乙酸

The influence of hydrolysis time、temperature、acid concentration and solid to liquid ratio on xylose、 arabinose and acetic acid concentration are assessed by single factor.

单因素法考察了水解时间、温度、酸浓度以及料液比对木糖、阿拉伯糖、乙酸浓度的影响，并用均匀设计法优化了麦糟水解条件，确定了水解的最佳工艺条件100.4mgH2SO4/g干麦糟，温度138℃，料液比1∶6，时间270min。

Results The free gastric acid and quantity of total gastiric acid was significantly reduced under action of arecoline hydrobromide.

结果氢溴酸槟榔碱可显著减少胃游离酸及总酸量，降低胃蛋白酶活性；对小鼠应激性胃溃疡、大鼠乙醇型胃溃疡、大鼠乙酸型胃溃疡等具有明显的抑制和保护作用。

Methods: Oncomelania hupensis was immersed in different concentrations of extracts from Sarcotesta of Ginkgo biloba by benzinum, acetic ether or absolute alcohol. Molluscidal effects were observed at 24,48,72,96 h, and compared with those of extracts from sarcotesta of Ginkgo biloba combined with arecoline.

将经石油醚、乙酸乙酯和无水乙醇提取的银杏外种皮提取物稀释成不同浓度，用浸杀法观察24，48，72，96 h的杀螺效果；并与槟榔碱水提物联合用药的杀螺效果进行比较。

Results: Using of handy infrared gas spectrometer, the ammonia, sulphur dioxide, acetone, butanone, ethyl acetate, chloroform, benzene, toluene, methyl alcohol, ethyl alcohol, isopropanol, and other harmful gases can be carried out quickly Online Testing. The arsine, hydrogen chloride, hydrogen cyanide, hydrogen sulfide can not be detected online.

结果：可利用便携式红外气体分析仪对氨、二氧化硫、丙酮、丁酮、乙酸乙酯、氯仿、苯、甲苯、甲醇、乙醇、异丙醇等有害气体可进行快速的在线检测，不能对砷化氢、氯化氢、氰化氢、硫化氢进行快速在线检测。

The oil was extracted from ascidian with supercritical fluid CO 2 and ethyl acetate , and the antioxidant activity of the oil was studies with OSI.

分别用乙酸乙酯和超临界CO2提取海鞘中的油脂，并对它们的氧化稳定性进行研究。

Because fatty oil extracted from ascidian contains a relative high concentration of polyunsaturated fatty acid and can be oxidized easily, it is necessary to add appropriate antioxidant in the fatty oil to prevent it from being oxidized.

研究发现，维生素E和中草药荔枝草的乙酸乙酯提取物对海鞘油脂具有很好的抗氧化作用。

Aim To synthesize methyl 2-(4-methoxyphenyl)-2-oxoacetate from the ascidian Polycarpa aurata.

目的合成从太平洋海鞘 Polycarpa aurata中提取的天然产物2-(4-甲氧基苯基)-2-氧代乙酸甲酯。

Two kinds of oil were extracted from Styela clava and Ciona intestinalis Linnaeus by supercritical fluid CO2(SCF-CO2) and ethyl acetate. The results show that the two kinds of oil extracted from ascidian all contain high levels of plural unsaturated fatty acid, which are 89.84%(SCF-CO2) and 75.78% from Styela clava, 69.77%(SCF-CO2) and 61.11% from Ciona intestinalis Linnaeus respectively. The antioxidant activities of natural components extracted from Salvia miltiorrhiza were investigated on the oil extracted from ascidian.

分别用乙酸乙酯和超临界CO2提取柄海鞘和玻璃海鞘中的油脂，得到了多不饱和脂肪酸含量很高的海鞘油脂，即柄海鞘含有89.84%（超临界CO2提取）和75.78%的多不饱和脂肪酸，玻璃海鞘含有69.77%（超临界CO2提取）和61.11%的多不饱和脂肪酸。

And Bauhinia purpurea could inhibit vibrio. And the extracts, extrated with petroleum ether from leaves of Melia azedarach L. and Bauhinia purpurea can inhibit Vibrio parahaemolyticus, too. The remainder extracts of Mangifera indica Linn.showed strong inhibition effect on Vibrio tubiashii. While the extracts of Eriobotrya japonica showed no inhibition effect.

结果 夹竹桃叶、芒果叶、苦楝叶和羊蹄甲叶4种中草药乙酸乙酯萃取部分对供试弧菌有很好的抑菌作用；苦楝叶和羊蹄甲叶石油醚萃取部分对副溶血弧菌有抑菌作用；芒果叶的水溶性部分对塔氏弧菌有很强的抑菌作用；枇杷叶提取物对4株弧菌均无抑制作用。

The reaction was carried at 50 ℃ for 5 hours, ethanol from the reaction was removed by distilling the azeotrope of ethyl acetate and ethanol to complete the reaction.

反应在50 ℃下进行5 h，以过量的乙酸乙酯与生成的乙醇共沸除掉乙醇，使反应进行完全。

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。