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Objective To establish an HPLC method for the simultaneous determination of hydroxysafflor yellow A, rutin, quercetin, and kaempferol in Carthamus tinctorius L..Methods The Agilent ZORBAX SB-C18 column (4.6 mm × 250 mm, 5 μm) was used with diode array detection. The mobile phase was 0.5% phosphoric acid (A) and methanol (B) to separate the four components by gradient elution at 30℃; the flow rate was 0.8 mL/min; the injection Volume was 10 μL; the detection wavelength was at 360 nm.Results The linear ranges of hydroxysafflor yellow A, rutin, quercetin, and kaempferol were 0.0776–0.7760 μg (r=0.9999), 0.0460–0.4600 μg (r=0.9996), 0.0064–0.0640 μg (r=0.9999) and 0.0128–0.1280 μg (r=0.9997), respectively. The average recoveries of four components were 99.68% with RSD=2.29% (n=6), 99.78% with RSD=1.52% (n=6), 102.03% with RSD=1.02% (n=6), 97.03% with RSD=2.05% (n=6), respectively.Conclusion The method is convenient, accurate, sensitive, stable and repeatable, which can be a method for quality control of Carthamus tinctorius L..
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Objective To analyze and compare the Eucommia ulmoides leaves from different producing areas by IR;To establish a TLC method for identification of Eucommia ulmoides leaves;To provide a reference for its quality control. Methods The characteristic absorption peaks were identified and the positions and intensities of Eucommia ulmoides leaves from 6 producing areas were compared by IR and second derivative spectrum, including clustering analysis; Separation and identification of the active components in Eucommia ulmoides leaves were conducted by TLC. Results There a difference exited in the characteristic absorption peaks in peakshapes, positions and intensities. And the samples from 6 producing areas could be divided into one category. Results found 6 batches of sample spots of consistent by TLC, but between samples of different producing areas trace components spots existed differences. Conclusion The two methods are direct, simple, fast and convenient, which can provide a reliable evidence for identification and quality control of the Eucommia ulmoides leaves.
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Objective To extract high quality genomic DNA of Cordia dicholoma seeds by using different methods;To provide references for researches on genomic DNA of Cordia dicholoma seeds. Methods Genomic DNA of Cordia dicholoma seeds was extracted through improved CTAB method and improved SDS method. Purity and concentration of obtained DNA were detected by spectrophotometry and agarose gel electrophoresis. Results The results of spectrophotometry showed that the purity of genomic DNA obtained through improved CTAB method was better than improved SDS method. Genomic DNA extracted through improved CTAB method was without protein and RNA pollution. The results of agarose gel electrophoresis showed that electrophoresis of genomic DNA obtained through the two methods both had the main belt. However, genomic DNA extracted through improved SDS method degraded more than improved CTAB method. Conclusion Improved CTAB method can obtain relatively high quality genomic DNA of Cordia dicholoma seeds.
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Objective To dertermine the content of gallic acid, methyl gallate and ellagic acid in galls of Quercus infectoria Olivier from different batches by HPLC. Methods The chromatogram colume was Agilent Zorbax SB-C18(4.6 mm × 250 mm, 5μm), gradiently eluting with methanol as mobile phase A and 0.01%phosphoric acid as B at a flow rate of 1 ml/min. The injection Volume was 5 μl. Detection wavelength was at 258 nm. Results Gallic acid was linear in the range of 0.0318-0.1871 g/L with correlation coefficient of 0.9994. The average recovery was 97.52%with RSD 1.41%. Methyl gallate was linear in the range of 0.0769-0.4612 g/L with correlation coefficient of 0.9994. The average recovery was 99.15% with RSD at 1.46%. Ellagic acid was linear in the range of 0.0158-0.0553 g/L with correlation coefficient of 0.9998. The average recovery was 102.75% with RSD at 0.87%. Conclusion The method is convenient, fast, accurate and practicable, and can be used for controling the quality of the galls of Q. infectoria.
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Objective To analyze and compare the essential oil ofZiziphora clinopodioides Lam. from different regions in Xinjiang by infrared spectroscopy;To provide a reference for its identification and quality control.Methods Characteristic absorption peaks ofZiziphora clinopodioides Lam. essential oil from 18 regions in Xinjiang Uygur autonomous region were identified, compared and analyzed according to peaks’ shapes, positions and intensities by infrared spectroscopy, second derivative infrared spectroscopy and clustering analysis.Results Differences exist in the characteristic absorption peaks according to peaks’ shapes, positions and intensities. And then the samples from 18 regions can be divided into four categories.Conclusion This method was direct, simple, fast and convenient. Combining with clustering analysis, It could provide a reliable evidence for identification and quality control ofZiziphora clinopodioides Lam..
