目的:对鸡蛋花中15-去甲基鸡蛋花苷进行含量测定。方法:采用HPLC,使用Kromasil-C18柱(250×4.6 mm,5μm),流动相为乙腈-0.5%磷酸水(8∶92),流速1.0 m L/min,柱温:30℃,检测波长:210 nm。结果:15-去甲基鸡蛋花苷进样量在0.2...目的:对鸡蛋花中15-去甲基鸡蛋花苷进行含量测定。方法:采用HPLC,使用Kromasil-C18柱(250×4.6 mm,5μm),流动相为乙腈-0.5%磷酸水(8∶92),流速1.0 m L/min,柱温:30℃,检测波长:210 nm。结果:15-去甲基鸡蛋花苷进样量在0.257~2.575μg范围内与峰面积呈良好的线性关系(r=0.9997,n=6),高、中、低浓度组的平均加样回收率分别为104.02%,103.93%,102.01%,RSD%分别为0.72%、0.56%、1.71%。结论:该方法能准确测定鸡蛋花中15-去甲基鸡蛋花苷的含量。展开更多
The compositions of soilless culture media for indoor lawns were studied through the determination of quality indexes (grass height, clipping weight, leaf width, density, lawn color and uniformity) of Festuca rubra ...The compositions of soilless culture media for indoor lawns were studied through the determination of quality indexes (grass height, clipping weight, leaf width, density, lawn color and uniformity) of Festuca rubra L. and Perennial Lolzum perenne L lawns. The results showed that composition 4 (black turf 1.2 L+vermiculite 0.3 L+ceramsite 0 L) is not suitable for the cultivation of indoor lawns. Composition 1 (black turf 0.3 L+vermiculite 0.75 L+ceramsite 0.45 L) and composition 2 (black turf 0.6 L+vermiculite 0.6 L+ceramsite 0.3 L) are suitable for indoor cultivation of F. rubra; and Perennial L. perenne turned yellow in all the tested media, and therefore, the media tested in this study are not suitable for indoor cultivation of Perennial L. perenne.展开更多
目的:比较不同来源鸡蛋花中挥发性成分的异同。方法:参照2010年版中国药典,采用水蒸气蒸馏法提取鸡蛋花鲜品(红色与白色)及不同产地干品中挥发性成分,以GC-MS法结合NIST MS Search 2.0质谱库检索,确定成分名称及其相对百分含量。结果:...目的:比较不同来源鸡蛋花中挥发性成分的异同。方法:参照2010年版中国药典,采用水蒸气蒸馏法提取鸡蛋花鲜品(红色与白色)及不同产地干品中挥发性成分,以GC-MS法结合NIST MS Search 2.0质谱库检索,确定成分名称及其相对百分含量。结果:从鸡蛋花药材中检测到55个色谱峰,并确认其中26个挥发性成分及其相对百分含量,主要为脂肪醇及酯类成分。鸡蛋花鲜品中含量最高的为苯甲酸香叶酯,干品中该成分含量相对较低。结论:不同来源鸡蛋花的挥发性成分组成与花的颜色相关性不大,与新鲜或干燥有较大关系。展开更多
文摘目的:对鸡蛋花中15-去甲基鸡蛋花苷进行含量测定。方法:采用HPLC,使用Kromasil-C18柱(250×4.6 mm,5μm),流动相为乙腈-0.5%磷酸水(8∶92),流速1.0 m L/min,柱温:30℃,检测波长:210 nm。结果:15-去甲基鸡蛋花苷进样量在0.257~2.575μg范围内与峰面积呈良好的线性关系(r=0.9997,n=6),高、中、低浓度组的平均加样回收率分别为104.02%,103.93%,102.01%,RSD%分别为0.72%、0.56%、1.71%。结论:该方法能准确测定鸡蛋花中15-去甲基鸡蛋花苷的含量。
文摘The compositions of soilless culture media for indoor lawns were studied through the determination of quality indexes (grass height, clipping weight, leaf width, density, lawn color and uniformity) of Festuca rubra L. and Perennial Lolzum perenne L lawns. The results showed that composition 4 (black turf 1.2 L+vermiculite 0.3 L+ceramsite 0 L) is not suitable for the cultivation of indoor lawns. Composition 1 (black turf 0.3 L+vermiculite 0.75 L+ceramsite 0.45 L) and composition 2 (black turf 0.6 L+vermiculite 0.6 L+ceramsite 0.3 L) are suitable for indoor cultivation of F. rubra; and Perennial L. perenne turned yellow in all the tested media, and therefore, the media tested in this study are not suitable for indoor cultivation of Perennial L. perenne.
文摘目的:比较不同来源鸡蛋花中挥发性成分的异同。方法:参照2010年版中国药典,采用水蒸气蒸馏法提取鸡蛋花鲜品(红色与白色)及不同产地干品中挥发性成分,以GC-MS法结合NIST MS Search 2.0质谱库检索,确定成分名称及其相对百分含量。结果:从鸡蛋花药材中检测到55个色谱峰,并确认其中26个挥发性成分及其相对百分含量,主要为脂肪醇及酯类成分。鸡蛋花鲜品中含量最高的为苯甲酸香叶酯,干品中该成分含量相对较低。结论:不同来源鸡蛋花的挥发性成分组成与花的颜色相关性不大,与新鲜或干燥有较大关系。