The Path from Ocean to Plate: Modern Fish Processing Machines

The fish processing industry is a significant component of the global food supply chain. It involves various activities like cleaning, cutting, freezing, and packaging fish for human consumption or other uses. The efficiency of these processes depends highly on the quality and suitability of the equipment used.

This article offers a comprehensive look at the essential equipment used in fish processing, aiding both industry players and interested individuals in making informed decisions.


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Initial Sorting and Grading

Automatic Sorting Machines

In fish processing, the first step usually involves sorting and grading the fish based on size, species, and quality. Automatic sorting machines are a boon for this phase. They utilize sensors and conveyors to segregate fish, significantly reducing manual labor and increasing throughput. For initial sorting, companies often rely on equipment such as Ishida’s Weighing and Grading Systems, known for their accuracy and speed in sorting multiple fish sizes.

Grading Systems

While sorting provides an initial layer of categorization, grading equipment allows for more nuanced classification. Here, fish are evaluated based on weight, length, and overall quality, which can affect the final product’s market value. The Scanvaegt Grading Systems are often cited for their efficiency in grading fish based on weight, length, and overall quality, giving you a detailed layer of categorization.

Scaling and Gutting Machines

Drum Scalers

Scaling is the process of removing scales from the fish’s skin. Drum scalers are particularly effective; the fish are tumbled in a rotating drum with a textured inner surface that removes the scales. For scaling, the Uni-Food Drum Scaler is popular for its efficient design. The textured inner surface of its drum effectively removes scales as the fish are tumbled inside.

Gutting Machines

Gutting is essential for preserving the quality of the fish. Automated gutting machines use blades and suction to remove internal organs swiftly, thus maintaining hygiene and expediting the whole process. BAADER’s 142 Gutting Machine is an industry favorite, known for its hygienic and precise removal of internal organs.

Filleting and Skinning Equipment

Filleting Machines

Filleting is a skillful task, but modern filleting machines can handle it with ease. These devices employ precise blades that separate the flesh from the bones, ensuring maximum yield. One notable machine for filleting is Marel’s MS 2730 Filleting Machine, which promises high yields and excellent fillet quality.

Skinning Machines

After filleting, the next step is usually skinning. Skinning machines use rubberized belts to grip the fish while a blade separates the skin from the flesh. This is vital for certain types of products like skinless fillets. The Trio FDS machine is popular for skinning, especially when handling delicate species, as it minimizes waste.

Washing and Quality Assurance

Wash Tanks

After undergoing various processes, the fish need to be thoroughly washed. Wash tanks equipped with high-pressure jets do this effectively. The Unifood Fish Washer is widely used for its thorough washing capabilities and efficient water usage.

Quality Control Systems

Quality assurance is non-negotiable in food processing. Visual inspection systems that use cameras and software can detect imperfections, discolored spots, or foreign objects in the fish. Key Technology’s VERYX Digital Sorters are used to ensure the quality of processed fish, eliminating defects or foreign material effectively.

Thermal Processing Systems

Blast Freezers

Freezing is the most common method of preserving fish. Blast freezers are designed to freeze fish quickly, thus maintaining texture and nutritional content. The DSI Horizontal Plate Freezer is a commonly used freezer in the industry, known for its rapid freezing capabilities.

Smoking Chambers

Some fish products are smoked for flavor and preservation. Smoking chambers offer a controlled environment where temperature and smoke levels can be regulated for optimal results. The AFOS Mini-Kiln is often chosen for smoking, due to its controlled environment and high-quality results.

Packaging Solutions

Vacuum Sealers

Vacuum sealing is crucial for extending the shelf life of processed fish. Vacuum sealers remove air from the packaging before sealing it, thus reducing bacterial growth. Henkelman’s Polar 2-95 is a popular choice for vacuum packing, offering robustness and efficiency.

Modified Atmosphere Packaging

This involves replacing the air inside the packaging with a different gas mixture, often prolonging the product’s shelf life and maintaining its freshness. A popular machine for this process is the Multivac T 300 H tray sealer, known for its reliability in gas flushing and sealing.

Sanitizing and Cleaning

Washdown Pumps

Cleanliness is vital in food processing. Washdown pumps are used to clean equipment and workspaces, utilizing high-pressure water jets. One often-used brand is the Kärcher high-pressure washers, appreciated for their durability and effectiveness in heavy-duty cleaning.

Sterilizing Equipment

Sterilization is often achieved through ultraviolet or heat-based systems, ensuring that all equipment remains free from harmful bacteria. The Steris V-PRO maX Low Temperature Sterilization System is commonly used for its efficiency in sterilizing a wide range of materials without damaging them.

Investing in the right equipment is crucial for any fish processing operation. The right tools not only increase efficiency but also ensure the final product meets the required quality standards. From initial sorting to the final packaging, each step in the process has its own set of specialized equipment that contributes to the overall effectiveness and profitability of the operation.


Osho Garg

About Author
Osho is Tech blogger. He contributes to the Blogging, Gadgets, Social Media and Tech News section on TecheHow.