Producci n de carne de puerco lite como estrategia de desarrollo sustentable para campesinos michoacanos

Este proyecto busca incrementar los ingresos de las familias purhépechas y revertir algunos daños ambientales de la región productoraexportadora de aguacate más importante del país. Ya que el consumo de aguacate reduce el colesterol en humanos y cerdos, se alimentó a los animales con frutos de desecho para producir carne de bajo contenido de grasas. Así, se evitó que esta fruta fuera desechada en las barrancas de la región, lo cual permitió una mayor filtración de agua al manto freático. La experiencia también contribuyó a reforzar la identidad étnica, diversos patrones sociales tradicionales de las comunidades purhépechas y el papel de las mujeres en su sociedad

PRODUCCIÓN DE CARNE DE PUERCO "LITE" COMO ESTRATEGIA DE DESARROLLO SUSTENTABLE PARA CAMPESINOS MICHOACANOS

SIN RESUME

Ripening of avocado fruits studied by spectroscopic techniques

Avocados are considered very healthy due to the high content mono-unsaturated lipid, essential vitamins and minerals, minimal sugar and no cholesterol and are therefore sometimes referred to as “the perfect fruits”. Avocados, mainly grown in Latin-America, are harvested unripe and sent overseas. However, the ripening process is very difficult to assess visually and tactilely. A tool for precise noninvasive judgment of the status would be valuable as the fruit is too expensive to be cut open unripe or overdue. A white-light source and a light-emitting diode unit with four excitation wavelengths (365, 385, 395, and 405 nm) were used for reflectance and fluorescence spectroscopy in a fiber-coupled set-up for noninvasive monitoring. Twelve non-ripe avocados, with approximately the same size and appearance, were studied and divided into three groups and kept at three different storage conditions; at room temperature, in a refrigerator and a combination of the two. We showed that fluorescence was useful for following the ripening process. A method, which compensates for the spatial variations in spectral properties around a fruit, is described. Remote fluorescence monitoring, intended for orchard use, was also demonstrated. A low-cost device based on fluorescence for avocado ripeness assessment is proposed