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TLC Identification of Yao Medicine Pileostegia tomentellal and Extraction Technology and Content Determination of Umbelliferone
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作者 Jiangcun WEI Xiumei MA +5 位作者 Meiyan QIU Bing QING Jingrong LU Hong LEI Xiaodong HUANG Wen ZHONG 《Medicinal Plant》 2024年第2期15-17,20,共4页
[Objectives]To establish a TLC and content determination method of Pileostegia tomentellal,with umbelliferone as the indicator component.[Methods]TLC identification was performed by silica gel G thin layer plate with ... [Objectives]To establish a TLC and content determination method of Pileostegia tomentellal,with umbelliferone as the indicator component.[Methods]TLC identification was performed by silica gel G thin layer plate with n-hexane-ethyl acetate(4:3)as the developing agent,and the plate was examined by UV lamp(365 nm).The umbelliferone content was determined by HPLC:Inertsil ODS-3 C 18 column(4.60 mm×250 mm,5μm);mobile phase acetonitrile-0.2%phosphoric acid gradient elution;detection wavelength 320 nm,flow rate 1.0 mL/min,column temperature 30℃,injection volume 10μL.[Results]The chromatogram of P.tomentellal showed the same color spot in the same position as that of reference medicinal material,and the spot was clear with good specificity.Umbelliferone showed a good linear relationship when the injection volume was 2.63-131.27μg/mL(R^(2)=0.9997).The average recovery of umbelliferone in the low,middle and high adding groups of P.tomentellal was 99.57%and the RSD was 2.15%.[Conclusions]The method can effectively identify Yao medicine P.tomentellal and accurately determine the content of umbelliferone in medicinal materials,which will provide a scientific basis for the development and utilization of medicinal resources of Yao medicine P.tomentellal. 展开更多
关键词 Pileostegia tomentellal TLC identification extraction technology UMBELLIFERONE Content determination
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Extraction,chemical components,bioactive functions and adulteration identification of walnut oils:A review
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作者 Yuan Gao Jia Hu +6 位作者 Xia Su Qi Li Caihong Su Yongling Li Gaiqin Ma Siyu Zhang Xiuzhu Yu 《Grain & Oil Science and Technology》 CAS 2024年第1期30-41,共12页
Walnut oil is a functional wood oil known to researchers that may potentially be a large source of Chinese edible oils.There are various extraction methods for walnut oil,including traditional(pressing,solvent-and enz... Walnut oil is a functional wood oil known to researchers that may potentially be a large source of Chinese edible oils.There are various extraction methods for walnut oil,including traditional(pressing,solvent-and enzymeassisted extraction)and novel methods(microwave,ultrasound,supercritical CO_(2),subcritical and other extraction technologies).Walnut oil is rich in nutrients,including phytosterols,tocopherols,polyphenols,squalene and minerals.It provides many health benefits,such as antioxidant,antitumor,anti-inflammatory,antidiabetic and lipid metabolism-related functions.In addition,the authentication of walnut oil has received much research attention.The present review provides detailed research on walnut oil extraction,composition,health benefits and adulteration identification methods.The path toward further walnut oil improvement in the context of the market value of walnut oil is also discussed. 展开更多
关键词 extraction technology Chemical composition Bioactive AUTHENTICATION
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Research on Technology Development of Traditional Chinese Medicine Extraction Based on Patent Information
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作者 Liu Yue Fu Nan +1 位作者 Shen Manzhu Yuan Hongmei 《Asian Journal of Social Pharmacy》 2023年第1期49-56,共8页
Objective To understand the development status of traditional Chinese medicine extraction technology,so as to provide a reference for enterprises and scientific research institutions to determine the direction of tech... Objective To understand the development status of traditional Chinese medicine extraction technology,so as to provide a reference for enterprises and scientific research institutions to determine the direction of technological innovation.Besides,the government can formulate scientific and technological innovation strategies.Methods Based on patent information,statistical methods were applied to analyze the development of traditional Chinese medicine extraction technology.Then,the core technology was identified by constructing a patent citation network.Finally,the main path analysis method was applied to discover the technological evolution path.Results and Conclusion The extraction technology of traditional Chinese medicine is still