Microwave-assisted extraction of quercetin and acid degradation of its glycosides in psidium guajava leaves

作者：Huang, JL; Zhang, ZX^*

来源：Analytical Sciences, 2004, 20(2): 395-397.

DOI：10.2116/analsci.20.395

Microwave-assisted extraction (MAE) and microwave-assisted hydrolysis (MAAH) were developed for the sample preparation of guava leaves prior to GC determination of quercetin and its glycosides. Ethanol was selected as the solvent. The optimum MAE temperature, particle size, solvent volume and MAE time are 120degreesC, 40 - 60 mesh, 20 mL and 5 min, respectively; the optimum MAAH temperature and time, HCl concentration, solvent are 100degreesC, 5 min, 1.2 mol L-1 HCl and ethanol, respectively.

• 出版日期2004-2
• 单位中山大学