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Updated: Aug 30, 2025

Preparation of High-Quality Fermented Fish Product
Published on: August 23, 2019
Advances in the Formation and Control Methods of Undesirable Flavors in Fish
Tianle Wu1, Meiqian Wang1, Peng Wang1
1College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, China.
Abstract:
Undesirable flavor formation in fish is a dynamic biological process, decreasing the overall flavor quality of fish products and impeding the sale of fresh fish. This review extensively summarizes chemical compounds contributing to undesirable flavors and their sources or formation. Specifically, hexanal, heptanal, nonanal, 1-octen-3-ol, 1-penten-3-ol, (E,E)-2,4-heptadienal, (E,E)-2,4-decadienal, trimethylamine, dimethyl sulfide, 2-methyl-butanol, etc., are characteristic compounds causing off-odors. These volatile compounds are mainly generated via enzymatic reactions, lipid autoxidation, environmentally derived reactions, and microbial actions. A brief description of progress in existing deodorization methods for controlling undesirable flavors in fish, e.g., proper fermenting, defatting, appropriate use of food additives, and packaging, is also presented. Lastly, we propose a developmental method regarding the multifunctional natural active substances made available during fish processing or packaging, which hold great potential in controlling undesirable flavors in fish due to their safety and efficiency in deodorization.
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