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In vitro anticancer potential of Semecarpus anacardium Linn 心菖蒲体外抗癌潜力的研究
Pub Date : 2016-01-01 DOI: 10.4103/2394-6555.180167
Md. Nasar Mallick, W. Khan, Mhaveer Singh, Mohd. Zeeshan Najm, M. Kashif, Sayeed Ahmad, S. Husain
Background: Keeping in view the toxicity of Semecarpus anacardium Linn. as reported in the traditional literature, the present study was carried out to evaluate the in vitro cytotoxic activity of ethanolic extract of Semecarpus on two different cell lines. Materials and Methods: The ethanolic extract of Semecarpus was prepared using cold extraction method. The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay of ethanolic extract was carried out on HeLa and SiHa cell lines for determination of cytotoxicity. Results: The IC50values of ethanolic extract of S. anacardium in HeLa and SiHa cell lines were 44.0 μg/ml and 57.0 μg/ml, respectively. The extract was standardized by thin-layer chromatography and Gas chromatography-mass spectrometry. Conclusion: The results showed good cytotoxic activity in the ethanolic extract of S. anacardium in both the cell lines may be due to the presence of toxic flavones.
背景:考虑到半仙人掌的毒性。根据传统文献的报道,本研究对半仙人掌乙醇提取物对两种不同细胞系的体外细胞毒活性进行了研究。材料与方法:采用冷浸法制备半山竹醇提物。采用3-(4,5-二甲基噻唑-2-基)-2,5-二苯基溴化四唑乙醇提取物对HeLa和SiHa细胞株进行细胞毒性测定。结果:心梗草醇提物对HeLa和SiHa细胞株的ic50值分别为44.0和57.0 μg/ml。采用薄层色谱、气相色谱-质谱联用技术对提取液进行标准化。结论:心梗草醇提物对两种细胞系均有良好的细胞毒活性,可能是由于其含有毒性黄酮所致。
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引用次数: 5
Doxorubicin prodrug for cytoplasmic and nuclear delivery in breast cancer cells 阿霉素前药在乳腺癌细胞的细胞质和核传递
Pub Date : 2016-01-01 DOI: 10.4103/2394-6555.180158
Animikh Ray, K. Cholkar, Ravinder Earla, A. Mitra
Purpose: The objective of this study was to develop a novel peptide prodrug of doxorubicin which can evade over-expressed efflux pumps in breast cancer cells. This approach may lead to increased uptake and higher drug accumulation in nuclei of cancer cells. Materials and Methods: L-val-L-val doxorubicin prodrug was synthesized following standard f-moc chemistry. The prodrug was analyzed for stability, cellular and nuclear uptake and interaction with efflux and peptide transporters. Breast cancer cells (T47D) were grown on polystyrene 12-well plates. Result: The prodrug Val-Val-doxorubicin was found to be very stable in breast cancer cell homogenate. It was able to evade efflux pumps. The prodrug penetrated cytoplasm and nucleus of cancer cells by interacting with peptide transporters.These transporters (pepT1 and pepT2) are expressed both on plasma and nuclear membrane of breast cancer cells. Uptake of prodrug was found to be 10 times more than parent drug. Conclusion: Peptide prodrug derivatization of doxorubicin has potential to evade efflux pumps and increase availability and nuclear accumulation of doxorubcin in breast cancer cells.
