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- Keywords urea diacetyl monoxime analysis inquiry; 尿素;二乙酰单肟;分析;探讨;
- Keywords Diacetyl monoxime;Palladium chloride;Triphenyl phosphine;Tetramethylpyrazine;Kinetics; 二乙酰一肟;钯/三苯基膦;四甲基吡嗪;动力学;
- diacetyl monoxime 二乙酰一肟
- [Methods]QC 8000 continuous flow injector was used to determine urea according to the principle that urea combined with diacetyl monoxime and aminothiourea can produce red compound and has maximal absorption peak at he wavelength of 530nm. 方法采用QC 8000连续流动注射仪,根据尿素在强酸性条件下与二乙酰一肟生成红色化合物,在530 nm波长处有最大吸收峰的原理进行测定。
- Diacetyl is an important matter affecting the flavor of beer . 双乙酰是影响啤酒风味的重要物质。
- Diacetyl is one of the important indices in beer quality management. 双乙酰是啤酒品质管理的重要指标之一。
- Diacetyl is also an important effect substance on the flavour of beer. 双乙酰也是影响啤酒风味的重要原因之一。
- The hydrosulfite in beer would cause deviation of the determination of diacetyl content in beer by EBC method. 使用邻苯二胺(EBC法)测定啤酒中双乙酰含量时,啤酒中存在的亚硫酸氢盐会影响测定结果的准确性。
- Methods: The soleus and extensor digitorum longus(EDL) muscle strips were perfused in vi(tro) and treated by 2,3-Butanedione monoxime(BDM). 方法:采用肌球蛋白ATP酶抑制剂BDM(Butanedione monoxime)灌流,观测其对离体骨骼肌肌条等长收缩功能的影响。
- We study the affection for the EBC method determination of diacetyl in beer of all kinds of coefficiant of variation and obtain valuable results. 研究各种操作条件对EBC分析法测定啤酒中双乙酰的影响，得到了较有价值的结果。
- Diacetyl(DA) is one of the most common off-flavors in beer fermentation, affects the quality of beer. 双乙酰(diacetyl)是啤酒发酵中的不良风味物质,产生令人不愉快的反应,可以缩短啤酒熟化周期,提高生产效率,对啤酒工业来说极有经济价值。
- Ethyl nitrite and 2-butanone are condensed to give diacetyl monooxime,which canbe hydrolysed to form diacetyl. 本文用亚硝酸乙酯与2-丁酮缩合制备双乙酰-肟。
- Main fermentation time including diacetyl reduction lasts 3-5 days and storage time 1-3 weeks. 主发酵时间3-5天（包括双乙酰还原），后熟时间1-3周。
- A rapid and reliable analytical method for the detection of diacetyl and other vicinal Diketones in beer was described. 该文介绍了一种快捷、可靠的测定啤酒中双乙酰含量的分析法。
- In this paper, the progress of study on the formation mechanism and metabolic control of diacetyl was reviewed briefly. 本文简要综述了啤酒生产中双乙酰的形成机制和代谢调控研究进展。
- Often used in combination with Diacetyl and certain Diketones (Hexane-,Pentanedione). 详细描述： 名称：甲基乙酰甲醇，乙偶姻;3-羟基-2-丁酮;醋嗡.
- We discuss the causees in this paper and suggest some measures to control the reversion of diacetyl value. 本文就产生这种现象的原因进行了论述,提出了几点控制双乙酰反弹的措施。
- Objective: To evaluate the effects of initial reperfusion with different concentration of 2,3 butanedione monoxime(BDM) on the mechanical function and oxygen metabolism in hearts following cold cardioplegic arrest. 目的:探讨不同浓度的2,3-丁二酮单肟(2,3 butanedione monoxime,BDM)初始复灌对停搏心脏机械功能和氧代谢恢复的影响,确定理想作用浓度并初步探讨其机制。
- Mutagenesis - selection of Saccharomyces cerevisiae which have the better ability of reducing diacetyl by protoplast mutagenization with UV. 原生质体紫外诱变筛选还原双乙酰能力强的啤酒酵母。
- Methods:24 Wistar rats were divided into four groups,namely 2,3 butanedion monoxime (BDM) pretreated group (A),bFGF positive treated group(B),normal saline group (C),and shamoperated controls (D). 方法：24 只大鼠分成内源性bFGF激活A 组、bFGF治疗B组、生理盐水对照治疗C组以及正常对照D组。
