Factores de transferencia suelo-planta de Elementos Tierras Raras en arroz (Oryza sativa L.)

International audienceThe present study describes the distribution and bioaccumulation of rare earth elements (REEs) in rice plants grown in San Pedro farm, located in San José de las Lajas Municipality, Mayabeque Province, Cuba. The results indicate that accumulation of REEs in different parts of plants follows the order: root>leaf>husk>grain. The transfer factor (TF) values of REEs in rice were determined, confirming that REE content in rice grains, roots, leaves and husks do not attempt on their use for human consumption and animal food, respectively.El presente estudio describe la distribución y bioacumulación de Elementos Tierras Raras (ETRs) en plantas de arroz provenientes de la finca San Pedro, ubicada en el municipio de San José de la Lajas, provincia de Mayabeque. Los resultados indican que la acumulación de los ETRs en las diferentes partes de la planta, siguen el comportamiento: raíz>hoja>cáscara>grano. Se determinan los valores del Factor de Transferencia (FT) de ETRs in arroz, confirmando que el contenido de ETRs en los granos de arroz, raíces, horas y cáscaras del grano no atentan contra su empleo como consumo humano y alimento animal, respectivamente

Bioacumulaci ón de metales pesados en arroz cultivado bajo condiciones de zen la subcuenca Mampostón

El arroz ( Oriza sativa , L.) es uno de los cultivos de mayor demanda en Cuba. La modalidad de siembra en aniego, utilizando el agua superficial de ríos cercanos, se encuentra muy extendida. La contaminación de esta agua por metales pesados (MP) constituye una vía importante de entrada del contaminante al hombre. Es por ello que el presente trabajo pretende evaluar la bioacumulación de metales pesados en plantas de arroz cultivadas en condiciones de contaminación en la subcuenca Mampostón. Se determinó el contenido de MP en agua para cuatro puntos de muestreo (Res, M2_1, M2_2 y Dique). Además se determinó el contenido pseudototal (digestión HNO 3 : HCl) e intercam - biable (CaCl 2 ) de MP en el suelo. En las plantas se realizó el muestreo 10 áreas de 1 m 2 mediante un muestreo completamente aleatorizado tomando en cada una 10 plantas y haciendo una muestra compuesta. Las plantas se separaron en cada órgano para su estudio y se determinó el contenido total de MP por digestión biácida. Todos los análisis de MP se realizaron mediante ICP-MS. Los resultados indican que el agua de aniego contiene bajos contenidos de MP. El suelo presenta valores inferiores de Cr y Pb mientras que son superiores Zn, Co, Cu y Cd, este último con valores cercanos a IVS con riesgo de ecotoxicidad. Las plantas de arroz biacumularon estos metales concentrándolos en sus raíces, siendo FBC>1 para el Zn y el FBT>1 para Zn y Se. En ninguno de los metales los contenidos en el grano son superiores a la NC 493:2006

HEAVY METALS BIOACCUMULATION AND RISK ESTIMATION IN EDIBLE FRESHWATER FISH FROM PEDROSO RESERVOIR (MAYABEQUE, CUBA)

International audienceThis work is a validation of the second step of a heavy metal monitoring procedure in Cuba fluvial ecosystems. Concentrations of seven heavy metals were measured by ICP-MS in water samples collected from the Pedroso reservoir (Mayabeque province, Cuba) and its main tributaries, as well as in edible muscle of three locally consumed fish species: Oreochromis spp., Tinca tinca and Clarias gariepinus. The results show a high concentration of Pb in areas near a paint factory (85.5 μg/L), an asphalt factory and a high traffic area (345.8 μg/L). Metal content (in mg/kg ww) in fish fillet ranged as follows: Cr (0.01-0.58), Co (0.01-0.58), Cu (0.23-88.16), Zn (4.9-29.9), As (0.01-0.86), Cd (0.02-2.93) and Pb (0.01-1.23). According to Cuban regulations, concentrations of Cd in muscle are not safe in 37.5 to 44.0 % of the studied fishes, while Pb is high in 14.0 to 20.0 %. Non-carcinogenic risk (HI) is present when daily intake is above 81 g/day. Carcinogenic risk (ELCR) is calculated to be 5.8 × 10-4 according to the US-EPA methodology. Fishermen families are the most sensitive population sector. Local authorities were informed and different measures were taken to avoid polluted fish consumption and the reduction of pollutant sources. Palabras clave: metales pesados, agua, peces, bioacumulación, seguridad alimentaria, Cuba