目的:本研究的目的是开发一种新的多肽前药阿霉素,它可以逃避乳腺癌细胞中过表达的外排泵。这种方法可能导致增加摄取和更高的药物积累在细胞核的癌细胞。材料与方法:采用标准f-moc化学方法合成左旋-左旋阿霉素前药。分析了前药的稳定性、细胞和核摄取以及与外排和肽转运体的相互作用。乳腺癌细胞(T47D)在聚苯乙烯12孔板上生长。结果:发现前药val - val -阿霉素在乳腺癌细胞匀浆中非常稳定。它能够避开外排泵。前药通过与肽转运体相互作用穿透细胞质和细胞核。这些转运蛋白(pepT1和pepT2)在乳腺癌细胞的血浆和核膜上均有表达。发现前药的摄取是母体药物的10倍。结论:多柔比星的肽前药物衍生化有可能逃避外排泵,增加多柔比星在乳腺癌细胞中的可用性和核积累。
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引用次数: 3
Strain improvement of Phaffia rhodozyma for astaxanthin production 法菲酵母产虾青素的菌种改良
Pub Date : 2016-01-01 DOI: 10.4103/2394-6555.180169
H. Nangia, Mojeer Hasan, Mohd. Azhar, P. Bhatt, B. Panda
Objective: The aim of the present study is to evaluate and optimize different carbon sources at different temperatures in shake flask for cell growth and astaxanthin accumulation in ultraviolet (UV) mutant Phaffia rhodozyma. The focus is to make the process cost-effective and fruitful with higher productivity. Materials and Methods: Adaptive strain development was carried out so that the P. rhodozyma can give the best astaxanthin at a higher temperature (35°C), increasing the process economy. P. rhodozyma was cultivated with three broad spectrum antibacterial drugs - streptomycin, gentamycin, and ampicillin (200 μL) and with antifungal drug - fluconazole (200 μL) to determine the effect on yeast growth and astaxanthin production. Rice, cane juice, and sucrose were selected as carbon source and compared with dextrose at different fermentation temperatures - 22°C, 30°C, 33°C, and 35°C for astaxanthin production. Results: P. rhodozyma was resistant to antibiotic drugs inhibiting bacterial and fungal contaminants. Rice being more economical was selected as carbon source, but the strain was not able to utilize starch-rich substrate leading to its rejection. When P. rhodozyma was grown in cane juice, biomass is highest (OD 2.77) at 30°C and 610 nm wavelength, whereas astaxanthin productivity is highest (OD 2.64) in dextrose media at 30°C and 450 nm. Comparative metabolic and growth results for UV mutants showed significantly higher biomass and astaxanthin productivity in comparison to wild strain. Conclusion: The most efficient carbon source in terms of penny-pinching and astaxanthin productivity was found to be dextrose containing media at 30°C.
目的:研究不同温度下不同碳源对紫外突变体法菲红酵母细胞生长和虾青素积累的影响。重点是使该过程具有成本效益和更高的生产率。材料与方法:采用自适应菌株培养,使P. rhodozyma在较高温度(35℃)下产生最佳虾青素,提高了工艺经济性。采用广谱抗菌药物链霉素、庆大霉素和氨苄西林(200 μL)和抗真菌药物氟康唑(200 μL)培养红酵母,测定其对酵母生长和虾青素产量的影响。以大米、甘蔗汁和蔗糖为碳源,在22℃、30℃、33℃和35℃的不同发酵温度下,与葡萄糖进行虾青素产量的比较。结果:红土酵母菌对抗菌药物具有耐药性,能抑制细菌和真菌的污染。选择了较为经济的水稻作为碳源,但菌株无法利用富含淀粉的基质,导致拒收。酵母在甘蔗汁中生长时,在30°C和610 nm波长下的生物量最高(OD值2.77),而在30°C和450 nm的葡萄糖培养基中虾青素产量最高(OD值2.64)。紫外突变体的代谢和生长比较结果表明,与野生菌株相比,紫外突变体的生物量和虾青素产量显著提高。结论:在30°C条件下,含葡萄糖培养基是虾青素产率最高的碳源。
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引用次数: 4
Standardization of Unani polyherbal formulation, Qurse-e-Hummaz: A comprehensive approach 乌拉尼复方的标准化:综合方法
Pub Date : 2016-01-01 DOI: 10.4103/2394-6555.180161
Y. Kamal, Mhaveer Singh, Shahana Salam, S. Ahamd
Background: An increase in the awareness about the advantages of the traditional system of medicines has led to the commercialization of the formulations used for the treatments. Manufacture of these medicines to meet this increasing demand has resulted in a decline in their quality, primarily due to a lack of adequate regulations pertaining to this sector of medicine. Hence, it is necessary to come up with a systematic approach to develop well-designed methodologies for the standardization of polyherbal formulations which are used in traditional systems of medicine. Materials and Methods: Qurs-e-Hummaz formulations were prepared by a qualified “Hakim” (Unani medical practitioner) of Faculty of Unani Medicine, Hamdard University, as per the formula and instruction given in National Formulary of Unani Medicine. Results: Various quality control parameters such as organoleptic evaluations (color, odor, taste, and consistency), physicochemical evaluations (loss on drying, disintegration time, moisture content, total ash, acid insoluble ash, water soluble ash, pH of 1 and 10% solution, extractive values, water soluble matter, alcohol-soluble matter, and total phenolic content) and thin layer chromatography fingerprint profiling have been carried out in triplicate. The evaluation of contaminants such as heavy metals, aflatoxins, pesticide residues, and microbial contamination has also been carried out in the formulation. Conclusion: Help in maintaining the quality and batch to batch consistency of many important polyherbal formulations.
