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      Uso de tecnología de membranas y resinas para la separación y purificación de polifenoles del tomate de árbol morado (Solanum betaceum Cav) Translated title: Use of membrane technology and resins for the separation and purification of polyphenols purple tree tomato (Solanum betaceum Cav)

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          Abstract

          Resumen: El fraccionamiento de los polifenoles de los jugos del mesocarpio, placenta y cáscara de tomate de árbol morado utilizando el tamaño de poro de la membrana como medio de selección, se realizó utilizando micro y ultrafiltración tangencial; pruebas realizadas con HPLC demostraron que no se realizó el fraccionamiento de los compuestos fenólicos. Los procesos de concentración de los jugos clarificados de placenta y cáscara de tomate de árbol por ósmosis inversa obtuvieron un factor de concentración volumétrica de 2 y 2,2 respectivamente. La concentración de polifenoles se incrementó en 1,5 veces para placenta y 2,4 veces para la cáscara y la capacidad antioxidante para los dos jugos aumentó en 2,4 veces. Las antocianinas de la placenta se incrementaron en 2,6 veces. La utilización de la resina XA 5071 FG concentró los compuestos fenólicos con el aumento de la capacidad antioxidante en un rango entre 4 y 5,5 y la concentración de antocianinas aumentó en 1,8 veces en el jugo de placenta. En conclusión el proceso de concentración de polifenoles del tomate de árbol fue más eficiente utilizando la resina XA 5071 FG que en el proceso de osmosis inversa utilizado en este estudio.

          Translated abstract

          Abstract: The polyphenols fractionation of mesocarp juices, placenta and purple tree tomato peel using the pore size of the membrane as a means of selection was performed using micro and ultrafiltration tangential; tests made with HPLC showed that fractionation of phenolic compounds was not performed. The processes of concentration of the clarified juices of placenta and tree tomato peel by reverse osmosis obtained a volumetric concentration factor of 2 and 2.2 respectively. The polyphenol concentration increased by 1.5 times for placenta and 2.4 times for peel and antioxidant capacity increased by 2.4 times for both juices. The anthocyanins of placenta increased by 2.6 times. The use of the resin XA 5071 FG concentrated phenolic compounds with an increase of antioxidant capacity in a range between 4 and 5.5, and anthocyanins concentration was increased 1.8 times in the placenta juice. In conclusion the process of polyphenols concentration of tree tomato was more efficient using the resin XA 5071 FG than the reverse osmosis applied in this research.

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          Polyphenols: chemistry, dietary sources, metabolism, and nutritional significance.

          Polyphenols constitute one of the most numerous and ubiquitous groups of plant metabolites and are an integral part of both human and animal diets. Ranging from simple phenolic molecules to highly polymerized compounds with molecular weights of greater than 30,000 Da, the occurrence of this complex group of substances in plant foods is extremely variable. Polyphenols traditionally have been considered antinutrients by animal nutritionists, because of the adverse effect of tannins, one type of polyphenol, on protein digestibility. However, recent interest in food phenolics has increased greatly, owing to their antioxidant capacity (free radical scavenging and metal chelating activities) and their possible beneficial implications in human health, such as in the treatment and prevention of cancer, cardiovascular disease, and other pathologies. Much of the literature refers to a single group of plant phenolics, the flavonoids. This review offers an overview of the nutritional effects of the main groups of polyphenolic compounds, including their metabolism, effects on nutrient bioavailability, and antioxidant activity, as well as a brief description of the chemistry of polyphenols and their occurrence in plant foods.
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            Antioxidant activity of pomegranate juice and its relationship with phenolic composition and processing.

            The antioxidant activity of pomegranate juices was evaluated by four different methods (ABTS, DPPH, DMPD, and FRAP) and compared to those of red wine and a green tea infusion. Commercial pomegranate juices showed an antioxidant activity (18-20 TEAC) three times higher than those of red wine and green tea (6-8 TEAC). The activity was higher in commercial juices extracted from whole pomegranates than in experimental juices obtained from the arils only (12-14 TEAC). HPLC-DAD and HPLC-MS analyses of the juices revealed that commercial juices contained the pomegranate tannin punicalagin (1500-1900 mg/L) while only traces of this compound were detected in the experimental juice obtained from arils in the laboratory. This shows that pomegranate industrial processing extracts some of the hydrolyzable tannins present in the fruit rind. This could account for the higher antioxidant activity of commercial juices compared to the experimental ones. In addition, anthocyanins, ellagic acid derivatives, and hydrolyzable tannins were detected and quantified in the pomegranate juices.
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              Optimisation of the adsorption of polyphenols from Inga edulis leaves on macroporous resins using an experimental design methodology

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                enfoqueute
                Enfoque UTE
                Enfoque UTE
                Universidad Tecnológica Equinoccial (Quito, Pichincha, Ecuador )
                1390-9363
                1390-6542
                December 2016
                : 7
                : 4
                : 71-85
                Affiliations
                [1] Quito Quito orgnameEscuela Politécnica Nacional Ecuador
                [3] Montpellier orgnameCentre De Cooperation Internationale En Recherche Agronomic Pour Le Developpement France
                [2] Quito Quito orgnameUniversidad Tecnológica Equinoccial Ecuador elena.beltran@ 123456ute.edu.ec
                Article
                S1390-65422016000400071
                10.29019/enfoqueute.v7n4.115
                f42af3ed-bad3-4bbc-93b2-378e9f9bb470

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 16 September 2016
                : 09 December 2016
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 21, Pages: 15
                Product

                SciELO null


                microfiltration,ultrafiltration,tamarillo.,microfiltración,ultrafiltración,antioxidantes,tamarillo

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