[Objectives] To establish a method for determining the content of Laggera alata( D. Don) Sch. Bip. Ex Oliv. using caffeic acid the target component,and to compare the content of caffeic acid in the medicinal materials...[Objectives] To establish a method for determining the content of Laggera alata( D. Don) Sch. Bip. Ex Oliv. using caffeic acid the target component,and to compare the content of caffeic acid in the medicinal materials of L. alata in different production areas of Guangxi.[Methods]The content was determined by Inertsil~ODS-3 chromatographic column C_(18)( 4. 60 mm × 250 mm,5 μm,mobile phase: acetonitrile-0. 1% phosphoric acid( 22∶ 78),detection wavelength: 320 nm,flow rate: 1. 0 m L/min,column temperature: 30℃,and injection volume: 10 μL. [Results] The caffeic acid showed a good linear relationship in the range of injection volume of 0. 025 92-0. 259 2 μg( R =0. 999 5). The average recovery rate was 98. 33%( RSD = 1. 85%). L. alata in different production areas of Guangxi contained the caffeic acid,and there was a great difference in the caffeic acid. L. alata in Baise had the highest content of caffeic acid,while that in Guilin had the lowest content of caffeic acid. [Conclusions]This method can accurately determine the content of caffeic acid and is expected provide a scientific basis for the development and utilization of herbal medicine L. alata.展开更多
[Objectives]To optimize the extraction process of polysaccharides from Actinidia arguta(Sieb.&Zucc.)Planch.ex Miq.[Methods]On the basis of single-factor tests,an orthogonal test was conducted with solid/liquid rat...[Objectives]To optimize the extraction process of polysaccharides from Actinidia arguta(Sieb.&Zucc.)Planch.ex Miq.[Methods]On the basis of single-factor tests,an orthogonal test was conducted with solid/liquid ratio,ultrasonic temperature,ultrasonic time and ultrasonic power as influencing factors.[Results]The optimal extraction process was as follows:solid/liquid ratio 1∶15(g/mL),ultrasonic temperature 50℃,ultrasonic time 50 min and ultrasonic power 90 W.Under the optimal extraction conditions,the extraction rate of polysaccharides reached 2.05%.[Conclusions]The method is simple and feasible,and can be used to optimize the extraction process of polysaccharides in A.arguta,in order to provide a theoretical basis for the further development and utilization of related resources.展开更多
我的名字叫Svchost．exe，伴随Windows2000而出现，随后的Windows XP、Windows Server 2003都可以见到我的身影。很多从WindowsS98／ME过渡到Win XP的读者首次见到我的时候，总以为我是病毒，并试图在“任务管理器”中“杀死”我。结果...我的名字叫Svchost．exe，伴随Windows2000而出现，随后的Windows XP、Windows Server 2003都可以见到我的身影。很多从WindowsS98／ME过渡到Win XP的读者首次见到我的时候，总以为我是病毒，并试图在“任务管理器”中“杀死”我。结果呢？我又不是比尔，当然一杀即死，不过系统也跟着我而去了，因为它要求重启或者关机!而这更坚定了一些读者朋友的看法，要不是病毒的话，怎么会出现这样的异常现象？我只能说：我是被冤枉的!展开更多
Crotalaria ferruginea Graham ex Benth.is a commonly used herb among ethnic minorities.Its whole plant is used as medicine for conditions such as heatstroke,tinnitus,hearing loss,phlegm heat cough,gum swelling and pain...Crotalaria ferruginea Graham ex Benth.is a commonly used herb among ethnic minorities.Its whole plant is used as medicine for conditions such as heatstroke,tinnitus,hearing loss,phlegm heat cough,gum swelling and pain,lower back and knee pain,vaginal discharge and infantile malnutrition.Modern pharmaceutical research has found that Crotalaria ferruginea Graham ex Benth.mainly contains flavonoids,steroids,organic acids and terpenes,which have antibacterial,free radical scavenging,antiinflammatory and other effects.Quality control mainly focuses on characteristics,identification,content determination,etc.This article summarizes the recent research progress on the chemical composition,pharmacological effects,quality control and extraction process of Crotalaria ferruginea Graham ex Benth.on the basis of existing Crotalaria ferruginea Graham ex Benth.research reports.展开更多
造纸工业在生产过程中产生大量含有机污染物和重金属的废水和污泥,导致造纸厂及周边地块的土壤修复工程难度增加。因此,环境影响评价有助于降低修复过程中的环境足迹。以某造纸污染地块为例,采用生命周期评价方法对地块的修复过程进行...造纸工业在生产过程中产生大量含有机污染物和重金属的废水和污泥,导致造纸厂及周边地块的土壤修复工程难度增加。因此,环境影响评价有助于降低修复过程中的环境足迹。以某造纸污染地块为例,采用生命周期评价方法对地块的修复过程进行环境足迹分析,探索绿色可持续的土壤修复方法,以期为我国造纸行业的土壤污染治理提供科学的理论支持和实践指导。采用SEFA工具计算3种备选方案的环境足迹,分别为:异位化学氧化与水泥窑协同处置(方案1),水泥窑协同处置(方案2),异位热脱附与土壤淋洗(方案3)。结果表明:材料消耗量、能源消耗总量、温室气体排放总量、大气污染物排放总量均表现为方案3<方案2<方案1;各修复技术的单方土碳排放量为0.05~0.66 t CO_(2)e/m^(3),蒙特卡罗不确定性分析也表明模拟结果合理,说明SEFA工具在修复方案的评估框架和评估结果均适用于造纸行业的土壤污染修复,对复杂的有机物和重金属污染地块的修复提供环境足迹定量计算具有一定的潜力和优势。展开更多