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Objective To establish an HPLC method for the content determination of gallic acid and kaempferol-3-O-rutinoside inNymphaea candida Presl..MethodsThe separation was carried out on a Wondasil C18 column (250 mm×4.6 mm, 5μm). The mobile phase was methanol-0.1% acetic acid solution, with gradient elution;the flow rate was 1.0 mL/min;the detection wavelength was set at 270 nm;the column temperature was 30℃.Results The linear ranges of gallic acid and kaempferol-3-O-rutinoside were 0.065-0.585μg (r=0.999 1), 0.133-1.197μg (r=0.999 5), respectively. The average recoveries of gallic acid and kaempferol-3-O-rutinoside were 102.71%, 102.08%, with RSD of 1.97%, 0.46%, respectively.Conclusion This method was rapid, accurate, and reliable. It can be used for the determination of allic acid and kaempferol-3-O-rutinoside in Nymphaea candidaPresl..
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This study aims to determine the phytochemical composition and antioxidant activity of air-dried Cordia dichotoma seeds. Total polyphenolic content was analyzed via the Folin-Ciocalteu method. Total triterpenoid content and amino acids was analyzed colorimetrically
The rosmarinic acid content was examined using high-performance liquid chromatography tandem mass spectrometry
The ethanolic extracts contained polyphenolic compounds [1.0%], triterpenoids [0.075%], amino acids [1.39%], and rosmarinic acid [0.0028%]. The results from this study indicate that C. dichotoma seeds are a rich source of polyphenolic compounds and amino acids, which can be used for quality assessment. The ethanolic extract of C dichotoma seeds has good antioxidant capacity
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<p><b>OBJECTIVE</b>To explore the physical and behavioral, microscopic and chemical characteristic traits of Brassica rapa, and supply scientific bases for establishing its quality control standard.</p><p><b>METHOD</b>Microscopic identification method was adopted to observe the microscopic characters of ten batches crude drugs, the contents of water, impurity, total ash, insoluble acid ash and extractives were detected based on Chinese Pharmacopoeia (2010) , and the oil constituents were analyzed by gas chromatography-mass spectrometry (GC-MS).</p><p><b>RESULT</b>The microscopic traits were cotyledon, palisade cells, non-glandular hairs and inner endosperm, while the palisade cells, cotyledon cells and non-glandular hairs existed in its powders. The results confirmed the contents of water, impurity, total ash and insoluble acid ash should be fewer than 6%, 4.5%, 6%, 0.7%, while the content of extractives should exceed 11%. The main oil compounds in it were erucic acid, oleic acid and gamma-sitosterol through the GC-MS analysis.</p><p><b>CONCLUSION</b>The experimental methods were accurate and reliable, and the indexes and parameters may be thought as the quality standards for B. rapa.</p>
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Brassica rapa , Chemistry , Drugs, Chinese Herbal , Reference Standards , Quality Control , Seeds , ChemistryABSTRACT
<p><b>OBJECTIVE</b>To analysis the changes of chemical compounds in fried Foeniculum vulgare.</p><p><b>METHOD</b>Cleaned F. vulgare were fried with honey, Pharbitis nil, salt solution, vinegar, wine and bran, respectively, according to different Chinese medicine frying theories. Different volatile ingredints were extracted from fried products, and their contents and physical constants were detected. Gas chromatography-mass spectrometry (GC-MS) was developed for analyzing the changes of chemical compounds in different samples of fried F. vulgare.</p><p><b>RESULT</b>The experimental results showed that the content of volatile oil in F. vulgare decreased after been fried. Among these effective ingredients in fried samples, trans-anethole was the ingredient of the maximum content, and the contents of all twenty-four ingredinets had changed. Furthermore, other eighteen compounds were created; Among them, linalylacetate, farnesene, p-allyiphenyl aromatic oxide, menthone, and hexyl octanoate were detected firstly in F. vulgare.</p><p><b>CONCLUSION</b>GC-MS is effective to fleetly analyse the frying changes of herbs flectly.</p>