Fatty acids in aquatic products linking food webs processing quality and traceability systems
學生姓名:
李宜蓁
指導教授:
方銘志
學期:
114下
摘 要:
Fatty acids (FAs) serve as fundamental biochemical components in aquatic ecosystems, influencing physiological functions and reflecting nutritional quality across food webs. FAs act as effective tracers of energy flow because they are typically released without degradation during digestion and stored in consumer tissues, allowing for the reconstruction of dietary pathways from food web origins. In aquatic systems, shorter food chains facilitate the efficient transfer of lipids from primary producers, such as algae and phytoplankton, to higher trophic levels. This research integrates the multi-dimensional role of FA profiling from ecological origins to industrial processing and market regulation. At the ecological level, studies in tropical river systems demonstrate that aquatic macroinvertebrates play a vital role in trophic upgrading, concentrating essential nutrients like eicosapentaenoic acid (EPA) and arachidonic acid (ARA) from primary producers to sustain fish populations. To ensure these natural nutritional values are effectively preserved for human consumption, technical evaluations of extraction methods indicate that microwave29 assisted extraction (MAE) represents the most efficient green technology. MAE provides superior oil yields while maintaining optimal oxidative stability and essential lipid quality indices compared to traditional methods. Furthermore, because these biochemical signatures are shaped by the specific diet and environmental conditions at the base of the food web, they act as robust natural tags for provenance monitoring. FA profiling achieves high classification accuracy (80%–100%) in identifying the geographic origin of seafood even at fine spatial scales of less than 30 kilometers. Ultimately, this integrated framework highlights FA profiling as a critical scientific instrument for evaluating ecosystem health, optimizing food production, and reinforcing global seafood traceability and safety.
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