The Experts below are selected from a list of 54 Experts worldwide ranked by ideXlab platform

Kahane Rémi - One of the best experts on this subject based on the ideXlab platform.

  • Genotype, nitrogen fertility and sulphur availability interact to affect flavour in garlic (Allium sativum L.)
    2007
    Co-Authors: Huchette O., Bellamy C., Arnault Ingrid, Auger Jacques, Trueman Laurence, Thomas B., Ochatt S.j., Kahane Rémi
    Abstract:

    Experiments were carried out to investigate the influence of combined nitrogen (N) and sulphur (S) fertility on the Organosulphur Compound content of garlic bulbs, especially alliin, as a specific flavour quality trait related to the health-value of garlic. Three cultivars, 'Printanor', 'Morasol' and 'Messidrôme', were grown in the greenhouse and in vitro. Sulphur was increased in the macronutrients within the range 0 - 144 mg l-1. Numerous combinations of both S and N were tested in vitro. In the greenhouse, increasing N levels, from 184.8 mg l-1 to 856.8 mg l-1, were tested with a single high level of S (128 mg l-1). Increasing S alone did not affect the growth or bulb weight of any garlic cultivar, but slightly increased the alliin content of bulbs. No symptoms of S deficiency were observed under greenhouse conditions, although the same garlic cultivars grown in vitro at 0 mg S l-1 clearly suffered, their size being greatly reduced. This suggests an important role for S contamination, such as atmospheric S, in the process of S absorption by garlic plants, which is discussed. Increasing N levels significantly accelerated garlic maturity and decreased bulb yield. The effect of N on the Organosulphur Compound content of bulbs was cultivar-dependent, but alliin accumulation was not enhanced. 'Printanor' and 'Morasol' had the highest alliin levels and were negatively influenced by increasing N, while a slight synergistic effect of S and N was observed on 'Messidrôme'. 'Messidrôme' also had the highest flavour potential when including precursors, and was more efficient in accumulating S into Organosulphur Compounds. It is therefore advisable to choose the most appropriate variety, and to adapt the N X S fertilisation regime according to the environment, in order to produce garlic with the highest health-value. (Résumé d'auteur

  • Genotype, nitrogen fertility and sulphur availability interact to affect flavour in garlic (Allium sativum L.)
    2007
    Co-Authors: Huchette Odile, Auger J., Trueman L., Thomas B., Bellamy Christelle, Ochatt Sergio, Kahane Rémi
    Abstract:

    Publication Inra prise en compte dans l'analyse bibliométrique des publications scientifiques mondiales sur les Fruits, les Légumes et la Pomme de terre. Période 2000-2012. http://prodinra.inra.fr/record/256699International audienceExperiments were carried out to investigate the influence of combined nitrogen (N) and sulphur (S) fertility on the Organosulphur Compound content of garlic bulbs, especially alliin, as a specific flavour quality trait related to the health-value of garlic. Three cultivars, 'Printanor', 'Morasol' and 'Messidr6me', were grown in the greenhouse and in vitro. Sulphur was increased in the macronutrients within the range 0 - 144 mg l(-1). Numerous combinations of both S and N were tested in vitro. In the greenhouse, increasing N levels, from 184.8 mg l(-1) to 856.8 mg l(-1), were tested with a single high level of S (128 mg l(-1)). Increasing S alone did not affect the growth or bulb weight of any garlic cultivar, but slightly increased the alliin content of bulbs. No symptoms of S deficiency were observed under greenhouse conditions, although the same garlic cultivars grown in vitro at 0 mg S l(-1) clearly suffered, their size being greatly reduced. This suggests an important role for S contamination, such as atmospheric S, in the process of S absorption by garlic plants, which is discussed. Increasing N levels significantly accelerated garlic maturity and decreased bulb yield. The effect of N on the Organosulphur Compound content of bulbs was cultivar-dependent, but alliin accumulation was not enhanced. 'Printanor' and 'Morasol' had the highest alliin levels and were negatively influenced by increasing N, while a slight synergistic effect of S and N was observed on 'Messidrome'.'Messidrome' also had the highest flavour potential when including precursors, and was more efficient in accumulating S into Organosulphur Compounds. It is therefore advisable to choose the most appropriate variety, and to adapt the N x S fertilisation regime according to the environment, in order to produce garlic with the highest health-value

Knežević-jugović Zorica D. - One of the best experts on this subject based on the ideXlab platform.