背景:对传统药物体系优势的认识的提高导致了用于治疗的配方的商业化。为满足这一日益增长的需求而生产这些药物,导致其质量下降,主要原因是缺乏与这一医药部门有关的适当法规。因此,有必要提出一种系统的方法,开发设计良好的方法,用于传统医学系统中使用的多草药配方的标准化。材料和方法:quurs -e- hummaz配方由Hamdard大学乌纳尼医学院合格的" Hakim "(乌纳尼医生)根据《乌纳尼国家医药处方》中的配方和说明配制。结果:各质量控制参数,如感官评价(颜色、气味、味道、稠度)、理化评价(干燥损失、崩解时间、水分含量、总灰分、酸不溶灰分、水溶性灰分、1和10%溶液pH值、萃取值、水溶性、醇溶物、总酚含量)和薄层色谱指纹图谱等均进行了三份。在配方中还对重金属、黄曲霉毒素、农药残留、微生物污染等污染物进行了评价。结论:有助于保持多种重要复方制剂的质量和批间一致性。
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引用次数: 0
First in human trials: Are there any benefits of including placebo treatments? 首先在人体试验中:包括安慰剂治疗是否有任何好处?
Pub Date : 2016-01-01 DOI: 10.4103/2394-6555.180155
A. Agyeman, R. Ofori-Asenso
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引用次数: 2
Quantification of vasaka alkaloids in in vitro cultures and in natural leaves from Indian subcontinents by reversed phase- high performance liquid chromatography 用反相高效液相色谱法定量测定印度次大陆天然叶片和体外培养物中的vasaka生物碱
Pub Date : 2016-01-01 DOI: 10.4103/2394-6555.180165
Sayeed Ahmad, Madhukar Garg, E. Tamboli, Y. Kamal, S. Ansari
Background: The present study was designed to develop an efficient protocol for studying the enhancement of in vitro production of secondary metabolites in Adhatoda vasica leaves collected from the varied geographical locations of Indian sub-continents by a validated simultaneous high-performance liquid chromatography gradient method for the quantification of vasicine and vasicinone in the developed calli and crude samples. Materials and Methods: The analysis was carried out on a reverse phase C18column using 0.1% of orthophosphoric acid: Acetonitrile in gradient manner and carried out the detection at 280 nm wavelength keeping the flow rate of 1.0 mL/min. Results: The simultaneous method was found linear with regression coefficient r2 = 0.991 in a wide range (100–500 μg/mL) precise, accurate, and robust for quinazoline alkaloids in samples. Results clearly showed a significant increase in the concentration of alkaloids in in vitro cultures as compared to natural ones. The proposed method was validated as per the International Conference on Harmonization guidelines for accuracy, precision, robustness, limit of detection, and limit of quantitation. Conclusion: The developed method was found suitable for quality control of A. vasica and for the analysis of vasicine and vasicinone in any type of sample.