in the growth stage.At present,its R&D is based on enterprises,supplemented by scientific research institutions.The core technologies are ultrasonic extraction and enzymatic extraction.The main path represented by enzymatic extraction technology reveals the evolution process of traditional Chinese medicine extraction technology.Based on this,relevant suggestions are put forward.Firstly,technological innovation cooperation should be strengthened to explore new models of achievement transformation and cooperation.Secondly,key enterprises of technology clusters should be cultivated to accelerate breakthroughs in core technologies.Thirdly,combined technologies can achieve high-efficiency enzyme-assisted extraction and open up new ways of extracting traditional Chinese medicine.Fourthly,traditional techniques should be improved to develop innovative modern techniques. 展开更多
关键词 traditional Chinese medicine extraction technology technological innovation patent information technology evolution enzymatic extraction technology
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Advances in Researches of Extraction, Separation, and Purification Technologies for Total Saponins of Panax notoginseng
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作者 Hongyi CHEN Changmin GAN Yunqi GONG 《Medicinal Plant》 CAS 2019年第4期1-4,共4页
Total saponins of Panax notoginseng have the functions of promoting blood circulation and removing phlegm, thus they have high medicinal value. There are many different extraction methods in the extraction and separat... Total saponins of Panax notoginseng have the functions of promoting blood circulation and removing phlegm, thus they have high medicinal value. There are many different extraction methods in the extraction and separation of total saponins of P. notoginseng . The extraction methods of total saponins of P. notoginseng are mainly divided into traditional extraction methods, modern extraction methods and compound extraction methods. 展开更多
关键词 Total SAPONINS of PANAX notoginseng SEPARATION and PURIFICATION technologies extraction technologies
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Optimization of Microwave-assisted Extraction Technology of Polyphenols from Loropetalum chinense(R. Br.) Oliv 被引量:1
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作者 刘秀 黄维 +6 位作者 肖珑 陈靖宇 荣蓉 李瑾 唐彩红 谢鹏 金晨钟 《Agricultural Science & Technology》 CAS 2016年第11期2629-2635,共7页
In order to optimize the microwave-assisted extraction technology of polyphenols from Loropetalum chinense (R. Br.) Oliv., the effects of microwave power, ethanol concentration, solid to liquid ratio and extraction ... In order to optimize the microwave-assisted extraction technology of polyphenols from Loropetalum chinense (R. Br.) Oliv., the effects of microwave power, ethanol concentration, solid to liquid ratio and extraction time on polyphenols extraction rate were investigated. On the basis of single-factor test, a four-factor and three-level orthogonal test was designed by response surface method to establish a mathematical model between the response value and various factors. The results showed that the intensity of effect of different influencing factor on polyphenols ex- traction rate ranked as microwave power's〉solid to liquid ratio's〉extraction time's〉 ethanol concentration's. The optimum microwave-assisted extraction conditions for polyphenols from L. chinense were as follows: extraction power 254 W, ethanol concentration 60%, extraction time 12.5 rain and solid to liquid ratio 1:17. Under the optimum extraction conditions, the extraction rate of polyphenols from L. chinense was 19.17%. 展开更多
关键词 Loropetalum chinense (R. Br.) Oily. Potyphenols Microwave-assisted extraction technology Response surface analysis
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Optimization of Extraction Technology of Ellagic Acid from Pomegranate Peels with Orthogonal Experiment 被引量:4
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作者 干霞 陈亚楠 +3 位作者 余亮 朱柯成 曾星月 白琦 《Agricultural Science & Technology》 CAS 2012年第11期2404-2408,共5页
[Objective] This study aimed to investigate the optimal condition for extrac- tion of ellagic acid from pomegranate peels. [Method] With ellagic acid yield as an indicator, ultrasound extraction method was adopted to ... [Objective] This study aimed to investigate the optimal condition for extrac- tion of ellagic acid from pomegranate peels. [Method] With ellagic acid yield as an indicator, ultrasound extraction method was adopted to extract the ellagic acid from pomegranate peels, and the concentration of ellagic acid was measured by using ul- traviolet spectrophotometry; L9(34) orthogonal experiment was designed with four fac- tors at three levels, to investigate the effect of extraction temperature, extraction du- ration, solid-liquid ratio and ultrasound power on extraction rate of ellagic acid. [Re- sult] The optimal extraction condition for ellagic acid is extraction temperature of 30 ~C, solid-liquid ratio of 1:200, extraction duration of 20 min, and ultrasound power of 50 W. The relationship between primary and secondary factors affecting experimental indicators was solid-liquid ratio 〉 extraction duration 〉 ultrasound power 〉 extraction temperature. [Conclusion] Solid-liquid ratio has the maximum effect on extraction rate of ellagic acid. The ellagic acid extraction technology identified in this study is rea- sonable and feasible. 展开更多
