不同产地不同采收期蔷薇红景天中红景天苷的含量测定

目的 对不同产地、不同采收时期的蔷薇红景天中主要活性成分红景天苷含量进行对比研究.方法 以红景天苷为指标,采用HPLC法,测定了蔷薇红景天药材中的红景天苷含量.色谱条件为PLATISTLTMC18柱(250 mm×4.6 mm,5μm),水∶甲∶乙腈为流动相,检测波长为275nm.结果 蔷薇红景天苷的含量在0.52～5.2μg范围内峰吸光度与浓度线性关系良-好(r =0.999 8).由于产地和采收时间不同,蔷薇红景天中红景天苷含量有差异,以8月采收的新疆塔城额敏县的蔷薇红景天的含量最高,其为1.297％,RSD为1.519％.结论 该方法操作简便,结果准确,重复性好,实验结果可用于指导合理采收开发蔷薇红景天资源.     

HPLC法测定红景天枸杞片中红景天苷的含量

目的：建立HPLC测定红景天枸杞片中红景天苷的含量的方法。方法：采用WelchC18色谱柱（4．6mm×250nm,5μm）,流动相：以水-乙腈进行梯度洗脱;检测波长：275nm,流速：1．0m1．min^-1,柱温：35℃。结果：红景天苷在39．2～392μg·ml^-1浓度范围内峰面积与浓度呈良好线性关系（r=0．9998,n=6）,平均加样回收率为98．6％,RSD=0．70％（n=6）。结论：本法简便,结果准确,重现性好,可作为红景天枸杞片的质量控制。     

长白山地区高山红景天的核磁共振特征图谱的研究

目的 研究长白山地区野生和栽培高山红景天核磁共振特征图谱。方法 采用越天增总提取物通用方法，用液-质联机作比较，同时以长白红景天作对比。结果 采用赵天增总提取物通用方法；薄层层析后都可以得到有效成分红景天苷特征明显的核磁共振特征图谱。长白红景天有效成分红景天苷特征不明显的核磁共振特征图谱。结论 根据野生和栽培高山红景天的总提物的收率，可以判断它们品质的优劣；根据野生和栽培高山红景天核磁共振特征图谱，可以成为高山红景天真伪鉴别的依据；高山红景天和长白红景天谱图的相似性。说明他们为同科属植物。     

不同产地大花红景天中红景天苷含量比较

目的:比较不同产地大花红景天药材中红景天苷的含量。方法:采用HPLC测定红景天苷含量。结果:西藏、青海、云南等不同产地的大花红景天的红景天苷含量均高于0.50%。结论:不同产地大花红景天药材中红景天苷含量差异较大,以西藏产区为优。     

HPLC法测定不同药用部位及不同贮藏年限的大花红景天中红景天苷的含量

目的:测定不同贮藏年限大花红景天的出膏率及红景天苷的含量。方法:采用高效液相色谱法。结果和结论:测得不同贮藏年限大花红景天中红景天苷的含量在0．38％-1．56％之间;3种当年采收干品不同药用部位的大花红景天中红景天苷的含量在1．28％-1．56％之间;不同贮藏年限与不同药用部位的大花红景天水提物中红景天苷在0．69％-3．15％之间。     

溶栓胶囊中红景天苷的含量测定

采用高效液相色谱法分离并测定了中药溶栓胶囊中红景天苷的含量。色谱条件：Diamnosil C18柱，以乙腈-水(20：80)为流动相，检测波长275nm。结果平均加样回收率为99．75％。本方法精密度高，分离度良好，具有实用性。     

高山红景天中红景天苷含量的生育期差异

目的:评价高山红景天根、茎和叶片中红景天苷含量的差异。方法:采用Waters高效液相色谱仪测定3个生育期的高山红景天根、茎和叶片红景天苷的含量。结果:无论是根、茎还是叶片,高山红景天中红景天苷含量均为果熟期最高,萌芽期次之,花期最低。而且,根中红景天苷的含量显著高于茎和叶片中红景天苷的含量。结论:高山红景天各部位中红景天苷含量在果熟期最高,因此,高山红景天的采收应在每年果熟后为宜。     

大花红景天中草质素苷含量分析

目的:测定11个批次大花红景天样品中草质素苷的含量,为红景天质量标准的制订提供参考.方法:采用HPLC测定,Zorbax SB-C18(4.6 mm×250 mm,5μm)色谱柱;流动相乙腈-0.2％醋酸(22％∶78％);流速1.0 mL·min-1;检测波长332 nm;柱温40℃.结果:11个样品中草质素苷含量为0.033％～0.765％.结论:大花红景天中草质素苷含量测定方法方便、准确.     

