Abstract
This study tested the gel properties, quality of Alaska pollock surimi subjected to different temperature treatments. Results showed that when the heating temperature is 110°C, the water‐holding capacity (WHC) and texture of the surimi and gel strength increased, but as the heating temperature increased, the gel strength decreased significantly (p < 0.05), and ultimately destroyed. The heating temperature had no significant effect on the whiteness of the surimi gel, although it did have a significant effect on volatile components (p < 0.05). Fourier transform infrared (FT‐IR) spectroscopy suggested that with increasing temperature, protein secondary structure of the random coil received maximum damage, leading to protein aggregation and ultimately greatly reduced gel strength. At 100, 105, 110, 115, and 121°C, the surimi gel was determined 37, 46, 49, 52, and 56 volatile components, from of aldehydes, ketones, alcohols, hydrocarbons, and aromatic compounds. These results indicate that heat treatments have an important influence on the gel properties and volatile components of Alaskan pollock surimi gel, and the treatment parameters can be valuable for the production of ready‐to‐use minced fish products.
Highlights
Surimi products are a rich source of nourishment
The accurate extraction of volatiles is critical in this process, and various extraction methods are used for volatile organic compounds for the whole determination (VOCs) in seafood, such as steam distillation (SD) “purge and trap” (P&T) (Conde-Hernández, Espinosa- Victoria, Trejo, & Guerrero-B eltrán, 2017), dynamic headspace
Water-holding capacity is a crucial physical parameter closely related to the quality of surimi gels
Summary
Surimi products (surimi comprising mainly salt-soluble myofibril proteins) are a rich source of nourishment. The accurate extraction of volatiles is critical in this process, and various extraction methods are used for volatile organic compounds for the whole determination (VOCs) in seafood, such as steam distillation (SD) “purge and trap” (P&T) (Conde-Hernández, Espinosa- Victoria, Trejo, & Guerrero-B eltrán, 2017), dynamic headspace. The findings could provide important theoretical and practical guidance for the surimi products
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