Determinação do teor de cafeína em bebidas: Da revisão integrativa da literatura à análise bibliométrica

Abstract

Caffeine is classified as one of the most consumed legal psychoactive substances worldwide. Its effects on human behavior have been studied for years ranging from harmful effects to human health when consumed in excess, such as problems related to increased blood pressure, even benefits such as cardiac muscle stimulation. The identification of caffeine content can be performed using several techniques such as gravimetry, UV-Vis spectrophotometry, High-Performance Liquid Chromatography, among others. Therefore, an integrative literature review to bibliometrically analyze published scientific articles on methodologies used to determine the caffeine content in beverages was performed as the objective of this study. The data was based on scientific articles published in journals, dissertations and papers available in the Portal de Periódicos Capes database, Google Scholar and in the Theses and Dissertations Catalog portal. An integrative review was carried out and bibliometric analysis technique for the analysis of the results. Fifteen works were selected, between the years 2011 and 2020, which are classified according to the year of publication. The largest number of works were published in the years 2013 and 2018 (20%). The most prominent research area was Chemistry, accounting for 60% of the selected works. The most common sub-theme in the research was the technique of caffeine determination by High-Performance Liquid Chromatography (HPLC) and Spectrophotometry, with 10 selected works. The authors that most published on the topic in question were GALACHO; BIZZOTTO and BALLUS, publishing 4, 5 and 6 works, respectively. The classification was also carried out regarding the database with the most publications, highlighting Google Scholar, with 60%, and the last classification was aimed at the qualis of articles, ranging between B1 and B4. Among the 15 studies on the various techniques for caffeine determination, 8 included the analysis or comparison by the spectrophotometry technique, being classified as the most used technique in the studies. Based on this research, it is possible to affirm that it may contribute to the development of future work related to methodologies used for caffeine determination in a practical and easily accessible way, given that much information is gathered in a single work, also enabling the correction of errors and methodologies update. The results obtained with this research were limited regarding the production of data and therefore future research using other databases are necessary.