature of 60 ℃, enzyme volume of 4 U/g, and reaction time of 5 h. Under this condition, the acid value of the hydrolyzed product reached 60.65 mgKOH/g.
    通过正交试验得到磷脂酶A1水解的最佳反应条件:反应温度60℃、加酶量4U/g、反应时间5h,在该条件下水解产品的酸值为60.65mgKOH/g。
    Effect of operation parameters on degumming performance was discussed. The optimal condition was chosen as reaction time of 200 min,enzyme dosage of 25 mg/kg and reaction temperature at 46~48℃ with pH 4.8,and the residual phosphorus content could be decreased to 4.7 mg/kg.
    利用新型微生物磷脂酶Lecitase Ultra进行大豆油脱胶的研究,探讨了若干操作参数对大豆油脱胶效果的影响,确定了该酶较优的反应条件:反应时间200 min,加酶量25 mg/kg,pH值4.8,温度46~48℃,大豆油含磷量能降到4.7 mg/kg。 结果表明,Lecitase Ultra应用于植物油脱胶效果好且稳定,是一种更适宜于工业化应用的酶种。
    Based on the orthogonal experiment,the optimum synthetic conditions of benzyl propionate were resulted as follows: the molar ratio of benzyl alcohol to propionic acid was 1.5∶1.0,mass of the catalyst was 0.6 g(when propionic acid was 0.2 mol),the volume of the water removing reagent cyclohexane was 12 mL,and the reaction time was 2.5 h. The yield of esterification was more than 96% under above conditions.
    采用该催化剂通过正交试验得到合成丙酸苄酯的最佳条件为:n(苄醇)∶n(丙酸)=1.5∶1.0,催化剂用量为0.6 g(以0.2 mol丙酸为准),带水剂环己烷用量为12 mL,反应时间为2.5 h,其酯化率可达96%以上。
    By using supported nanoheteropolyacid as the catalyst and methylbenzene as water-taken agent, lauric acid and isoamyl alcohol reacted to form isoamyl laurate. Factors influencing yield were discussed, the optimum reaction conditions were as follows: the mole ratio of acid to alcohol was 1:5,the amount of catalyst was 4%,the reaction time was 2h and reaction temperature was 115~124℃, the esterification yield was about 98%.
    以十二酸、异戊醇为原料,负载型纳米固体杂多酸为催化剂,甲苯作带水剂,合成了十二酸异戊酯,同时对影响酯化率的因素进行了考察,结果表明其优化工艺条件为:酸醇物质的量比为1:5,催化剂用量为4%,反应时间2h,反应温度115~124℃,酯化率可达98%。
    The optimum conditions were:reaction temperature 210℃,reaction time 2 h,NaOH dosage 40%(W/W),ratio of oil to water 1∶2(W/W),and the conversion yield under these conditions was 98.3%.
    确定的最佳条件为:反应温度210℃,反应时间2 h,加碱量为油重的40%,油水比1∶2,在此条件下转化率为98.3%。
    When the mass of catalyst is 1% that of raw material, reaction temperature is 120~140℃ and reaction time is 2 h, in yield of 90% and its purity is over 98%.
    当催化剂用量为原料质量的1%,反应温度为120~140℃,反应时间2小时,产物收率为90%,纯度98%以上。
    The PUFA was extracted by interesterification and the best extracting conditions were:the rate of ethanol to turle oil 0.73:1,sodium hydroxide 3%(of oil weight),reaction temperature 65℃,reaction time 2h.
    采用乙酯化法提取甲鱼油中的多不饱和脂肪酸,通过正交实验确定了最佳提取条件:乙醇/甲鱼油比0.73:1,NaON用量3%(油重),反应温度65℃,反应时间 2h;
    The optimized conditions were 0.08mol/L phosphate buffer (pH5.6),adding 2 mmol/molGlu of PLP and 20mmol/molGlu of Ca2+ , 42.5U/mmolGlu of rice germ, and the ratio of rice germ to solvent was 1:10, reaction time and temperature were 6h and 40℃.
    外加Glu和添加米胚GAD的激活剂是制备高浓度GABA的有效方法。 最佳工艺条件是:pH5.6、0.08mol/L磷酸缓冲液, PLP和Ca2+的添加量分别为2 mmol/molGlu和20mmol/molGlu,米胚的用量为42.5U/mmolGlu,料液比为1/10,反应时间和温度为6h和40℃。
    The best reaction time of the membrane construction of microcapsules was found to be 15mm, and the best reaction time of the liquefying of microcapsules to be 30mm.
    对微胶囊性能的考察还发现,使用分子量约3万,浓度为0.6%,pH为5.5的壳聚糖溶液,当控制成膜时间15min左右、液化时间30min时,制得的微胶囊强度较好、内部液化完全。
    The effect of proportion of methanol to oil, proportion of methanolic sodium to oil, reaction temperature, reaction time was studied.
    实验研究了甲醇/原料质量比、甲醇钠/原料质量比、反应温度,反应时间等因素对甾醇酯转酯化反应的影响。
 

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