目的:考察高压炮制对何首乌中大黄素,大黄素甲醚及二苯乙烯苷含量的影响.方法:何首乌采用高压清蒸法炮制,考察不同蒸制时间对何首乌中蒽醌类成分,二苯乙烯苷含量的影响,并观察其在炮制过程中性状变化.采用HPLC测定大黄素,大黄素甲醚含量,色谱条件为DiamonsilC18色谱柱(4.6mm×250mm,5μm),流动相甲醇-0.1%磷酸(80:20...
Permission-based e-mail marketing programs featuring electronic newsletters have become a key element of the sport promotion landscape. Unfortunately, however, little information is available to guide sport or event marketers in the development of an e-newsletter program. To fill this gap, this study...