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Fang, Zhe,Moon, Dong-Cheul,Son, Kun-Ho,Son, Jong-Keun,Min, Byung-Sun,Woo, Mi-Hee Korean Chemical Society 2011 Bulletin of the Korean Chemical Society Vol.32 No.1
In this study, quantitative and pattern recognition analysis for the quality evaluation of Cimicifugae Rhizoma using HPLC/UV was developed. For quantitative analysis, three major bioactive phenolic compounds were determined. The separation conditions employed for HPLC/UV were optimized using ODS $C_{18}$ column ($250{\times}4.6mm$, $5{\mu}M$) with isocratic elution of acetonitrile and water with 0.1% phosphoric acid as the mobile phase at a flow rate of 1.0 mL/min and a detection wavelength of 323 nm. These methods were fully validated with respect to the linearity, accuracy, precision, recovery, and robustness. The HPLC/UV method was applied successfully to the quantification of three major compounds in the extract of Cimicifugae Rhizoma. The HPLC analytical method for pattern recognition analysis was validated by repeated analysis of twelve reference samples corresponding to five different species of Cimicifugae Rhizoma and seventeen samples purchased from markets. The results indicate that the established HPLC/UV method is suitable for the quantitative analysis and quality control of multi-components in Cimicifugae Rhizoma.
Quantitative and Pattern Recognition Analyses for the Quality Evaluation of Magnoliae Flos by HPLC
Fang, Zhe,Shen, Chang Min,Moon, Dong-Cheul,Son, Kun-Ho,Son, Jong-Keun,Woo, Mi-Hee Korean Chemical Society 2010 Bulletin of the Korean Chemical Society Vol.31 No.11
In this study, quantitative and pattern recognition analysis for the quality evaluation of Magnoliae Flos using HPLC/UV was developed. For quantitative analysis, eleven major bioactive lignan compounds were determined. The separation conditions employed for HPLC/UV were optimized using ODS $C_{18}$ column ($250{\times}4.6\;mm$, $5\;{\mu}m$) with isocratic elution of acetonitrile and water with 1% acetic acid as the mobile phase at a flow rate of 1.0 mL/min and a detection wavelength of 278 nm. These methods were fully validated with respect to the linearity, accuracy, precision, recovery, and robustness. The HPLC/UV method was applied successfully to the quantification of eleven major compounds in the extract of Magnoliae Flos. The HPLC analytical method for pattern recognition analysis was validated by repeated analysis of twenty one reference samples corresponding to seven different species of Magnoliae Flos and nine samples purchased from market. The results indicate that the established HPLC/UV method is suitable for the quantitative analysis and quality control of multi-components in Magnoliae Flos.
Quantitative and Pattern Recognition Analyses for the Quality Evaluation of Magnoliae Flos by HPLC
Zhe Fang,Chang Min Shen,Dong Cheul Moon,손건호,손종근,우미희 대한화학회 2010 Bulletin of the Korean Chemical Society Vol.31 No.11
In this study, quantitative and pattern recognition analysis for the quality evaluation of Magnoliae Flos using HPLC/UV was developed. For quantitative analysis, eleven major bioactive lignan compounds were determined. The separation conditions employed for HPLC/UV were optimized using ODS C18 column (250 × 4.6 mm, 5 μm) with isocratic elution of acetonitrile and water with 1% acetic acid as the mobile phase at a flow rate of 1.0 mL/min and a detection wavelength of 278 nm. These methods were fully validated with respect to the linearity, accuracy, precision, recovery,and robustness. The HPLC/UV method was applied successfully to the quantification of eleven major compounds in the extract of Magnoliae Flos. The HPLC analytical method for pattern recognition analysis was validated by repeated analysis of twenty one reference samples corresponding to seven different species of Magnoliae Flos and nine samples purchased from market. The results indicate that the established HPLC/UV method is suitable for the quantitative analysis and quality control of multi-components in Magnoliae Flos.