关键词 Pomegranate peels ULTRASOUND Ellagic acid extraction technology Or-thogonal experiment
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Branched fibrous amidoxime adsorbent with ultrafast adsorption rate and high amidoxime utilization for uranium extraction from seawater 被引量:1
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作者 Wan-Ning Ren Xin-Xin Feng +5 位作者 Yu-Long He Ming-Lei Wang Wan-Feng Hong Hong-Wei Han Jiang-Tao Hu Guo-Zhong Wu 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2023年第6期79-90,共12页
Direct collection of uranium from low uranium systems via adsorption remains challenging.Fibrous sorbent materials with amidoxime(AO)groups are promising adsorbents for uranium extraction from seawater.However,low AO ... Direct collection of uranium from low uranium systems via adsorption remains challenging.Fibrous sorbent materials with amidoxime(AO)groups are promising adsorbents for uranium extraction from seawater.However,low AO adsorption group utilization remains an issue.We herein fabricated a branched structure containing AO groups on polypropylene/polyethylene spun-laced nonwoven(PP/PE SNW)fibers using grafting polymerization induced by radiation(RIGP)to improve AO utilization.The chemical structures,thermal properties,and surface morphologies of the raw and treated PP/PE SNW fibers were studied.The results show that an adsorptive functional layer with a branching structure was successfully anchored to the fiber surface.The adsorption properties were investigated using batch adsorption experiments in simulated seawater with an initial uranium concentration of 500μg·L^(−1)(pH 4,25℃).The maximum adsorption capacity of the adsorbent material was 137.3 mg·g^(−1)within 24 h;moreover,the uranyl removal reached 96%within 240 min.The adsorbent had an AO utilization rate of 1/3.5 and was stable over a pH range of 4–10,with good selectivity and reusability,demonstrating its potential for seawater uranium extraction. 展开更多
关键词 Radiation graft technology Branching structure High amidoxime utilization Seawater uranium extraction Ultrafast adsorption
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Extraction Technology of Eight Botanical Pesticides and Their Antifungal Activities on Fungus
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作者 高磊 谢宇琪 +1 位作者 王兴华 李颖 《Plant Diseases and Pests》 CAS 2010年第6期54-57,共4页
[ Objective] The optimum extraction technology of antifungal ingredients from eight medicinal plants such as coptis root and clove, etc. and their antifungal effects on two species of plant pathogens were studied. [ M... [ Objective] The optimum extraction technology of antifungal ingredients from eight medicinal plants such as coptis root and clove, etc. and their antifungal effects on two species of plant pathogens were studied. [ Method] The effective ingredients of medicinal plants were extracted by water, ethanol and acetone. The minimum inhibitory concentration (MIC) and antifungal rate of extracts from medicinal plants were determined using plate diluting method. [Resets] The optimum medicinal plants and the extraction methods inhibited two plant pathogens were as follows: clove extracted by ethanol and acetone, and cinnamon extracted by ethanol could be adopted to inhibit Fusarium oxysporum Schl., MIC at that mo- ment reached 4 mg/ml. Clove extracted by ethanol and acetone, and cinnamon extracted by ethanol could be adopted to inhibit the pathogen of Cistanche deserticola, MIC at that moment reached 4 mg/ml. [ Conclusion] The antifungal effects of ethanol and acetone extracts on tested patho- gens were obviously superior than that of aqueous extracts. 展开更多
关键词 Botanical pesticides extraction technology MIC Antifungal rate
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Development trend and prospect of solid phase extraction technology 被引量:10
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作者 Chao Zhang Huifang Xing +2 位作者 Liangrong Yang Pengfei Fei Huizhou Liu 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2022年第2期245-255,共11页
