Tuna can
Tuna canned products are processed seafood products made from longfin tuna or yellowfin tuna. They come in three varieties: water-packed, oil-packed, and seasoned. The containers used are all-lacquered tinplate cans that are both sulfur- and acid-resistant. These products are manufactured through a high-temperature sterilization process.
Sardine can
Sardine canned food is a ready-to-eat canned product made primarily from sardine meat and tomato sauce, available in various flavors such as tomato-based and oil-packed. The raw ingredients undergo preliminary processing—including washing, salting, and frying—before being combined with spices and sealed through a high-temperature sterilization process. The finished product features tender, edible fish bones.
Sterilization characteristics of canned tuna
1. Production process:
Before canning, tuna must be carefully cooked to ensure that the fish meat is thoroughly cooked, skin and bones are removed, and the flesh is sliced into neat pieces. During canning, some brands use vegetable broth, oil, or water as the liquid inside the can to maintain freshness, stabilize quality, and enhance texture.
2. Shelf stability:
Canned tuna typically has a shelf life of 2 to 5 years—or even longer—depending on the type of container and packaging materials used. The canning process ensures that the product remains safe for consumption and maintains its quality stability even after prolonged storage.
3. Quality Management:
The canned tuna production process includes key steps such as receiving frozen fish, slaughtering and processing, pre-cooking and processing, cooling and packaging, and sterilization. Each stage is critical for ensuring product safety, extending shelf life, and maximizing output.
4. Volatiles and Storage:
The volatile compounds in canned tuna are closely related to storage conditions. At 4°C, the main volatile compounds are 3-methylbutanal, dimethyl ketone, and hexanal; at 25°C, they shift to hexanal, 1-octanol, and 3-methylbutanal. Therefore, selecting appropriate storage conditions is crucial for ensuring the consistent quality of tuna.
Sterilization characteristics of canned sardines
1. Raw Material Processing:
Sardines are caught from the sea and transported to a processing plant. To ensure freshness, the processing begins immediately. The fish are washed in cold water to remove impurities and scales. After washing, the sardines are immersed in brine tanks.
2. Quality Control and Packaging:
After undergoing rigorous sterilization, the jars must be carefully inspected to ensure they are free of any defects. Next, the jars should be labeled appropriately and then properly packaged.
3. Canning:
The cleaned sardines are packed into cans. The cans are then filled with oil or sauce. The cans are subsequently sealed tightly to ensure the purity of their contents and prevent any external contaminants from entering.
4. Shelf life and safety:
Canned sardines that have undergone rigorous sterilization processes can enjoy a significantly extended shelf life—typically lasting several years. However, to ensure food safety and quality, once the can is opened, it should be consumed immediately or properly refrigerated to prevent recontamination.
Sterilization Precautions for the Fish and Seafood Industry
Raw material quality:
We consistently start with the freshest, highest-quality tuna and sardines. During the selection process, we rigorously ensure that the chosen ingredients show no signs of spoilage or unpleasant odors, thereby guaranteeing the premium taste and nutritional value of the final product.
Jar sterilization:
Disinfect the jars properly before use. This step helps prevent contamination and ensures a longer shelf life for the canned goods.
Temperature control:
The sterilization process requires heating canned products to a relatively high temperature. To ensure that all bacteria and other harmful microorganisms are thoroughly eliminated while preserving the original quality and nutritional value, it is essential to precisely control the heating temperature.
Fatty acids:
High-temperature environments can lead to oxidation of fatty acids in sardines, thereby affecting their quality. However, recent research has found that tuna and sardines processed using high-pressure thermal sterilization show no significant difference in fatty acid content compared to their counterparts processed by traditional sterilization methods. This finding is of great significance for ensuring the food safety and consistent quality of fish products.
Need help?
Would you like to customize a sterilization solution for your product?
If you need any assistance, please don’t hesitate to let us know—we’ll provide you with professional guidance!
Our Strengths
With a modern production base spanning 15,000 square meters, the company continuously explores and innovates in the field of food machinery and has now become a key driving force behind the industry’s development.
Production Strength
With independent import/export rights, pressure vessel manufacturing license, and ISO9001 certification, our 15,000 m² modern base drives innovation in food machinery.
Corporate Philosophy
Specialization: Focus on R&D and manufacturing for efficient production. Series Development: Expand product lines to meet diverse needs. Standardization: Full-process standards ensure consistent quality.
Production & Manufacturing
Strict workflows and a traceability system guarantee reliable, stable products with uniform sterilization effects.
After-sales Service
7×24 support, reasonable costs, and localized services in 17 countries ensure continuous equipment operation.
Our clients
Contact Us
Website
