Person:
Martín, Franz

Catedrático/a de Universidad
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First Name
Franz
Last Name
Martín
Affiliation
Universidad Pablo de Olavide
Department
Biología Molecular e Ingeniería Bioquímica
Research Center
Area
Nutrición y Bromatología
Research Group
Nutrición y Diabetes
PAIDI Areas
Biología y Biotecnología
PhD programs
Biotecnología, Biomedicina y Ciencias de la Salud, Ciencias de la Actividad Física, del Deporte y la Salud
Identifiers
UPO investigaORCIDScopus Author IDWeb of Science ResearcherIDDialnet ID

Search Results

Now showing 1 - 5 of 5
  • Publication
    Consumption of orange fermented beverage reduces cardiovascular risk factors in healthy mice
    (Pergamon-Elsevier Science Ltd, 2015) Escudero López, Blanca; Berná, Genoveva; Ortega de la Torre, María de los Ángeles; Herrero Martín, Griselda; Cerrillo, Isabel; Martín, Franz; Fernández-Pachón, María-Soledad
    The consumption of fruits prevents the risk of cardiovascular diseases. Alcoholic fermentation has been carried out in fruits resulting in products which provide high concentration of bioactive compounds and variable alcohol content. The aim of this study was to assess the potential beneficial effect of an orange beverage obtained by alcoholic fermentation and pasteurization of orange juice on cardiovascular risk biomarkers. For this purpose, four mice groups (n = 8) ingested orange beverage (equivalent volume to 250 mL/day in human), orange juice, alcoholic solution (at the proportional amount of orange beverage) or water during 12 weeks. The equivalent amount to double serving of orange beverage (500 mL/day) was administered to mice in a subsequent intervention, and a control group was also evaluated. Orange beverage consumption increased levels of glutathione and uric acid, improved lipid profile, decreased oxidized LDL and maintained levels of IL-6 and C-reactive protein. Synergistic effects between the bioactive compounds and the alcohol content of orange beverage may occur. The intake of double serving also increased antioxidant enzyme activities, bilirubin content and plasma antioxidant capacity. These results suggest that orange beverage may produce greater protection against cardiovascular risk factors than orange juice in healthy mice.
  • Publication
    Effect of fermentation and subsequent pasteurization processes on amino acids composition of orange juice
    (Springer, 2015-03-05) Cerrillo, Isabel; Fernández-Pachón, María-Soledad; Collado-González, J.; Escudero López, Blanca; Berná, Genoveva; Herrero Martín, Griselda; Martín, Franz; Ferreres, F.; Gil-Izquierdo, A.
    The fermentation of fruit produces significant changes in their nutritional composition. An orange beverage has been obtained from the controlled alcoholic fermentation and thermal pasteurization of orange juice. A study was performed to determine the influence of both processes on its amino acid profile. UHPLC-QqQ-MS/MS was used for the first time for analysis of orange juice samples. Out of 29 amino acids and derivatives identified, eight (ethanolamine, ornithine, phosphoethanolamine, α-amino-n-butyric acid, hydroxyproline, methylhistidine, citrulline, and cystathionine) have not previously been detected in orange juice. The amino acid profile of the orange juice was not modified by its processing, but total amino acid content of the juice (8194 mg/L) was significantly increased at 9 days of fermentation (13,324 mg/L). Although the pasteurization process produced partial amino acid degradation, the total amino acid content was higher in the final product (9265 mg/L) than in the original juice, enhancing its nutritional value.
  • Publication
    Alcoholic fermentation induces melatonin synthesis in orange juice
    (Wiley, 2014) Fernández-Pachón, María-Soledad; Medina, S.; Herrero Martín, Griselda; Cerrillo, Isabel; Berná, Genoveva; Escudero López, Blanca; Ferreres, F.; Martín, Franz; García-Parrilla, M.C.; Gil-Izquierdo, A.
