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METHODS The antioxidant of 75% ethanolic extract and organic solvent extracts, water extracts and polysaccharids from Acanthus ilicifolins L. was detected by Flow-injection chemiluminescence, to evaluate the ability of scavenge H2O2.
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方法采用流动注射化学发光法,研究该植物75%乙醇提取物及其有机溶剂萃取分离部分、水提取物及多糖对过氧化氢(H2O2)的清除作用。 |
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METHODS The components of emodin, resveratrol and polydatin were used as the marker, the optimum uniform-design was used to optimize the extraction procedure.
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方法:以虎杖中主要有效成分大黄素,白藜芦醇,白藜芦醇苷以及浸膏得率为指标,以均匀设计实验考察了乙醇浓度、溶媒量、提取时间、提取次数等对效果的影响。 |
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METHODS The content of β-glucan determined by phenol-sulfuric acid method, Congo red method, two enzymes method and modified two enzymes method, respectively and compare these four methods.
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方法分别采用苯酚-硫酸法、刚果红法、双酶法和改良双酶法测定β-葡聚糖含量,并比较结果。 |
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METHODS The essential oil was extracted by steam distillation and analyzed by GC-MS technique.
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方法用水蒸气蒸馏法提取白鲜皮挥发油并用气相色谱-质谱技术分析。 |
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METHODS The original plant identification, morphological, microscopic indentification and thin layer chromatography (TLC) were adopted.
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方法采用原植物、性状、显微、薄层鉴定等方法。 |
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METHODS The title compound was synthesized via 2 steps starting from phenylboronic acid and ethyl p-bromophenyalacetate.
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方法以苯硼酸和对溴苯乙酸乙酯为起始原料,经偶联、皂化二步反应得目标化合物。 |
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METHODS Three-step extract procedures were used and the solanesol contents were measured by Coulometric titration method.
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方法采用渗滤、析晶、重结晶三步法提取分离,库仑滴定法测定含量。 |
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METHODS To investigate the suspending effect of the following hydrophilic polymer: HPMC, CMC-Na, PVP K90, Xanthan gum and MC.
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方法考察常用的羟丙基甲基纤维素、羧甲基纤维素钠、聚维酮、黄原胶、甲基纤维素等辅料对干混悬剂的影响。 |
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METHODS To screen extracts of plants at random with CPE.
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方法采用CPE法对多种植物提取物进行随机筛选。 |
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METHODS Using assisted microwave irradiation to synthesize scopoletin.
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方法利用微波合成东莨菪素。 |
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METHODS Using literature textual criticism, macroscopic and physical and chemical identification methods to identify Halloysitum rubrum.
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方法采用文献考证、性状鉴别和理化鉴别。 |