Abstract: Two novel triterpenes (1 and 2) were isolated from the orchid Pholidota yunnanensis Rolfe. Using chemical and spectral analyses (UV, IR, MS,1D-NMR and 2D-NMR), these two triterpenes were established as 25-me...Abstract: Two novel triterpenes (1 and 2) were isolated from the orchid Pholidota yunnanensis Rolfe. Using chemical and spectral analyses (UV, IR, MS,1D-NMR and 2D-NMR), these two triterpenes were established as 25-methylenecyclopholidonyl p-hydroxy-trans-cinnamate (1; named pholidotine A) and 25-methylenecyclopholidonyl p-hydroxy-cis-cinnamate (2; named pholidotine B).展开更多
[Objectives] This study was conducted to establish a characteristic fingerprinting research method for the chemical constituents of the Zhuang medicine Pholidota cantonensis Rolfe.and its characteristic fingerprint of...[Objectives] This study was conducted to establish a characteristic fingerprinting research method for the chemical constituents of the Zhuang medicine Pholidota cantonensis Rolfe.and its characteristic fingerprint of chemical constituents,in order to identify P.cantonensis.[Methods] Ten batches of P.cantonensis from different habitats in Guangxi and out of Guangxi (Shaoguan of Guangdong Province) were determined.The materials were extracted in 80% methanol ultrasonically for 1.5 h under the material-to-liquid ratio of 2.5 g/80 ml.The HPLC determination was carried out using an Agilent 1260 HPLP instrument equipped with an Agilent5 TC-C18 (2) column at the column temperature of 30 ℃,the wavelength of 280 nm and the injection volume of 10 μl using acetonitrile-0.4% phosphoric acid as the mobile phase and chlorogenic acid as the reference peak,and the detection took 58 min.[Results] The characteristic fingerprint of the chemical constituents of P.cantonensis were obtained,and the three chromatographic peaks of gallic acid,chlorogenic acid and syringaldehyde were compared.[Conclusions] This study can provide reference for the identification of the Zhuang medicine P.cantonensis and provide guarantee for the clinical use of Chinese medicine.展开更多
Research progress of pharmacognostical identification and chemical composition of Pholidota cantonensis Rolfe. was reviewed. This paper will facilitate assurance of the safety of clinical treatment.
[Objectives]Pharmacognosy identification was performed on Xiaohuangcao ( Dendrobium loddigesi Rolfe).[Methods]The medicinal materials were identified through original plants,characters,microscopic structure and thin-l...[Objectives]Pharmacognosy identification was performed on Xiaohuangcao ( Dendrobium loddigesi Rolfe).[Methods]The medicinal materials were identified through original plants,characters,microscopic structure and thin-layer identification characteristics.[Results]D.loddigesi has obvious plant morphology,characters,microscopic structure and thin-layer identification characteristics.The stem of Xiaohuangcao is slender and cylindrical,and the surface is golden yellow;and the fiber bundles outside the vascular bundles are crescent-shaped or semi-circular in the stem transection.For the powder,crystal fiber can be observed;the vascular bundles are embedded with siliceous block cells;and there are more starch grains.In the thin layer chromatography,petroleum ether-ethyl acetate-butanone-glacial acetic acid (8.5∶ 3.5∶ 1.5∶ 5 d) was used as a developing solvent,and 10% sulfuric acid ethanol solution was used as a color developing agent.[Conclusions]The research results provide reference for the application of the medicinal material and the formulation of its related quality standards.展开更多
[Objective] By using the genomic DNA of Cymbidium faberi Rolfe as template,the factors that affect the result of ISSR-PCR reaction system were researched and the optimal system was established.[Method] The genomic DNA...[Objective] By using the genomic DNA of Cymbidium faberi Rolfe as template,the factors that affect the result of ISSR-PCR reaction system were researched and the optimal system was established.[Method] The genomic DNA was extracted from C.faberi Rolfe with method of modified CTAB.Different factors which affected ISSR amplification reaction were optimized.[Result] High-quality genomic DNA was obtained from C.faberi Rolfe.And the optimal reaction system was as follows：25 μl amplification reactions system contained 2.5 μl 10 × PCR buffer,2.0 mmol/L MgCl2,60 ng template DNA,160 μmol/L dNTPs,1.25 U Taq DNA polymerase,0.4 μmol/L ISSR primer and 15.85 μl ddH2O.The optimal amplification procedures were pre-denaturing for 5 min at 94 ℃,followed by 40 cycles of denaturing for 30 s at 94 ℃,annealing for 30 s at a temperature of 2-3 ℃ lower than melting temperature of each primer pair,extension for 50 s at 72 ℃.Then extension step of 7 min at 72 ℃ was performed.[Conclusion] The optimal system could provide a favorable basis for further study on genetic diversity of C.faberi Rolfe by using ISSR molecular marker technique.展开更多
文摘Abstract: Two novel triterpenes (1 and 2) were isolated from the orchid Pholidota yunnanensis Rolfe. Using chemical and spectral analyses (UV, IR, MS,1D-NMR and 2D-NMR), these two triterpenes were established as 25-methylenecyclopholidonyl p-hydroxy-trans-cinnamate (1; named pholidotine A) and 25-methylenecyclopholidonyl p-hydroxy-cis-cinnamate (2; named pholidotine B).
