乙酸

The decisive influencing factor of viscosity in carboxyl-methylation was cross-linking reaction. Carboxyl-methylation was the main influencing factor of solubility and swelling capacity in modification of high content amylose starch. The structure and gelatinization property of different amylose content were analyzed with an Olympus Vanox BHS-2 multi-function optic microscope, and the results were as follows. The structure of ordinary cornstarch was different from the high amylose; gelatinization temperature and pH value of starch were affected deeply by amylose content, but had little difference between the gelatinization of high content amylose starch contained 50% and 70% amylose; pH value had much more effect than temperature on the gelatinization of high content amylose cross-linked starch. Monochloroacetic acid consumption, alcohol concentration and pH value influenced the starch carboxyl-methylation. When alcohol concentration was 60%, pH value 10, monochloroacetic acid/starch mass ratio 55%, the carboxyl-methylation of high amylose cross-linked cornstarch had the best result. With the In-Vitro digestibility model and biodegradation experiment, the digestibility and biodegradability of high amylose cornstarch and its modified starch were detected.

采用Brabande粘度测定仪和Olympus Vanox BHS-2型多功能光学显微镜等分析手段对链淀粉含量50％和70％的高链玉米淀粉及其交联和交联羧甲基化淀粉的结构和性质进行了表征和分析，结果表明，普通玉米淀粉结构与含链淀粉50％和70％高链玉米淀粉结构不同；高链淀粉比普通淀粉难糊化，高链改性淀粉糊化受pH值影响较大，受温度影响较小；淀粉的冻融稳定性、透光率、溶解度、膨胀度和粘度受链淀粉的含量和改性的影响，但是，链淀粉含量超过50％时，则链淀粉含量对淀粉的膨胀度和溶解度影响不大；改性淀粉性质的影响因素中，影响粘度主要因素是交联反应，影响透明度、溶解度和膨胀度主要因素是羧甲基化改性；一氯乙酸用量、反应时乙醇浓度及碱性条件都会影响高链淀粉及其交联淀粉的羧甲基化改性效果，制备羧甲基化改性淀粉的最佳工艺是在pH值为10的60％的乙醇浓度介质中按一氯乙酸/淀粉质量比为55％进行取代反应。

Results: Diacetyl monoxime solution of acetic acid and to without acetic acid DMA color liquid, transparent tube and the Brown tube of absorbance determination, 30 min to put average drop of 6.80%, 1.30% and 1.44%, 0.98%; 60 min put average drop 19.8%, 1.92% and

结果：二乙酰一肟乙酸溶液与无乙酸的DMA显色液，其透明管与遮光管测定的吸光度，放置30 min平均下降了6.80%、1.30%与1.44%、0.98%；放置60 min平均下降了19.8%、1.92%与2.49%、1.60%。

and discussion The research results indicate that WCL has a function of resisting ulcer and accelerating healing of ulcer and it is safe to use in clinic. WCL is helpful for preventing gastric ulcer of different causes, including muriatic acid-ethanol ulcer, pylorus ligated ulcer, cold-restraint-stress ulcer, and chronic acetic acid ulcer.

胃肠乐对不同机制形成的多种溃疡：盐酸-乙醇溃疡、幽门结扎溃疡、冷束缚应激溃疡、乙酸慢性溃疡均有良好的防治作用，尤其对盐酸—乙醇、应激性溃疡作用优于洛赛克，对乙酸慢性溃疡的防治和溃疡愈合质量效果明显。

Methyl α-naphthaleneacetate was synthesized by using α-naphthaleneacetic acid and methanol as raw materials and solid superacid TiO2/SO42- as a catalyst.

以固体超强酸TiO2／SO42-为催化剂，研究了α-萘乙酸与甲醇的酯化反应，探讨了催化剂种类、用量及活化温度等反应条件，发现固体超强酸TiO2／SO42-对α-萘乙酸与甲醇的酯化反应具有较高的催化活性，并使后处理简化。

The main products are fatty acid methyl ester with an annual output of 6,000 tons, with an annual output of 1,000 tons Phytosterols, natural vitamin E oil, food and feed-grade class of natural vitamin E powder with an annual output of 1,200 tons, four with an annual output of 2,000 tons chlorobenzene quinone, crystalline acid Sodium, anhydrous sodium acetate with an annual output of 3,000 tons, and plasticizers to octyl phthalate, and other products, 30,000 tons more than the total output.

