This paper summarized application and research advancement of the microwave-assisted extraction in the agriculture, food industry, environmental analytical chemistry, traditional Chinese medicine industry, and so on. ...This paper summarized application and research advancement of the microwave-assisted extraction in the agriculture, food industry, environmental analytical chemistry, traditional Chinese medicine industry, and so on. The microwave-assisted extraction was manifested to be a simple device, wide area of application, high extraction efficiency, good reproducibility and low consumption of agent and time as well as low environmental pollution. At present, industrialization question of the microwave-assisted extraction technology has been attached importance, which will impel the microwave-assisted extraction technology to more development in the future展开更多
A method for determination of quercetin in 8 kinds of Chinese herbal medicines by capillary electrophoresis(CE) with microwave assisted extraction(MAE) was developed. These medicines include Hypericum periforatum, Sem...A method for determination of quercetin in 8 kinds of Chinese herbal medicines by capillary electrophoresis(CE) with microwave assisted extraction(MAE) was developed. These medicines include Hypericum periforatum, Semen cuscuta, Flos sophorae buds, Flos sophorae flowers, Herba euphorbiae humifusae, Acanthopanax, Ginkgo biloba L. leaves and Rhododendron dauricuml. The method is simple, rapid and with satisfactory recoveries and good reproducibilities.展开更多
The microwave-assisted extraction(MAE)technology of tyrosinase inhibitor from batryticated silkworms was studied with the yield and the relative inhibitory activity against tyrosinase(RIAAT) of the extract used as eva...The microwave-assisted extraction(MAE)technology of tyrosinase inhibitor from batryticated silkworms was studied with the yield and the relative inhibitory activity against tyrosinase(RIAAT) of the extract used as evaluating indexes in the experiment.The effects of extraction variables,especially solvent concentrations,microwave power,the duration of microwave irradiation,materials-solvent mass ratio and material particle size on extraction efficiency were investigated.It was concluded that the optimal condition was two doses of microwave radiation(450 W) for 7 min with a mass ratio of 70 % ethanol to material by 8∶1.The extract of batryticated silkworms with 15.8 % yield and 66.7 % RIAAT was obtained after the extracted liquor was decoloured with active char,concentrated and then dried under vacuum.Compared with direct-heating extraction(DHE),MAE can shorten extracting duration,improve the yield and RIAAT of the extract.展开更多
文摘This paper summarized application and research advancement of the microwave-assisted extraction in the agriculture, food industry, environmental analytical chemistry, traditional Chinese medicine industry, and so on. The microwave-assisted extraction was manifested to be a simple device, wide area of application, high extraction efficiency, good reproducibility and low consumption of agent and time as well as low environmental pollution. At present, industrialization question of the microwave-assisted extraction technology has been attached importance, which will impel the microwave-assisted extraction technology to more development in the future
文摘A method for determination of quercetin in 8 kinds of Chinese herbal medicines by capillary electrophoresis(CE) with microwave assisted extraction(MAE) was developed. These medicines include Hypericum periforatum, Semen cuscuta, Flos sophorae buds, Flos sophorae flowers, Herba euphorbiae humifusae, Acanthopanax, Ginkgo biloba L. leaves and Rhododendron dauricuml. The method is simple, rapid and with satisfactory recoveries and good reproducibilities.
文摘The microwave-assisted extraction(MAE)technology of tyrosinase inhibitor from batryticated silkworms was studied with the yield and the relative inhibitory activity against tyrosinase(RIAAT) of the extract used as evaluating indexes in the experiment.The effects of extraction variables,especially solvent concentrations,microwave power,the duration of microwave irradiation,materials-solvent mass ratio and material particle size on extraction efficiency were investigated.It was concluded that the optimal condition was two doses of microwave radiation(450 W) for 7 min with a mass ratio of 70 % ethanol to material by 8∶1.The extract of batryticated silkworms with 15.8 % yield and 66.7 % RIAAT was obtained after the extracted liquor was decoloured with active char,concentrated and then dried under vacuum.Compared with direct-heating extraction(DHE),MAE can shorten extracting duration,improve the yield and RIAAT of the extract.