Anticholinesterase and Antioxidant Constituents from <i>Gloiopeltis furcata</i>
Fang, Zhe,Jeong, Su Yang,Jung, Hyun Ah,Choi, Jae Sue,Min, Byung Sun,Woo, Mi Hee The Pharmaceutical Society of Japan 2010 Chemical & pharmaceutical bulletin Vol.58 No.9
<P>Activity-directed isolation of the ethyl acetate, methylene chloride and <I>n</I>-hexane fractions of <I>Gloiopeltis furcata</I> resulted in the isolation of 18 compounds. Their structures were elucidated as 2-(3-hydroxy-5-oxotetrahydrofuran-3-yl)acetic acid (<B>1</B>), glutaric acid (<B>2</B>), succinic acid (<B>3</B>), nicotinic acid (<B>4</B>), (<I>E</I>)-4-hydroxyhex-2-enoic acid (<B>5</B>), cholesterol (<B>6</B>), 7-hydroxycholesterol (<B>7</B>), uridine (<B>8</B>), glycerol (<B>9</B>), 5-(hydroxymethyl)-2-methoxybenzene-1,3-diol (<B>10</B>), (5<I>E</I>,7<I>E</I>)-9-oxodeca-5,7-dienoic acid (<B>11</B>), (<I>Z</I>)-3-ethylidene-4-methylpyrrolidine-2,5-dione (<B>12</B>), dehydrovomifoliol (<B>13</B>), loliolide (<B>14</B>), cholesteryl stearate (<B>15</B>), palmitic acid (<B>16</B>), <I>cis</I>-5,8,11,14,17-eicosapentaenoic acid (<B>17</B>) and α-linolenic acid (<B>18</B>) on the basis of spectroscopic and chemical evidences. Their anticholinesterase and antioxidant activities were evaluated <I>via</I> inhibitory activities on acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) as well as scavenging activities on 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical and peroxynitrite (ONOO<SUP>−</SUP>). All isolated compounds (<B>1</B>—<B>18</B>) exhibited moderate AChE inhibitory activities with IC<SUB>50</SUB> values ranging from 1.14—12.50 μg/ml, whereas <B>1</B>, <B>7</B>, <B>9</B>, <B>17</B>, and <B>18</B> showed mild BChE inhibitory activities with IC<SUB>50</SUB> values ranging from 5.57—15.89 μg/ml. Although most of the compounds isolated were lacking the scavenging activity on DPPH radical and ONOO<SUP>−</SUP>, <B>5</B> and <B>10</B> showed good DPPH radical scavenging activity, and <B>5</B>, <B>10</B>, and <B>16</B> showed potent ONOO<SUP>−</SUP> scavenging activity.</P>
Yu-shuai Wang,Min-zhe Fang,Sheng-dao Zheng,조진경,이태후 한국식품과학회 2021 Food Science and Biotechnology Vol.30 No.10
Tea is one of the most widely consumed aromaticbeverages in the world because of its taste and flavor,as well as due to many potential health beneficial properties. Metabolomics focuses on an in-depth analysis of allmetabolites in living organisms. In this study, 29 primarymetabolites and 25 secondary metabolites were identifiedusing GC/MS and UPLC-QTOF/MS, respectively. Further,PCA analysis showed conspicuous discrimination for theten varieties of green tea with metabolite profiling. Amongthem, organic acids, amino acids, flavan-3-ols, and flavonolglycosides varied greatly through checking the VIP valuesof the PLS-DA model. Moreover, the intrinsic and/orextrinsic factors characterizing each type of green tea werealso discussed. The chemical component marker derivedhere should be used as an important detection index, whileevaluating the tea quality, as well as while establishing thetea quality standard.
Jiang, Jian-Tao,Zhang, Lan-Fang,Zhou, Bin,Zhang, Shun-Qun,Li, Shao-Min,Zhang, Wei,Zhang, Jin,Qiao, Zhe,Kong, Ran-Ran,Ma, Yue-Feng,Chen, Sheng Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.7
Objective: To investigate uPA and VEGF expression in esophageal cancer and relations with tumorous invasion and metastasis. Methods: Immunohistochemistry was used to detect uPA and VEGF expression in the normal epithelial tissue of esophageal mucosa and cancer tissue and detect CD34 labeled micrangium and analyze the relationships with clinical pathological features and tumor angiogenesis. Results: Positive rates for uPA and VEGF protein expression were significantly greater in esophageal cancer than normal epithelial tissue (P < 0.05), the two being linked (P <0.05). In addition, uPA and VEGF protein expression of the high microvessel density (MVD) group was significantly lower than in the low MVD group (P < 0.05), with relation to clinical pathological staging, differentiation and lymph node metastasis (P < 0.05). Conclusion: In esophageal cancer tissue, uPA and VEGF proteins are overexpressed and promote tumor angiogenesis, indicative of a poor prognosis.