您现在的位置: 首页> 研究主题> 水解条件

水解条件

水解条件的相关文献在1975年到2022年内共计102篇,主要集中在轻工业、手工业、化学工业、中国医学 等领域,其中期刊论文92篇、会议论文7篇、专利文献34161篇;相关期刊65种,包括天然产物研究与开发、西北农林科技大学学报(自然科学版)、现代食品科技等; 相关会议7种,包括上海市药学会抗生素专业委员会首届青年学术论坛、中美乳品生产与加工研讨会暨第四届中国乳业科技大会、全国光催化技术与应用发展交流研讨会等;水解条件的相关文献由322位作者贡献,包括于海涛、倪辉、刘光东等。

水解条件—发文量

期刊论文>

论文:92 占比:0.27%

会议论文>

论文:7 占比:0.02%

专利文献>

论文:34161 占比:99.71%

总计:34260篇

水解条件—发文趋势图

水解条件

-研究学者

  • 于海涛
  • 倪辉
  • 刘光东
  • 华欲飞
  • 叶挺
  • 吴少雄
  • 夏重道
  • 姜官恒
  • 孔祥珍
  • 孙灵湘
  • 期刊论文
  • 会议论文
  • 专利文献

搜索

排序:

年份

    • 聂文林
    • 摘要: 钒钛磁铁矿电炉渣通过硫酸酸浸后得到的钛液具有酸度值高和硅含量高的特点,酸度值高会导致钛液难以水解以及水解率低等问题,而硅含量高会降低水解产物纯度,同时恶化水解条件。本文介绍了一种高酸度值高硅含量钛液制备二氧化钛的方法,通过采用生石灰或熟石灰作为降低钛液酸度值和硅含量的添加剂,生成大量柱状二水硫酸钙晶体,可使大量碎屑状二氧化硅附着于表面而除去,可有效达到降低酸度值和硅含量的目的,且生成物为沉淀,能通过简单的过滤操作去除,同时生石灰和熟石灰价格低廉,来源广泛,最终得到的二氧化钛纯度达到98.78%,是一种较为经济、简单的制备二氧化钛的方法。
    • 林源; 秦伟帅; 王佳琳; 张娜; 石林; 王岱杰; 孟武
    • 摘要: 玉米秸秆作为可再生农林业资源,其富含木质纤维素,被酸水解后可产生木糖、葡萄糖、阿拉伯糖等糖类,可作为碳源用于枯草芽孢杆菌发酵生产乙偶姻,在开发新能源和环境保护等方面具有重要的经济效益和社会效益。通过响应面设计研究了水解酸浓度、水解温度、水解时间对玉米秸秆水解液中糖类物质得率的影响,得到最优的预处理条件为:温度120°C,硫酸体积分数1.0%,水解时间1 h,在得到较多糖类物质的前提下减少了对玉米秸秆纤维结构的破坏,以枯草芽孢杆菌利用混合玉米秸秆水解液和LB培养基在5^(th) L自动发酵罐发酵至第5天,乙偶姻产量达到最大值10.4 g/L,其水解残渣可用于造纸,协同提高玉米秸秆的综合利用率。
    • 付力丹
    • 摘要: 酯水解是高中化学中的一个比较重要的部分,其主要分为酸性条件下的水解和碱性条件下的水解,对于酯水解的过程的理解首先要了解酯化反应,并通过实验更加深刻地理解酯水解的过程和反应原理,掌握酯水解的实验要点和知识重点,达到举一反三的作用,实现在运用中灵活解决酯水解类问题的目的.
    • 陈宏杰; 金永国; 马美湖
    • 摘要: In this study,the hydrolysis conditions for preparing egg yolk protein hydrolysate (EYPH) from defatted egg yolk were optimized based on the viability of MC3T3-E1 cells when cultured in the presence of EYPH.Additionally,we also evaluated the promoting effect of EYPH on proliferation and differentiation of MC3T3-E1 cells.The results showed that the hydrolysis with trypsin alone yielded a product with stronger cell proliferation promoting activity than when it was used in combination with flavourzyme.The optimum hydrolysis conditions for trypsin were as follows:hydrolysis time,6 h;temperature,37 °C;enzyme-to-substrate ratio,1∶50;and pH,8.0.EYPH prepared under the optimized conditions increased the viability of MC3T3-E1 cells by 9.1% and the proportion of S-phase cells by 4.69% indicating that EYPH significantly increased the proliferation of MC3T3-E1 cells.EYPH significantly affected differentiation and mineralization of MC3T3-E1 cells as indicated by a 9.1% increase in alkaline phosphatase activity,an increase in osteocalcin secretion of 2 mg/mL,and