查询词典 alcohol acid

The pectin enzymolysis technology,juice debittering technology,and alcohol and acetic acid fermentation were studied. The results showed the best conditions of pectase hydrolysis are:amount of pectase 0.02%,temperature 50 ℃,pH 4.4 and time 4 h.

结果表明：果胶酶水解的最佳条件为：果胶酶添加量0.02%、温度50℃、pH4.4、时间120min；果汁脱苦最佳条件为：粒状活性炭添加量0.5%、室温搅拌60min；酒精发酵的最优条件为：接种量8%、发酵温度30℃、糖度20%、pH4.4、发酵时间4d；醋酸发酵的最优条件为：接种量10%、温度34℃、酒度8%、时间4d。

Quality wild grape wine with 11.6％ alcohol content, total acid 8.5g/L, residual sugar 3.6g/L, and steeping material 27.5g/L was produced with full－black wild grape over 90％ the amount of the raw materials and dry white wine, imported wine yeast, sugar, pectase and albumen powder as its auxilliary materials by techniques of fermentation and sprinkle etc.

摘 要：选用90％以上的全黑山葡萄为原料，干白原酒、进口葡萄酒酵母、白砂糖、果胶酶、蛋白粉为辅料，经发酵、淋酒等酿造工艺可生产出11.6度、总酸8.5g/L、残糖3.6g/L、浸出物为27.5g/L的优质山葡萄酒。

Finally, pentyl acetate and benteine could be respectively synthesized by esterification reaction in the presence of nanometer rare earth composite solid superacids (SO_4)~(2-)/ZrO_2-Gd_2O_3 and (SO_4)~(2-)/ZrO_2-Nd_2O_3. The effects of reaction time, reaction temperature, the mol ratio of acid to alcohol and the use level of catalyst on esterification yield were discussed. In the end, we obtained their optimal reaction conditions.

采用纳米稀土复合固体超强酸SO_4~(2-)/ZrO_2-Gd_2O_3，SO_4~(2-)，~/ZrO_2-Nd_2O_3分别合成了乙酸戊酯和乙酸苄酯两种香料，实验考察了反应时间、反应温度、醇酸比及催化剂的用量对酯化率的影响，并由此得出反应的最佳条件。

Third on 2 aldehyde and nucleic acid amino or with phosphatide kind (like amine of phosphatide acyl alcohol) remove reaction to also can produce similar fluorescent product.

丙二醛与核酸上的氨基或与磷脂类起反应也能产生类似的荧光产物。

" Cypress together benefit the 斯 tooks a look cup carefully, having already tooked a look an oneself's hand to say with smile, I know why:"Ising the top of the my hand is these platinum black powder reasons, these powders make the alcohol in the grape wine(note:The scientific term is called ether)have chemical reaction with the oxygen in the air, born the cause of acetic acid.

" 柏齐利阿斯仔细的看了看杯子，有看了看自己的手笑着说，我知道为什么了："是我手上这些铂黑粉末原因，这些粉末使红葡萄酒里的酒精与空气中的氧气起了化学反应，生成了醋酸的缘故。

Bromobutane was synthesized from potassium bromide and n-butyl alcohol by adding concentrated sulfuric acid in water. Various affecting factors were investigated.

以溴化钾、正丁醇为反应原料，水为溶剂，滴加浓硫酸合成溴代正丁烷。

Benzyl bromide was synthesized from potassium bromide ,a by-product from synthesis of 2-hydroxy-4-n-octyloxybenzophenone(UV-531),and benzoic alcohol in the presence of concentrated sulfuric acid.

溴化钾作为工业生产2-羟基-4-正辛氧基二苯甲酮的副产品，在浓硫酸存在的条件下，与苯甲醇进行反应合成苄基溴。

Normal propyl cinnamylate was synthesized by the esterification of normal propyl alcohol with cinnamic acid in the presence of potassium bisulfate monohydrate.

应用硫酸氢钾催化肉桂酸与正丙醇的酯化反应合成肉桂酸正丙酯。

In this paper the synthesis of propyl gallate from gallic acid and n-propyl alcohol as reactants and catalyzed by sodium bisulfate was studied; various influencing factors on the reaction were also investigated.

研究了以硫酸氢钠为催化剂，没食子酸和正丙醇为原料合成没食子酸丙酯，并考察影响反应的因素。

This is because in the thick enzyme fluid simultaneously includes many kinds of enzymatic systems, like pyruvic acid decarboxylase, alcohol dehydrogenase and so on.

这是因为粗酶液中同时含有多种酶系，如丙酮酸脱羧酶、醇脱氢酶等。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。