Aislamiento de ácidos grasos poliinsaturados (PUFA) de aceites comestibles mediante cromatografía líquida de gel de sílice impregnado con nitrato de plata

Four edible oils, linseed, borage and sunflower seed oils, and the liver oil of shortfin mako (Isurus oxyrinchus), have been fractionated by open column liquid chromatography, using partially argentated silica gel as stationary phase, looking for purify polyunsaturated fatty acids (PUFA). By this method, linoleic (LA, 18:2n6),α-linolenic (ALA, 18:3n3), γ-linolenic (GLA, 18:3n6), stearidonic (SDA, 18:4n3), eicosapentaenoic (EPA, 20:5n3) and docosahexaenoic (DHA, 22:6n3) fatty acid esters have been isolated from these oils with high purity percentages and yields.Los aceites comestibles de lino, girasol, borraja y el de hígado de marrajo (Isurus oxyrinchus), se fraccionaron mediante cromatografía líquida en columna abierta, usando como fase estacionaria gel de sílice parcialmente impregnado con nitrato de plata, con el objetivo de purificar varios ácidos grasos poliinsaturados (PUFA). Mediante este método, se aislaron los ésteres metílicos de los ácidos linoleico (LA, 18:2n6), α-linolénico (ALA, 18:3n3), γ- linolénico (GLA, 18:3n6), estearidónico (SDA, 18:4n3), eicosapentaenoico (EPA, 20:5n3) y docosahexaenoico (DHA, 22:6n3) con altas purezas y rendimientos

Escrituras del yo. España e Hispanoamérica.

The volume deals with the different solutions of the subject «I» in literature, through real or fictional autobiographies, 1st person narrating, self-representation in writing. Scholars of Spanish and Hiapanoamerican Literatures, plus some writers, contribute, also from a theoretical point of view. The cover illustration is mine

Congenital Milroy Oedema: a case report of a family

The authors describe the case of a newborn and their family with Nonne-Milroy disease (hereditary lymphedema type I), a genetic disease that is usually characterized by lymphedema, that most often affects the lower extremities or less frequently the back of the hands. We discuss etiology, inheritance pattern, differential diagnosis and follow-up

Overweight, thinness, body self-image and eating strategies of 2121 Italian teen agers

This study describes the prevalence rate of overweight and thinness in a population of teens living in two different areas of Italy and explores the body self-image perception and unhealthy eating behaviours and strategies to lose weight. A questionnaire was administered to a sample of 2,121 teenage students (1,084 males, 1,037 females). Results showed that teen females and males build and perceive their body images in very different ways. Most of the overall sample perceived their weight as normal, while a relevant 31.6% defined themselves as overweight and another 4.4% as heavily overweight. Analysis based on BMI (calculated through self-referred weight and height) showed that only 9.2% of our sample could be considered overweight and 1.7% obese. Most of female teen students (485 out of 1,037) were trying to lose weight, demonstrating that strategies to lose weight were undertaken also by girls perceiving themselves as normal in relation to body weight. 46.8% girls were using strategies to lose weight compared with 21.9% boys. These strategies included very problematic behaviours like self-induced vomiting (3.3% F vs 1.7% M) and dieting pills (2.8% F vs 1.5% M) undertaken along with more usual thinning strategies like dieting and exercising. Girls were more prone than boys to exercise as a way to lose weight (41% vs 31.7%). This study showed that there is a deep gap between actual weight and perceived body-image and weight. This study is one of the first of this kind in Italy and calls for primary prevention and health education programs aimed at improving teen body-image as a strategy to reduce the eating disorder epidemics spreading among young people