研究了食用天然色素的一般提取工艺及其理化性质,并实验分析了光、热、酸碱、防腐剂、氧化还原剂对萝卜红色素、郁金香红色素、郁金香黄色素的稳定性影响。
The paper reports a way to study the common extracting technology of food natural pigment, and its physical and chemical property, such as, light, hot, acid, alk, antiseptic, oxidizer and reducer.
这意味着甘氨酸的氧化,确能为小麦幼苗细胞质中NO_3 ~-还原提供还原剂和为根系NO_3 ~ -吸收提供能量。
It was suggested that oxygenation of glycine provided indeed reductant for NO_3 ~ - reduction in cytoplasms and energy for NO_3 ~ - uptake by roots of wheat seedling.
在酸化作业中所用的一种酸添加剂。它可为用于络合铁离子的螯合剂,或为用于使氧化状态的铁还原的还原剂(如赤藓酸)。
An acid additive used in acidizing that is either a a sequestering agent used to complex iron ions orb a reducing agent such as erythorbic acid used to reduce the oxidized state of iron.
在无任何外加溶剂及共还原剂的条件下,应用此高分子金属卟啉作为催化剂,选择性地催化空气氧化环己烷为环己酮和环己醇。
This macromolecular metalloporphyrin was used as the catalyst for the first time for cyclohexane oxidation to cyclohexanol and cyclohexanone with air in the absence of additives or solvents.
又在什么情况下作还原剂呢?本文着重阐述了H_2O_2扮作氧化剂或扮作还原剂主要取决于反应电动势的大小。
This article has emphatically illustrated that whether H_2O_2 acts as an oxidizing agent or reducing agent depends on the electromotive force EMF of the reaction.
研究了氧化剂、还原剂以及温度对环氧丙烯酸酯胶粘剂性能的影响。
The effect of the oxidant, the reductant, and the temperature on the performance of the adhesive were investigated.
介绍了具有探索性意义的处理锰结核的新型还原剂BR法、三相氧化法。
The exploring processes of using BR as a novel reductant and 3-phases oxidation method were introduced.
研究光、热、酸、碱、金属离子、氧化剂和还原剂对叶黄素酯和叶黄素稳定性的影响。
Stabilities of lutein and its esters against light, heat, acid, alkali, metal ions, oxidant and reductant were studied.
结果表明温度、碱性条件、氧化剂、还原剂、食品添加剂对粟米黄色素的稳定性无影响。
The results show that temperature, basicity, oxidant, reductant, and food additives have no or less effects on stability of the Setaria Italica yellow pigment.
维生素b12可被氧化剂和还原剂、醛类抗坏血酸、二价铁盐、香草醛和阿拉伯树胶破坏。
Vitamin B12 is destroyed by oxidizing and reducing agents, by aldehydes, ascorbic acid, ferrous salts, vanillin and acacia.
二氧化硫作还原剂,用碳酸铵溶液可实现从钴壳中选择性浸出镍、钴和铜。
Selective leaching of nickel, cobalt and copper from cobalt crusts was attained by using ammonium carbonate solution and sulfur dioxide gas as a reductant.
采用选择性氧化剂和还原剂对俄罗斯直馏柴油中的硫醚类硫化物和噻吩类硫化物分别进行分离和富集,得到两者的浓缩液。
Sulfur compounds in Russian atmospheric gas oil were separated into thiophene and thioether compounds by the oxidation-reduction method using selective oxidant and reducing agent.
结果表明番茄红素对热、碱、氧化剂、还原剂等较稳定,但对光十分不稳定。
The results showed that is is stable to heating, alkali, oxidant and reducing agent, however, it is very sensitive to light.
为减少二氧化硫其中氨作为还原剂使用的方法。
A method for reducing sulfur dioxide wherein ammonia is used as the reducing agent.