    Melatonin (N-acetyl-5-methoxytryptamine) is a molecule implicated in multiple biological functions. Its level decreases with age, and the intake of foods rich in melatonin has been considered an exogenous source of this important agent. Orange is a natural source of melatonin. Melatonin synthesis occurs during alcoholic fermentation of grapes, malt and pomegranate. The amino acid tryptophan is the precursor of all 5-methoxytryptamines. Indeed, melatonin appears in a shorter time in wines when tryptophan is added before fermentation. The aim of the study was to measure melatonin content during alcoholic fermentation of orange juice and to evaluate the role of the precursor tryptophan. Identification and quantification of melatonin during the alcoholic fermentation of orange juice was carried out by UHPLC-QqQ-MS/MS. Melatonin significantly increased throughout fermentation from day 0 (3.15 ng/mL) until day 15 (21.80 ng/mL) reaching larger amounts with respect to other foods. Melatonin isomer was also analysed, but its content remained stable ranging from 11.59 to 14.18 ng/mL. The enhancement of melatonin occurred mainly in the soluble fraction. Tryptophan levels significantly dropped from 13.80 mg/L (day 0) up to 3.19 mg/L (day 15) during fermentation. Melatonin was inversely and significantly correlated with tryptophan (r = 0.907). Therefore, the enhancement in melatonin could be due to both the occurrence of tryptophan and the new synthesis by yeast. In summary, the enhancement of melatonin in novel fermented orange beverage would improve the health benefits of orange juice by increasing this bioactive compound.
  • Publication
    Effect of alcoholic fermentation on the carotenoid composition and provitamin A content of orange juice
    (ACS Publications, 2014) Cerrillo, Isabel; Escudero López, Blanca; Honero-Méndez, D.; Martín, Franz; Fernández-Pachón, María-Soledad
    Orange juice is considered a rich source of carotenoids, which are thought to have diverse biological functions. In recent years, a fermentation process has been carried out in fruits resulting in products that provide higher concentrations of bioactive compounds than their original substrates. The aim of this study was to evaluate the effect of a controlled alcoholic fermentation process (15 days) on the carotenoid composition of orange juice. Twenty-two carotenoids were identified in samples. The carotenoid profile was not modified as result of the fermentation. Total carotenoid content and provitamin A value significantly increased from day 0 (5.37 mg/L and 75.32 RAEs/L, respectively) until day 15 (6.65 mg/L and 90.57 RAEs/L, respectively), probably due to a better extractability of the carotenoids from the food matrix as a result of processing. Therefore, the novel beverage produced could provide a rich source of carotenoids and exert healthy effects similar to those of orange juice.
  • Publication
    GATA6 Controls Insulin Biosynthesis and Secretion in Adult b-Cells
    (American Diabetes Association, 2018-03-01) Villamayor,Laura; Rodríguez-Seguel, Elisa; Araujo, Raquel; Manuel Carrasco; Bru-Tarí, Eva; Mellado-Gil, Anabel; Gauthier, Benoit R.; Martinelli, Paola; Quesada, Iván; Soria, Bernat; Cano, David A.; Rojas; Martín, Franz; Rojas González, Ana Isabel
    En este trabajo en el que soy autora en correspondencia, está basado en estudios previos en humanos en el que se muestra que mutaciones en el gen que codifica para el factor de transcripción GATA6 se han relacionado con la aparición de diabetes en la edad adulta, sugiriendo un papel importante de GATA6 en la fisiología de las células β humanas. Para investigar el papel de GATA6 en el páncreas endocrino adulto, generamos ratones en los que el gen Gata6 está específicamente inactivado en el páncreas. Estos ratones desarrollan intolerancia a la glucosa. Los islotes deficientes en GATA6 muestran una disminución del contenido de insulina y una secreción de insulina alterada. Las células β deficientes en GATA6 exhiben anomalías ultraestructurales, que incluyen aumento de gránulos de insulina inmaduros, mitocondrias inflamadas y retículo endoplasmático desorganizado. También demostramos que la expresión transcripcional del gen Pdx1 está regulado directamente por GATA6 las células β, identificando dos sitos de unión de este factor en las secuencias reguladoras de Pdx1. Estos hallazgos demuestran por primera vez el papel esencial de GATA6 en la función de las células β, más específicamente en la biosíntesis y secreción de insulina.