Health effects of omega-3,6,9 fatty acids: Perilla frutescens is a good example of plant oils

Perilla frutescens seeds are a good source of polyunsaturated fatty acids (PUFAs). The seeds of perilla are small end globular weight about 4 g/1000, contained approximately 35–45% oil. However the leaves are a very poor source of oil, since they contain only 0.2%. In addition, only the seed oil contains the omega 3 fatty acid alpha-linolenic acid (ALA). In comparing to other plant oils, perilla seed oil consistently contains the one of the highest proportion of omega-3 (ALA) fatty acids, at 54–64%. The omega-6 (linoleic acid) component is usually around 14% and omega-9 (Oleic acid) is also present in perilla oil. These polyunsaturated fatty acids are most beneficial to human health and in prevention of different diseases like cardiovascular disorders, cancer, inflammatory, rheumatoid arthritis etc

La colaboración científica y los espacios de la química: un estudio de caso español en la primera mitad del siglo XX

The study of schools of scientific research and research groups has been approached from different disciplines, such as sociology or the history of science, with the aim of analyzing the changes and evolution of science and its paradigms, the professionalization of scientific activities, scientific styles, emergence of scientific specialties and the intensity of scientific relationships. This paper considers the role of José Casares Gil (1866-1961) for producing a historical study on the relation between research schools, scientific sites and scientific collaboration. José Casares ran several university and institutional laboratories, such as the central customs laboratory of Madrid, and the chemical analysis laboratories of the faculties of pharmacy in Barcelona and Madrid. These spaces allowed him to be in contact with many students, colleagues, industrialists and members of other institutions. By considering these spaces this paper will discuss whether Casares succeeded in creating a research school.<br><br>Las escuelas y grupos de investigación científica (<em>research schools</em>) pueden ser analizados desde diferentes disciplinas, como la sociología o la historia de la ciencia, con el fin de estudiar los cambios y la evolución de la ciencia y sus paradigmas, la profesionalización de determinadas actividades científicas, los estilos de liderazgo científico, el surgimiento de especialidades científicas y la intensidad de las relaciones científicas. Este artículo considera el caso del químico español José Casares Gil (1866-1961) para estudiar históricamente la relación entre escuelas de investigación, espacios de la ciencia y colaboración científica. José Casares dirigió varios laboratorios universitarios e institucionales como el laboratorio central de aduanas y los de análisis químico de las facultades de farmacia de Barcelona y Madrid. En ellos entró en contacto con numerosos estudiantes, colegas, industriales y miembros de otros organismos. La aproximación a esos espacios permitirá discutir si Casares logró formar con éxito una escuela de investigación científica