基金Supported by Collaborative Innovation Center for Zhuang and Yao Medicines(GJKY[2013]20)Guangxi Key Laboratory of Zhuang and Yao Medicine(GKJZ[2014]32)+3 种基金Guangxi Key Discipline of Zhuang Medicine(GJKY[2013]16)Masters Innovation Project of Postgraduate Education Innovation Program of Guangxi University of Chinese Medicine(YJSP201738)Guangxi Key Discipline of Traditional Chinese pharmacology(0501802815)Development of Zhuangyao Huotanmu Capsule for the Treatment of Hepatitis B(NKF[2018]11)
文摘[Objectives] This study was conducted to establish a characteristic fingerprinting research method for the chemical constituents of the Zhuang medicine Pholidota cantonensis Rolfe.and its characteristic fingerprint of chemical constituents,in order to identify P.cantonensis.[Methods] Ten batches of P.cantonensis from different habitats in Guangxi and out of Guangxi (Shaoguan of Guangdong Province) were determined.The materials were extracted in 80% methanol ultrasonically for 1.5 h under the material-to-liquid ratio of 2.5 g/80 ml.The HPLC determination was carried out using an Agilent 1260 HPLP instrument equipped with an Agilent5 TC-C18 (2) column at the column temperature of 30 ℃,the wavelength of 280 nm and the injection volume of 10 μl using acetonitrile-0.4% phosphoric acid as the mobile phase and chlorogenic acid as the reference peak,and the detection took 58 min.[Results] The characteristic fingerprint of the chemical constituents of P.cantonensis were obtained,and the three chromatographic peaks of gallic acid,chlorogenic acid and syringaldehyde were compared.[Conclusions] This study can provide reference for the identification of the Zhuang medicine P.cantonensis and provide guarantee for the clinical use of Chinese medicine.
基金Supported by Zhuang Yao Medicine Collaborative Innovation Center(GJKY[2013]20)Guangxi Key Laboratory of Zhuang Yao Medicine(GKJZ[2014]32)+1 种基金Guangxi Key Discipline:Zhuang pharmacy(GJKY[2013]16)Chinese Traditional Medicine Innovation Theory and Drug Efficacy Study of Bagui Scholars(J13162)
文摘Research progress of pharmacognostical identification and chemical composition of Pholidota cantonensis Rolfe. was reviewed. This paper will facilitate assurance of the safety of clinical treatment.
基金Supported by Guangxi"2011 Collaborative Innovation Center"-Zhuang Yao Medicine Collaborative Innovation Center Project(GJKY[2013]20)Guangxi Key Laboratory of Zhuang Yao Medicine(GKJZ[2014]32)+7 种基金Guangxi Key Discipline:Zhuang Pharmacy(GJKY[2013]16)Bagui Scholars ProjectNational Natural Science Foundation of China(81460587)Nanning Science and Technology Bureau Project(20183046-1)Project of Guangxi Association for Science and TechnologyThe Fourth National General Survey of Chinese Medicine Resources(Guangxi)Pilot Survey Project(GXZYZYPC-2)Guangxi Marine Drug Resources Survey-Qinzhou City(GXZYZYPC13-7-2)Guangxi First-class Discipline:Chinese Pharmacy(0501802803)
文摘[Objectives]Pharmacognosy identification was performed on Xiaohuangcao ( Dendrobium loddigesi Rolfe).[Methods]The medicinal materials were identified through original plants,characters,microscopic structure and thin-layer identification characteristics.[Results]D.loddigesi has obvious plant morphology,characters,microscopic structure and thin-layer identification characteristics.The stem of Xiaohuangcao is slender and cylindrical,and the surface is golden yellow;and the fiber bundles outside the vascular bundles are crescent-shaped or semi-circular in the stem transection.For the powder,crystal fiber can be observed;the vascular bundles are embedded with siliceous block cells;and there are more starch grains.In the thin layer chromatography,petroleum ether-ethyl acetate-butanone-glacial acetic acid (8.5∶ 3.5∶ 1.5∶ 5 d) was used as a developing solvent,and 10% sulfuric acid ethanol solution was used as a color developing agent.[Conclusions]The research results provide reference for the application of the medicinal material and the formulation of its related quality standards.
基金Supported by a Program from the State Environmental Protection Administration(20061A0013)~~
文摘[Objective] By using the genomic DNA of Cymbidium faberi Rolfe as template,the factors that affect the result of ISSR-PCR reaction system were researched and the optimal system was established.[Method] The genomic DNA was extracted from C.faberi Rolfe with method of modified CTAB.Different factors which affected ISSR amplification reaction were optimized.[Result] High-quality genomic DNA was obtained from C.faberi Rolfe.And the optimal reaction system was as follows：25 μl amplification reactions system contained 2.5 μl 10 × PCR buffer,2.0 mmol/L MgCl2,60 ng template DNA,160 μmol/L dNTPs,1.25 U Taq DNA polymerase,0.4 μmol/L ISSR primer and 15.85 μl ddH2O.The optimal amplification procedures were pre-denaturing for 5 min at 94 ℃,followed by 40 cycles of denaturing for 30 s at 94 ℃,annealing for 30 s at a temperature of 2-3 ℃ lower than melting temperature of each primer pair,extension for 50 s at 72 ℃.Then extension step of 7 min at 72 ℃ was performed.[Conclusion] The optimal system could provide a favorable basis for further study on genetic diversity of C.faberi Rolfe by using ISSR molecular marker technique.
