As a high-end deep-sea ingredient, salmon is favored by the market for its tender meat, rich nutrition, and high concentration of quality proteins and unsaturated fatty acids. However, due to its high moisture and nutrient content, microorganisms like bacteria and mold easily proliferate during harvesting and processing. Furthermore, traditional processing and disinfection methods carry numerous drawbacks. The chlorine-containing disinfectants and hydrogen peroxide currently widely used in the industry not only tend to leave chemical residues and impair the taste and color of the fish, but also make full-process precise disinfection difficult to achieve. This leads to issues such as incomplete raw material pretreatment, cross-contamination on production lines, and short product shelf life. These challenges increase quality control costs for enterprises and restrict the development of raw salmon cold-chain logistics and export trade, posing a long-standing core problem for aquatic processing companies.

Tailored to the specific characteristics of salmon processing, the hypochlorous acid (HOCl) generator utilizes advanced electrolysis technology, using common salt and pure water as raw materials to generate slightly acidic hypochlorous acid disinfectant solution on-site and in real-time. It requires no storage of chemical agents, offering a green, safe, and on-demand solution. Aligned with FDA and USDA organic food processing disinfection standards, this technology serves as a food-grade compliant disinfection scheme. It perfectly adapts to the entire salmon processing chain—from raw material pretreatment, fine portioning, washing and sterilization, and equipment disinfection, to finished product preservation—achieving an integrated, precise, gentle, and highly efficient disinfection and preservation process.

In practical processing applications, this equipment establishes a standardized and refined operational workflow.

l Raw Material Pretreatment: Spraying or soaking whole fish with a low-concentration hypochlorous acid solution (20–30 ppm) rapidly kills pathogenic and spoilage bacteria on the surface within seconds, drastically reducing the initial colony count and mitigating microbial contamination risks from the source.

l Fine Processing (Descaling, Slicing, Trimming): Continuously rinsing ingredients with a precise 1 ppm hypochlorous acid aqueous solution inhibits bacterial growth continuously and prevents cross-contamination between procedures without damaging the fish texture or altering its original flavor and color.

l Environmental & Equipment Disinfection: The hypochlorous acid solution generated can fully cover processing countertops, knives, conveyor systems, and workshop air environments, enabling safe, human-present disinfection to purify the production environment comprehensively.

Compared with traditional disinfection processes, the application advantages of the hypochlorous acid generator are particularly prominent:

1. Safe with Zero Residues and Zero Ingredient Loss: After sterilization, hypochlorous acid rapidly degrades into ordinary water, leaving no chemical residues or odors and preserving the salmon's nutritional structure and taste quality. Because it eliminates the need for secondary rinsing, it significantly simplifies processing steps while saving water resources and labor costs.

2. High Sterilization Efficiency and Long-Lasting Inhibition: It achieves an extremely high kill rate against common aquatic pathogens such as Vibrio parahaemolyticus, Listeria, and E. coli, effectively reducing non-compliance rates in post-processing microbial sampling. Data shows that after deploying the equipment, the incidence of excessive colony counts in salmon processing drops significantly, and the average product shelf life can be extended by 3 to 4 days, significantly enhancing fresh logistics and export capabilities.

3. Green, Low-Carbon, and Cost-Effective: The equipment prepares the solution on-site on demand, eliminating the need to procure or store various chemical disinfectants. This avoids issues like chemical expiration waste and storage safety risks while easing wastewater treatment pressures and meeting green production standards for food processing.

Feedback from multiple aquatic processing enterprises following implementation shows that large-scale adoption of hypochlorous acid generators has completely overcome the traditional salmon processing dilemma of "heavy disinfection, quality damage, high residues, and short preservation." It not only ensures smooth passage through food safety spot checks and foreign trade audits at all levels to avert food safety risks, but also enhances market competitiveness through stable product quality—helping enterprises expand into diverse sales channels such as high-end supermarkets, cross-border trade, and prepared dish processing.