18
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Fracción fenólica y flavonoides totales del polen corbicular colombiano: actividad antioxidante y capacidad antirradicalaria Translated title: Phenolic fraction and total flavonoids in colombian corbicular bee pollen: antioxidant and free radical scavenging activity

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          El polen corbicular, es un producto natural resultado de la actividad de las abejas que aglutinan los granos removidos de las anteras de las flores que forrajean y estructuran en diminutos pellets, tras la adición de néctar y enzimas hipofaríngeas, para el sustento de la colonia. La variabilidad y propiedades de éste producto ha llamado la atención debido a sus propiedades nutricionales. Para el estudio se colectaron y evaluaron 63 muestras de las zonas de bosque húmedo premontano (bh-PM) y muy húmedo premontano (bmh-PM). El contenido y actividad de los fenoles y flavonoides fueron determinados sobre extractos de etanol-agua (70:30). En los extractos, la densidad media oscila entre 0,8840±0.01 y 0.8851±0.01 g/mL, el rendimiento del extracto blando de 3,30±0,70 a 7,10±1,25 g/100 mL. Los espectros UV-Vis de los extractos presentan patrones propios de fenólicos y flavonoides. La fracción fenólica observada varía entre 11,8±2,22 y 30,6±7,10 mg EAG/g, los flavonoides desde 5,67±2,35 a 12,1±1,13 mg Eq. Quercetina/g polen. La capacidad reductora (11,8±2,22 a 30,6±7,10) y (9,00±3,43 y 17,9±4,30) μM de Trolox/g para FRAP y ABTS respectivamente. Una función estructural PLSPATH y sus correlaciones en virtud a las propiedades y componentes responsables de la actividad antioxidante han sido planteadas. Los resultados son reveladores de un aporte signifi cativo de fenoles y flavonoides, en muestras de polen corbícular de zonas altoandinas colombianas, su extracción y concentración posibilita la incorporación como aditivo en suplementos alimenticios o productos farmacéuticos.

          Translated abstract

          Corbicular bee pollen, is a natural product result from the activity of bees that removed pollen grains from anthers and agglutinate it into tiny pellets, after the addition of nectar and hypo pharyngeal enzymes. The final product is stored in the hives and used as a nutritional sustenance of the colony. Variability and properties of this product has attracted research attention due to its nutritional properties. For the study were collected 63 samples at the premountain wet forest (bh-PM) and very wet premountain forest (bmh-PM). Phenols, flavonoids, and its activity were determined on extracts using ethanol-water (70:30) as a solvent. Average of density change between 0,8840±0,01 to 0,8851±0,01 g/mL, total extract from 3,30±0,70 to 7,10±1,25 g/100 mL. UV-Vis spectra show typical patterns of phenolic and flavonoids compounds. The phenolic fraction observed varies between 11,8±2,22 and 30,6±7,10 mg EAG/g, and flavonoids from 5,67±2,35 to 12,1±1,13 mg Eq. Quercetin/g pollen. The reducing capacity (11,8±2,22 to 30,6±7,10) and (9,00±3,43 and 17,9±4,30) μM Trolox/g for FRAP and ABTS respectively. A structural function PLS-PATH and their correlations respect to the properties and components responsible for the antioxidant activity have been raised. The results are indicative of a significant contribution of phenols and flavonoids, in colombian bee pollen from Andean zones, its removal and concentrations allows the incorporation as additive in food supplements or pharmaceutical products.

          Related collections

          Most cited references68

          • Record: found
          • Abstract: found
          • Article: not found

          Antioxidant activity applying an improved ABTS radical cation decolorization assay.

          A method for the screening of antioxidant activity is reported as a decolorization assay applicable to both lipophilic and hydrophilic antioxidants, including flavonoids, hydroxycinnamates, carotenoids, and plasma antioxidants. The pre-formed radical monocation of 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS*+) is generated by oxidation of ABTS with potassium persulfate and is reduced in the presence of such hydrogen-donating antioxidants. The influences of both the concentration of antioxidant and duration of reaction on the inhibition of the radical cation absorption are taken into account when determining the antioxidant activity. This assay clearly improves the original TEAC assay (the ferryl myoglobin/ABTS assay) for the determination of antioxidant activity in a number of ways. First, the chemistry involves the direct generation of the ABTS radical monocation with no involvement of an intermediary radical. Second, it is a decolorization assay; thus the radical cation is pre-formed prior to addition of antioxidant test systems, rather than the generation of the radical taking place continually in the presence of the antioxidant. Hence the results obtained with the improved system may not always be directly comparable with those obtained using the original TEAC assay. Third, it is applicable to both aqueous and lipophilic systems.
            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            Screening of radical scavenging activity of some medicinal and aromatic plant extracts

              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Comparative study of antioxidant properties and total phenolic content of 30 plant extracts of industrial interest using DPPH, ABTS, FRAP, SOD, and ORAC assays.

              Aqueous extracts of 30 plants were investigated for their antioxidant properties using DPPH and ABTS radical scavenging capacity assay, oxygen radical absorbance capacity (ORAC) assay, superoxide dismutase (SOD) assay, and ferric reducing antioxidant potential (FRAP) assay. Total phenolic content was also determined by the Folin-Ciocalteu method. Antioxidant properties and total phenolic content differed significantly among selected plants. It was found that oak (Quercus robur), pine (Pinus maritima), and cinnamon (Cinnamomum zeylanicum) aqueous extracts possessed the highest antioxidant capacities in most of the methods used, and thus could be potential rich sources of natural antioxidants. These extracts presented the highest phenolic content (300-400 mg GAE/g). Mate (Ilex paraguariensis) and clove (Eugenia caryophyllus clovis) aqueous extracts also showed strong antioxidant properties and a high phenolic content (about 200 mg GAE/g). A significant relationship between antioxidant capacity and total phenolic content was found, indicating that phenolic compounds are the major contributors to the antioxidant properties of these plants.
                Bookmark

                Author and article information

                Journal
                zt
                Zootecnia Tropical
                Zootecnia Trop.
                Instituto Nacional de Investigaciones Agricolas INIA, Maracay, Venezuela. (Maracay, Aragua, Venezuela )
                0798-7269
                December 2015
                : 33
                : 4
                : 351-374
                Affiliations
                [02] orgnameUniversidad del Tolima-Colombia orgdiv1Laboratorio de Investigaciones Mellitopalinológicas y Propiedades Fisicoquímicas de Alimentos
                [01] orgnameFacultad de Ciencias-Departamento de Química
                Article
                S0798-72692015000400007 S0798-7269(15)03300407
                6c5be2ed-f3f5-4fa0-9434-e33e1898dd9b

                http://creativecommons.org/licenses/by/4.0/

                History
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 77, Pages: 24
                Product

                SciELO Venezuela

                Categories
                Artículos Científicos

                avonoides,phenols,pollen,avonoids,Antioxidantes,fenoles,polen,Antioxidants

                Comments

                Comment on this article