the formation of more mineralized nodules of MC3T3-E1.Furthermore,EYPH also could stimulate the expression level of RUNX2 gene by 6.12 times.These finding showed that EYPH could significantly promote proliferation and differentiation in osteoblastic MC3T3-E1 cells.Therefore,EYPH has the potential to be used as a functional food ingredient for its anti-osteoporosis activity.%鸡蛋黄经脱脂得到蛋黄蛋白质,直接以MC3T3-E1细胞增殖活力为指标,对水解条件进行优化,从而制备蛋黄蛋白质水解产物(egg yolk proteins hydrolysate,EYPH)并对其促MC3T3-E1细胞增殖分化的活性进行研究.结果表明:在对比胰蛋白酶与风味蛋白酶水解过程中,发现单一胰蛋白酶反应得到产物活性最好,胰蛋白酶反应的最佳水解条件为水解时间6h、水解温度37°C、酶与底物质量比1∶50、pH 8.0.EYPH使MC3T3-E1细胞增殖活力得到提高,为129.89%,细胞周期分析得到S期细胞增加了4.69%,这2个方面证实EYPH对MC3T3-E1细胞的增殖活力有显著的提高.EYPH对MC3T3-E1细胞分化矿化有显著影响,碱性磷酸酶活力提高了9.1%;刺激骨钙素分泌,其含量上升2 mg/mL;形成更多的矿化结节.此外,EYPH还能刺激RUNX2特异性转录因子的基因表达,表达量提高了6.12倍.结果说明EYPH对成骨细胞MC3T3-E1增殖分化有显著的促进作用,因此,EYPH对于抗骨质疏松方面有较好的应用潜力,为开发其功能性食品提供一定的数据参考.
    • 王本明; 姜官恒; 郎文培; 杨红光; 王丽杰; 于海涛
    • 摘要: 以植物饼渣为主要原料,运用生物技术和物理化学方法相应设计了生产液体有机肥完整的工艺流程。笔者主要介绍了目标营养元素的确定、水解条件的优化、蛋白酶产生菌种的培育以及大量营养元素强化等技术,针对各种控制方法,阐述了其原理、应用条件及研究进展情况,提出了低成本规模化制作植物液体有机肥的新思路,为有机肥料的资源化利用提供了参考。
    • 王本明; 姜官恒; 郎文培; 杨红光; 王丽杰; 于海涛
    • 摘要: Based on vegetable oil residue, the whole process of producing liquid organic fertilizer was designed by using biotechnology and physical-chemistry method. The research mainly introduced some technologies, including the determination of the target nutrient elements, the optimization of the hydrolysis conditions, the cultivation of the protease strains and the enhancement of the nutrient elements etc. The paper also expounded the principles, application conditions and research progress of the control methods, and proposed a new way which was low-cost for large-scale production of liquid organic fertilizer. The results can provide references for the resource utilization of organic manure.%以植物饼渣为主要原料,运用生物技术和物理化学方法相应设计了生产液体有机肥完整的工艺流程.笔者主要介绍了目标营养元素的确定、水解条件的优化、蛋白酶产生菌种的培育以及大量营养元素强化等技术,针对各种控制方法,阐述了其原理、应用条件及研究进展情况,提出了低成本规模化制作植物液体有机肥的新思路,为有机肥料的资源化利用提供了参考.
    • 刘晓莹; 马潞瑶; 王力; 汪星逸; 聂少平; 谢明勇; 殷军艺
    • 摘要: 以大粒车前子来源阿拉伯木聚糖为研究对象,采用完全酸水解结合高效阴离子色谱-脉冲安培法测定单糖组成,系统优化酸的种类和浓度、水解温度和时间、水解后样品放置时间等水解条件.结果表明,将车前子多糖置于2 mol/L H2 SO4、120°C常压油浴条件下水解2 h时,效果较好,但水解后稀释液放置时间不宜超过6 h.大粒车前子多糖主要由阿拉伯糖(8.89%)和木糖(41.52%)组成,同时检测出半乳糖醛酸(0.73%)、葡萄糖醛酸(3.44%)和微量的半乳糖、葡萄糖,结果重现性良好.利用上述最优条件水解黍子壳、燕麦麸皮和青稞来源阿拉伯木聚糖并分析单糖组成,均获得较好结果.本研究为分析各种来源阿拉伯木聚糖的单糖组成提供了参考.