查询词典 acid-carbonate

These results indicate that cabbage phenolic extract and single phenolic acids,i.e.Ferulic acid,Sinapinic acid and Gallic acid,etc.

研究表明，卷心菜提取物以及单个酚酸（儿茶素、阿魏酸和香豆酸）可以抑制〓、〓—7，8—二氢二醇和四氯化碳在肝微粒体作用下的代谢，降低主要代谢产物〓—7，8—二氢二醇、〓—7，8—二氢二醇—9，10一环氧化物和丙二醛的生成量。

Acid is formed under acidic conditions, it has antibiotic action, weaker than sorbic acid and stronger than acetic acid.

在酸性条件下产生丙酸，具有抗菌作用，比山梨酸弱，比乙酸强。

To develop a solid phase extraction- high performance liquid chromatography method for determination of dehydroacetic acid,benzoic acid,sorbic acid in cake and pastry.

建立了固相萃取-高效液相色谱法测定糕点中的脱氢乙酸、苯甲酸、山梨酸的方法。

The glycyrrhizic acid antigen is prepared through the process including following steps: dissolving glycyrrhizic acid in N, N-dimethyl formamide, dioxane or dimethyl sulfoxide, heliophobically adding N-hydroxy succinimide, reacting with dicyclohexylcarbodiimide at 0-10 deg.c for 2-5 hr; and reacting with carrier protein at normal temperature for 4-6 hr to obtain glycyrrhizic acid antigen.

本发明所提供的甘草酸抗体，是用甘草酸抗原免疫动物，然后从被免疫动物的血清中分离得到的；所述甘草酸抗原按如下过程制备：先将甘草酸溶解在N，N-二甲基甲酰胺、二氧六环或二甲基亚砜中，避光加入N-羟基琥珀酰亚胺，然后在0-10℃条件下与二环己基碳二亚胺反应2-5小时；接着与载体蛋白常温反应4-6小时，得到甘草酸抗原。

A good linear relationship could be obtained in the concentrations ranged from 1.6 to 175 mg/L for sulfamic acid and from 3.2 to 175 mg/L for DL-malic acid. The detection limits of each acid were 0.4 mg/L and 0.8 mg/L, respectively.

两者的线性范围分别为1.6~175mg/L和3.2~175mg/L；检出限分别为0.4mg/L和0.8mg/L；相对标准偏差分别小于1.1%和0.9%(n=9)；氨基磺酸的加标回收率在97%~103%之间，DL-苹果酸的加标回收率在93%~105%之间。

Butyl p-hydroxybenzoate was synthesized from p-hydroxybenzoic acid and butanol with sulfoacid resin as catalyst. The optimum conditions were as follow: ratio of n-butanol, p-hydroxybenzoic acid and sulfonic acid resin was 0.25 mol ∶ 0.05 mol ∶ 1.5 g, refluxing for 5 h using water separator at the reflow reaction temperature.

摘 要：以对羟基苯甲酸和丁醇为原料，用磺酸树脂作催化剂，催化合成了尼泊金丁酯，优化反应条件为：n∶ n=5 ∶ 1，催化剂磺酸树脂的用量为对羟基苯甲酸质量的21%，反应温度为回流温度，反应时间为5 h。

Thiobarbituric acid was synthesized by sulfourea and diethyl malonate in sodium alcohol and 5-Arylidene thiobarbituric acid was prepared by the Knoevenagel condensation reaction from benzaldehyde and thiobarbituric acid.

采用丙二酸二乙酯和硫脲在乙醇钠存在下合成了硫代巴比妥酸，再分别采用固相反应和水相反应，由硫代巴比妥酸和苯甲醛经Knoevenagel缩合反应，制备了5-亚苄基硫代巴比妥酸。

Starting from the hydroxylamine (dimethyl amino ethanol, triethanolamine) and 1, 3-propane sultone, a series of hydroxyl and sulfonyl dual-functionalized zwitterionic salts were synthesized. Then dual-functionalized ionic liquids containing both hydroxyl and sulfonyl functional groups were produced successfully by zwitterionic salts and three kinds of strong acids (p-toluene sulfonic acid, trifluoromethanesulfonic acid, methanesulfonic acid) respectively. The structure of zwitterionic salts and dual-functional ionic liquids were confirmed by the 1H NMR and IR.

以羟基有机胺(N，N-二甲基乙醇胺，三乙醇胺)为原料与1，3-磺酸内酯反应合成了一系列含有羟基和磺酸基双官能团的内盐，并将所得到的内盐分别与三种强酸(对甲苯磺酸，三氟磺酸，甲磺酸)反应，成功地合成了双功能化室温离子液体，并通过红外光谱、核磁氢谱测定，证实了内盐和双功能化离子液体的结构。

The duodenal juice mainly consists of the bile acid, which is a sort of lipophilic steroid and may result in direct injuries of mucosal epithelial cells and their tight junctions. Some researches have showed that the bile acid directly damaged the chemical environment of mucosa surface and played a synergistical role in gastric mucosal lesions along with gastric acid and H.

十二指肠反流液中主要成分为胆汁酸，胆汁酸是十二指肠反流液中造成黏膜损伤的主要成分，为一种亲脂性类固醇，直接破坏黏膜上皮细胞以及细胞间的紧密连接，同时还对腔内及黏膜表面的化学环境造成直接的影响，增强胃酸、H。

Six crystalline substances were isolated from the stem and root of Syzygium buxifoli um and identified as friedelin,βsitosterol,ursolic acid,pomolic acid,oleanolic acid and βdaucosterol..

摘要从赤楠的茎和根部的乙醇提出物中，分离和鉴定了6个化学成分，分别为木栓酮，β谷甾醇，乌苏酸，19α羟基乌苏酸，齐墩果酸和胡萝卜甙。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。