Solid phase extraction is widely used in sample pretreatment,concentration and analysis processes due to high selectivity and suitability for low concentration sample system.In this review,we systematically summarized... Solid phase extraction is widely used in sample pretreatment,concentration and analysis processes due to high selectivity and suitability for low concentration sample system.In this review,we systematically summarized and discussed the development trends of solid phase extraction by bibliometrics method.By analyzing papers output scale,the research and development direction of solid phase extraction technology is prospected.We also give an overview on current strategies of novel solid phase extraction from the separation medium and separation technology.The paper aims to describe the global research profile and the development trends of solid phase extraction,to help researchers to accurately grasp the research trend and to provide support for scientific research institutions to formulate scientific policies and strategic plans.Furthermore,the prospect of the development and application of solid phase extraction is also discussed. 展开更多
关键词 Solid phase extraction Papers output scale Quality of research Novel technology
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Study on Extraction Technology of Total Flavonoids from Vitex rotundifolia 被引量:1
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作者 Xianping DAI 《Agricultural Biotechnology》 CAS 2015年第1期31-32,35,共3页
[ Objective ] This study aimed to establish the optimal extraction technology of total flavonoids from Vitex rotundifolia and provide a theoretical basis for the utilization and development of V. rotundifolia. [ Metho... [ Objective ] This study aimed to establish the optimal extraction technology of total flavonoids from Vitex rotundifolia and provide a theoretical basis for the utilization and development of V. rotundifolia. [ Method ] With the extraction temperature, extraction time, solid-liquid ratio and ethanol concentration as various factors, the content of total flavonoids as an indicator, the extraction technology of total flavonoids from V. rotundifolia was optimized by orthogonal experiment. [ Result] The optimal combination of extraction conditions was extraction temperature 70℃, extraction time 1 h, solid-liquid ratio 1: 12, ethanol concentration 70%. [Condusion] The optimized extraction technology was simple and efficient for extracting total flavonoids from V. rotundifolia. 展开更多
关键词 Vitex rotundifolia Total flavonoids Orthogonal experiment extraction technology
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Optimization of Extraction Technology for Rice Bran Oil 被引量:1
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作者 Hongrui LI Hai GUO +1 位作者 Liqin ZHU Yonggen SHEN 《Agricultural Biotechnology》 CAS 2013年第5期52-54,57,共4页
[ Objective ] This study aimed to optimize the extraction technology for rice bran oil. [ Method ] Using rice bran as raw material, effects of ultrasonicassisted extraction technology and different organic solvents, e... [ Objective ] This study aimed to optimize the extraction technology for rice bran oil. [ Method ] Using rice bran as raw material, effects of ultrasonicassisted extraction technology and different organic solvents, extraction durations, solid-liquid ratios and extraction temperatures on extraction results of rice bran oil were investigated. Based on the results of single-factor experiment, L9 (34 ) orthngonal experiment with three factors at three levels was conducted to optimize the extraction technological parameters, thus obtaining the optimal technological conditions for extracting rice bran oil. [ Result] Anhydrous ethanol led to the best extraction result; after ultrasonic treatment, the extraction rate of rice bran oil from raw material was not enhanced. The optimized technological parameters were : extraction temperature of 80 ℃, extraction duration of 20 rain and solid-liquid ratio of 1:24 ( g: ml). Under the optimized technological conditions, the extraction rate of rice bran oil reached 19.33%. [ Conclusion] This study laid solid foundation for further investigation and development of rice bran oil. 展开更多
关键词 Rice bran Rice bran oil Optimal extraction technology
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Extraction of Carotenoids and Fatty Acids from Microalgae Using Supercritical Technology 被引量:1
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作者 Lourdes Casas Cardoso Casimiro Mantell Serrano +2 位作者 Miguel Rodríguez Rodríguez Enrique J. Martínez de la Ossa Luis M. Lubián 《American Journal of Analytical Chemistry》 2012年第12期877-883,共7页
