VOLTAMMETRIC DETERMINATION OF CAFFEIC ACID IN<i>ARNICA MONTANA</i>

Reyes-Salas, E. O.; Rangel-Ordoñez, L.; Manzanilla‐Cano, José A.; Barceló‐Quintal, Manuel H.; Dosal-Gómez, M. A.

doi:10.1081/al-120004549

Cited by 10 publications

(6 citation statements)

References 12 publications

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“…Hence, it is important to prevent the degradation of A. montana extracts and 2009). Furthermore, the active principles of A. montana exhibited electroactive behavior in the studied potential range, producing voltammograms that were similar to those reported previously (REYES-SALAS et al, 2002). The quantitative determination of hydrogen peroxide was achieved using a calibration curve, the best-fit linear equation of which was y = 2.46631E-6x + 5.55198E-5 (where y represents the current and x the concentration of hydrogen peroxide within the range 16 -162 mmol L-1): the value of R2 was 0.9846 indicating a high degree of correlation between the variables.…”

Section: Discussionsupporting

confidence: 86%

Effects of Therapeutic Ultrasound on the Retention and Maintenance of the Antioxidant Activity of the Glycolic Extract of Arnica Montana: An in Vitro Study

Tassinary¹,

Bianchetti²,

Stülp

2014

CeN

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The aim of the present study was to evaluate the retention of a glycolic extract of A. montana using a biomembrane model, and to determine the effect of therapeutic ultrasound on the antioxidant capacity of the extract. Biomembrane samples were treated in a vertical diffusion system with A. montana extract/hydrogel homogenate in the absence or presence of ultrasound (3 MHz; 1.0 W/cm2). Biomembranes that had been submitted to ultrasound for 4 and 150 min retained, respectively, 93.5 and 69.03% less of the bioactive extract than those treated with passive diffusion for similar periods, thus indicating that phonophoresis enhances permeation through the membrane. Cyclic voltammetry was employed in the determination of antioxidant activities by measurement of the amount of hydrogen peroxide neutralized by the extract. Electrochemical analysis showed that the peak current related to the reduction of hydrogen peroxide diminished when extract was present. However, treatment of the extract with ultrasound gave rise to a decrease in the antioxidant potential, as indicated by an observed increase of 27% in hydrogen peroxide concentration in comparison with untreated extract. It is concluded that, although ultrasound improves permeation of the glycolic extract of A. montana, the antioxidant activity of the preparation is diminished.

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Section: Discussionsupporting

confidence: 86%

Effects of Therapeutic Ultrasound on the Retention and Maintenance of the Antioxidant Activity of the Glycolic Extract of Arnica Montana: An in Vitro Study

Tassinary¹,

Bianchetti²,

Stülp

2014

CeN

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“…Pored sekviterpenskih laktona najviše izučavana jedinjenja u cvetu arnike su svakako flavonoidi u formama flavonoidnih glikozida (Merfort i Wendisch 1987, flavonoidnih glukunorida (Merfort i Wendisch 1988) i flavonoidnih aglikona (Merfort i Wendisch 1985). Ostale prateće supstance u cvetu arnike su karotenoidi (Vanhaelen, 1973), diterpeni (Schmidt et al, 1992); arnidiol (triterpen) (Santer i Stevenson, 1962), pirolizidinski alkaloidi (tusilagin i izotusilagin) , poliacetileni (Schulte et al, 1969), kumarini (umbeliferon i skopoletin) (Willuhn, 1989), fenolne kiseline (holorogenska kiselina, kafena kiselina i cinarin) (Merfort, 1992;Ebert et al, 1988;Kohlmünzer 2000;Reyes-Salas et al 2002), lignani (Schmidt et al 2006) and oligosaharidi (White et al, 1985;Kennedy et al, 1988). Etarska ulja sadrže masne kiseline, timolne derivate, monoterpene i seskviterpene (Güntzel et al, 1967;Kating et al, 1970;Willuhn, 1972a, b;HagerROM, 2002;Ristić et al, 2007).…”

Section: Hemijska Identifikacijaunclassified

“…50 mg/g) i flavonoidi (ca. 20 mg/g) (HagerROM, 2002;Merfort, 1992;Kohlmünzer, 2000;Reyes-Salas et al, 2002). Od fenolnih kiselina najzastupljenije su hlorogenska, 3,5-dikafeoilhinska (Ganzera et al, 2008) i drugi derivati kafene kiseline, dok su od fenolnih jedinjenja najzastupljeniji kvercetin-3-O-…”