Lead from Notre-Dame Fire Plume Caught 15 km from Paris

International audienceThanks to the use of filters collected daily in the west of Paris, we confirm the passage of the lead-laden plume following the fire on the roof and spire of Notre-Dame Cathedral in April 2019. The measured concentrations on the filter (Pb = 1.4 μg m–3), scanning electron microscopy and Hysplit simulation, correspond to an estimate of a few hundred kilograms of lead that would have been volatilized and then oxidized in the form of micronic and submicronic aerosols. The concentrations found in the plume are, however, much lower than those found in the environment in the 1980s and 1990s but are 100 times higher than those found in times prior to and after the fire. The isotopic signature of the plume is almost identical to that of the fine Pb dust found inside the Notre-Dame building. It is different from the isotopic signature of the Parisian atmosphere before and after the fire, but it is similar to that of the atmospheric Pb legacy recorded by peat cores over the last 300 years in France. The presence of very fine lead-bearing particles makes them potentially transportable over long distances after large urban fires. Our study shows the value of daily aerosol sampling to retrospectively trace the plumes of air pollutants from industrial accidents but also from historical monument fires such as Notre-Dame in 2019

Pianeta Nutrizione kids: international pediatric conference on food, physical activity, growth and well-being : Milan, Italy. 25-27 June 2015

A1 Preterm and low birth weight nutrition in the first month life: implications for the outcome Massimo Agosti A2 Behind human milk and breastfeeding: not only food, not only growth Carlo Agostoni A3 To prevent obesity: importance and issues of cultural adaptation from weaning to 3 years of age Serge Chalons A4 Diet before and during pregnancy and child health: lessons from animal models Pascale Chavatte-Palmer A5 Infant nutrition: an opportunity to optimize future health José Manuel Moreno Villares A6 Complementary feeding strategies to facilitate acceptance of fruits and vegetables Sophie Nicklaus A7 Diet of young children in the Mediterranean region Luís Pereira-da-Silva A8 Proposal of 10 good practices to help prevent obesity in the first 1,000 days Angelo Pietrobelli, the MeNu Group A9 Macronutrient intakes in early life and subsequent risk of obesity Marie Françoise Rolland-Cachera A10 The burden of childhood obesity in Italy and the results of Nutrintake study Gian Vincenzo Zuccotti A11 Growth body composition and growth hormone therapy: linear growth Marco Cappa A12 Early nutrition pattern and late metabolic consequences Manuela Caruso-Nicoletti A13 Nutrition and Insulin-like Growth Factor (IGF) System Elena Inzaghi, Stefano Cianfarani A14 Nutrition of preterm infants Mario De Curtis A15 Early nutrition patterns and later metabolic outcomes- I part: Genetic and metabolic mechanisms Laura Guazzarotti A16 Diagnosis of metabolic disease by imaging techniques Lorenzo Iughetti A17 Nutrition, growth and cardiovascular diseases Francesco Chiarelli, Laura Comegna, Simone Franchini A18 Body fat mass and gender Laura Perrone, Giuseppina Rosaria Umano A19 Lifestyle interventions for an appropriate birth weight Elisabetta Petrella, Raffaele Bruno, Valentina Bertarini, Giulia Pedrielli, Isabella Neri, Fabio Facchinetti A20 Nutrition, growth and body composition Flavia Prodam A21 Nation-specific reference growth charts in the daily practice Alessandro Sartorio, John M. H. Buckler, Nicoletta Marazzi A22 Growth patterns in inflammatory bowel diseases (IBD) and in cystic fibrosis (CF) Maria E. Street, Viviana D. Patianna, Paola Accorsi, Sara Lo Scocco, Sergio Amarri A23 Newborn in the digital era and their body feeling: physical exercise to counteract hyperphagia Alberto Pellai A24 Nutrition, young athletes and effects of exercise. Practical suggestions Giampiero Merati A25 Physical exercise as a way to prevent criminality in minors and teenagers Isabella Merzagora A26 The measurement of daily energy expenditure in children. Evaluation of a new wrist portable device vs breath-by-breath metabolimeter Susanna Rampichini, Arsenio Veicsteinas A27 Probiotic and inflammasomes Mario Clerici A28 Probiotics and newborns Paolo Manzoni, Elena Tavella, Elena Boano, Daniele Farina A29 Relationship between gut microbiota and obesity Fabio Pac