نتایج جستجو برای: ultrasonic assisted microextraction

تعداد نتایج: 159984  

Journal: :Acta Polytechnica CTU Proceedings 2016

Journal: :Journal of the Brazilian Chemical Society 2003

Journal: :Molecules 2017
Chunying Li Yukun Zhang Chunjian Zhao Yujiao Ni Kaiting Wang Jingjing Zhang Wenyan Zhao

A novel and efficient ultrasonic assisted-reflux synergistic extraction (UARSE) method for extracting camptothecin (CPT) and betulinic acid (BA) from Camptotheca acuminata Decne. fruits has been developed in this study. The advantages of the ultrasonic and reflux extraction methods have been combined in the UARSE method and used to extract CPT and BA for the first time. The parameters influenci...

Journal: :Journal of mass spectrometry : JMS 2014
Shu-Hsuan Lin Ta-Ju Lo Fang-Yin Kuo Yu-Chie Chen

Ultrasonication has been used to accelerate chemical reactions. It would be ideal if ultrasonication-assisted chemical reactions could be monitored by suitable detection tools such as mass spectrometry in real time. It would be helpful to clarify reaction intermediates/products and to have a better understanding of reaction mechanism. In this work, we developed a system for ultrasonication-assi...

Journal: :The Journal of the Acoustical Society of America 1975

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