醋化

The optimal temperature was 38℃, optimal rotating speed was 200 rmin^(-1), the optimal ratio of oil to water was 1:1, the optimal amount of lipase was 150 U^(-1), and the optimum time for concentrating PUFAs in glyceride was 24 h.

固定化脂肪酶富集鱼油中ω-3多不饱和脂肪酸甘油醋的最适条件是：温度38℃、油水比为1：1、加酶量为150U^(-1)、反应转速为200rmin^(-1)、最佳富集时间为24h。

Aim To prepare lower degree of substituted starch acetate with cassava starch as material, acetic anhydride as acetylation reagent, sodium hydroxide as catalyst and sodium sulfate as gelatinization inhibiter.

目的 以木薯淀粉为原料，醋酸酐为乙酰化试剂，NaOH为催化剂，Na2SO4为膨胀抑制剂，制备了低取代度木薯淀粉醋酸酯。

Widely used in: food, cakes and biscuits, all types of biscuits, cakes, fried food, puffed food, rice cakes, rice cakes, snack foods, soy products, hot films, hot strings, spicy food, chicken row, steak, lamb chops, cooked meat products, flour products, instant sauce packets, noodles, mustard, pickles products, pickled vegetables, pickled products, spices, sesame oil, sesame oil, peanut oil,÷, all kinds of edible oil, soy sauce, vinegar, Hot pot material, chili oil, spicy food, seafood, rice wine, beer, wine, soft drinks, canned food, aquatic products, health food, cream, senior feed, export-grade feed, plaster, medicine production; Products are the above-mentioned categories the best tune color agent, hyperchromic agent or coloring agent.

广泛适用于：食品、酥性饼干、各类饼干、糕点、油炸食品、膨化食品、米饼、米酥、小食品、豆制品、辣片、辣串、辣味食品、鸡排、牛排、羊排、熟肉制品、面制品、方便面酱包、面条、榨菜、酱菜制品、泡菜、腌制品、调味品、香油、芝麻油、花生油、调和油、各种食用油、酱油，醋、火锅料、辣椒油、麻辣食品、海产品、黄酒、啤酒、葡萄酒、饮料、罐头、水产品、保健食品、奶油、高级饲料、出口级饲料、膏药、医药的生产；是上述各类产品最理想的调色剂、增色剂或着色剂。

The ammonia was evaporated under decreasing pressure, and the precipitate was filtered off and the liquid was poured into hot saturated picric acid solution to get picrate with a yield of 85.0%. The optimum process starting from imidazole-4,5-dicarboxylic acid was: imidazole-4,5-dicarboxylic acid in acetic anhydride was refluxed to get imidazole-4-carboxylic acid, and the product was esterification in ethanol with a catalyzer of concentrated sulfuric acid to get ethyl imidazole-4-carboxylate, at last the compound above was reduced by LiAlH4 in ether at room temperature to get the target compound, the total yield of this route was 49.6%.

以4，5-二羧酸咪唑为原料的较佳工艺：1 脱羧反应：4，5-二羧酸咪唑40g，醋酐1200ml，回流10h，过滤并将滤液浓缩至干，所得固体加至50%的乙醇溶液回流，过滤并将滤液自然冷却过夜，过滤得固体；2 酯化反应：4(5)-羧酸咪唑50g，乙醇1000ml和浓硫酸60ml，加热回流2h，5%浓度NaOH溶液调节至pH＝8，减压浓缩至干，加入少量水回流，自然冷却过夜并过滤得固体；3 还原反应：LiAlH410g，乙醚300ml和4(5)-羧酸咪唑乙酯28g，常温反应1.5h，小心滴加25ml水后过滤，滤渣溶于300ml甲醇中并过滤，收集所得乙醚和甲醇滤液浓缩至干，将所得固体溶于300ml乙醇中加热回流，后将溶液浓缩至约30ml，冷却并过滤得固体，该路线总收率为49.6%。

Based on the problem of various types of catalyst and according to the features of carbonylation catalysts reactions, our team has been designed a series of new metal complexes of benimidazoles, which can be used for carbonylation catalyst of industry. Seven new benzimidazole derivatives were prepared by the o-phenylenediamine、oxalic acid、glycolic acid、monomethyl monopotassium malonate、ethyl cyanoacetate、succinic anhydride. The structures of them were confirmed by IR、Elemental analsis. The crystal structures of d and e were determined by X-ray single crystal diffraction of Germanic Bruker Smart APEX II CCD. The catalysis of them was tested by carbonylation reactions.

本文设计以邻苯二胺和草酸、羟基乙酸、丙二酸单甲酯、氰基乙酸乙酯、丁二酸单甲酯为原料采用PPA催化和无机酸催化法，合成了4种苯并咪唑-2-羧酸衍生物并进行了表征；培养了2个化合物d、e的晶体并测定和讨论了晶体结构；制备了3种未见报道的苯并咪唑金属配合物，对配合物在羰基化法制醋酐-醋酸反应的催化作用进行了初步试验。

In this research, we used Trifluoroacetic anhydride as a derivatizing agent to esterify the trace glycerol in biodiesel, followed by the determination of trace glycerol using microwave assisted headspace SPME extraction technique combined with GC-ECD.

本研究利用三氟醋酸酐与生质柴油中的微量甘油进行酯化反应，反应后的衍生物以本实验室开发的微波辅助顶空固相微萃取装置采样，并以气相层析仪搭配电子捕捉侦测器作分析。

Part of Traditional Chinese medicine crush and refine , Part of Traditional Chinese medicine fluidify, add vinegar and outside apply on skin of kidney area, use medicine leading-in instrument's target model enter human body's kidney area.

将部分中药粉碎微细化处理，将部分中药液化处理，混合后加醋外敷在肾区皮肤上，用药物导入仪肾区靶点式导入人体。

Observe the result of treatment. Method: Part of traditional Chinese medicine crush and refine ,part of traditional Chinese medicine fluidify, powder and liquid mix bagging add vinegar and outside apply on skin of kidney area, use medicine leading-in instrument's target model enter human body's kidney area.

将部分中药粉碎微细化处理，将另部分中药液化处理，粉液混合装袋醋浸后外敷在肾区皮肤上，用药物导入仪肾区靶点式导入人体。

Methods: Part of Traditional Chinese medicine crush and refine , another part of Traditional Chinese medicine fluidify, after power and liquid mixed and put in bag, add vinegar and outside apply on skin of renal region, use medicine leading-in instrument's target model enter human body's renal region.

将部分中药粉碎微细化处理，将另部分中药液化处理，粉液混合装袋醋浸后外敷在肾区皮肤上，用药物导入仪肾区靶点式导入人体。

Part of Traditional Chinese medicine crush and refine , Part of Traditional Chinese medicine fluidify,power and liquid mixed then put in one bag,add vinegar and outside apply on skin of kidney area, use medicine leading-in instrument's target model enter human body's kidney area.

将部分中药粉碎微细化处理，将另部分中药液化处理，粉液混合装袋醋浸后外敷在肾区皮肤上，用药物导入仪肾区靶点式导入人体。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。