Revisão sistemática a respeito de off-flavors causados por Geosmina e 2-Metilisoborneol (MIB) em produtos aquáticos

Abstract

This systematic review addresses the issue of sensory quality of freshwater fish farmed by aquaculture. Off-flavors are undesirable flavors and odors in farmed fish that affect the quality and acceptance of the product by the consumer, causing serious financial losses to the production chain. The PRISMA method was used to select articles related to the study theme, where 7,576 documents were analyzed, opting for recent articles, published in the last six years, obtained from the Scopus and Web of Science databases. After applying the exclusion terms (off-flavor, aquaculture, fish, articles, periods, GSM and MIB), forty-four relevant studies were obtained, in which we sought to identify the objectives of the study, the species studied, the farming system, results achieved, gaps and future studies of each investigated article, briefly reporting their objectives and results. Most studies emphasize the influence of water quality, climate issues, management, feed quality, especially the presence of cyanobacteria, algal blooms, fungi, and metabolic compounds such as GSM, MIB, among others, which contribute to the formation of unpleasant flavors and odors. The results highlight the need to improve management practices and control of altered flavors and odors in aquaculture, in addition to suggesting the need for further research to develop more effective and accessible methods. The importance of continuous monitoring of water quality is emphasized to prevent the formation of undesirable flavors. In summary, the review provides a comprehensive overview of undesirable flavors and odors in freshwater fish, identifying gaps in knowledge and proposing directions for future research, essential for the sustainability and quality of aquatic production.