petroleum ether extract 中文意思是什麼

petroleum ether extract 解釋
石油醚抽提物
  • petroleum : n. 石油。 crude [raw] petroleum 原油，重油。
  • ether : n. 1. 【物理學】以太，能媒。2. 【化學】醚；乙醚。3. 〈詩〉上空，蒼天。4. 【哲學】靈氣；氣氛。
  • extract : vt 1 （用力）拔出，抽出。2 分離出，提取，蒸餾出，榨出。3 摘出（要點），引用。4 推斷出。5 【數學】...
  1. The anti - microbial activities of crude ethanol extract from aerial parts of sophora alopecuroides and its petroleum ether, chloroform, n - butanol and water fractions of sophora alopecuroides to pythium aphanidermatum, fusarium oxysporum f. sp. cucumerinum, fusarium oxysporum f. sp. lycopersici, alternaria solani, pseudomonas pachrymans and xanthomonas vesicatoria were tested by mycelial radial growth test and agar - well diffusion

    本實驗採用帶毒平板菌絲生長法和瓊脂打孔藥劑擴散法測定了苦豆子地上部分乙醇粗提物及其石油醚、氯仿、正丁醇和水層的不同極性溶劑萃取物對瓜果腐霉、黃瓜枯萎病菌、番茄枯萎病菌、番茄早疫病菌、黃瓜角斑病菌和番茄瘡痂病菌的抗菌活性。
  2. There existed self - poison phenomenon and the ri was up to - 1 during the germination of s. chamaejasme when the concentration of petroleum ether extract was 20 gdw. ml - 1. furthermore, different concentrations of ethanol extract inhibited the germination of lespedeza davurica

    瑞香狼毒的自毒作用明顯，其作用的主要成分是葉乙醇提取物，當濃度為20gdw ? 100ml ~ （ - 1 ）時，完全抑制了瑞香狼毒種子的萌發，化感效應指數達到- 1 。
  3. 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。
  4. Tobacco and tobacco products - determination of petroleum ether extract

    煙草及煙草製品.石油醚提取物的測定
  5. Results of experiments on antibacterial and antifungal activities showed that extracts of alcohol and acetic ester had remarkable bacteriostasis effects against 6 bacteria ; aqueous extract was more effective against fungi, and slight against bacteria ; petroleum ether extract had no effect against bacteria and fungi ; butylalcohol extract had different effects against bacteria, but had no effects against fungi

    抑制活性試驗結果顯示：乙醇提取物和乙酸乙酯萃取物對供試的6種細菌有較強的抑制作用；水相對供試的5種真菌有較強的抑制作用，而且對細菌有較小抑制作用；石油醚相對真菌和細菌幾乎無抑制作用；正丁醇萃取物對細菌有不同程度的抑制作用，而對真菌無抑制作用。
  6. One of the experimental results indicated that different concentrations of two extracts inhibited the radicle and embryo growth of chloris virgata. different concentration of petroleum ether extract accelerated the germination of c. virgata l. at different extension

    實驗結果表明，瑞香狼毒葉石油醚和乙醇不同濃度的兩種提取物對虎尾草種子胚根和胚芽的生長均有抑制。
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