Myrtillin

14,000,000 Leading Edge Experts on the ideXlab platform

Scan Science and Technology

Contact Leading Edge Experts & Companies

Scan Science and Technology

Contact Leading Edge Experts & Companies

The Experts below are selected from a list of 84 Experts worldwide ranked by ideXlab platform

Stephane Quideau - One of the best experts on this subject based on the ideXlab platform.

  • hemisynthesis and structural and chromatic characterization of delphinidin 3 o glucoside vescalagin hybrid pigments
    Journal of Agricultural and Food Chemistry, 2013
    Co-Authors: Ignacio Garciaestevez, Remi Jacquet, Cristina Alcaldeeon, Julian C Rivasgonzalo, Teresa M Escribanobailon, Stephane Quideau
    Abstract:

    During red wine maturation in the presence of oak wood, reactions involving anthocyanins and ellagitannins might affect wine organoleptic properties such as color and astringency. In this work, the condensation reaction between Myrtillin (delphinidin 3-O-glucoside) and vescalagin has been performed to determine the behavior of this anthocyanin in this kind of reaction and to assess the possible impact of such a reaction in wine color modulation. Two different hybrid pigments have been hemisynthetized and characterized by HPLC-DAD-MS and NMR spectroscopy. These pigments have been identified as 1-deoxyvescalagin-(1β→8)-Myrtillin (major) and 1-deoxyvescalagin-(1β→6)-Myrtillin (minor). The minor pigment could be formed both by the condensation reaction and by a regioisomerization process from the major pigment. Moreover, the chromatic properties of these pigments have been studied and compared to those of Myrtillin. The hybrid pigments showed an important bathochromic shift (ca. 20 nm) in the maximum absorban...

Ignacio Garciaestevez - One of the best experts on this subject based on the ideXlab platform.

  • hemisynthesis and structural and chromatic characterization of delphinidin 3 o glucoside vescalagin hybrid pigments
    Journal of Agricultural and Food Chemistry, 2013
    Co-Authors: Ignacio Garciaestevez, Remi Jacquet, Cristina Alcaldeeon, Julian C Rivasgonzalo, Teresa M Escribanobailon, Stephane Quideau
    Abstract:

    During red wine maturation in the presence of oak wood, reactions involving anthocyanins and ellagitannins might affect wine organoleptic properties such as color and astringency. In this work, the condensation reaction between Myrtillin (delphinidin 3-O-glucoside) and vescalagin has been performed to determine the behavior of this anthocyanin in this kind of reaction and to assess the possible impact of such a reaction in wine color modulation. Two different hybrid pigments have been hemisynthetized and characterized by HPLC-DAD-MS and NMR spectroscopy. These pigments have been identified as 1-deoxyvescalagin-(1β→8)-Myrtillin (major) and 1-deoxyvescalagin-(1β→6)-Myrtillin (minor). The minor pigment could be formed both by the condensation reaction and by a regioisomerization process from the major pigment. Moreover, the chromatic properties of these pigments have been studied and compared to those of Myrtillin. The hybrid pigments showed an important bathochromic shift (ca. 20 nm) in the maximum absorban...

E Szőke - One of the best experts on this subject based on the ideXlab platform.

  • antioxidant properties of myrtilli folium phaseoli fructus sine seminibus and drug mixture extracts
    Acta Alimentaria, 2005
    Co-Authors: Maria Then, Sz. Jasztrab, Klara Szentmihalyi, A Gere, E Szőke
    Abstract:

    In vitro investigations for the antioxidant and free radical scavenging activity of Myrtilli folium-, Phaseoli fructus sine seminibus- and a drug mixture (Equiseti herba, Myrtilli folium, Phaseoli fructus sine seminibus, Urticae folium) extracts showed antioxidant (LPO inhibitory and chain-breaking antioxidant) activity and free radical (superoxide anion and hydroxyl radical) scavenging effect. The extracts inhibited lipid peroxidation induced enzymatically by adding NADPH and non-enzymatically by adding Fe2+ in brain microsomes and in brain homogenates, respectively. The extracts reduced the stable free radical 1,1-diphenyl-2-picrylhydrazyl (DPPH), which showed chain-breaking antioxidant activity. The extracts scavenged superoxide radicals (O2-·) by inhibiting the reduction of nitro blue tetrazolium evoked by phenazine methosulphate. In addition, the extracts inhibited Fenton-reagent (Fe2+ and H2O2) induced deoxyribose degradation, therefore, it was concluded that the extracts have hydroxyl radical (OH·)...