The work described here is based on a comparative study of carotenoids and fatty acids extracted from Synechococcus sp. with (1) pure supercritical CO2, (2) CO2 with 5% (v/v) ethanol as cosolvent and (3) ultrasound-as... The work described here is based on a comparative study of carotenoids and fatty acids extracted from Synechococcus sp. with (1) pure supercritical CO2, (2) CO2 with 5% (v/v) ethanol as cosolvent and (3) ultrasound-assisted extraction using N, N-dimethylformamide (DMF). The effects of extraction conditions on supercritical CO2 extraction with and within cosolvent were analyzed at different temperatures (40℃, 50℃ and 60℃) and pressures (200, 300 and 400 bars). SFE with CO2 proved to be the most selective method for the extraction of β-carotene, but under these conditions the contents of zeaxanthin and fatty acids were only comparable to or lower than those obtained with techniques that use SFE cosolvent. The SFE technique with CO2 and ethanol simultaneously extracted β-carotene and zeaxanthin and not only increased the concentrations of fatty acids obtained, but also helped to remove fatty acids (palmitoleic and linolenic acid) that were not obtained with pure CO2. Comparison of the supercritical technology with the ultrasound-assisted extraction (UAE) shows that the former technique is the most appropriate due to the fact that ethanol is generally regarded as a safe solvent in comparison to DMF. 展开更多
关键词 Carotenoids FATTY ACIDS SYNECHOCOCCUS sp. SUPERCRITICAL technology Ultrasound-Assisted extraction
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Optimization of Enzyme-assisted Extraction Technology for Tartary Buckwheat Shell Procyanidins with Response Surface Methodology 被引量:1
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作者 Lihuan YUAN Jiangyan DUAN 《Agricultural Science & Technology》 CAS 2017年第7期1196-1201,共6页
This study was conducted to investigate the effects of cellulase dosage, enzymolysis time, pH and enzymolysis temperature on procyanidin extraction rate by single factor experiment, with tartary buckwheat shell as an ... This study was conducted to investigate the effects of cellulase dosage, enzymolysis time, pH and enzymolysis temperature on procyanidin extraction rate by single factor experiment, with tartary buckwheat shell as an experimental material.Main process parameters were optimized to obtain a regression model by response surface methodology. The results of variance analysis indicated that the regression model reflected the relationship between buckwheat shell procyanidin extraction rate with enzyme dosage, enzymolysis time, pH and enzymolysis temperature; and the optimal process parameters were enzyme dosage of 6.5 mg/g, enzymolysis time of 1.5 h, pH at 4.7 and enzymolysis temperature at 46 ℃. Three parallel experiments were conducted under these process parameters. In practice, the highest procyanidin extraction rate was 6.78 g/100 g. The relative error between the predicted value of regression model and the actual value was 1.3%. The regression equation fitted the real situation better. 展开更多
关键词 Tartary buckwheat Procyanidin extraction rate extraction technology Response surface methodology
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Extraction Technology of Total Flavonoids from Pueraria lobata (Willd.) Ohwi and Content Determination of Pueraria lobata (Willd.) Ohwi at Different Altitudes 被引量:2
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作者 Chunlin LIU Yingchen LI +1 位作者 Bochao LI Yuan LIU 《Medicinal Plant》 2017年第2期12-14,18,共4页
[Objectives]To optimize the extraction technology of total flavonoids from Pueraria lobata( Willd.) Ohwi. [Methods]The ultraviolet-visible spectrophotometry was used to determine the content of total flavonoids in Pue... [Objectives]To optimize the extraction technology of total flavonoids from Pueraria lobata( Willd.) Ohwi. [Methods]The ultraviolet-visible spectrophotometry was used to determine the content of total flavonoids in Pueraria lobata( Willd.) Ohwi. With the puerarin as index,the reflux extraction and single factor test were employed to investigate the effects of temperature,time,ethanol concentration and solid-liquid ratio on the content of total flavonoids in Pueraria lobata( Willd.) Ohwi,respectively. Under the optimal extraction technology,the content of total flavonoids in Pueraria lobata( Willd.) Ohwi at different altitudes was determined.[Results] The optimum extraction process was as follows: 70%ethanol; solid-liquid ratio of 1∶ 30; 1 h reflux extraction. Under these conditions,the extraction rate of flavonoids in Pueraria lobata( Willd.) Ohwi was 11. 48%,the total flavonoids content of different kudzu parts was in the order of roots > stems > leaves,and the total flavonoids content of the sample at about an altitude of 1000 m was significantly higher than at the altitudes of 1400 m and 1700 m.[Conclusions]It was suggested that the Pueraria lobata( Willd.) Ohwi should not be cultivated as medicinal plant in too high mountains,and the stems and leaves of Pueraria lobata( Willd.) Ohwi could be used as raw materials for extracting total flavonoids. 展开更多
