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时间:2018-12-21
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1、目录摘要1关键词1Abstract.1Keywords11绪论21.1葛根的概述21.2国内外研究现状32葛根黄酮的提取32.1主要仪器与试剂32.2黄酮含量的测定42.2.1黄酮含量测定原理42.2.2芦丁标准溶液的制备42.2.3标准曲线的绘制42.3水浸法提取葛根黄酮42.4纤维素酶法提取葛根黄酮42.5超声辅助法提取葛根黄酮42.6微波辅助法提取葛根黄酮53结果与分析53.1传统水浸法提取葛根黄酮53.1.1料液比对葛根黄酮提取率的影响53.1.2浸提时间对葛根黄酮提取率的影响53.1.3浸提温度对葛根黄酮提取率的影响63.2纤维素酶法提取葛根黄酮73.2.1纤维素酶用量对黄酮提取率
2、的影响73.2.2纤维素酶酶解时间对黄酮提取率的影响73.3超声辅助法提取葛根黄酮83.3.1超声功率对葛根黄酮提取率的影响83.3.2超声时间对葛根黄酮提取率的影响93.4微波辅助法提取葛根黄酮94结论10参考文献10致谢1111葛根黄酮的提取工艺研究何鹏程(湖南城市学院化学工程与工艺专业2012届学生)[摘要]目的:建立葛根黄酮提取优选方案。方法:采用传统水浸提法、纤维素酶法、超声辅助法和微波辅助法4种不同处理方法葛根黄酮进行提取。结果:纤维素酶法较优案为料液1:40、酶解温度50℃、pH4.5,200U/ml作用2h;微波辅助法较优方案为料液比1:40、微波功率档位为中火、作用时间为8
3、min预处理后,80℃下水浸提1.5h;超声辅助法较优方案为料液比1:40、超声功率300W、超声时间6min预处理后,80℃下水浸提1.5h;传统水浸提法较优方案为料液比1:40、温度80℃下水浸提1.5h。结论:纤维素酶法提取葛根黄酮效果最佳,是葛根黄酮提取首选方案,传统水浸提法宜结合超声辅助法和微波辅助法。[关键词]葛根黄酮;传统水浸提法;纤维素酶法;超声辅助法;微波辅助法SdudyonExtractionofFlavanoidfromRadixPuerariaHePengcheng(2012YearStudentofChemicalEngineeringandTechnologyMa
4、jor,HunanCityUniversity)[Abstract]Objective:ToestablishanoptimummethodofextractionflavanoidfromRadixpueraria.Method:Traditionwaterleach,celluloseenzyme,ultrasonicassistantandmicrowaveassistantextractingprocedureswereusedforflavanoidextraction.Result:TheoptimumconditionofextractionofPuerariaflavanoi
5、dwasasfollows:solidtoliguidratidwas1:40withenzymeof200U/mlextractionfor2hoursat50℃,pH4.5incelluloseenzymeextraetion;thethird-gearsmicrowavepowerwasusedfor8minutespretreatment,thenextractedat80℃for1.5hoursinthemierowaveassistanceextracting;theultrasonicpower300Wand6minutesofpretreatmentwereusedwiths
6、olidtoliquidratioof1:40,thenextractedat80℃for1.5hoursinthemierowaveassistanceextracting;andextractedat80℃for1.5hourswithsolidtoliquidratioof1:40intraditionwaterleachextracting.Conclusion:ThehighestyieldforRadixPuerariaflavanoidextractedoccurredincelluloseenzymeextracting,whichwasthepreferredalterna
7、tive.Traditionwaterleachextractingshouldbecombinedwithultrasonicassistantandmicrowaveassistantextracting.[Keywords]Puerariaflavanoid;traditionwaterleachextracting;celluloseenxymeextracting;ultrasonicassista
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