6篇
您的检索式：作者名="Zhenku Guo"
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| 1 | Comparison of microwave-assisted extraction of aloe-emodin in aloe with Soxhlet extraction and ultrasound-assisted extraction显示文摘This paper reports the extraction of aloe-emodin from aloe by microwave-assisted extraction.The effects of various factors,including the solvent,the ratio (mL/g) of the solvent to the sample,microwave irradiation time and microwave power,were discussed in the experiments.The yield of aloe-emodin was determined by HPLC.The optimized conditions for microwave-assisted extraction of aloe-emodin were concluded as follows: the solvent is 80% ethanol (V/V) solution,microwave irradiation time is 3 min and microwave power is 340 W.Additionally,HPLC fingerprint was developed for consistency evaluation of aloe.The similarities of 3 aloe samples obtained by microwave-assisted extraction,ultrasound-assisted extraction and Soxhlet extraction were more than 0.9,indicating that 3 aloe samples were consistent.Compared with Soxhlet extraction and ultrasound-assisted extraction,microwave extraction is a rapid method with higher yield and less solvent consumption.Aloe samples treated by microwave-assisted extraction,ultrasound-assisted extraction and Soxhlet extraction were observed using transmission electronic microscopy.The micrographs provide evidence of more breakage of chloroplasts treated by microwave-assisted extraction as compared to Soxhlet extraction and ultrasound-assisted extraction. | WANG GuiHua SU Ping ZHANG Fan HOU XiangYan YANG Yi GUO ZhenKu | 2011 | Science China Chemistry2011，54，1： | 8 |
| 2 | Microwave- assisted extraction of effective constituents from a Chinese herbal medicine Radix puerariae 显示文摘 | Zhenku Guo Qinhan Jin Guoqiang Fan | 2001 | Analytica Chimica t Acta2001，436，： | 1 |
| 3 | Microwave-assisted extraction of effective constituents from a Chinese herbal medicine radix puerariae显示文摘 | Guo Zhenku Jin Qinhan Fan Guoqiang | 2001 | Analytica Chimica Acta2001，436，： | 1 |
| 4 | Microwave assisted extract ion of effective const ituents from a chinese herbal medicine radix puerariae显示文摘 | Zhenku Guo Qinhan Jin Guoqiang Fan | 2001 | Analyt ica Chimica Acta2001，436，： | 1 |
| 5 | Microwave-assisted extraction of effective constituents from a Chinese herbal medicine Radix puerariae显示文摘 | Zhenku Guo Qinhan Jin Guoqiang Fan Yuping Duan Chen Qin Minjie Wen | 2001 | Analytica Chimica Acta2001，，1： | 1 |
| 6 | Microwave-Assisted Extraction of Effective Constituents from a Chinese Herbal Medicine Radix Puerariae显示文摘 | Zhenku Guo Qinhan Jin Guoqiang Fan | 2001 | Analytica Chimica Acta2001，436，： | 1 |
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