基金Supported by Project of National Natural Science Foundation(81660701&81260673)Project of Guangxi Graduate Education Innovation(YJS201625)+2 种基金Natural Science Foundation Project of Guangxi(2016GXNSFAA380148&2014GXNSFAA118208)Program of Key Laboratory for Purification and Quality Analysis of TCM Extraction in Guangxi Universities(Gui Jiao Ke Yan[2014]No.6)Laboratory of Chemistry and Quality Analysis in the Third Level Laboratory for Research of TCM(Zhuang)of State Administration of Traditional Chinese Medicine(Guo Zhong Yi Yao Fa[200]No.21)
文摘[Objectives] To establish a method for determining the content of Laggera alata( D. Don) Sch. Bip. Ex Oliv. using caffeic acid the target component,and to compare the content of caffeic acid in the medicinal materials of L. alata in different production areas of Guangxi.[Methods]The content was determined by Inertsil~ODS-3 chromatographic column C_(18)( 4. 60 mm × 250 mm,5 μm,mobile phase: acetonitrile-0. 1% phosphoric acid( 22∶ 78),detection wavelength: 320 nm,flow rate: 1. 0 m L/min,column temperature: 30℃,and injection volume: 10 μL. [Results] The caffeic acid showed a good linear relationship in the range of injection volume of 0. 025 92-0. 259 2 μg( R =0. 999 5). The average recovery rate was 98. 33%( RSD = 1. 85%). L. alata in different production areas of Guangxi contained the caffeic acid,and there was a great difference in the caffeic acid. L. alata in Baise had the highest content of caffeic acid,while that in Guilin had the lowest content of caffeic acid. [Conclusions]This method can accurately determine the content of caffeic acid and is expected provide a scientific basis for the development and utilization of herbal medicine L. alata.
基金National Undergraduate Innovation and Entrepreneurship Training Program of China(202111430049).
文摘[Objectives]To optimize the extraction process of polysaccharides from Actinidia arguta(Sieb.&Zucc.)Planch.ex Miq.[Methods]On the basis of single-factor tests,an orthogonal test was conducted with solid/liquid ratio,ultrasonic temperature,ultrasonic time and ultrasonic power as influencing factors.[Results]The optimal extraction process was as follows:solid/liquid ratio 1∶15(g/mL),ultrasonic temperature 50℃,ultrasonic time 50 min and ultrasonic power 90 W.Under the optimal extraction conditions,the extraction rate of polysaccharides reached 2.05%.[Conclusions]The method is simple and feasible,and can be used to optimize the extraction process of polysaccharides in A.arguta,in order to provide a theoretical basis for the further development and utilization of related resources.
文摘我的名字叫Svchost．exe，伴随Windows2000而出现，随后的Windows XP、Windows Server 2003都可以见到我的身影。很多从WindowsS98／ME过渡到Win XP的读者首次见到我的时候，总以为我是病毒，并试图在“任务管理器”中“杀死”我。结果呢？我又不是比尔，当然一杀即死，不过系统也跟着我而去了，因为它要求重启或者关机!而这更坚定了一些读者朋友的看法，要不是病毒的话，怎么会出现这样的异常现象？我只能说：我是被冤枉的!
文摘Crotalaria ferruginea Graham ex Benth.is a commonly used herb among ethnic minorities.Its whole plant is used as medicine for conditions such as heatstroke,tinnitus,hearing loss,phlegm heat cough,gum swelling and pain,lower back and knee pain,vaginal discharge and infantile malnutrition.Modern pharmaceutical research has found that Crotalaria ferruginea Graham ex Benth.mainly contains flavonoids,steroids,organic acids and terpenes,which have antibacterial,free radical scavenging,antiinflammatory and other effects.Quality control mainly focuses on characteristics,identification,content determination,etc.This article summarizes the recent research progress on the chemical composition,pharmacological effects,quality control and extraction process of Crotalaria ferruginea Graham ex Benth.on the basis of existing Crotalaria ferruginea Graham ex Benth.research reports.
文摘造纸工业在生产过程中产生大量含有机污染物和重金属的废水和污泥,导致造纸厂及周边地块的土壤修复工程难度增加。因此,环境影响评价有助于降低修复过程中的环境足迹。以某造纸污染地块为例,采用生命周期评价方法对地块的修复过程进行环境足迹分析,探索绿色可持续的土壤修复方法,以期为我国造纸行业的土壤污染治理提供科学的理论支持和实践指导。采用SEFA工具计算3种备选方案的环境足迹,分别为:异位化学氧化与水泥窑协同处置(方案1),水泥窑协同处置(方案2),异位热脱附与土壤淋洗(方案3)。结果表明:材料消耗量、能源消耗总量、温室气体排放总量、大气污染物排放总量均表现为方案3<方案2<方案1;各修复技术的单方土碳排放量为0.05~0.66 t CO_(2)e/m^(3),蒙特卡罗不确定性分析也表明模拟结果合理,说明SEFA工具在修复方案的评估框架和评估结果均适用于造纸行业的土壤污染修复,对复杂的有机物和重金属污染地块的修复提供环境足迹定量计算具有一定的潜力和优势。