主要产品有脂肪酸甲酯年产6000吨，植物甾醇年产1000吨，天然维生素E油、食品级和饲料级天然维生素E粉年产1200吨，四氯苯醌年产2000吨，结晶乙酸钠，无水乙酸钠年产3000吨，以及增塑剂对苯二甲酸二辛酯，等系列产品，总产量30000吨以上。

Results61 peaks were separated and 16 constituents were identified, which were composed of about 96.46% of the total essential oil.ConclusionThe main constituents are allyl phenoxyacetate(80.17%), eudesma-4(14),11-diene(6.83%), 2,3-dihydro-3-methyl-3-benzofuran-methanol(2.94%), limonene(1.63%). The essential oil in Oenanthe javanica DC from Dali, Yunnan can be used in the food service industry and the cosmetic industry as spices.

水芹挥发油中的主要成分为苯氧乙酸烯丙酯（80.17%）、桉叶-4(14)，11-二烯（6.83%）、2，3-二氢-3-甲基-3-苯并呋喃甲醇（2.94%）、柠檬烯（1.63%），云南大理产水芹挥发油中萜类化合物及其衍生物含量在13%以上，苯氧乙酸烯丙酯含量高，可用作食品工业和化妆品工业的香料。

ConclusionThe main constituents are allyl phenoxyacetate(80.17%), eudesma-4(14),11-diene(6.83%), 2,3-dihydro-3-methyl-3-benzofuran-methanol(2.94%), limonene(1.63%). The essential oil in Oenanthe javanica DC from Dali, Yunnan can be used in the food service industry and the cosmetic industry as spices.

水芹挥发油中的主要成分为苯氧乙酸烯丙酯（80.17%）、桉叶-4(14)，11-二烯（6.83%）、2，3-二氢-3-甲基-3-苯并呋喃甲醇（2.94%）、柠檬烯（1.63%），云南大理产水芹挥发油中萜类化合物及其衍生物含量在13%以上，苯氧乙酸烯丙酯含量高，可用作食品工业和化妆品工业的香料。

All dates were analyzed by the principal component analysis through using the SIMCA-P 10.0 software. Result: The PCA demonstrated that the metabolome between treated group and control group had difference in rat urine sample after of 22 days administrated, for treated group 169 kinds of biomarkers were found including oxalacetic acid, malic acid, 2-ketoglutaric acid, NE, arachidonic acid, 5-HIAA and other compounds, the result was consistent with pharmacological effects of R.coptidis , such as antiinflammatory, inhibiting biosynthesis of CA biosynthesis, anti-central nerve and energy metabolism inhibition.

结果：给药22 d，黄连组与对照组大鼠尿样代谢组有较大差异，发现了169个生物标记物，其中可能的化合物为草酰乙酸、苹果酸、2-酮戊二酸、去甲肾上腺素、花生四烯酸、5-羟吲哚乙酸等物质，这与黄连抗炎、阻止儿茶酚胺的生物合成、抑制中枢神经、降低能量代谢的药理作用相一致。

Pentaerythrityl tetraacetate was synthesized from acetic acid and pentaerythrite, catalyzed by SO(superscript 2- subscript 4)/TiO2-La2O3 rare-earth solid superacid. Various factors affecting the reaction were discussed.

以稀土固体超强酸SO(上标 2-下标 4)/TiO2-La2O3为催化剂，乙酸和季戊四醇为原料合成季戊四醇四乙酸酯，并考察了影响反应的因素。

The peracetic acid can be used in the disinfection of thermolabile packaging material in the production process.

结论经过氧乙酸灭菌的塑料瓶能达到无菌要求，酸的残留量对ph值的影响不显著，生产上可用过氧乙酸灭菌法对不耐热的内包材进行灭菌。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。