cinnamic acid
[有化] 肉桂酸;苯丙烯酸
2025-09-06 18:52 浏览次数 6
[有化] 肉桂酸;苯丙烯酸
1. a white crystalline odorless acid C9H8O2 found especially in cinnamon oil and storax
the relationship between the configuration and the effect of cinnamic acid compounds is discussed in this paper.
本文通过研究肉桂酸及其衍生物对常见几种菌的抑菌活性,阐明了它们之间的构效关系。
objective: to compare the diversity of contents of cinnamic acid in rhizoma typhonii before and after being processed.
目的:比较禹白附炮制前后桂皮酸含量的变化。
tungstogermanic heteropoly acid was used as the catalyst for the esterification of cinnamic acid with iso amyl alcohol in liquid phase.
以钨锗杂多酸为催化剂,对肉桂酸与异戊醇的液相酯化反应进行了研究。
benzoic acid and cinnamic acid significantly influenced cell protective enzymes of watermelon seeding root, and the effects are distinct to different enzymes and concentrations.
苯甲酸、肉桂酸处理可影响西瓜根细胞保护酶活性,但其作用方式、作用强度随处理浓度及酶的种类而异。
nowadays several kinds of natural bitterness inhibitors have been discovered including certain cinnamic acid derivatives, adenosine monophosphate, phosphatidic acid, etc.
目前已发现多种天然的苦味抑制剂,如苯乙烯酸衍生物、单磷酸腺苷、磷脂酸等。
butyl cinnamate was synthesized from cinnamic acid and butyl alcohol using tungstosilicic acid as catalyst.
以钨硅杂多酸为催化剂,通过肉桂酸和正丁醇反应合成肉桂酸正丁酯。
under the optimum condition the yield of cinnamic acid was 67.17%, which was higher than the yield (40-50%) obtained under traditional heating method.
在此条件下,肉桂酸的产率能达到67.17%,高于传统加热法的产率(40-50%)。
conclusion: cinnamic acid in rhizoma typhonii can be separated completely under the condition of rp-hplc. precision and reproduction of the method is preferable.
结论:禹白附中桂皮酸在rp-hplc条件下分离完全,精密度和重现性较好。
results: there were great difference of the contents of cinnamic acid in various batch. the contents degraded after had been processed.
结果:不同批次的禹白附中桂皮酸的含量差异较大,炮制后含量降低。
in the cucumber seedling-soil system, most of applied cinnamic acid was mainly accumulated in soil.
而在黄瓜植株-土壤系统内,苯丙烯酸主要在土壤中积累。
this study is intended to investigate the anticancer effects of the low toxic flavorings cinnamic acid on pgcl3 human lung cancer cell subine.
本研究的目的是探讨低毒性的食品调味剂桂皮酸对pgcl3人肺癌细胞的抑制作用。
the synthesis of methyl cinnamate was performed by esterification of cinnamic acid and methyl alcohol in catalysis of potassium bisulfate under microwave irradiation.
采用微波辐射技术,以自制硫酸氢钾为催化剂,由肉桂酸和甲醇直接酯化合成肉桂酸甲酯。
methods the content of cinnamic acid in homogenized liver was measured by the reversed phase hplc to analyze the effects of inductors and inhibitors on metabolism of cinnamic acid.
方法应用高效液相色谱法检测大鼠肝匀浆温孵液中剩余肉桂酸的含量,分析各诱导和抑制剂对肉桂酸代谢的影响。
the bark contains more cinnamaldehyde and less cinnamic acid than xylem.
桂枝皮部中桂皮醛的含量较高,木质部中肉桂酸的含量较高。
cinnamic acid was synthesized from benzaldehyde and acetic anhydride using solid base k2co3 /ch3cook as catalyst. synthesis conditions were discussed in orthogonal experiment method.
用k2co3/ch3cook混合固体堿催化苯甲醛-醋酐合成肉桂酸,用正交实验探讨了最佳合成条件。
with the concentration increasing, the relative conductance rate continuously be raised, and the increasing degree of benzoic acid treated was more than cinnamic acid treated.
随着苯甲酸、肉桂酸处理浓度的提高,西瓜幼苗根系的相对电导率不断提高,且苯甲酸的作用大于肉桂酸。
the relative retention time and relative peak area of every characteristic principle were calculated by cinnamic acid as reference peak.
以肉桂酸为参考峰,计算各特征成分相对保留时间比和相对峰面积比。
technology optimization of cinnamic acid synthesized by knoevenagal reaction using organic alkali catalyst;
比较以硫酸盐和阳离子交换树脂分别为催化剂合成肉桂酸酯。
it was found from orthogonal experiment that the recombination of sodium benzoate, ammonium benzoate, cinnamic acid and sodium tungstate had good synergistic reaction. based on the orthogonal …
通过正交试验发现:苯甲酸钠、苯甲酸铵、肉桂酸与钨酸钠的复配使用,表现出很好的协同作用,从而得到了一种新的环保、高效的用于di材的气相缓蚀剂配方。
by using cation ion exchange resins as catalyst as cinnamic acid reacting with methanol, ethanol, n-propanol and n-butanol, some cinnamates were prepared.
以大孔阳树脂为催化剂,将肉桂酸与甲醇、乙醇、正丙醇、正丁醇反应,制备了相应的肉桂酸酯。
the influence of different processing methods to the content of harpagoside and cinnamic acid in radix crophalariae processed by different methods were determined by hplc.
采用hplc法对不同软化方法、微泡时间、蒸制时间的玄参进行测定,考察了不同炮制工艺对玄参中哈巴俄苷和肉桂酸含量的影响。
ethyl cinnamate was synthesized by esterification of cinnamic acid with ethanol in the presence of stannic chloride pentahydrate catalyst.
在五水四氯化锡存在下,肉桂酸和乙醇发生酯化反应合成肉桂酸乙酯。