Aprovechamiento de Residuos de la Industria Oleaginosa para la Recuperación de Ácidos Grasos Utilizando la Tecnología de Destilación Molecular

El objetivo del presente trabajo es determinar las variables operativas óptimas de la recuperación de ácidos grasos libres en el destilado de oleínas vegetales de mezcla de soja y girasol, mediante el proceso de destilación molecular. La oleína vegetal utilizada como materia prima proviene de una mezcla de residuos de la industria oleaginosa de soja y girasol, y el porcentaje de ácidos grasos libres que se determinó es de alrededor del 70%. Las variables operativas que se manipularon en la destilación molecular fueron temperatura y presión del destilador y flujo de alimentación, cuyos rangos experimentales fueron: temperatura entre 120°C y 180°C, presión entre 10 mtorr y 50 mtorr y flujo entre 1 ml/min y 3 ml/min. El diseño experimental adoptado corresponde a un diseño factorial D-Optimas y se ajustó a un modelo matemático cuadrático con la interacción de las variables operativas. Los valores de porcentaje de ácidos grasos libres en el destilado no presentaron diferencias significativas a diferencia de la recuperación de ácidos grasos medida como una fracción másica de ácidos grasos libres en el destilado respecto del total de la muestra

Publisher Correction: Genetic tool development in marine protists: emerging model organisms for experimental cell biology.

An amendment to this paper has been published and can be accessed via a link at the top of the paper

Genetic tool development in marine protists: emerging model organisms for experimental cell biology

Abstract: Diverse microbial ecosystems underpin life in the sea. Among these microbes are many unicellular eukaryotes that span the diversity of the eukaryotic tree of life. However, genetic tractability has been limited to a few species, which do not represent eukaryotic diversity or environmentally relevant taxa. Here, we report on the development of genetic tools in a range of protists primarily from marine environments. We present evidence for foreign DNA delivery and expression in 13 species never before transformed and for advancement of tools for eight other species, as well as potential reasons for why transformation of yet another 17 species tested was not achieved. Our resource in genetic manipulation will provide insights into the ancestral eukaryotic lifeforms, general eukaryote cell biology, protein diversification and the evolution of cellular pathways

Aprovechamiento de Residuos de la Industria Oleaginosa para la Recuperación de Ácidos Grasos Utilizando la Tecnología de Destilación Molecular

The aim of this study is to determine the optimum operating variables for the recovery of free fatty acids in the distillate of vegetable oleins mixing soybean and sunflower, by molecular distillation process. The vegetable olein used as raw material comes from a mixture of wastes of the oil industry of soybean and sunflower, and the percentage of free fatty acids was determined around 70%. The operating variables manipulated in the molecular distillation were temperature and pressure of the distiller and the feed flow, whose experimental ranges were: temperature between 120 °C and 180 °C, pressure between 10 mtorr and 50 mtorr and flow between 1 ml/min and 3 ml/min. The experimental design adopted corresponds to a factorial design D-optimal and was adjusted to a quadratic mathematical model with the interaction of the operating variables. Percentage values of free fatty acids in the distillate did not present a significantly difference unlike the recovering fatty acids measure as a mass fraction of free fatty acids in the distillate in the total sample.El objetivo del presente trabajo es determinar las variables operativas óptimas de la recuperación de ácidos grasos libres en el destilado de oleínas vegetales de mezcla de soja y girasol, mediante el proceso de destilación molecular. La oleína vegetal utilizada como materia prima proviene de una mezcla de residuos de la industria oleaginosa de soja y girasol, y el porcentaje de ácidos grasos libres que se determinó es de alrededor del 70%. Las variables operativas que se manipularon en la destilación molecular fueron temperatura y presión del destilador y flujo de alimentación, cuyos rangos experimentales fueron: temperatura entre 120°C y 180°C, presión entre 10 mtorr y 50 mtorr y flujo entre 1 ml/min y 3 ml/min. El diseño experimental adoptado corresponde a un diseño factorial D-Optimas y se ajustó a un modelo matemático cuadrático con la interacción de las variables operativas. Los valores de porcentaje de ácidos grasos libres en el destilado no presentaron diferencias significativas a diferencia de la recuperación de ácidos grasos medida como una fracción másica de ácidos grasos libres en el destilado respecto del total de la muestra

Electrochemical Biosensors for the Determination of Toxic Substances Related to Food Safety Developed in South America: Mycotoxins and Herbicides

The goal of achieving food safety and quality has become increasingly important in relevant areas. The achievement of this objective includes a significant effort in different areas related to the production of raw materials, storage, transportation, etc. One of the central areas in the verification of food safety and food quality control is related to the analysis of food components and, in particular, possible toxic substances that they may contain. Therefore, the demand for appropriate methods for the determination of these substances is increasingly demanding. Thus, not only is accuracy and precision sought in the results of the analysis, but also the speed, simplicity and lowering of costs. In this way, electrochemical techniques and, particularly, electrochemical biosensors have emerged in recent times as good candidates to satisfy such requirements. This review summarizes the advances made in research and development centers located in South American countries related to the development of electrochemical biosensors for the determination of toxic substances present in foods, particularly mycotoxins and herbicides

Publisher Correction: Genetic tool development in marine protists: emerging model organisms for experimental cell biology.

An amendment to this paper has been published and can be accessed via a link at the top of the paper