Revista de la Facultad de Ciencias Químicas

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Browsing Revista de la Facultad de Ciencias Químicas by Subject "Actitudes"

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    Actitudes hacia la química en estudiantes universitarios conforme avanzan en la carrera
    (Universidad de Cuenca, 2015-04-01) Silvina Reyes, María; Porro, Silvia; Pirovani, María Elida
    The aim of this work was to estimate the change of the student attitudes towards chemistry on biology careers (“Profesorado en Biología and Licenciatura en Biodiversidad”) at Universidad Nacional del Litoral, Santa Fe, Argentina. The student attitudes were studied during three stages: at the beginning (1st year), during (3rd year) and at the end (5th year) of their careers. The instrument chose to assess the attitudes of the students was a questionnaire according to Likert scale. All the students who attended each of the analyzed years (45, 30 and 20 students respectively) were surveyed. The obtained results indicate statistically significant differences (p ≤ 0.05) between attitudes towards chemistry presented by students of 3rd and 5th with respect to 1st year. This research showed that there is a positive trend in attitudes toward chemistry as students progress through university education. It could be inferred that it is possible to improve the attitude of the early college years, whether methodologies of teaching and evaluation, both in the last years of high school, and in the first years of college, are reviewed, to improve the attitude towards the chemistry of the students of biological careers from the beginning.
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    Is there a need for “healthy” chocolate? Systematic literature review
    (Universidad de Cuenca, 2016-04) Vintimilla Alvarez, María Cecilia
    Background: Chocolate has special properties that help to protect the human body against cardiovascular diseases; it increases HDL cholesterol and decrease blood pressure. Chocolate consumption also helps to reduce stress, elevates mood and reduces tiredness. The purpose of this review is to identify, select, organize and summarize studies that investigate chocolate in relation to health, sensory characteristics and people’s attitudes. This report is part of the master thesis: Is there a need for “healthy” chocolate? Systematic literature review and consumer research in Belgium and in Denmark, submitted by the author in June 2015 at Aalborg University in Copenhagen. Methods: This study presents three areas related to chocolate: Chocolate and its relation to health, Chocolate sensory characteristics and acceptance, and attitudes towards Chocolate. A systematic literature review has been done to identify, select, organize and summarize studies that investigate chocolate in relation to these three areas. Four databases were chosen: PubMed, Science Direct, Scopus and Web of Science because of their extension and because they overlay cross disciplinary researches. Results: A total of 2062 hits were obtained in the four databases. In total sixty articles met the criteria and were identified as relevant. The articles were classified according to the three areas included in the study. In relation to health, it has been stated in many studies that polyphenols in chocolate can improve health, especially cardiovascular diseases related. Regarding sensory characteristics and acceptance of chocolate, it has been said that chocolate shape has an influence on chocolate perception. Polyphenols cause astringency and bitterness to chocolate making it not too appetizing for consumers; however for health reasons, polyphenols should be kept. Concerning the attitudes towards chocolate, there are many factors that lead to chocolate craving. Chocolate is the most craved food item in North America. It influences people’s mood and create a satiety feeling. Conclusion: Based on this review it can be concluded that a “healthy” chocolate could be part of a healthy diet. People like to indulge in chocolate, women more than men. The literature supports the health properties that chocolate consumption has, for instance, it is necessary to work on chocolate product development.