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| Chen,Yuhang; Zhu,Zaibiao; Guo,Qiaosheng; Zhang,Lixia; Zhang,Xiaoming. |
| Prunella vulgaris L. (Labiatae) contains a variety of structurally diverse natural products, primarily rosmarinic acid (RA), ursolic acid (UA) and oleanolic acid (OA), which possess a wide array of biological properties. In the present study, P. vulgaris was harvested at three developmental stages (vegetative, full-flowering and mature-fruiting stages), dissected into stem and leaf tissues and assayed for chemical contents using high performance liquid chromatography. Significant changes in the concentrations of the major secondary metabolites (RA, UA and OA) were observed at the different development stages. The highest concentrations of RA, UA and OA were found at the full-flowering stage (15.83 mg/g dry weight (DW) RA, 1.77 mg/g DW UA and 0.65 mg/g DW... |
| Tipo: Journal article |
Palavras-chave: Prunella vulgaris L.; Ontogenetic and morphogenetic variation; Rosmarinic acid; Ursolic acid; Oleanolic acid. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602012000200009 |
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| Chaowuttikul,Chayanon; Palanuvej,Chanida; Ruangrungsi,Nijsiri. |
| The chlorogenic acid, rosmarinic acid, and caffeic acid contents in 100 selected plants were determined using reversed phase high performance liquid chromatography equipped with diode array detector. The optimum condition was 0.2% phosphoric acid in water (solvent A) and methanol (solvent B) as the mobile phase, which was set at 45% B for 20 minutes at a flow rate of 1.2 mL/min. The column temperature was maintained at 30 ºC and the detection wavelength was 325 nm. Among 100 selected plants, 39.64% contained all 3 compounds, 40.54% contained 2 compounds, 14.41% contained only 1 compound, and 5.41% could not detect any of the 3 compounds. The highest contents of chlorogenic acid, rosmarinic acid, and caffeic acid were found in Lonicera japonica flowering... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chlorogenic acid; Rosmarinic acid; Caffeic acid; RP-HPLC-DAD; Medicinal plant. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100507 |
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| LI,Hui-Zhen; ZHANG,Zhi-Jun; XUE,Jiao; CUI,Li-Xia; HOU,Tian-yu; LI,Xiao-Jun; CHEN,Tie. |
| Abstract Response surface methodology (RSM) was used to optimize ultrasound-assisted extraction (UAE) of functional components from perilla leaves. The factors investigated were ethanol concentration, extraction temperature, and extraction time. The results revealed that ethanol concentration had significant effects on all extraction parameters. Based on the RSM results, the optimal conditions were an ethanol concentration of 56%, a UAE temperature of 54 °C, and a UAE time of 55 min. Under these conditions, the experimental TPC (total phenolic content), RA (rosmarinic acid), FRAP (ferric reducing antioxidant power) and DPPH (1,1-diphenyl-2-picrylhydrazyl) values were 48.85 mg GAE/g DW (mg gallic acid equivalent /g of dry weight), 31.02 mg/g DW, 85.55 μmol... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Perilla leaves; Ultrasound-assisted extraction; Phenolic compounds; Antioxidants; Rosmarinic acid. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612016000400686 |
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