%A method of complete acid hydrolysis combined with high performance anion exchange chromatography and pulsed amperometric detection was developed for the monosaccharide composition analysis of arabinoxylan from the seeds of Plantago asiatica L. The parameters including hydrolysis methods, acid types, acid concentration, hydrolysis temperature, hydrolysis time and placement time, which would affect the hydrolysis process, were optimized. The results showed that it would have a better hydrolysis effect for polysaccharide from the seeds of Plantago asiatica L. with 2 mol/L H2 SO4 in an atmospheric oil bath at 120°Cfor 2 hours. However, the placement time for diluted solution of the hydrolyzed polysaccharide should be less than 6 hours. The polysaccharide was mainly composed of Arabinose (8. 89%) and Xylose (41. 52%) and Galacturonic acid (0. 73%). Glcuronic acid (3. 44%) was detected simultaneously, and there were also trace amounts of Galatose and Glucose. The results were reproducible. Other arabinoxylans from Panicummiliaceum L. shell, Avena sativa L. bran and Hordeum vulgare L. were taken for monosaccharide compositions analysis under the optimal hydrolysis conditions and the analysis results were good. This study would provide a good reference for monosaccharides composition analysis of arabinoxylans from various sources.
    • 梅朝阳; 胡康; 张玉; 朱正军; 陈茂彬
    • 摘要: In order to determine the best hydrolysis conditions of spent grains of coixseed wine lees by protease, four kinds of prote-ase were screened with peptide yield and hydrolysis degree as the evaluating indicators. As a result, alcalase was the best protease. The best hydrolysis conditions of alcalase were determined by single factors test and orthogonal test as follows:substrate concentra-tion was 6%(m/V), the use level of alcalase was 1200 U/g, temperature was at 55°C, pH was 8.5, and hydrolysis time was 6 h. Un-der above conditions, the yield of peptide and nitrogen solubility index were 68.12 % and 94.02 %, and the degree of hydrolysis reached up to 22.05%.%为确定蛋白酶水解薏仁酒糟的最佳工艺条件,以多肽得率及水解度为指标对4种蛋白酶进行筛选,确定最佳蛋白酶为碱性蛋白酶,并通过单因素实验及正交实验确定其最佳的水解条件底物浓度为6%(m/V),蛋白酶用量为1200 U/g,温度为55°C,pH值为8.5,反应时间为6 h.在此条件下多肽得率68.12%,溶解氮指数为94.02%,水解度为22.05%.
    • 刘红阳; 程显好; 王萌; 李维焕
    • 摘要: 为确定水解法定量测定肥料中聚谷氨酸(γ-PGA)含量的条件,优化了水解时间,检测了水解过程对谷氨酸的破坏情况,确定了水解法定量测定肥料中聚谷氨酸含量的参数条件.以水解法验证了醇沉过程对聚谷氨酸的沉淀的程度.水解法测定聚谷氨酸含量简单易行,结果可靠.
  • 查看更多

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号