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| 1 | Solubility and metastable zone width measurement of 3,4-bis (3-nitrofurazan-4-yl) furoxan (DNTF) in ethanol + water显示文摘The solubility and supersolubility of 3,4-bis(3-nitrofurazan-4-yl)furoxan(DNTF) in ethanol + water at different operation were determined by laser monitoring system under atmospheric pressure to study the metastable zone width(MSZW). The modified Apelblat equation was adopted to correlate the experimental solubility data, and the correlation result showed perfect consistent with the experimental data. The standard dissolution enthalpy, standard dissolution entropy and Gibbs energy were calculated according to the experimental solubility data. The effect of the cooling rate, stirring rate, temperature and the concentration of ethanol + water on the MSZW was studied. It was found that the MSZW of DNTF increased with the increasing cooling rate, decreasing temperature, decreasing stirring rate and decreasing ratio of water. And the apparent nucleation order of DNTF in ethanol + water was calculated by the relationship between the cooling rate and the MSZW. | Lizhen Chen Liang Song Guanchao Lan Jianlong Wang | 2017 | Chinese Journal of Chemical Engineering2017，25，5： | 7 |
| 2 | Chemical profiling and rapid discrimination of Blumea riparia and Blumea megacephala by UPLC-Q-Exactive-MS/MS and HPLC显示文摘Objective:To rapidly identify the two morphologies and chemical properties of similar herbal medicines,Blumea riparia and B.megacephala as the basis for chemical constituent analysis.Methods:UPLC-Q-Exactive-MS/MS was utilized for profiling and identification of the constituents in B.riparia and B.megacephala.Chemical pattern recognition(CPR)was further used to compare and distinguish the two herbs and to identify their potential characteristic markers.Then,an HPLC method was established for quality evaluation.Results:A total of 93 constituents are identified,including 54 phenolic acids,35 flavonoids,two saccharides,one phenolic acid glycoside,and one other constituent,of which 67 were identified in B.riparia and B.megacephala for the first time.CPR indicates that B.riparia and B.megacephala samples can be distinguished from each other based on the LC–MS data.The isochlorogenic acid A to cryptochlorogenic acid peak area ratio calculated from the HPLC chromatograms was proposed as a differentiation index for distinguishing and quality control of B.riparia and B.megacephala.Conclusion:This study demonstrates significant differences between B.riparia and B.megacephala in terms of chemical composition.The results provide a rapid and simple strategy for the comparison and evaluation of the quality of B.riparia and B.megacephala. | Hongna Su Xuexue Li Ying Li Yuanlin Kong Jianlong Lan Yanfei Huang Yuan Liu | 2023 | Chinese Herbal Medicines2023，15，2： | 0 |
| 3 | Determination and Multidimensional Analysis of 29 Inorganic Elements in Cardamine tangutorum O.E.Schulz of Different Origins显示文摘[Objectives]This study aimed to determine the contents of inorganic elements in Cardamine tangutorum O.E.Schulz samples from different origins to provide a scientific reference for the quality control,safety evaluation and clinical medicinal use of C.tangutorum O.E.Schulz.[Methods]The contents of Al,As,B,Ba,Ca,Cd,Co,Cr,Cu,Fe,Hg,K,Mg,Mn,Mo,Na,Ni,P,Pb,Pd,Rb,Se,Si,Sn,Sr,Ti,Tl,V and Zn in the C.tangutorum O.E.Schulz samples were determined simultaneously by wet digestion and inductively coupled plasma optical emission spectroscopy(ICP-OES),and the determination results were analyzed by principal component analysis.[Results]A total of 28 inorganic elements were detected in the samples of C.tangutorum O.E.Schulz from different origins.The contents of heavy metals did not exceed the limits.Among the elements,the determined values of Hg in all samples were below the detection limit,so it was not detected.The contents of Ca,Al,P and Fe were relatively high,and they were essential nutrients in the human body.There were significant differences among different elements.Samples from different origins show similar patterns in the distribution of main elements.Correlation analysis shows that 15 pairs of inorganic elements out of 24 elements had extremely significant positive correlations,and 26 pairs of elements had significant positive correlations.The principal component analysis determined Al,As,Ba,Ca,Cd,Fe,Mn,Ni,P,Pb,Pd,Se,V and Zn were the characteristic inorganic elements in the samples of C.tangutorum O.E.Schulz.[Conclusions]The contents of toxic heavy metals in C.tangutorum O.E.Schulz samples from different origins met the edible requirements.The method was simple,rapid and accurate,and could be used to analyze and determine the inorganic elements in the samples of C.tangutorum O.E.Schulz,providing a theoretical basis for the better development and utilization of C.tangutorum O.E.Schulz. | Xiaoxia CAI Bochao LI Junzhang QUBIE Yuebu HAILAI Jianlong LAN Wenbing LI Yuan LIU | 2020 | Medicinal Plant2020，11，6： | 0 |
| 4 | Quality Standard of Yi Medicinal Material Anaphalis margaritacea显示文摘[Objectives]To establish quality standards for traditional Yi medicine of the Anaphalis margaritacea.[Methods]The original plants,traits,identification and TLC was used to identify L.franchetii Beauv.water content,total ash,acid-insoluble ash and extract were checked according to the Chinese Pharmacopoeia(2020 Edition).The content of 3,5-dicaffeoylquinic acid was determined by HPLC.[Results]The microscopic identification features are obvious,epidermal cells,stomata,non-glandular hairs,annular vessel,conduit wood fiber,pollen grains,starch grains,calcium oxalate clusters were observed,etc.TLC showed clear spots and good resolution.The extract content of acid-insoluble ash aqueous solution in 16 batches of samples was 5.22%-9.33%,6.79%-14.47%,0.39%-3.30%,20.49%-32.93%,respectively.3,5-O-dicafeylquinic acid showed good linear relationships within their own ranges(R^(2)=1.0),whose average recoveries were 99.11%with the RSD of 1.35%,respectively.[Conclusions]The method adopted was reasonable and feasible,and could be used for quality control of A.margaritacea. | Ciga DIJIU Jianlong LAN Yuebu HAILAI Zhengming YANG Yuan LIU | 2022 | Medicinal Plant2022，13，5： | 0 |
| 5 | Quality Standard of Zijinbiao显示文摘[Objectives]To establish the quality standard for Zijinbiao.[Methods]Microscopic identification,physical and chemical identification,and thin-layer chromatography(TLC)were used to qualitatively identify Zijinbiao.The moisture,total ash,acid-insoluble ash,and alcohol-soluble extract content were determined.The content of Plumbagin was determined by high performance liquid chromatography(HPLC).[Results]Microscopic identification,physical and chemical identification and thin layer identification features were remarkable.The moisture,total ash,acid-insoluble ash,and extract content of the 15 batches of samples were 7.49%-11.84%,2.43%-5.81%,0.59%-3.18%and 13.80%-20.45%,respectively.The linear equation of Plumbagin was Y=38094X,R^(2)=0.9996.Plumbagin had a good linear relationship in the range of 0.01-0.53 mg/mL.[Conclusions]This method is specific and reproducible,and can be used for quality control of Zijinbiao. | Jianlong LAN Yuebu HAILAI Cijia DIJIU Hongna SU Li LI Zhengming YANG Yuan LIU | 2022 | Medicinal Plant2022，13，5： | 0 |
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