5种树脂吸附高山红景天化学成分的HPLC-DAD分析研究

目的:为获得稳定的红景天提取物提供依据,研究不同类型树脂对红景天化学成分的吸附差异.方法:选择5种不同极性、不同厂家的大孔吸附树脂,吸附高山红景天中的化学成分,并以红景天苷为主要检测成分,进行HPLC-DAD分析研究.结果:5种吸附树脂吸附红景天中的化学成分时,对红景天苷的吸附量存在差异.结论:HPLC-DAD法能较好识别红景天的树脂提取物,建议应进行多个特征峰的含量检测,以实现红景天提取物的质量稳定.     

比色法测定不同红景天药材中酚性成分的含量

报道了重氮盐比色法测定蔷薇红景天（新疆伊犁产），高山红景天（新疆昌吉产）及狭叶红景天（新疆昌吉产）干药材粉末中有效成分含量。该法仪器及设备简单，操作方便，灵敏度高，结果准确，可作为中药红景天及其制剂质量控制的方法。     

Adaptogenic and central nervous system effects of single doses of 3% rosavin and 1% salidroside Rhodiola rosea L. extract in mice

Rhodiola rosea L., or 'golden root', is a popular plant in traditional medicine in Eastern Europe and Asia, with a reputation for improving depression, enhancing work performance, eliminating fatigue and treating symptoms of asthenia subsequent to intense physical and psychological stress. Due to these therapeutic properties, R. rosea is considered to be one of the most active adaptogenic drugs. To confirm and extend results obtained in the few preclinical and clinical studies available in English language journals, the purpose of the present study was to re-investigate the effects produced by a single oral administration of an R. rosea hydroalcohol extract (containing 3% rosavin and 1% salidroside) on the central nervous system in mice. The extract was tested on antidepressant, adaptogenic, anxiolytic, nociceptive and locomotor activities at doses of 10, 15 and 20 mg/kg, using predictive behavioural tests and animal models. The results show that this R. rosea extract significantly, but not dose-dependently, induced antidepressant-like, adaptogenic, anxiolytic-like and stimulating effects in mice. This study thus provides evidence of the efficacy of R. rosea extracts after a single administration, and confirms many preclinical and clinical studies indicating the adaptogenic and stimulating effects of such R. rosea extracts. Moreover, antidepressant-like and anxiolytic-like activities of R. rosea were shown in mice for the first time.     

红景天微粉与粗粉中有效成分的溶出度比较

目的:探讨红景天微粉(粒径99%以上分布在0～20μm),与粗粉[过50目筛(355±13)μm]体外溶出情况的变化。方法:采用透析法,选取红景天中主要成分没食子酸、红景天苷及儿茶素作为指标,用反相HPLC测定不同时间点红景天微粉和粗粉中这3种成分从透析袋中的溶出情况。结果:红景天微粉中红景天苷和儿茶素溶出的速度及程度均较粗粉有明显提高(15～45 min,P0.05,45～60 min,P0.01),但是没食子酸在2种粉体中的溶出差异并不明显。结论:红景天制成微粉后,能有效改善大部分有效成分的溶出速率和溶出效率,对药物作用有一定的促进作用,但进一步的评价有待于更多的试验数据支持。     

正交试验优选复方红景天口含片中红景天的提取工艺

目的研究复方红景天口含片中红景天最佳提取工艺。方法以红景天苷和酪醇的含量为指标,采用L9（34）正交试验,优选红景天的提取工艺条件。结果影响红景天提取的因素的程度依次为乙醇浓度〉料液比〉提取时间。最佳工艺条件为：8倍量80%的乙醇,提取2次,每次90 min。结论优选的提取工艺简便、可行。     

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??OBJECTIVE To establish a method for simultaneous determination of five components in wild and tissue-culture materials of Rhodiola crenulata. METHODS The determination was performed on a Thermo-C₁₈ column (4.6 mm??250 mm,5 ??m) with mobile phase composed of methanol-water(32??68) at a flow rate of 0.8 mL??min^-1. The injection volume was 10 ??L, column temperature was set at 30 ??, and the detection wavelength was set at 277 nm at 0-13 min and 250 nm at 13-60 min. RESULTS There were linear relationships between the peak areas and contents of salidroside, p-tyrosol, rosarin, rosavin and rosin in the ranges of 2.80-280.00(r=0.999 8), 2.80-280.00(r=0.999 7), 1.20-120.00(r=0.999 6), 1.60-160.00(r=0.999 7) and 1.20-120.00 ??g??mL^-1(r=0.999 7), respectively. The extraction recoveries varied from 99.32% to 100.45%. CONCLUSION The established method is simple and accurate for quality control of wild and tissue-culture materials of Rhodiola.
     

