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The effect of thin-layer drying temperature on color, phenolic content and antioxidant capacity of noni slices was investigated. Noni slices were air-dried at 50, 60 and 70 °C under natural convection conditions. Drying curves were fitted to thin-layer drying models in order to evaluate the drying characteristics of the product. In addition, an unsteady-state diffusion equation was numerically solved considering both product shrinkage and a variable mass Biot number in boundary condition to accurately estimate water diffusivity in a process with external resistance to mass transfer. Results revealed that the Aghbashlo model accurately reproduced the experimental behavior. As expected, water diffusivities, corrected for shrinkage, increased with the use of higher drying temperatures, with values in the range of 1.80-3.19 to ×10 -9 m 2 /s. On the other hand, while drying caused a reduction in product lightness (24-31%) and total phenolic content (20-28%), the antioxidant capacity of dried noni was high (82-93% DPPH inhibition), which is advantageous for the further storage or processing of this fruit.

Background: Meat is an important source of nutrients. However, in recent years their consumption is associated with chronic-degenerative diseases giving it the perception of "unhealthy food" Given that meat is an affordable source of quality protein; its improvement entails a huge challenge for the industry and science. Methods: The search and structured review of the literature in the last ten years in the scientific databases of articles related to the elaboration of restructured meat products with functional ingredients derived from plants. Objective: This work presents a general overview, as well as the most representative studies on the elaboration of restructured meat with ingredients from plants considered functional. Conclusions: The present review is intended to emphasize the use of plant natural ingredients in the elaboration of functional restructured meat products as an alternative for consumers allowing the inclusion of functional compounds beneficial to human health in their daily diet.

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The application of pesticides in the agricultural sector represents multiple benefits such as pest and disease control, however, their application entails risks to the environment and the health of people, which can be accidental or due to improper handling. Therefore, this work focuses on the qualitative determination of the ecotoxicology of pesticides used by seasonal farmers in the Municipality of Valle de Santiago. Information on the most commonly used pesticides in the study area was collected through surveys of seasonal agricultural producers and the main points of sale for agrochemicals. The registry of commercial products with the Federal Commission for Protection against Sanitary Risks in Mexico was consulted to verify the active ingredient and its registered use. The environmental impact of the active ingredient was estimated based on a qualitative matrix to determine total ecotoxicology. The use of pesticides in the study area registered a total of 19 products, of which six are insecticides, 12 are herbicides, and one fungicide. The qualitative estimation of the total ecotoxicology of the active ingredients contained in the pesticides shows that the highest value is possessed by insecticides and to a lesser extent by herbicides.

In the present study, the nematicidal and acaricidal activity of three Enterobacter endophytic strains isolated from Mimosa pudica nodules was evaluated. The percentages of mortality of Enterobacter NOD4 against Panagrellus redivivus was 81.2%, and against Nacobbus aberrans 70.1%, Enterobacter NOD8 72.4% and 62.5%, and Enterobacter NOD10 64.8% and 58.7%, respectively. While against the Tyrophagus putrescentiae mite, the mortality percentages were 68.2% due to Enterobacter NOD4, 64.3% due to Enterobacter NOD8 and 77.8% due to Enterobacter NOD10. On the other hand, the ability of the three Enterobacter strains to produce indole acetic acid and phosphate solubilization, characteristics related to plant growth-promoting bacteria, was detected. Bioinformatic analysis of the genomes showed the presence of genes related to IAA production, phosphate solubilization, and nitrogen fixation. Phylogenetic analyzes of the recA gene, phylogenomics, and average nucleotide identity (ANI) allowed us to identify the strain Enterobacter NOD8 related to E. mori and Enterobacter NOD10 as E. asburiae, while Enterobacter NOD4 was identified as a possible new species of this species. The plant growth-promoting, acaricidal and nematicidal activity of the three Enterobacter strains makes them a potential agent to include in biocontrol alternatives and as growth-promoting bacteria in crops of agricultural interest.

El Virus Rugoso del Tomate (ToBRFV) se transmite principalmente por semilla contaminada e infección de planta a planta durante las labores del cultivo; sin embargo, las condiciones climáticas locales pueden propiciar su severidad. El objetivo del presente trabajo fue determinar la idoneidad ambiental del ToBRFV en el estado de Guanajuato, México. Se colectó material vegetativo con síntomas característicos del ToBRFV para extraer ARN y se realizaron reacciones de RT-PCR para amplificar un segmento del ORF2 del genoma de este virus. Se elaboró una base de datos con la localización geográfica de los casos positivos detectados. Posteriormente se aplicó el algoritmo de máxima entropía con 22 variables bioclimáticas como predictores. En una superficie de 288.104 ha ubicada en Guanajuato (equivalente al 9,4 % de la superficie estatal) existen las condiciones climáticas para propiciar la presencia del ToBRFV. Las variables climáticas que propician esta incidencia son: precipitación del cuatrimestre más cálido (27,7 %), régimen de humedad (26,4 %) y temperatura mínima promedio del año más frio (17,0 %).

Due to its geological origin and the intense agro-industrial activity, regions whose vocation is the agri-food production present a high level of contamination by heavy metals as the arsenic that induces toxicity in the crops of economic importance as in the case of barley (Hordeum vulgare L.). The evaluation of the response of different cultivars and genotypes in the first phenological stages is indispensable to generate technical information regard the tolerance to arsenic and the same time theoretical knowledge about how this metal is absorbed. The aim of this study was to evaluate the physiological response of barley seedlings to arsenic V (AsV) toxicity and deduce how this metal could be absorbed by the plants. Seedlings of the cultivars Alina and Esperanza were evaluated under the concentrations of 100, 200, 500 and 700 mg L -1 . Besides, models for the proteins PHT1 and HvHMA1 were performed by homology with affinity assays for AsV. The seedlings of Alina presented higher degree of tolerance to the toxicity whereby potentially the productive plots of this cultivar Alina could tolerate higher concentrations of this heavy metal. Also, the AsV could be transported by its competence with the endogenous ions as Mg 2 + and PO4 3-.