乳链球菌丁二酮亚种能将乳中的柠檬酸盐转化成丁二酮。
The organism Lactococcus lactis subsp, diacetilactis converts milk citrate to diacetyl.
在雌性中，通过从胆固醇中合成雄烯二酮，开始在卵巢的间膜细胞中合成雌激素。
In females, synthesis of estrogens starts in theca interna cells in the ovary, by the synthesis of androstenedione from cholesterol.
目的筛选对莪术二酮具有羟基化修饰作用的菌株。
Objective To screen the microorganism with the ability to hydroxylate curdione.
氨基酸分析表明，酶的失活是因为丁二酮修饰了精氨酸残基。
Amino acid analysis showed that the inactivation of the enzyme was due to the modification of the arginyl residue by butanedione( Table3).
乳酸菌的主要风味代谢物质包括丁二酮，乙醛以及各种氨基酸。
The major flavor substances Lactic acid bacteria produced include the buttermilk aroma butanedione, the yoghurt flavor acetaldehyde and the amino acid.
噻唑烷二酮治疗非酒精性脂肪肝炎：继续，停止还是小心前行？
Thiazolidinedione therapy for nonalcoholic steatohepatitis: Go, stop, or proceed with caution?
介绍了近年来2,4 -吡喃二酮衍生物的合成方法的研究进展。
The progress in the method of synthesis of 2, 4-dipyrones derivatives is summarized.
丁二酮作为饲料香味剂，可增加动物食欲及采食量，提高生产效率。
Butanedione as feed scenting agent may improve appetite and capacity for eating of animal, and increase efficiency of production.
研究结果表明关键步骤为原料4-甲基-2，3-呋喃二酮的合成。
It'shows that the key step is the synthesis of 4-methyl-dihydro-furan-2, 3-dione.
这个发现进一步支持了之前的表明噻唑烷二酮与骨折相关的一项研究。
The findings support previous research that has suggested a link between these medications and bone fractures.
本发明涉及一种用于由乳酸或乳酸酯制备2,3 -戊二酮的催化剂。
The invention relates to a catalyst for preparing 2, 3-pentanedione by lactic acid or lactate.
目的：筛选出稳定的高产丁二酮突变菌株，并对其进行发酵动力学分析。
Objective: To screen a stable, high diacetyl-producing strain and analyse its fermentation kinetics.
本发明也提供合成二酮哌嗪类的方法和包含某些二酮哌嗪类的药物组合物。
The invention also provides methods of synthesizing diketopiperazines and pharmaceutical compositions comprising certain diketopiperazines.
目的研究1h异吲哚1,3 (2H)二酮新衍生物对血管新生的抑制作用。
Aim to investigate the effects of new derivatives of 1h-isoindole-1, 3 (2h) -dione on angiogenesis in chick chorioallantoic membranes (CAM).
丁二酮肟光度法可直接测定镍铬烤瓷合金中的镍，该方法简便、快速、结果可靠。
The dimethylglyoxime photometry can be used to determine the nickel content of Ni-Cr porcelain alloy, and better results were achieved in this res...
本文还将长连二酮应用到大环单酮的合成当中，提出了一种大环单酮的新合成方法。
The long-chain diketone described above was applied to the synthesis of macrocyclic ketone and a new method for macrocyclic ketone was reported.
新型取代的2,4 -噻唑烷二酮衍生物，其制备方法以及含有它们的药物组合物。
Novel substituted 2, 4-thiazolidine diketone derivatives, method for preparation thereof and pharmaceutical compositions containing the same.
利用二苯并咪唑盐与格利雅试剂的加成-水解反应，提出了长链二酮的新合成方法。
Novel synthetic methods for alkyl methyl ketone, symmetric diketone , long-chain diketone and macrocyclic ketone were provided.
本文介绍了2 -丁酮肟化法及异丁醛气相氧化法合成丁二酮，并对其影响因素进行了讨论。
In this paper the synthesis processes by 2 butanone oximation and gas phase oxidation of isobutyraldehyde were introduced. The influence factors in the process were discussed.
通过对双乙酰和2,3 -戊二酮的形成机理的分析，采取相应的工艺措施，以提高啤酒的风味。
Based on the analyses of the formation mechanism of diacetyl and 2, 3-pentanedione, corresponding technical measures can be taken to improve the flavor of beer.
报道了两类除草剂芳氧苯氧丙酸酯(APP)和环己二酮(CHD)的四种主要的除草作用机制。
Four main mechanisms of the action of aryloxyphenoxypropionate (APP) and cyclohexanedione (CHD) herbicides have been reported.
本发明提供使用某些二酮哌嗪类来治疗t -细胞介导的疾病的方法和抑制t -细胞激活的方法。
The invention provides a method of treating T-cell mediated diseases and a method of inhibiting the activation of T-cells using certain diketopiperazines.
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。
The organism Lactococcus lactis subsp, diacetilactis converts milk citrate to diacetyl, which gives a special buttery flavor to the finished product.
采用灼烧法预处理、丁二酮肟重量分析法来测定载镍碳纳米管的载镍量，获得稳定而准确的分析结果。
With pretreatment by combustion method, the nickel amount supported in carbon steel nanotube is determined by dimethylglyoxime weight method and accurate and stable analysis results are obtained.
采用灼烧法预处理、 丁二酮肟重量分析法来测定载镍碳纳米管的载镍量，获得稳定而准确的分析结果。
With pretreatment by combustion method, the nickel amount supported in carbon steel nanotube is determined by dimethylglyoxime weight method and accurate and stable analysis results are obtained.
本发明公开了一种抗流感病毒前体药，是有关1，3-吡嗪并恶 嗪-2，4二酮的衍生物，其化学结构式为；
The invention discloses an anti-influenza virus prodrug which is a derivative related to 1, 3-pyrazine oxazine-2, 4 diketone with a chemical structural formula (I);
本发明的合成方法简便直接，从外消旋的螺环二酮出发得到螺环骨架具有不同绝对构型的光 学纯的手性配体。
The synthetic method is simple and convenient and direct; and the spiral ring skeleton obtained from spiro-diketone has optical pure chiral ligand with different absolute configurations.
用1%的氢氧化钠水溶液处理带有芳酰氧基的1,3 -丙二酮衍生物可以直接得到A环带有羟基的黄酮化合物。
Treatment of 1, 3-diketones containing benzoyloxy group in 1% aqueous sodium hydroxide can afford directly the corresponding ring-A hydroxylated flavone.
结果：茚二酮对30天以内的汗液手印的显出率能达到75%以上，对30天以内的纯鸡蛋白手印的显出率能达到95%。
Results:Indanedione can achieve more than 75% to the showing rate of fingerprint of sweat on paper within 30 days, and the showing rate to the fingerprint of egg albumen 30 days can be upto 95%.
我们已观察到其他非水溶性化合物（如海藻酸钙、丁二酮肟、碳酸锌、碳酸钡及1-氨基蒽醌）也有类似的保护和生存能力。
We have observed similar protection and viability with other water-insoluble compounds such as calciumalginate, dimethylglyoxime, zinc carbonate , barium carbonate , and 1-aminoanthraquinone.
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