Szőke É. - One of the best experts on this subject based on the ideXlab platform.

  • Antioxidant properties of Myrtilli folium, Phaseoli fructus sine seminibus and drug mixture extracts
    'Akademiai Kiado Zrt.', 2025
    Co-Authors: Then M., Szentmihályi K., Gere A., Sz. Jasztrab, Szőke É.
    Abstract:

    In vitro investigations for the antioxidant and free radical scavenging activity of Myrtilli folium-, Phaseoli fructus sine seminibus- and a drug mixture (Equiseti herba, Myrtilli folium, Phaseoli fructus sine seminibus, Urticae folium) extracts showed antioxidant (LPO inhibitory and chain-breaking antioxidant) activity and free radical (superoxide anion and hydroxyl radical) scavenging effect. The extracts inhibited lipid peroxidation induced enzymatically by adding NADPH and non-enzymatically by adding Fe2+ in brain microsomes and in brain homogenates, respectively. The extracts reduced the stable free radical 1,1-diphenyl-2-picrylhydrazyl (DPPH), which showed chain-breaking antioxidant activity. The extracts scavenged superoxide radicals (O2-·) by inhibiting the reduction of nitro blue tetrazolium evoked by phenazine methosulphate. In addition, the extracts inhibited Fenton-reagent (Fe2+ and H2O2) induced deoxyribose degradation, therefore, it was concluded that the extracts have hydroxyl radical (OH·) scavenging property

Sz. Jasztrab - One of the best experts on this subject based on the ideXlab platform.

  • Antioxidant properties of Myrtilli folium, Phaseoli fructus sine seminibus and drug mixture extracts
    'Akademiai Kiado Zrt.', 2025
    Co-Authors: Then M., Szentmihályi K., Gere A., Sz. Jasztrab, Szőke É.
    Abstract:

    In vitro investigations for the antioxidant and free radical scavenging activity of Myrtilli folium-, Phaseoli fructus sine seminibus- and a drug mixture (Equiseti herba, Myrtilli folium, Phaseoli fructus sine seminibus, Urticae folium) extracts showed antioxidant (LPO inhibitory and chain-breaking antioxidant) activity and free radical (superoxide anion and hydroxyl radical) scavenging effect. The extracts inhibited lipid peroxidation induced enzymatically by adding NADPH and non-enzymatically by adding Fe2+ in brain microsomes and in brain homogenates, respectively. The extracts reduced the stable free radical 1,1-diphenyl-2-picrylhydrazyl (DPPH), which showed chain-breaking antioxidant activity. The extracts scavenged superoxide radicals (O2-·) by inhibiting the reduction of nitro blue tetrazolium evoked by phenazine methosulphate. In addition, the extracts inhibited Fenton-reagent (Fe2+ and H2O2) induced deoxyribose degradation, therefore, it was concluded that the extracts have hydroxyl radical (OH·) scavenging property

  • antioxidant properties of myrtilli folium phaseoli fructus sine seminibus and drug mixture extracts
    Acta Alimentaria, 2005
    Co-Authors: Maria Then, Sz. Jasztrab, Klara Szentmihalyi, A Gere, E Szőke
    Abstract:

    In vitro investigations for the antioxidant and free radical scavenging activity of Myrtilli folium-, Phaseoli fructus sine seminibus- and a drug mixture (Equiseti herba, Myrtilli folium, Phaseoli fructus sine seminibus, Urticae folium) extracts showed antioxidant (LPO inhibitory and chain-breaking antioxidant) activity and free radical (superoxide anion and hydroxyl radical) scavenging effect. The extracts inhibited lipid peroxidation induced enzymatically by adding NADPH and non-enzymatically by adding Fe2+ in brain microsomes and in brain homogenates, respectively. The extracts reduced the stable free radical 1,1-diphenyl-2-picrylhydrazyl (DPPH), which showed chain-breaking antioxidant activity. The extracts scavenged superoxide radicals (O2-·) by inhibiting the reduction of nitro blue tetrazolium evoked by phenazine methosulphate. In addition, the extracts inhibited Fenton-reagent (Fe2+ and H2O2) induced deoxyribose degradation, therefore, it was concluded that the extracts have hydroxyl radical (OH·)...

Myrtillin - 15 days free trial to Access Experts & Abstracts