查询词典 acid ester

Water,c12-20 acid peg-8 ester,octyldodecanol,propylene glycol,coco-caprylate/caprate,cetearyl isononanoate,prunus amygdalus dulcisoil,biosaccharide gum-1,phenoxyethanol,ethylhexyl methoxycinnamate,potassium cetyl phosphate,simmondsia chinensisseed oil,carbomer,glyceryl polymethacrylate,malva sylvestrisextract,glyceryl stearate,cetearyl alcohol,cetyl palmitate,cocoglycerides,c12-13 alkyl lactate,methylparaben,sorbic acid,disodium edta,sodium hydroxide,tocopheryl acetate,benzophenone-3,iris germanica root extract,retinyl palmitate,butylparaben,peg-8,propylparaben,ethylparaben,sodium hyaluronate,chlorhexidine digluconate,tocopherol,ascorbyl palmitate,citric acid,ascorbic acid

水， c12-20 acid peg-8 ester，辛基十二烷醇，丙二醇，coco-caprylate/caprate，鲸蜡硬脂醇异壬酸酯，甜杏仁油，多醣物质，苯氧乙醇，4-甲氧基肉桂酸-2-乙基己基酯，十六烷基磷酸钾，西蒙得木籽油，卡波姆，甘油聚甲基丙烯酸酯，锦葵萃取，甘油硬脂酸，棕榈醇，十六烷基棕榈酸酯，椰油脂酸甘油酯类，c12-13烷醇乳酸酯，对羟基苯甲酸甲酯，山梨酸，乙二胺四乙酸二钠，氢氧化钠，维生素E醋酸酯，二苯甲酮-3，鸢尾花萃取，维他命A酯，对羟基苯甲酸丁酯，聚乙二醇-8，羟苯丙酯，羟苯乙酯，透明质酸钠，洗必泰葡萄糖酸盐，维生素E ，维生素C棕榈酸酯，柠檬酸，抗坏血酸

Under the above optimum conditions, other trimethylolpropane fatty acid esters, such as trimethylolpropane lauric acid ester, trimethylolpropane myristic acid ester, trimethylolpropane capric acid ester and trimethylolpropane octanoic acid ester were synthesized, and their esterification rates were 80.97%, 87.03%, 80.73% and 81.24%, respectively.

在上述的最优条件下，分别合成三羟甲基丙烷月桂酸酯、三羟甲基丙烷豆蔻酸酯、三羟甲基丙烷癸酸酯、三羟甲基丙烷辛酸酯，其酯化率分别为80.97%、87.03%、80.73%和81.24%。

Water,c12-20 acid peg-8 ester,octyldodecanol,cetearyl isononanoate,butylene glycol,biosaccaride gum-1,peg-40 hydrogenated caster oil,ethylhexyl menthoxycinnamate,phenoxyethanol,potassium cetyl phosphate,macadamia ternifolia seed oil,dimethicone,carbomer,propylene glycol,glyceryl stearate,cocoglycerides,butyrospermum parkii,c12-13 alkyl lactate,methylparaben,benzophenone-3,pentadecalactone,sorbic acid,citrus aurantium dulcis oil,sodium hydroxyde,tocopheryl acetate,disodium edta,iris germanica root extract,retinyl palmitate,equisetum arvense extract,butylparaben,peg-8,propylparaben,ethylparaben,sodium hyaluronate,chlorhexidine digluconate,citrus aurantium amaraoil,tocopherol,ascorbyl palmitate,citric acid,ascorbic acid,limonene,linalool

水，c12-20 acid peg-8 ester，辛基十二烷醇，鲸蜡硬脂醇异壬酸酯，丁烯二醇，多醣物质，PEG-40氢化蓖麻油，4-甲氧基肉桂酸-2-乙基己基酯，苯氧乙醇，十六烷基磷酸钾，澳洲胡桃子油，地美司康，卡波姆，丙烯乙二醇，甘油硬脂酸，椰油脂酸甘油酯类，牛油果，c12-13烷醇乳酸酯，对羟基苯甲酸甲酯，二苯甲酮-3 ，环十五内酯，山梨酸，甜橙油，氢氧化钠，维生素E醋酸酯，乙二胺四乙酸二钠，鸢尾花萃取，维他命A酯，问荆萃取，对羟基苯甲酸丁酯，聚乙二醇- 8，羟苯丙酯，羟苯乙酯，透明质酸钠，洗必泰葡萄糖酸盐，苦橙油，维生素E ，维生素C棕榈酸酯，柠檬酸，抗坏血酸，柠檬精油，沉香醇水：几乎所有护肤品成分第一位都是水。辛基十二烷醇：界面活性剂、乳化剂、稠化剂，有一定刺激性

II. Oxidation of α,β-Unsaturated Ketones with Hypervalent Iodine Reagent Literatures reported that lead acetate-borontrifluoride etherate (LTA/BF3-Et2O) can transform α,β-unsaturated ketone to β,γ-unsaturated carboxylic acid ester through an one-step oxidative rearrangement reaction. Our research along this line indicated that hypervalent iodine reagents can also affect the same reaction.

II。 高价碘对α，β-不饱和酮之氧化研究先前已有文献指出用leadacetate-borontrifluoride etherate (LTA/BF3-Et2O)做氧化剂，可以经由一步的重组氧化反应把α，β-不饱和酮(α，β-unsaturated ketones)氧化成β，γ-不饱和碳酸酯(β，γ-unsaturated carboxylic acid esters)衍生物。

Thiol groups were good to be used in functionalizing gold nanoparticles, and ester bond formation and breakage played the major role in this research. Thioctic acid and 11-mercapto-1-undecanol were used to functionalize the gold nanoparticles and form ester bond by using the carboxylic acid group on thioctic acid and the hydroxyl group on 11-mercapto-1-undecanol. Concentrated sulfuric acid was used to be the catalyst in this reaction, and sodium hydroxide was added for the proceeding of the reverse reaction.

