La perspectiva de género y los profesionales de la salud: apuntes desde la salud colectiva brasileña / The gender perspective and health professionals: notes from the Brazilian collective health field

Para analizar la incorporación del género al campo de la salud, consideramos la producción científica, las políticas y programas de salud, además de las prácticas profesionales en el cotidiano de los servicios. Estos distintos planos de abordaje resultan necesarios por las diversas posibilidades que cada uno de ellos presenta ante dicha incorporación. En la producción científica, se identifica el crecimiento de la perspectiva de género, pero con baja inscripción metodológica del concepto; en las políticas y programas de salud, una ausencia de transversalidad y una presencia de inestabilidad temporal; y, en las prácticas profesionales, una incorporación más anclada en saberes prácticos que en la dimensión técnico-científica. El conjunto de las dificultades genera distintas tensiones en el desempeño cotidiano de los profesionales, entre la base científico-tecnológica y la base moral de la intervención.

We examine the incorporation of the gender perspective in the health field, considering scientific production, health policies and programs and everyday professional practices within the health services. These distinct layers are necessary given the different possibilities each presents for the incorporation of gender. In scientific production, we identify increasing inclusion of the gender perspective, but with little methodological use of the concept; in health policies and programs, the incorporation of the gender perspective is not comprehensive and varies temporally; and in professional practices, incorporation is anchored more in practical knowledge than in a technical and scientific basis. In the daily work of health professionals, this set of difficulties generates different tensions regarding the scientific and technological basis and the moral basis for intervention.

Characterization of residual oils for biodiesel production

Background: Residual oils were characterized according to their physicochemical properties, i.e. acidity, iodine value, peroxide value and saponification number, to evaluate the degradation level and viability for biodiesel production. Results: The methyl esters of fatty acids (FAME) from samples of residual bovine, chicken and soybean oils were quantified by using four transesterification methods, using acidic and basic catalysis and, gas chromatography with flame ionization detector (GC-FID). Methods that used acidic catalysis at a lower temperature were the most efficient. Methyl biodiesel samples were synthesized by basic catalysis (KOH) for all quantified oils and the physicochemical properties of the biofuel were evaluated, i.e. viscosity, flash and fire points, density, water content, iodine and acidity numbers. Conclusions: The obtained results suggesting that it is possible to take advantage of these residues for biodiesel production as the obtained products were approved according to the rules established by the National Association of Petroleum (ANP); the bovine samples were the exception regarding moisture and acidity.

Chemical composition and antibacterial activity of Laureliopsis philippiana (Looser) essential oil / Composición química y actividad antibacteriana del aceite esencial de Laureliopsis philippiana (Looser)

Laureliopsis philippiana (Looser) is native evergreen specie from Chile and Argentina used in traditional medicine. In this study, chemical composition as well as its in vitro antibacterial activity against Escherichia coli, Enterobacter aerogenes, Staphylococcus epidermidis and Staphylococcus aureus of essential oil from leaves of this species was determinated. Chemical analysis by GC-MS resulted in the identification of 19 compounds representing 98.8 percent onoterpenes; linalool (32.3 percent) and eucalyptol (37.4 percent) were the main constituents. To evaluate the antibacterial activity disc diffusion method and broth dilution method were used. The essential oil exhibited inhibitory activity against Gram (-) and Gram (+) bacteria, whereas similar activity to essential oil was showed for linalool against E. aerogenes and S. epidermidis whereas linalool alone, achieves an inhibitory effect against E. aerogenes and S. epidermidis comparable to the essential oil.

Laureliopsis philippiana (Looser) es una especie siempre verde nativa de Chile y Argentina usado en medicina tradicional. En este estudio se determinó tanto la composición química del aceite esencial obtenido a partir de hojas de esta especie, así como su actividad antibacterial in vitro contra Escherichia coli, Enterobacter aerogenes, Staphylococcus epidermidis and Staphylococcus aureus. El análisis químico por GC-MS permitió la identificación de 19 compuestos, representando el 98,8 por ciento de la composición del aceite. Monoterpenos oxigenados, eucaliptol y linalol fueron los mayores constituyentes del aceite con un 37,4 por ciento y 32,3 por ciento respectivamente. Para evaluar la actividad antibacteriana se utilizaron los métodos de difusión en agar y dilución en caldo. El aceite esencial muestra actividad inhibitoria contra las bacterias Gram (-) y Gram (+) evaluadas, mientras que linalol por si solo logra un efecto inhibitorio comparable con el aceite esencial contra E. aerogenes y S. epidermidis mientras que el linalol por si solo, logra un efecto inhibitorio contra E. aerogenes y S. epidermidis comparable al del aceite esencial.

Extraction of astaxanthin esters from shrimp waste by chemical and microbial methods

The carotenoid pigments specifically astaxanthin has many significant applications in food, pharmaceutical and cosmetic industries. The goal of this research was the extraction of Astaxanthin from a certain Persian Gulf shrimp species waste [Penaeus semisulcatus], purification and identification of the pigment by chemical and microbial methods. Microbial fermentation was obtained by inoculation of two Lactobacillus species Lb. plantarum and Lb. acidophilus in the medium culture containing shrimp waste powder by the intervention of lactose sugar, yeast extract, the composition of Both and the coolage [-20°C]. The carotenoids were extracted by an organic solvent system. After purification of astaxanthin with the thin layer chromatography method by spectrophotometer, NMR and IR analysis the presence of astaxanthin esters was recognized in this specific species of Persian Gulf shrimp. Results obtained from this study showed that the coolage at -20°C not only does not have an amplifiying effect on the production of astaxanthin but also slightly reduces this effect. Also the effect of intervention of lactose sugar showed more effectiveness in producing astaxanthin than yeast extract or more than with the presence of both. The results also indicated that there is not much difference in the ability of producing the pigment by comparing both Lb. plantarum and Lb. acidophillus. Also results showed the microbial method of extraction of astaxanthin is more effective than chemical method. The pigment extracted from certain amount of shrimp powder, 23.128 mg/g, was calculated