Section: Slikaunclassified

“…Jasna disktincija cvetnih glavica A. montana i D. columnae u odnosu na C. officinalis je moguća zahvaljujući sadržaju rutina. U prethodnim istraživanjima je pokazano da arnika u svom fenolnom kompleksu ne sadrži rutin (HagerROM, 2002;Merfort, 1992;Kohlmünzer, 2000;Reyes-Salas et al, 2002;Ganzera et al, 2008;Spitaler et al, 2008;Albert et al, 2009;Schilcher et al, 2007). …”

Section: Tankoslojna Hromatografijaunclassified

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Influence of growing conditions on morphological and chemical properties and biological effects of extracts of Arnica montana L.

Pljevljakušić¹

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Belgrade, 2012(1,7 -2,4%).Mikroskopskim snimanjem samlevenog biljnog materijala pod različitim uveličanjima ustanovljena je jednostavna procedura identifikacije cveta arnike u odnosu na dva pretpostavljena falsifikata. Tako Since the A. montana plant specie is not native to the region of Serbia, although it occurs spontaneously in some mountain areas of neighboring countries and the Balkans in general, the aim of this study was to find a suitable technology solution of field cultivation based on the examination of induced various ecological factor effects.In this research, beside observations connected with flower heads, as the main drug, underground parts of arnica: rhizome and roots, were also studied as side products. The first phase of the experimental work included a three-year three-factorial field experiment in different modes of production, where as the factors examined: time of plantation establishment (spring and autumn planting), fertilization (manure and NPK) and methods of propagation (from seed and clonal propagation -division of the tuft). In the second phase of the experiment, characterization of the raw material was carried out in the terms of its rapid identification, qualitative evaluations based on the content of secondary metabolites and testing of biological effects of extracts obtained.Tests were performed on the field experiment conducted in 2008 at locality of Kaludjerske Bare (1008 m) on mountain Tara, in area of Nursery production department of the National Park "Tara". Since arnica its first vegetation remains in the rosette phenophase, all measurements of morphological parameters, yields and chemical Summary Doctoral Dissertation

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“…These include work by P. Sharma [37] for the sequential trace determination of As(III) and As(V) using DPP for industrial waste water analysis with a detection limit of 10 ppb. E. O. Reyes-Salas [38] performed a simultaneous detection of Ni, Co, Sb, and As in a mining aqueous sample with a detection limit of 1.4 ppm for arsenic.…”

Section: Electrochemical Proceduresmentioning

confidence: 99%

Analytical Tools for Monitoring Arsenic in the Environment

Luong¹,

Majid²,

Male³

2007

TOACJ

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Inorganic arsenic possesses the highest toxicity threat amongst all its forms found in natural groundwater and its mobility in aquatic systems and in the soil is of great environmental concern. Besides their toxicity to humans, arsenate and arsenite are highly toxic to plants. Arsenic can only be transformed into a less-toxic material and becomes a permanent part of the environment. Thus, there is a continuing need for its monitoring at arsenic-containing sites where it occurs naturally at elevated levels. This report reviews technologies with the potential to measure and monitor arsenic in the environment. However, we focus on the modern electrochemical methods of arsenic detection in drinking water. The pros and cons of such techniques are discussed with respect to their sensitivity, ability to detect the chemical states of arsenic, reliability, potential interferences, and ease of operation. In particular, emphasis has been devoted to more recent topics including modern stripping voltammetry, electrode modification, nanomaterials, and biosensors. The necessity for field instrumentation, detection and monitoring has also been addressed.

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VOLTAMMETRIC DETERMINATION OF CAFFEIC ACID INARNICA MONTANA

Cited by 10 publications

References 12 publications

Effects of Therapeutic Ultrasound on the Retention and Maintenance of the Antioxidant Activity of the Glycolic Extract of Arnica Montana: An in Vitro Study

Effects of Therapeutic Ultrasound on the Retention and Maintenance of the Antioxidant Activity of the Glycolic Extract of Arnica Montana: An in Vitro Study

Influence of growing conditions on morphological and chemical properties and biological effects of extracts of Arnica montana L.

Analytical Tools for Monitoring Arsenic in the Environment

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