  • Encapsulation of α-lipoic acid intochitosan and alginate/gelatin hydrogel microparticles and its in vitro antioxidant activity
    2016
    Co-Authors: Vidović Bojana B., Dilber, Sanda P., Kalagasidis-krušić, Melina T., Đoržević Brižita, Milašinović Nikola Z., Kotur-stevuljević Jelena M., Knežević-jugović Zorica D.
    Abstract:

    Alpha-lipoic acidis an Organosulphur Compound well-known for its therapeutic potential and antioxidant properties. However, the effective use of α-lipoic acid depends on biological plasma half-life and its preserving stability, which could be improved by encapsulation. In this study, α-lipoic acid was incorporated into chitosan microparticles obtained by reverse emulsion crosslinking technique, as well as into microparticles of alginate/gelatin crosslinked with zinc ions. Encapsulation of α-lipoic acid in both cases was carried out by swelling of synthesized dried microparticles by their dipping in a solution of the active substance under strictly controlled conditions. Encapsulation efficiency of α-lipoic acid obtained in this study was up to 53.9 %. The structural interaction of α-lipoic acid with the carriers was revealed by Fourier transform infrared spectroscopy. In vitro released studies showed that controlled release of α-lipoic acid was achieved through its encapsulation into chitosan microparticles. The results of in vitro antioxidative activity assays of released α-lipoic acid indicated that antioxidant activity was preserved at a satisfactory level. These obtained results suggested that chitosan microparticles could be suitable for modeling the controlled release of α-lipoic acid. [Projekat Ministartsva nauke Republike Srbije, br. III 46010 i br. III46001

Tobon, Yeny A. - One of the best experts on this subject based on the ideXlab platform.

  • Photodegradation of methyl thioglycolate particles as a proxy for Organosulphur containing droplets
    2020
    Co-Authors: Seng Samantha, Picone, Andrea Lorena, Bava, Yanina Belén, Juncal, Luciana Celeste, Moreau Myriam, Ciuraru Raluca, George Christian, Romano, Rosana Mariel, Sobanska Sophie, Tobon, Yeny A.
    Abstract:

    Understanding the formation and transformation of sulphur-rich particles is of prime importance since they contribute to the global atmospheric sulphur budget. In this work, we performed a series of experiments on a photoactive Organosulphur Compound namely, methyl thioglycolate, as a model of an Organosulphur species of marine origin. By investigating the photoproducts within levitated droplets, we showed that elemental sulphur (α-S8) and sulphate (SO4 2-) can be photochemically generated at the gas-liquid interface by heterogeneous interaction with gaseous O2 and H2O. These results demonstrate that the surface of levitated droplets facilitate the oxidation of methyl thioglycolate in the dark, while illumination is necessary to produce the oxidation in bulk experiments.Centro de Química Inorgánic

  • Photodegradation of methyl thioglycolate particles as a proxy for Organosulphur containing droplets
    2018
    Co-Authors: Seng Samantha, Picone, Andrea Lorena, Bava, Yanina Belén, Juncal, Luciana Celeste, Moreau Myriam, Ciuraru Raluca, George Christian, Romano, Rosana Mariel, Sobanska Sophie, Tobon, Yeny A.
    Abstract:

    Understanding the formation and transformation of sulphur-rich particles is of prime importance since they contribute to the global atmospheric sulphur budget. In this work, we performed a series of experiments on a photoactive Organosulphur Compound namely, methyl thioglycolate, as a model of an Organosulphur species of marine origin. By investigating the photoproducts within levitated droplets, we showed that elemental sulphur (α-S8) and sulphate (SO4 2-) can be photochemically generated at the gas-liquid interface by heterogeneous interaction with gaseous O2 and H2O. These results demonstrate that the surface of levitated droplets facilitate the oxidation of methyl thioglycolate in the dark, while illumination is necessary to produce the oxidation in bulk experiments.Fil: Seng, Samantha. Universite Des Sciences Et Technologies de Lille;Fil: Picone, A. Lorena. Facultad de Ciencias Exactas, Universidad Nacional de la Plata; ArgentinaFil: Bava, Yanina B.. Facultad de Ciencias Exactas, Universidad Nacional de la Plata; ArgentinaFil: Juncal, Luciana C.. Facultad de Ciencias Exactas, Universidad Nacional de la Plata; ArgentinaFil: Moreau, Myriam. Universite Des Sciences Et Technologies de Lille;Fil: Ciuraru, Raluca. Universite Des Sciences Et Technologies de Lille;Fil: George, Christian. Universite Claude Bernard Lyon 1;Fil: Romano, Rosana M.. Universite Claude Bernard Lyon 1;Fil: Sobanska, Sophie. Facultad de Ciencias Exactas, Universidad Nacional de la Plata; ArgentinaFil: Tobon, Yeny A.. Universite Des Sciences Et Technologies de Lille

Dilber, Sanda P. - One of the best experts on this subject based on the ideXlab platform.

  • Encapsulation of alpha-lipoic acid into chitosan and alginate/gelatin hydrogel microparticles and its in vitro antioxidant activity
    2016
    Co-Authors: Vidović Bojana, Milašinović Nikola, Kotur-stevuljević Jelena, Dilber, Sanda P., Kalagasidis-krušić, Melina T., Đoržević Brižita, Knežević-jugović Zorica
    Abstract:

    Alpha-lipoic acid is an Organosulphur Compound well-known for its therapeutic potential and antioxidant properties. However, the effective use of alpha-lipoic acid depends on biological plasma half-life and its preserving stability, which could be improved by encapsulation. In this study, alpha-lipoic acid was incorporated into chitosan microparticles obtained by reverse emulsion crosslinking technique, as well as into microparticles of alginate/gelatin crosslinked with zinc ions. Encapsulation of alpha-lipoic acid in both cases was carried out by swelling of synthesized dried microparticles by their dipping in a solution of the active substance under strictly controlled conditions. Encapsulation efficiency of alpha-lipoic acid obtained in this study was up to 53.9%. The structural interaction of alpha-lipoic acid with the carriers was revealed by Fourier transform infrared spectroscopy. In vitro released studies showed that controlled release of alpha-lipoic acid was achieved through its encapsulation into chitosan microparticles. The results of in vitro antioxidative activity assays of released alpha-lipoic acid indicated that antioxidant activity was preserved at a satisfactory level. These obtained results suggested that chitosan microparticles could be suitable for modeling the controlled release of alpha-lipoic acid

  • Encapsulation of α-lipoic acid intochitosan and alginate/gelatin hydrogel microparticles and its in vitro antioxidant activity
    2016
    Co-Authors: Vidović Bojana B., Dilber, Sanda P., Kalagasidis-krušić, Melina T., Đoržević Brižita, Milašinović Nikola Z., Kotur-stevuljević Jelena M., Knežević-jugović Zorica D.
    Abstract:

    Alpha-lipoic acidis an Organosulphur Compound well-known for its therapeutic potential and antioxidant properties. However, the effective use of α-lipoic acid depends on biological plasma half-life and its preserving stability, which could be improved by encapsulation. In this study, α-lipoic acid was incorporated into chitosan microparticles obtained by reverse emulsion crosslinking technique, as well as into microparticles of alginate/gelatin crosslinked with zinc ions. Encapsulation of α-lipoic acid in both cases was carried out by swelling of synthesized dried microparticles by their dipping in a solution of the active substance under strictly controlled conditions. Encapsulation efficiency of α-lipoic acid obtained in this study was up to 53.9 %. The structural interaction of α-lipoic acid with the carriers was revealed by Fourier transform infrared spectroscopy. In vitro released studies showed that controlled release of α-lipoic acid was achieved through its encapsulation into chitosan microparticles. The results of in vitro antioxidative activity assays of released α-lipoic acid indicated that antioxidant activity was preserved at a satisfactory level. These obtained results suggested that chitosan microparticles could be suitable for modeling the controlled release of α-lipoic acid. [Projekat Ministartsva nauke Republike Srbije, br. III 46010 i br. III46001

Kalagasidis-krušić, Melina T. - One of the best experts on this subject based on the ideXlab platform.

  • Encapsulation of alpha-lipoic acid into chitosan and alginate/gelatin hydrogel microparticles and its in vitro antioxidant activity
    2016
    Co-Authors: Vidović Bojana, Milašinović Nikola, Kotur-stevuljević Jelena, Dilber, Sanda P., Kalagasidis-krušić, Melina T., Đoržević Brižita, Knežević-jugović Zorica
    Abstract:

    Alpha-lipoic acid is an Organosulphur Compound well-known for its therapeutic potential and antioxidant properties. However, the effective use of alpha-lipoic acid depends on biological plasma half-life and its preserving stability, which could be improved by encapsulation. In this study, alpha-lipoic acid was incorporated into chitosan microparticles obtained by reverse emulsion crosslinking technique, as well as into microparticles of alginate/gelatin crosslinked with zinc ions. Encapsulation of alpha-lipoic acid in both cases was carried out by swelling of synthesized dried microparticles by their dipping in a solution of the active substance under strictly controlled conditions. Encapsulation efficiency of alpha-lipoic acid obtained in this study was up to 53.9%. The structural interaction of alpha-lipoic acid with the carriers was revealed by Fourier transform infrared spectroscopy. In vitro released studies showed that controlled release of alpha-lipoic acid was achieved through its encapsulation into chitosan microparticles. The results of in vitro antioxidative activity assays of released alpha-lipoic acid indicated that antioxidant activity was preserved at a satisfactory level. These obtained results suggested that chitosan microparticles could be suitable for modeling the controlled release of alpha-lipoic acid

  • Encapsulation of α-lipoic acid intochitosan and alginate/gelatin hydrogel microparticles and its in vitro antioxidant activity
    2016
    Co-Authors: Vidović Bojana B., Dilber, Sanda P., Kalagasidis-krušić, Melina T., Đoržević Brižita, Milašinović Nikola Z., Kotur-stevuljević Jelena M., Knežević-jugović Zorica D.
    Abstract:

    Alpha-lipoic acidis an Organosulphur Compound well-known for its therapeutic potential and antioxidant properties. However, the effective use of α-lipoic acid depends on biological plasma half-life and its preserving stability, which could be improved by encapsulation. In this study, α-lipoic acid was incorporated into chitosan microparticles obtained by reverse emulsion crosslinking technique, as well as into microparticles of alginate/gelatin crosslinked with zinc ions. Encapsulation of α-lipoic acid in both cases was carried out by swelling of synthesized dried microparticles by their dipping in a solution of the active substance under strictly controlled conditions. Encapsulation efficiency of α-lipoic acid obtained in this study was up to 53.9 %. The structural interaction of α-lipoic acid with the carriers was revealed by Fourier transform infrared spectroscopy. In vitro released studies showed that controlled release of α-lipoic acid was achieved through its encapsulation into chitosan microparticles. The results of in vitro antioxidative activity assays of released α-lipoic acid indicated that antioxidant activity was preserved at a satisfactory level. These obtained results suggested that chitosan microparticles could be suitable for modeling the controlled release of α-lipoic acid. [Projekat Ministartsva nauke Republike Srbije, br. III 46010 i br. III46001