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And the concentration of the additive, acetonitrile would thwart the

添加物,乙腈的浓度对於嵌入反应性有很大的牵制性。

According to the standard of DOH, the maxium residual level of isopropanol in hop extract is 2.2 %.

我国卫生署食品添加物之标准,於啤酒花抽出物中之残留限量应小於2.2 %。

Owing to the abroad application of Candida rugosa lipase in the resolution of racemic aminoacides, the prepared lipase was used in the resolution of phenylglycine and tert-leucine. Through the optimization of the reaction conditions, such as reaction substrate, pH, temperature, ion strength and additives, enantiomeric excesses for phenylglycine and tert-leucine reached 96% and 90.1%, respectively, enantiomeric ratio came up to 28. 9 and 15. 4, respectively.

鉴于该酶广泛应用于手性化合物的拆分研究,本论文中选用了两种手性氨基酸作为拆分对象,通过对反应体系中一系列条件的优化,包括底物、pH、温度、离子强度以及添加物的使用,苯甘氨酸和叔亮氨酸的对映体过量值分别达到96%和90.1%,对映催选择率分别达到28.9和15.4。

This article developed a series of work on the model reactant.

围绕这一模型底物,从溶剂、反应时间以及反应添加物等几个方面对PET环合反应的条件进行了优化,得到了反应的最优化条件。

The results showed that inoculum, initial pH, incubated temperature and additive had great effects on Pythium.

结果表明,接种量、起始pH值、温度、添加物对腐霉菌丝形态影响较大,接种量3%~10%,培养温度25~30℃,起始pH4及pH6.5~9,添加植物油能使菌丝保持直径小于5mm的分散小球状态。

The apparatus used for the reduction and reoxidation of Fe3O4-Mo, Fe3O4-Al, Fe3O4-Cr, Fe3O4-W and Fe3O4-none samples was a value system of the performance of hydrogen storage with a fixed bed of the samples at the center of a quartz-made tubular reactor.

以金属Mo,Al,Cr,W可溶盐为添加物,通过共沉淀法由FeCl3和(NH4)2Fe(SO4)2·6H2O的水溶液制备了单金属添加的Fe3O4改性储氢材料。

Surivival rate of plantlets could reach more than 95%with bulblets diameter≥1 cm when transplanted to pearlite/soil(3:1).The experiment about actors affecting rapid propagation system of bulblets in vitro was carried out by MS medium supplemented with accretions.

培养基添加物对百合快繁体系影响的研究结果表明:培养基中添加30g/L蔗糖和3mg/L多效唑分别为促进&索邦&和&西伯利亚&生长的最佳培养基。

Can improve the survival ratio of seeding. Culturing in hormone media can make meristem tip survive once time, and the result is better than two-time-cultivation.3、The meristem tip with two phyllomes(0.3-0.4mm in size)were found to suitable for virus-free seeding culture that were cut from aseptic seeding, which led to higher survival and virus-free ratio, up to 72.1%and 54.2%.

在培养基中添加椰汁、香蕉汁等有机添加物可以明显提高成苗率。3、采用二次剥离茎尖的方法,从无菌试管苗上切取带2个叶原基(大小0.3-0.4mm)茎尖分生组织培养,成苗率为72.1%,脱毒率为54.2%。

Through study on the additive composition of saccharides, starch, colloid, water carrying agent and emulsifier, the best additive composition are: fucose 6%, potato starch 10%, konjac gum 0.6%, sodium polyacrylate 0.6%, compound emulsifier 0.5%.

对糖类、淀粉、胶体、持水剂和乳化剂等添加剂进行了单因素研究,得出单因素条件下各添加剂的适宜添加物和添加量为海藻糖6%、马铃薯淀粉10%、魔芋胶0.6%、聚丙烯酸钠0.6%、复合乳化剂0.5%。

Microorganisms can be used directly as a food source or as a supplement to other foods and are then called single-cell protein .

微生物可直接作为食物来源,或作为一种添加到其它食物中的添加物,并被称为单细胞蛋白。

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