Analysis of Trends in Caffeine Extraction in the Coffee Industry: A Scientometric Review

This scientometric review analyzes the advances and trends in the development of novel methods for extracting bioactive compounds from coffee residues, with a particular focus on caffeine as a secondary metabolite. Despite the growing attention toward the reuse of agricultural byproducts, residues generated during coffee harvesting and processing, such as pulp, mucilage, parchment, and coffee grounds, have received limited attention in scientific literature. Between 2002 and 2024, the number of studies targeting these byproducts has remained low, despite their high content of bioactive compounds of significant relevance to the food, pharmaceutical, and cosmetic industries. This gap in the literature underscores the need to explore innovative and sustainable approaches for the integral use of coffee residues. Furthermore, investigating these methods represents an opportunity to promote a circular economy, reduce environmental pollution, and diversify industrial applications of coffee byproducts, contributing to the sustainable development of the coffee industry.