Facultad Regional San Francisco

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Subject: search.filters.subject.essential oils

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    Organic chemistry in harmony with our sensations.
    (2020-10) Guntero, Vanina A.; Peralta, Micaela; Ferretti, Cristian Alejandro; Mancini, Pedro M. E.; Kneeteman, María N.
    En este trabajo se muestran el desarrollo y los resultados de una experiencia destinada a la enseñanza de química orgánica y orientada hacia estudiantes de una escuela secundaria. El tema seleccionado está relacionado al estudio y preparación de perfumes. Su objetivo principal fue evaluar en qué medida el mismo promueve el estudio de la química. El proyecto se realizó durante cinco semanas de clases. En él se contemplan las capacidades fundamentales de lectura, escritura, oralidad y pensamiento crítico. Los resultados obtenidos indican que se logró afianzar contenidos, relacionarlos con otros desarrollados previamente, mejorar la redacción y la presentación de informes, desarrollar un trabajo colaborativo, y mejorar las habilidades en el manejo del material de laboratorio.
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    Preparation of gel alcohol flavored with essential oils. An employ of laboratory techniques in the organic chemistry study
    (2017) Guntero, Vanina A.; Kneeteman, María N.; Mancini, Pedro M. E.
    The main aim of this work is to teach chemistry through a practical application. In it is described a chemical experiment for high school students. They learn fundamental concepts through the preparation of gel alcohol flavored. The experiment has four stages: search information, cultivation of aromatic plants, extraction of essential oils, and elaboration of gel alcohol. The hydro distillation technique was applied in order to obtain the corresponding essential oil. The aromatic plants used were cloves, lavender, rosemary, salvia and cedron. The essential oils were analyzed by gas chromatography. The experiment demonstrated to the students the application of chemistry for the preparation of personal care products making concepts more tangible than a simple reading.
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    Introducing organic chemistry students to the extraction of natural products found in vegetal species
    (2017) Guntero, Vanina A.; Kneeteman, María N.; Mancini, Pedro M. E.
    This work constitutes a new strategy for teaching-learning the chemistry of natural products, being the students active participants in the process. Results showed in this activity contributed not only to the understanding of the subject but also turned out to be an important pillar of motivation. An essential oil is any of a class of volatile oils that give plants their characteristic odor. Essential oils are also known as ethereal oil, volatile oil, aetherolea, or simply as the oil of the plant from which they are extracted, such as oil of clove. The oil is “essential” in the sense that it contains the “essence of” vegetal specie fragrance, the characteristic fragrance of the plant from which it is derived. These can be extracted from different parts of plants such as stems, leaves and flowers. In this work, two conventional methods (steam distillation and Soxhlet extraction) and one non-conventional method (microwave-assisted extraction), was developed under different conditions from clove. The yield of clove oil and yield of eugenol were obtained; and the concentration of eugenol present was assessed by gas chromatography. The main objective was that the experimental activity with the theoretical foundation will provide to the students of organic chemistry the ability to link concepts and develop skills in the laboratory.