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- Keywords nickel;diacetyl dioxime;gravimetric method; 镍;丁二酮肟;重量法;
- diacetyl dioxime 丁二酮肟
- 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。
- 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 assess the diagnostic value of ~(99m)Tc-sestamibi (~(99m)Tc-MIBI)combined with ~(99m)Tc labeled 4,9-diaza-3,3,10,10-tetramethyldodecan-2,11-diane dioxime (~(99m)Tc-HL91) hypoxia imaging in primary lung cancer. 目的探讨~(99m)Tc-甲氧基异丁基异腈(~(99m)Tc-MIBI)肺亲肿瘤显像联合~(99m)Tc-4,9-二氮- 3,3,10,10-四甲基十二烷-2,11-二酮肟(~(99m)Tc-HL91)乏氧显像对原发性肺癌的诊断效能。
- Objective To establish a new scintigraphic method of 201 Tl and 99 Tc m 4,9 diaza 3,3,10,10 tetramethyldodecan 2,11 dione dioxime (HL91) dual isotope imaging for assessing the myocardial perfusion and hypoxia simultaneously. 目的 用2 0 1 Tl与99Tcm 4 ,9 二氮 3,3,10 ,10 四甲基十二烷 2 ,11 二酮肟(HL91)同时评价心脏病患者心肌灌注与乏氧。
- 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。
- Objective To study and compare the diagnostic value of(~(99)Tc~m)-4,9-diaza-3,3,10,10-tetramethyldodecan-2,11-dione dioxime(HL91) hypoxia imaging and(~(18)F)-fluorodeoxyglucose(FDG) dual-head coincidence(DHC) imaging in primary breast cancer. 目的对比研究99Tcm-HL91显像和18F-FDG显像诊断乳腺癌的临床价值。
- The organism Lactococcus lactis subsp, diacetilactis converts milk citrate to diacetyl, which gives a special buttery flavor to the finished product. 乳链球菌丁二酮亚种能将乳中的柠檬酸盐转化成丁二酮,该物质会使终产品具有一种特殊的奶油香味。
- In this study，free hydroxyamine reacted with diethyl oxalate to produce diethoxyethanedialdioxime．By the hydrolysis of diethoxyethanedial dioxime，we obtained dihydroxrethanedial dioxime. 用游离的羟胺与草酸二乙酯反应制得二乙氧基乙二肟，水解得到二羟基乙二肟。
