Propionic acid and its salts are important feed preservatives.
丙酸及其盐是重要的饲料防腐剂。
Formic Acid, Acetic Acid, Propionic Acid and Ammonium Formate.
甲酸，乙酸，丙酸和甲酸铵。
Propionic Acid, Formic Acid, Acetic Acid and Ammonium Propionate.
丙酸，甲酸，乙酸和丙酸铵。
The method can be used to test the propionic acid in the antimicrobial.
可用于测定防霉剂中的丙酸含量。
Objective To determine the best synthesis condition of 3-(4-iodobenzyl)propionic acid.
目的考察3-（4-碘苯甲酰基）丙酸的最佳合成条件。
The deactivation of hydrogenation catalyst of 3 - hydroxy propionic aldehyde was studied.
对3-羟基丙醛加氢催化剂的失活原因进行了研究。
And the extraction of flavoring substances from yellow water could produce propionic acid and starter etc.
提取香味物质；发酵制备丙酸；制酒曲等。
Propionic acid as a slow transformation, there will be a gradual accumulation in the latter part of the process.
丙酸由于转化速度较慢，在后期会有一个逐渐积累的过程。
Production techniques and market of propionic aldehyde and propionic acid and propanol are introduced in this paper.
本文综述了丙醛、丙酸、丙醇的工艺技术及市场前景。
The synthetic conditions of zinc propionate with propionic acid and basic zinc carbonate as raw materials were studied.
以丙酸和碱式碳酸锌为原料，制备了食品及饲料添加剂丙酸锌。
The high yield of propionic acid in mixed acid fermentation was the main reason for the low hydrogen production capacity.
混合酸发酵的发酵产物中丙酸含量较高是产氢能力偏低的主要原因。
Benzyl propionate was synthesized by the esterification reaction of benzyl alcohol with propionic acid using potassium bisulfate.
用硫酸氢钾催化苯甲醇与丙酸的酯化反应合成了丙酸苄酯。
Using niobic acid as catalyst, cyclohexane as dehydrant, benzyl propionate was synthesized based on propionic acid and benzyl alcohol.
摘要以铌作催化剂，环己烷为带水剂，用丙酸和苯甲醇直接合成了丙酸芐酯。
Moreover, the average rate can rise and the hardness will reach the maximum along with the increasing concentration of propionic acid.
在其它条件不变的情况下，随着丙酸浓度的增加，平均镀速有所上升，而硬度先上升，达到一个最大值后开始下降。
An coupling bioprocess for in situ propionic acid recovery coupled with fermentation of vitamin B12 was established based on this technology.
将此工艺用于发酵过程中丙酸的原位吸附分离，建立了维生素b12发酵与丙酸在线分离的耦合过程。
All these drawbacks, however, could be effectively overcome in a semi batch reaction system into which propionic anhydride was continuously fed.
然而，在连续流加丙酸酐的半批式反应系统中，所有这些缺点均可有效地克服。
In addition, some organic acids with the bad breath, such as butyric acid and propionic acid, and indole, methyl indole compounds and cadaverine.
此外，一些有机酸也与口臭有关，如丁酸和丙酸，以及吲哚、甲基吲哚和尸胺等化合物。
Potassium and magnesium increased, sodium and chlorine decreased in abomasal fluid, acetic, propionic, butyric and VFA increased in abomasal fluid.
真胃液中钾与镁升高，钠与氯下降，乙酸减少，丙酸、丁酸及VFA总量升高。
With the material of propionic acid and isobutyl alcohol, the synthesis of isobutyl propionate by using solid Mo-Ni Catalyst to replace common vitriol is studied.
以丙酸和异丁醇为原料，以改性钼镍粉取代以往常用的硫酸作催化剂，进行了丙酸异丁酯的合成研究。
The esterification reaction of propionic acid with n-pentanol was studied by using novel aluminophosphate and silicoaluminophosphate molecular sieves as catalysts.
用新型磷酸铝分子筛和硅磷酸铝分子筛作催化剂，对丙酸和正戊醇液—固相酯化反应进行了研究。
A method of preparing trimethylolethane from formaldehyde and propionic aldehyde in water was introduced in the presence of the base through cross Cannizzero reaction.
介绍了以甲醛、丙醛为原料，水为反应介质，碱催化进行交叉康尼扎罗反应制备三羟甲基乙烷的方法。
Waterborne polyurethane resin is prepared by alcoholyzing oil with polyol at first, and then reacting with polyether (polyester), dimethylol propionic acid, diisocyanate.
油与多元醇经醇解反应，进而与聚醚或聚酯、 二羟甲基丙酸、 二异氰酸酯反应制得水溶性氨酯油。
In the methanogenic process, accompanied by the accumulation of propionic acid and butyric acid. (3) Strain P4-1 could degrade p-toluene sulfonate in the present of yeast.
研究中分离的菌株P4-1，能够降解对甲苯磺酸盐，并且在有酵母粉的情况下能明显提高其降解能力，在废水处理中有重要意义。
This suggests that Daidaein can increase the synthesis capacity of ruminal microbial crude protein and alter the rumen fermentation pattern, tend to propionic-type fermentation.
提示，大豆黄酮能提高瘤胃微生物蛋白的合成能力，改善瘤胃的发酵类型，使瘤胃发酵趋于丙酸型。
The refining method of the propionic acid guanidine of the invention has high refining yield and menstruum can be recovered and applied, thereby greatly reducing waste water quantity.
本发明丙酸胍的精制方法精制收率高，溶媒可回收套用，并大大减少了废水量。
Under the selected conditions of the chromatographic operation, there was the better separation efficiency between 2-(4- hydroxyphenoxy) propionic acid and impurities(such as hydroquinone, etc).
在选定的色谱操作条件下，2-（4-羟基苯氧基）丙酸与杂质对苯二酚等之间具有良好的分高效果。
Under the selected conditions of the chromatographic operation, there was the better separation efficiency between 2-(4- hydroxyphenoxy) propionic acid and impurities(such as hydroquinone, etc).
在选定的色谱操作条件下，2-（4-羟基苯氧基）丙酸与杂质对苯二酚等之间具有良好的分高效果。
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