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Leaves. Result: Extraction temperature had effect on total flavonoids yield, and ethanol concentration had more obvious effect than extraction temperature. The more natural storage time, the less total flavonoids content, and the average descent rate was 24.74% per year. The flavonoids content from Lithocarpus polystachyus Rehd. gathered between August and October was the highest. The total flavonoids content was higher in the new leaves of Lithocarpus polystachyus Rehd.
结果：乙醇体积分数对总黄酮提取量有显著影响，提取温度对总黄酮提取量有影响；多穗柯自然存放时间越长，总黄酮含量越低，平均每年下降24.74%；不同季节采摘的多穗柯其总黄酮含量以8~10月最高；经对怀化多穗柯嫩叶和老叶中总黄酮的提取测定表明，多穗柯中嫩叶总黄酮含量最高，二年生最低。
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objective:to determine total flavonoids content in the leaves of acer saccharum.methods:we determined total flavonoids contents in leaves of acer saccharum by ultraviolet and visible spectrophotometry.results:the flavonoids content was 1.035mg/g in the leaves of acer saccharum.conclusion:the flavonoids content is rich in the leaves of acer saccharum and the leaves have pharmic value.
目的：本文对糖槭叶中的总黄酮含量进行测定。方法：采用紫外-可见分光光度法对糖槭叶中总黄酮含量进行测定。结果：糖槭叶中总黄酮含量为1.035mg/g。结论：糖槭叶中含有丰富的黄酮类化合物，具有可观的药用开发价值。
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The total flavonoids content of peanut hulls of different sources were evidently different,those peanut hulls contained more total flavonoids from Shandong province,higher maturity and raw. This suggested that attention should be paid to the choice of peanut hulls as medicine materials. 3.The optimized extraction technology conditions considering the two indices of total flavonoids andβ-sitosterol were: the peanut hulls were extracted by 95% acohole 6 times of the hulls weight refluxing for 2 hours first,and extracted by 70% acohole 4 times of the hulls weight refluxing for 2 hours at the temperature below 80℃successionally,then the concentrate was dried vacuumizedly with the additament of starch 2% of the concentrate weight after the extracts were fitrated,united and concentrated. 4.The dried extract powder possessed high hygroscopy and low fluidity,but the weight variation of capsule contents could comply with the requirement of CP if it was mixed with dextrin and granulated by sieving 40 meshes using 95% ethanol as the wetting agent,and filled into capsules after dried below 60℃.The critical relative humidity of the granules was about 63%.
不同来源的花生壳总黄酮含量有较大差异，山东产区、成熟度高的及未经炒制的花生壳总黄酮含量较高，提示作为药材时应注意选择； 3、兼顾总黄酮及β-谷甾醇的最佳提取工艺为：先以95%乙醇6倍量加热回流提取2小时，再以70%乙醇4倍量80℃以下回流提取2小时，提取液过滤、合并、浓缩，加2%淀粉60℃以下减压干燥； 4、浸膏粉吸湿性大，流动性差，但加糊精并以95%乙醇为润湿剂、过40目筛制粒，60℃以下烘干后填充胶囊，可保证装量差异符合要求；颗粒临界相对湿度约为63%。
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flavonoids：类黄酮
蓝莓所含的"类黄酮"(flavonoids)才是真正的关键,类黄酮不仅可以疏通血管,提高血流量,同时可以降低血压. 食用蓝莓短期内可以增进认知功能的表现,长期则可以让头脑更健康,经常食用有助提升记忆力.
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flavonoids：类黄酮素
位於美国加州大学柏克莱分校,雷派克(Lester Packer)博士所领导的派克实验室,专门研究抗氧化物,在这个实验室里,雷派克不仅发现维他命E、C以及类黄酮素(Flavonoids)、Alpha-硫辛酸(A-Lipoic acid)所构成天然的抗氧化防御防线,
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flavonoids：黄酮类
注二:资料来自中华民国每日营养素建议量表(RDNA,82年)、美国每日营养素建议量表(RDA)黄酮类(Flavonoids) 预防动脉硬化 鲜黄色蔬果,如苹果、香瓜、葱、红酒自由基破坏脑部,使得神经传导物质多巴胺(Dopamine)缺乏所造成.
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flavonoids：黄酮类化合物
但是环氧树脂的介电常数和介质损耗较高、耐热性...作者: 段煜 学位授予单位: 四川大学 摘要: 黄酮类化合物(flavonoids)广泛分布于绿色植物中,具有抗衰老、抗炎、抗肿瘤、抗病毒、免疫调节等多种生物活性,在保健食品、化妆品和药剂配置等领域有很大的应用前景.
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Total flavonoids：总黄酮
总皂甙:total saponin | 总黄酮:Total flavonoids | 总黄酮:Total flavone
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