ethyl acetate l 中文意思是什麼

ethyl acetate l 解釋

  • ethyl : n. 1. 【化學】乙基，乙烷基。2. 四乙鉛〈加在汽油中的防爆劑〉。3. 含四乙鉛的汽車燃料。
  • acetate : n. 【化學】醋酸鹽；醋酸酯；醋酸根，醋酸基；醋酸纖維素。
  • l : L-beam, L-iron 不等邊角鋼。L,￡＝ 〈拉丁語〉 libra （＝ pound）。
  1. According to the polarity, the residue was isolated with petroleum ether, chloroform, ethyl acetate, and n - buoh, respectively. the n - buoh fraction, confirmed as neuroactive component, was subjected to sephadex lh - 20 column chromatography to provide an extract fraction, as a buff powder, which could induce neurite outgrowth in rat pheochromocytoma pc12 cells in a dose - dependent manner up to 50 mg / l

    將菟絲子乾粉用75乙醇浸泡后，減壓蒸干后得到褐色漿狀物，經石油醚、氯仿、乙酸乙酯、正丁醇萃取，經柱層析后，再用葡聚糖凝膠對有效成份進一步純化，獲得了菟絲子中能誘導pc12細胞分化的活性組分。
  2. In order to separate the l - lactic acid and lactic acetate, the adsorption chromatography was utilized besides the extraction with ethyl ether. the operation conditions for resin a was initial 15 % lactic acid, ph 6. 5, temperature 30, flow velocity 2. 28 ml / min taking the condition of optimal enzymatic reaction, the amount of adsorption and natural hydrolyzation of lactic acetate into account

    綜合考慮酯酶的最適反應條件、樹脂吸附量和乳酸乙酯的自發水解情況，確定酶解底物乳酸乙酯濃度為15 ，上柱條件為； ph值為6 . 5 ，溫度為30 ，流速為2 . 28ml min 。
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