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- Therefore, the ethyl acetate is the optimal extracting solvent to distill the active compounds from Helianthus tuberosus leaves. 4. 菊芋叶片乙酸乙酯提取物对四种病原真菌抑制效果最为显著,因此乙酸乙酯是菊芋叶片中抑菌活性物质的最佳提取溶剂。
- The results showed that addition of appropriate extracting solvent could increase the relative vol atility of active amyl alcohol and decrease the number of theoretical plates. 结果表明,加入合适的萃取剂可有效地提高旋光性戊醇对异戊醇的相对挥发度,减少分离所需的理论板数。
- Ethanol and formamide were determined by capillary column gas chromatography using FID detector .Water was used as extracting solvent and n-butanol was used as internal standard. 采用水作萃取溶剂,正丁醇作内标,毛细管柱气相色谱法测定伊维菌素中残留溶剂乙醇和甲酰胺的含量。
- Methyl isobutyl ketone was used to be extracting solvent .The interference of the matrix was corrected effectively and the results obtained are satisfactory. 采用甲基异丁基酮萃取富集后,消除了基体的干扰,使分析结果准确可靠。
- The intermediate was the extract of Radix Angelicae Sinensis and Rhizoma Corydalis using 80% ethanol as extracting solvent. 中间体是当归和元胡的80%25乙醇提取物,由于阿魏酸和延胡索乙素性质不同,无法在同一流动相条件下同时出峰,故分别以二者为指标峰建立2套指纹图谱。
- Through selecting extracting solvent,extracting times and alkalinizing method,Oxymatrine is extracted and purified by ion-exchanging and re-crystallization. 通过对溶剂、提取次数、碱化条件的选择,用离子交换和重结晶的方法提取纯化氧化苦参碱。
- RESULTS: The extraction rates was affected by extract solvent, extract times, Coccus- solvent ratio and extract temperature. 结果:乙醇浓度、提取次数、料液比和提取温度影响胭脂虫红酸提取效率。
- The n-pentane is one of good extraction solvents. 正戊烷是一种优良的浸出溶剂。
- The selectivity calculated shows that furfurol is an excellent extraction solvent for separating FCC slurry. 计算所得选择性表明糠醛是分离FCC油浆的有效溶剂。
- Ethanol was the best extraction solvent, and continuous reflux extraction was the most appropriate extraction method. 结果表明,乙醇为瑞香狼毒根的最佳提取溶剂,连续回流提取法为其最佳提取方法。
- The selection of extraction solvent and acidity of stripping agent, and the effect of interferencing ion were studied. 并对测定过程中有机萃取剂,反萃酸度的选择及干扰离子的影响进行了探讨。
- The results shows that extraction solvent is extremely important for carotenoid analysis of different materials a... 结果表明,材料的类型对于提取溶剂的选择极其重要,溶剂的选择不当,将造成类胡萝卜素提取得不完全。
- The extraction solvent of chemical extraction had pois on which could cause some pollution and toxicity. 化学萃取法的提取溶剂有毒,会造成一定的污染和毒害。
- Conclusion: The imperialine extraction efficiency is greatly affected by the extraction solvent. 5)的西贝素的提取效率最高。
- Selecting a more suitable extraction solvent is highlighted by oil technologists in each country. 因此,选择更适宜的浸出溶剂为各国油脂工作者所重视。
- This study gives the prime reference for the new technology of alcoholic fermentation with immobilized yeast coupling with extractive solvent. 为固定化酒精酵母乙醇发酵与溶剂萃取耦合新工艺的开发研究提供初步资料。
- Methods To determine the effect on the content of the flavonoids from the different types of extracting solvents and the solvents with different concentrations by HPLC. 方法采用高效液相色谱法,测定不同类型提取溶剂和不同浓度溶剂对黄芩中黄芩苷产率的影响。
- It was researched that the extractor, extraction solvent, chromatography material had influence upon yield of total flavonids. 考察了不同的回流装置、提取溶剂和层析材料对黄酮类化合物提取率的影响。
- Capsaicin is extracted from the powder of capsicum with microwave assisted, and acetic acid is used as the extraction solvent. 采用微波辅助提取方法,以乙酸为提取剂从辣椒粉中提取辣椒素。
- According to the total content and DI of anthocyanin in lychee, the state of anthocyanin degradation in extraction solvent is obviously observed. 荔枝果皮总花色苷及花色苷降解指数可以很好地反映出提取液中花色苷的降解情况。