复方酪萨维口腔速崩片中蔷薇红景天提取物的大孔树脂纯化工艺优选

目的：优选大孔树脂纯化复方酪萨维口腔速崩片中蔷薇红景天提取物的工艺条件。方法：以红景天苷、酪萨维的含量及回收率为指标,通过单因素试验筛选大孔树脂型号并优选其纯化工艺。结果：AB-8型树脂分离效果较好,最佳工艺为蔷薇红景天提取物加适量水充分溶解以2 BV·h^-1的流速上样,径高比1：7,红景天苷、酪萨维的比上柱量分别为7.18,10.43 mg·g^-1,水洗除杂,加40%乙醇12 BV洗脱,洗脱流速4 BV·h^-1,树脂可重复利用3次;红景天苷、酪萨维平均提取量分别为1.870%,3.186%,平均回收率分别为82%,96.26%,平均纯度依次为5.72%,9.72%,纯度分别提高了2.51,2.94倍,浸膏得率由纯化前的13.73%减少至4.57%。结论：AB-8型大孔树脂对红景天苷和酪萨维具有良好的纯化效果,优选的工艺稳定可行。     

RP-HPLC法比较青海不同产地红景天属药材中成分组成的差异性

目的:通过研究青海不同产地、不同种的红景天原植物药材中红景天苷和没食子酸的组成成分差异,为全面评价青海红景天属药材质量提供依据。方法:通过反向高效液相色谱法对青海不同产地或不同种的14个红景天样品中红景天苷和没食子酸进行了定量分析,并计算分析各成分间的结构比。结果:不同品种、不同来源的红景天原植物药材中,红景天苷和没食子酸的含量及其组成成分的结构比有较大差异。结论:由于产地、品种的不同,红景天属原植物药材中成分的组成和结构比存在差异性;成分间的结构比的差异性可能是红景天药材药效差异的根本原因,红景天属药材的质量应该从成分量和结构比两方面进行严格控制。     

同时制备克级高纯度酪醇、大花红天素及红景天苷的工艺研究

酪醇、大花红天素及红景天苷3种化合物均是红景天的主要活性成分,具有广泛的药理活性.该实验首次从大花红景天中同时分离出克级高纯度的酪醇、大花红天素及红景天苷,红景天经70％乙醇提取后,以3种化合物的收率为指标,对树脂工艺进行优化筛选,再利用硅胶柱分离纯化,最终同时得到克级高纯度的酪醇、大花红天素及红景天苷,经HPLC测定,3种化合物的纯度均超过98％.该方法工艺简洁、操作简单、有机溶剂用量少、收率及重复率都很高,适合3种化合物的同时制备.     

Reviewing Threats to Wild Rhodiola sachalinensis, A Medicinally Valuable yet Vulnerable Species

Occurring in China, DPR Korea, Japan, and Russian Federation and classified in the Red List of Chinese Flora as a vulnerable species, Rhodiola sachalinensis Boriss. is used increasingly in cosmetics, dietary supplements, and Traditional Chinese Medicines (TCMs). The aim of this study was to evaluate the (i) conservation status, harvesting and trade levels of R. sachalinensis,(ii) current state of experimental and commercial farming, and (iii) evidence of substitution or interchangeable use of R. sachalinensis with other Rhodiola species. We assessed data from multiple disciplines and languages including studies on R. sachalinensis biology and ecology, information on impacts of wild harvest, management measures, and current levels of cultivation. Our assessment shows that while R. sachalinensis is increasingly produced by cultivation, wild populations are decreasing and face multiple threats. These include (a) habitat loss including due to oil and gas infrastructure development on Sakhalin island,(b) climate change impacts on alpine ecosystems, and (c) overexploitation of wild plants to satisfy the growing commercial demand. Assessments of the conservation status of R. sachalinensis should commence in each Range State, as well as resource assessments and monitoring of harvesting and trade of wild R. sachalinensis. Even with increased reliance on cultivation, biodiversity conservation, and genetic diversity in wild populations are relevant to future use of this species.     

冀产红景天的生药鉴定

本文对冀产红景天属的三种药用植物红景天Ｒｈｏｄｉｏｌａ ｒｏｓｅａ；狭叶红景天Ｒ．ｋｉｒｉｌｏｗｉｉ；小丛红景天Ｒ．ｄｕｍｕｌｏｓａ进行了性状、显微与紫外光谱鉴别。     

狭叶红景天的化学成分

从狭叶红景天根茎的醇提物中分离得到5个化合物,经理化和光谱分析鉴定为酪醇,胡萝卜甙,百脉根甙,红景天甙,蔗糖。