背景:本研究旨在通过高效液相色谱梯度法同时定量成熟愈伤组织和粗样品中水仙花碱和水仙花苷的含量,建立一种有效的方案来研究印度次大陆不同地理位置的水仙花叶片中次生代谢物的体外生产。材料与方法:色谱柱为c18反相色谱柱,流速为1.0 mL/min,流速为280 nm,正磷酸乙腈浓度为0.1%,梯度检测。结果:该方法在100 ~ 500 μg/mL范围内线性良好,回归系数r2 = 0.991,精密度高,准确度高,稳健性好。结果清楚地表明,与天然培养物相比,体外培养物中生物碱的浓度显著增加。根据国际协调会议的准确性、精密度、鲁棒性、检出限和定量限准则对所提出的方法进行了验证。结论:所建立的方法可用于瓦西里药材的质量控制和瓦西里素及瓦西里酮的分析。
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引用次数: 4
Quality control analysis of Khamira Abresham Hakim Arshad Wala and Khamira Marwareed
Pub Date : 2016-01-01 DOI: 10.4103/2394-6555.180164
M. Khan, W. Khan, W. Ahmad, Mhaveer Singh, Sayeed Ahmad
Background: Unani system of medicine is based on the principles proposed by Galen, a Greek practitioner. Since then, many Arab and Persian scholars have contributed to the system. Among them, Ibn-e-Sina, an Arab philosopher and Physicist, who wrote “Kitab-al-shifa” are worth mentioning. This system has an extensive and inspiring record in India. Khamira Abresham Hakim Arshad Wala (KAHAW) and Khamira Marwareed (KM) are semisolid sugar-based preparations with potent cardiac tonic and well-known antioxidant properties. It has been studied that therapeutic intervention of KAHAW may be used to prevent or to decrease the deterioration of cognitive function and neurobehavioral activities, often associated with the generation of a free radical. However, no considerable attempt has been made for quality evaluation of KAHAW. Materials and Methods: In the present investigations, KAHAW and KM were evaluated for their phytochemical screening, physicochemical standards, presence of minerals, contaminants such as aflatoxins, pesticide residues, thin layer chromatography, and high performance thin layer chromatography (HPTLC) as per WHO and AYUSH guidelines for development of quality standards, which can be used by Unani industries. Results: Physicochemical parameters of the prepared compound formulation KAHAW and KM were studied such as total ash, acid insoluble ash, water soluble ash, solubility matter in alcohol and water, and loss on drying at 105°C, pH as per the methods described in WHO guidelines. The heavy metal, aflatoxins, and pesticide residues were also determined for safety evaluation. The total phenolic and flavonoid contents were estimated using catechin and quercetin as standard after preparing calibration plot, respectively. HPTLC fingerprinting of hydrolyzed chloroform extracts of KAHAW and KM was carried out to determined a number of spots present in them. Conclusions: This study on pharmacognostical standardization of KAHAW and KM will provide useful information for its identification and quality control and can be applied by different manufacturers of these formulations.
背景:Unani医学系统是基于希腊医生Galen提出的原则。此后,许多阿拉伯和波斯学者对这一体系做出了贡献。其中值得一提的是阿拉伯哲学家、物理学家伊本·西那(Ibn-e-Sina),他写了《Kitab-al-shifa》。这一制度在印度有着广泛而鼓舞人心的记录。Khamira Abresham Hakim Arshad Wala (KAHAW)和Khamira Marwareed (KM)是半固体糖基制剂,具有强效的心脏滋补和众所周知的抗氧化特性。已有研究表明,KAHAW的治疗干预可用于预防或减少认知功能和神经行为活动的恶化,这些退化通常与自由基的产生有关。然而,对KAHAW的质量评价还没有进行大量的尝试。材料和方法:在本研究中,根据WHO和AYUSH质量标准制定指南,对KAHAW和KM进行了植物化学筛选,理化标准,矿物质,黄曲霉毒素等污染物,农药残留,薄层色谱和高效薄层色谱(HPTLC)的存在进行了评估,可用于Unani工业。结果:按照WHO指南的方法,研究了所制复方KAHAW和KM的理化参数:总灰分、酸不溶灰分、水溶性灰分、醇和水的溶解度、105℃、pH下干燥损失。同时对重金属、黄曲霉毒素和农药残留进行了安全性评价。以儿茶素和槲皮素为标准品,分别制备校正图,测定总酚和类黄酮含量。对KAHAW和KM的氯仿水解提取物进行了HPTLC指纹图谱分析,确定了其中存在的一些斑点。结论:本研究为中药复方的鉴别和质量控制提供了参考依据,可为不同生产厂家的中药复方提供参考。
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引用次数: 0
Quality control of an antipsoriatic ayurvedic herbal Formulation: Lajjalu Keram 抗银屑病的阿育吠陀草药制剂拉佳露克兰的质量控制
Pub Date : 2016-01-01 DOI: 10.4103/2394-6555.180162
M. Athar, S. Musthaba, A. Al-Asmari, S. Baboota, J. Ali, Sayeed Ahmad