关键词 PUERARIA lobata(Willd.) Ohwi TOTAL FLAVONOIDS extraction technology Different ALTITUDES CONTENT determination
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A new horizon for neuroscience:terahertz biotechnology in brain research
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作者 Zhengping Pu Yu Wu +2 位作者 Zhongjie Zhu Hongwei Zhao Donghong Cui 《Neural Regeneration Research》 SCIE CAS 2025年第2期309-325,共17页
Terahertz biotechnology has been increasingly applied in various biomedical fields and has especially shown great potential for application in brain sciences.In this article,we review the development of terahertz biot... Terahertz biotechnology has been increasingly applied in various biomedical fields and has especially shown great potential for application in brain sciences.In this article,we review the development of terahertz biotechnology and its applications in the field of neuropsychiatry.Available evidence indicates promising prospects for the use of terahertz spectroscopy and terahertz imaging techniques in the diagnosis of amyloid disease,cerebrovascular disease,glioma,psychiatric disease,traumatic brain injury,and myelin deficit.In vitro and animal experiments have also demonstrated the potential therapeutic value of terahertz technology in some neuropsychiatric diseases.Although the precise underlying mechanism of the interactions between terahertz electromagnetic waves and the biosystem is not yet fully understood,the research progress in this field shows great potential for biomedical noninvasive diagnostic and therapeutic applications.However,the biosafety of terahertz radiation requires further exploration regarding its two-sided efficacy in practical applications.This review demonstrates that terahertz biotechnology has the potential to be a promising method in the field of neuropsychiatry based on its unique advantages. 展开更多
关键词 biological effect brain NEURON NEUROPSYCHIATRY NEUROSCIENCE non-thermal effect terahertz imaging terahertz radiation terahertz spectroscopy terahertz technology
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Research Progress of Extraction Technology and Application of Chemical Substances in Perilla Seed
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作者 Shi Yilin Gu Xianhong +1 位作者 Mao Wei Wang Zhanbin 《Animal Husbandry and Feed Science》 CAS 2016年第2期113-118,共6页
Perilla seed is one of the traditional Chinese herbs normally used both as food and medicine for its various functional ingrediems such as protein, amino acids, ct-linolenic acid, flavones, rosmarinic acid, terpenes, ... Perilla seed is one of the traditional Chinese herbs normally used both as food and medicine for its various functional ingrediems such as protein, amino acids, ct-linolenic acid, flavones, rosmarinic acid, terpenes, polysaccharides, etc.. Pefilla seed is with physiological features in slowing down decrepitude, lower- ing blood pressure, cholesterol, inhibiting cancer cell differentiation, and improving body immune. The present paper summarized research progress at home and abroad on chemical component analysis, extraction technology and application status of perilla seed in the fields of feed, health care, food and chemical industry in recent years, in order to provide a reference basis for reasonable development of perilla seed. 展开更多
关键词 Perilla seed Chemical components extraction technology APPLICATION
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Chinese Bio-oxidation Gold Extraction Technology Reaches International Advanced Level
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作者 HAO Ziguo FEI Hongcai +2 位作者 LIU Lian HAO Qingqing Susan TURNER 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2014年第5期1617-1617,共1页
In Liaoning, Hunan, Guangxi, Guizhou, Gansu, Sichuan, Anhui, Jilin and other provinces in China, there is a wide occurrence of metal quantity over 1000 tons of refractory gold ores, principally because of low gold rec... In Liaoning, Hunan, Guangxi, Guizhou, Gansu, Sichuan, Anhui, Jilin and other provinces in China, there is a wide occurrence of metal quantity over 1000 tons of refractory gold ores, principally because of low gold recoveries and become "stay mine". Features of refi'actory gold ores are: gold in micro-particles or a microscopic state that is wrapped in pyrite, presence of arsenopyrite and other sulfide minerals or disseminated in the crystal lattice of sulfide minerals; harmful impurity elements such as arsenic, carbon, mercury, antimony, copper with high content are closely related with the gold, and these elements affect the contact reaction between the gold and solvent extraction, making the recovery of the gold extraction process low. In the past 20 years, overseas countries have developed the application of the roasting oxidation method, hot acid (alkali) oxidation, bacterial oxidation and flash chlorination oxidation technology to solve this problem.Among these, biological oxidation has developed rapidly in the domestic market and gold enterprises abroad because of its low investment in infrastructure, low production costs, less environmental pollution, simple process and easy control, etc. 展开更多
