期刊
FOODS
卷 11, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/foods11060791
关键词
rapid methods; dielectric properties; conformity; cephalopods; adulteration; quality control
资金
- project SeaTraces: Smart Traceability and Labeling Toolbox for a Sustainable Seafood Production (Interreg Atlantic Area Programme) [EAPA_87/2016]
- project SEAFOOD-AGE: Smart and eco-innovative SEAFOOD processes and products for healthy AGEing (Interreg Atlantic Area Programme) [EAPA_758/2018]
A rapid and non-destructive method based on TDR analysis was developed to detect and quantify water content in octopus muscles, allowing for control of abusive water addition. This method can be used by the industry and quality control inspections for assessment of octopus quality and compliance with legislation, contributing to sustainable resource use.
A rapid and non-destructive method based in time domain reflectometry analysis (TDR), which detects and quantifies the water content in the muscle, was developed for the control of abusive water addition to octopus. Common octopus samples were immersed in freshwater for different periods (0.5-32 h) to give a wide range of moisture contents, representing different commercial conditions. Control and water-added octopus were analyzed with a TDR sensor, and data correlated with moisture content were used for calibration and method validation. A maximum limit of moisture content of 85.2 g/100 g in octopus is proposed for conformity assessment, unless the label indicates that water (>5%) was added. Calibration results showed that TDR analysis can discriminate control and water-added octopus, especially for octopus immersed for longer periods (32 h). In addition, moisture content can be quantified in octopus using only TDR analysis (between 80 and 90 g /100 g; RMSE = 1.1%). TDR data and correlation with moisture content show that this non-destructive methodology can be used by the industry and quality control inspections for assessment of octopus quality and to verify compliance with legislation, promoting fair trade practices, and further contributing to a sustainable use of resources.
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