其他不能与还原剂一起使用的物质还包括:硝酸铵,过氧化氢,高氯酸钾,硝酸钠。
Other compounds not compatible with reducing agents include ammonium nitrate, hydroperoxide, potassium perchlorate, sodium nitrate.
一种把电子给另一种物质的化学物质,还原剂相对的是氧化剂。
Reducing agent, a chemical substance that gives electrons to another substance. A reducing agent is in contrast to an oxidizing agent.
氧化还原反应在基底的表面上还原剂离子和镀离子之间发 生,并产生被氧化离子。
The redox reaction occurs at the surface of the substrate between a reducing agent ion and a plating ion and produces an oxidized ion.
当接触到诸如氯气的强氧化剂时,这些金属薄膜上的电流会加强,而当接触到还原剂时则会产生相反的作用—电流会减弱。
When exposed to most oxidizing agents, such as chlorine, these metal films show an increase in electrical current, while reducing agents have the opposite effect-a decrease of electrical current.
边界层的特征在于被氧化离子的浓度梯度,还原剂离子的扩散通过边界层控制了氧化还原反应。
The boundary layer is characterized by a concentration gradient of the oxidized ion. Diffusion of the reducing agent ion through the boundary layer controls the REDOX reaction.
DR 5000氧化还原电位控制器是与DP5000功能类似,但是,它是旨在控制的氧化和还原剂计量泵。
The DR5000 ORP Controller is very similar to the DP5000 described above, however, it is designed to control LMI Metering Pumps for the addition of oxidizing and reducing agents.
研究了氧化剂、还原剂以及温度和放置时间对环氧丙烯酸酯胶粘剂性能的影响。
The effect of the oxidant, reductant, temperature and the time of placement of felted sample on the performance of the adhesive were investigated.
还原剂使所述硫酸钙转化为氧化钙,然后通过使用吹灰器或声波喇叭再夹带在烟道气气流中而除去。
A reducing agent converts the calcium sulfate to calcium oxide, which is then removed, by reintrainment into the flue gas steam using soot blowers or sonic horns.
配平氧化还原反应方程式的原则是:还原剂氧化数升高的数值等于氧化剂氧化数降低的数值。
On the basis of the changed value of oxidized elements and atoms in the oxido-reducing reaction, relative coefficient is adopted to make it easy to equalize square equation.
氧化剂、还原剂和防腐剂对番茄红素的稳定性影响非常小 ,抗氧化剂能延缓番茄红素的损失 ;
Oxidant, reducing agent and preservative. little affects the stability of lycopene, but antioxidant delays the loss of lycopene.
配平氧化还原反应方程式的原则是:还原剂氧化数升高的数值等于氧化剂氧化数降低的数值。
This paper introduces the method of applying valence in balancing inorganic and organic oxidation-reduction reaction equation.
该色素有一定的耐热性,不耐光;对氧化剂、还原剂均较敏感。
The pigment has a certain heat-resistant, non-light-fastness on oxidant, reducing agent than sensitive.
与还原剂作用无剧烈反应发生,表明该货物无氧化剂危险性。
The substance does not react vigorously with reducing agent, so it does not belong to oxidizing substances.
磁铁矿和赤铁矿之间的相互转变一直被认为是一个氧化还原反应的结果,反应的发生与一定的氧化剂或还原剂密切相关。
The transformation of magnetite and hematite in nature has generally been considered as a result of a REDOX reaction and linked to a specific oxidant or reductant.
较好的是,用氢气或有机还原剂并在适当温度下进行反应从而将钼原子还原至基本上不含任何氧化钼。
Preferably the reaction is performed with hydrogen or an organic reducing agent and at a temperature such that the molybdenum atoms are reduced to eliminate substantially all molybdenum oxide species.
较好的是,用氢气或有机还原剂并在适当温度下进行反应从而将钼原子还原至基本上不含任何氧化钼。
Preferably the reaction is performed with hydrogen or an organic reducing agent and at a temperature such that the molybdenum atoms are reduced to eliminate substantially all molybdenum oxide species.
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