Background: Psoriasis is an autoimmune disorder, which affects a large group of human population of world (3%). Till date, there is no treatment for psoriasis except some herbal drugs and its constituents. Since Ayurveda is the main traditional system of medicine in India, here, we have selected one ayurvedic formulation - Lajjalu Keram, which has been used since long for their quality control. Methods: Total microbial load of formulations were carried out for total fungal count and total bacterial count. Lajjalu Keram was also tested by high-performance liquid chromatographic (HPLC) for aflatoxins (B1, B2, G1, and G2), which showed its presence below the permissible limit; similarly, pesticides residues were analyzed using gas chromatography/mass spectrometry for organophosphates and organochlorides, which showed that pesticides were below detection limit (0.1 ppb). The content of heavy metals was analyzed using AAS, which demonstrated the presence of cadmium, lead, and arsenic below permissible limit, whereas mercury was found absent. Results: The result of quality control analysis showed the presence of alkaloids, tannins, carbohydrate, saponins, proteins and amino acids, lipid/fats, phenolic compounds, and flavonoids in formulation. The dermal toxicity (LD50) of Lajjalu Keram in Wistar rats was found more than 2000 mg/kg (safe for the management of psoriasis). Formulation was also analyzed for their composition of fatty acids. It was found to have 13 fatty acids, out of which, seven were saturated fatty acids (95.2%) and the rest were unsaturated fatty acids (3.27%). A rapid HPLC method for quantification of mimosine (an unusual amino acid present in formulation) has been developed and validated. The mimosine content in Lajjalu Keram was found to be 0.0070% w/w with % relative standard deviation of 0.41. Conclusion: The formulation afforded significant and better protection of carrageenan-induced rat paw edema (72.11% inhibition) as compared to control. The shelf life studies on antipsoriatic herbal formulations were carried out for 6 months at different time intervals. No significant variation in analysis parameters was observed on the storage of formulations up to 6 months. The assay of constituents using mean curve of sigma plot showed 44.2 month of shelf life for Lajjalu Keram.
背景:牛皮癣是一种自身免疫性疾病,影响着世界上大量人群(3%)。迄今为止,除了一些草药及其成分外,没有治疗牛皮癣的方法。由于阿育吠陀是印度主要的传统医学体系,在这里,我们选择了一种阿育吠陀配方——Lajjalu Keram,它在质量控制方面已经使用了很长时间。方法:采用总微生物负荷法测定制剂的真菌总数和细菌总数。高效液相色谱法检测黄曲霉毒素(B1、B2、G1、G2)含量均低于允许限量;同样,使用气相色谱/质谱法对有机磷和有机氯进行了农药残留分析,结果表明农药残留量低于检测限(0.1 ppb)。采用原子吸收光谱法分析重金属含量,镉、铅、砷均低于允许限量,汞未检出。结果:质量控制分析结果显示,制剂中含有生物碱、单宁、碳水化合物、皂苷、蛋白质和氨基酸、脂质/脂肪、酚类化合物和黄酮类化合物。对Wistar大鼠的皮肤毒性(LD50)大于2000 mg/kg(治疗牛皮癣安全)。配方中脂肪酸的组成也进行了分析。其中,7种为饱和脂肪酸(95.2%),其余为不饱和脂肪酸(3.27%)。建立并验证了一种快速高效液相色谱法定量胺莫辛(配方中存在的一种不寻常的氨基酸)。结果表明,枇杷中含糖量为0.0070% w/w,相对标准偏差为0.41。结论:该制剂对卡拉胶诱导的大鼠足跖水肿有较好的保护作用(抑制率为72.11%)。以不同的时间间隔对抗银屑病中药制剂进行了为期6个月的保质期研究。在制剂储存6个月时,分析参数无显著变化。利用西格玛图平均曲线对成分进行分析,结果表明,枇杷的保质期为44.2个月。
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引用次数: 0
Antimicrobial activity of sugar-based semisolid polyherbal ayurvedic formulation: Chyawanprash 糖基半固体阿育吠陀复方的抗菌活性:Chyawanprash
Pub Date : 2016-01-01 DOI: 10.4103/2394-6555.180159
M. Khan, Satyajyoti Kanjilal, Arun Gupta, Sayeed Ahmad
Objective: This study evaluated the antimicrobial activity of chloroform (CHCl3) extracts of chyawanprash (Dabur India Ltd., Uttar Pradesh, India) and hydrolyzed chyawanprash against Escherichia coli and Staphylococcus aureus on nutrient agar media using cup plate method. Materials and Methods: CHCl3extracts of chyawanprash were prepared directly as well as by previously hydrolyzing with dilute HCl. Three test groups of 10, 20, and 50 mg/ml were prepared for each CHCl3extract, whereas ampicillin 20 mg/ml was used as standard group. Further, six agar plates were prepared for each group, i.e., three for E. coli and three for S. aureus. Cups were bored on each plate with the help of steel cup borer and cups on each plate were marked for identification. Extracts of different concentrations (i.e., 10, 20, and 50 mg/ml) were poured into cups and all plates were then incubated at 37°C for 48 h. After incubation, plates were observed for bacterial growth and zone of inhibition were measured. Results: Results showed that both CHCl3as well as hydrolyzed CHCl3extract of chyawanprash showed concentration-dependent antimicrobial activity. The largest zone of inhibition was observed at the concentration of 50 mg/ml of both CHCl3extracts of chyawanprash (12.7 ± 1.5 mm for E. coli and 15.0 ± 1.0 mm for S. aureus) and hydrolyzed chyawanprash (14.3 ± 0.6 mm for E. coli and 16.3 ± 0.6 mm for S. aureus). Conclusion: Chyawanprash possesses promising potential for use as an antimicrobial agent.