关键词 Gold In Chinese Bio-oxidation Gold extraction technology Reaches International Advanced Level
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Saponins Content in Fibrous Roots of Pseudostellaria heterophylla and Optimization of the SEP Extraction Technology
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作者 Yanda ZHANG Huiqing PAN +3 位作者 Yufang MA Xiaotan YUAN Hegui LIN Qi ZHAO 《Medicinal Plant》 CAS 2020年第4期60-63,共4页
[Objectives]To explore the saponins resources in fibrous roots of Pseudostellaria heterophylla and optimize the SEP technology for extracting saponins.[Methods]Saponins contents in fibrous roots and root tubers of P.h... [Objectives]To explore the saponins resources in fibrous roots of Pseudostellaria heterophylla and optimize the SEP technology for extracting saponins.[Methods]Saponins contents in fibrous roots and root tubers of P.heterophylla were compared;with the fibrous roots as host materials,this experiment applied Box-Behnken design to analyze the influence of steam pressure,maintenance pressure time,moisture content of host materials on the content of saponins extracts.[Results]Saponins content was higher in fibrous roots than in tuberous roots of P.heterophylla;the response surface optimization showed that SEP(steam explosion pretreatment)promoted the contents of saponins and extracts in fibrous roots,and the optimal extracting conditions were stream pressure 1.50 Mpa,maintenance pressure time 54 s,and moisture content of host materials 30%.Under this extracting conditions,the verification value of saponins content experiment was 0.441%,36.53%higher than the untreated control group.[Conclusions]This research offered a new method of exploring saponins resources from fibrous roots of P.heterophylla,and provided a reference for developing new medicinal parts of P.heterophylla. 展开更多
关键词 Fibrous root Pseudostellaria heterophylla SAPONIN extraction technology Response surface optimization
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Breakthrough in the China's Separation Technology for Extraction of Rare Earth Elements
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作者 HAO Ziguo FEI Hongcai +1 位作者 LIU Lian Susan TURNER 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2013年第6期1743-1744,共2页
Separation technology of rare earth elements (REEs), as the critical step in the separation process, had long been fraught with technical difficulty. A research project conducted by Baotou Shibo Rare Earth Extracti... Separation technology of rare earth elements (REEs), as the critical step in the separation process, had long been fraught with technical difficulty. A research project conducted by Baotou Shibo Rare Earth Extraction & Equipment Co. Ltd., Baotou REE Research Institute, and Baotou Steel & REE Group Hi-Tech Co. Ltd (Inner Mongolia), has successfully solved the problem using a centrifugal extractor and advanced techniques to achieve a key breakthrough. 展开更多
关键词 LINE Breakthrough in the China’s Separation technology for extraction of Rare Earth Elements REE
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Optimization of Extraction Technology of Auricularia auricula Polysaccharide
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作者 ZHANG Hai-yan CHEN Shao-hui 《Animal Husbandry and Feed Science》 CAS 2013年第4期172-174,178,共4页
[Objective]This experiment aimed to study the extraction technology of Auricularia auricula polysaccharide(APS).[Method] Polysaccharide yield was regarded as studying target.Based on the single factor experiment res... [Objective]This experiment aimed to study the extraction technology of Auricularia auricula polysaccharide(APS).[Method] Polysaccharide yield was regarded as studying target.Based on the single factor experiment results,orthogonal experiment design was applied to study the effect of liquid-solid ratio,extraction time,extraction temperature on polysaccharide yield.[Result]The results showed that extraction temperature was an important factor that affects the yield of crude polysaccharide,the optimal technology condition of water extraction way was liquid-solid ratio of 1:70(g:ml),4-hour extraction time with temperature at 100 ℃.[Conclusion] The yield of Auricularia auricular polysaccharide was 42.56% under the above mentioned condition. 展开更多
关键词 Auricularia auricular Polysaccharide extraction technology
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