硫醇官能基在金奈米粒子的修饰有很好的效果，利用带有硫醇官能基之tioctic acid 与11-mercapto-1-undecanol (11-MUDO)分子修饰在金奈米粒子上，并使TA上之羧基和11-MUDO上之羟基脱水生成酯化键，浓硫酸则是反应中的催化剂，而氢氧化钠则可促使系统进行逆反应。

After 3 months storage, our result showed that (1) color a value of rose liqueur with sucrose treatment had a slower decreased than with fructose treatment,(2) the sample added with caffeic acid or ferulic acid or tea polyphenol showed no significant difference in the color, anthocyanins content, and antioxidant capacity during storage as compared to control, and (3) the total amount of volatile compounds of rose liqueur decreased gradually, however there was one ester volatile formed, hexadecanoic ethyl ester, during storage.

贮藏三个月发现，(1)以果糖勾兑者在储藏试验中，其红色度下降速度较以蔗糖处理者快，建议仍以非还原糖进行勾兑对日后酒液保存较易，且酒液最好能予以避光包装，以避免颜色品质的下降；(2)添加不同之多酚类化合物时发现，添加caffeic acid、ferulic acid和茶多酚对酒液色泽、花青素含量、以及抗氧化能力之降低速度与控制组并无显著性的差异。(3)酒液储藏三个月后，其香气高级醇均有减少之趋势；但有hexadecanoic acid， ethyl ester酯类出现。

The nautre of ester bond and sedimentary medium condition control the distribution pattern of organic acid ester in strong reductional environment and water-washed oxidized crude oils. The former features higher contents both of 9, 11-Octadecadienoic acid, methyl ester and Hexadecanoic acid, showing the non-reversible hydrolysis reaction of ester bond in condition of basicity; the later features higher contents of Hexadecanoic acid and Octadeanoic acid, and lower contents of nonsaturated and side-chain acid ester, indicating the reversible hydrolysis reaction of ester bond in acid condition.

酯键的化学性质和沉积环境中介质条件，决定了强还原咸水盐湖相和淡水湖沼相经水洗氧化次生变化的原油有机酸酯的分布特征，前者9，11-十八二烯酸甲酯与正十六烷酸为主，反映酯键在碱性条件的不可逆水解过程，后者以正十六烷酸和正十八烷酸为主，烯酸和支链酸很少，反映酯键的酸性条件的可逆性水解，烯酸经氧化向正十八烷酸，正十六烷酸转化。

Our study show that 9, 11-Octadecadienoic acid, methyl ester is the highest content of organic acid ester components in non-hydrocarbon fraction, higher content of 6-Octadecenoic acid, methyl ester reflects mainly terristrial source input, higher content of pentadecane acid, 14-methyl, methyl ester or Heptadeeanoic acid, 16-methyl, methyl ester shows mainly aquatic source input.

原油和岩石抽提物非烃中有机酸酯类化合物的有机地球化学研究报道很少，系统研究发现非烃有机酸酯中9，11-十八二烯酸甲酯含量最高，而次高峰的丰度可用作生源判识，陆源母质输入多的样品次高峰为6-十八单烯酸甲酯，水生母质供给多者次高峰为14-甲基十五烷酸甲酯或16-甲基十七烷酸甲酯。

The invention discloses a method for expressing polyhydroxy fatty acid ester and a specific project bacterial, wherein the project bacterial for expressing polyhydroxy fatty acid ester is the mutant of the polyhydroxy fatty acid ester bacterial by inhibiting or removing a or a plurality genes related to fatty acid beta oxidization metabolic pathway in the polyhydroxy fatty acid ester bacterial.

本发明公开了聚羟基脂肪酸酯的一种表达方法及其专用工程菌。该用于表达聚羟基脂肪酸酯的工程菌是抑制或敲除产聚羟基脂肪酸酯细菌中的与脂肪酸β氧化代谢途径相关的一个或多个基因后得到的产聚羟基脂肪酸酯菌突变株。

Fine chemicals to add auxiliary Series: lubricating oil pour point depressant, calcium zinc magnesium methacrylate, methyl acrylic acid lauryl ester, tetradecane methacrylate ester, methacrylic acid octadecyl ester, a acid ethylene glycol, diethylene glycol methacrylic acid ester, glycidyl methacrylate, the second reduction of three ethylene glycol dimethyl acrylate, acrylic acid lauryl ester, tetradecyl acrylate, octadecyl acrylate, acrylic acid ethylene glycol, diethylene glycol acrylate esters, glycidyl, two shrink three acrylate such as ethylene glycol.

精细化工添加助剂系列：润滑油降凝剂，甲基丙烯酸钙锌镁，甲基丙烯酸月桂酯，甲基丙烯酸十四烷酯，甲基丙烯酸十八烷基酯，甲基丙烯酸乙二醇，甲基丙烯酸二乙二醇酯，甲基丙烯酸缩水甘油酯，二缩三乙二醇二甲基丙烯酸酯，丙烯酸月桂酯，丙烯酸十四酯，丙烯酸十八酯，丙烯酸乙二醇，丙烯酸二乙二醇酯，丙烯酸缩水甘油酯，二缩三乙二醇丙烯酸酯等。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