目的:采用杯盘法,对chyawanprash (Dabur India Ltd, Uttar Pradesh, India)的氯仿(CHCl3)提取物和水解chyawanprash在营养琼脂培养基上对大肠杆菌和金黄色葡萄球菌的抑菌活性进行研究。材料与方法:采用盐酸预水解法和直接制备chcl3提取物。以氨苄西林20 mg/ml为标准组,每个chcl3提取物分别配制10、20、50 mg/ml 3个试验组。此外,每组准备6个琼脂板,即大肠杆菌3个,金黄色葡萄球菌3个。利用钢杯镗孔机在每个板上钻孔,并在每个板上标记杯子以进行识别。将不同浓度(10、20、50 mg/ml)的提取物倒入杯中,37℃孵育48 h,孵育后观察培养皿细菌生长情况,测定抑菌带。结果:chcl3及chcl3水解提取物的抑菌活性均呈浓度依赖性。chcl3提取物(大肠杆菌为12.7±1.5 mm,金黄色葡萄球菌为15.0±1.0 mm)和水解的chcl3提取物(大肠杆菌为14.3±0.6 mm,金黄色葡萄球菌为16.3±0.6 mm)浓度均为50 mg/ml时,抑制区最大。结论:川芎嗪作为抗菌药物具有广阔的应用前景。
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引用次数: 3
Simultaneous determination of 18α-glycyrrhetinic acid and 18β-glycyrrhetinic acid in Glycyrrhiza glabra root by reversed phase high-performance liquid chromatography 反相高效液相色谱法同时测定甘草根中18α-甘草次酸和18β-甘草次酸的含量
Pub Date : 2016-01-01 DOI: 10.4103/2394-6555.180168
Ambika Chamoli, Makhmur Ahmad, Mojeer Hasan, B. Panda
Background: The aim of the present research work is to develop a high-performance liquid chromatography (HPLC) method for simultaneous analysis of 18α-glycyrrhetinic acid (18α-GA) and 18β-GA (18β-GA) of Glycyrrhiza glabra. Materials and Methods: About 20 μL aliquots of each 18α-GA and 18β-GA were analyzed using reversed-phase C-18 column. The mobile phase was acetonitrile:tetrahydrofuran:water (10:80:10, v/v/v). The run time was 10 min at flow rate of 1 ml/min. Ultraviolet detection was carried out at 254 nm. Results: 18α-GA and 18β-GA were well resolved in reversed phase C-18 column using mobile phase acetonitrile: tetrahydrofuran: water (10:80:10, v/v/v, pH 7.9). The Rtof 18α-GA and 18β-GA was detected at 2.091 and 2.377 min, respectively. Conclusion: The developed chromatography method could be extended for potential quantification or simultaneous determination of these markers in plant as well as in herbal formulation.
背景:建立高效液相色谱(HPLC)同时分析甘草中18α-甘草次酸(18α-GA)和18β-GA (18β-GA)的方法。材料与方法:采用C-18反相色谱柱分析18α-GA和18β-GA各20 μL的含量。流动相为乙腈:四氢呋喃:水(10:80:10,v/v/v)。运行时间为10min,流速为1ml /min。紫外检测波长为254 nm。结果:18α-GA和18β-GA在反相C-18色谱柱中分离良好,流动相乙腈:四氢呋喃:水(10:80:10,v/v/v, pH 7.9)。18α-GA和18β-GA的Rtof分别在2.091和2.377 min检测到。结论:所建立的色谱方法可用于植物及中药制剂中这些标记物的定量或同时测定。
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引用次数: 2
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Drug Development and Therapeutics
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