Aquatic

In seafood processing, preventing moisture loss and the depletion of key nutrients such as amino acids is critical to maintaining quality. However, conventional slow-freezing methods or unstable temperature control often result in the formation of large ice crystals. These crystals damage cell walls and fibrous structures, leading to excessive fluid loss during thawing and causing both nutrient loss and undesirable discoloration. To overcome these challenges, advanced cryogenic freezing solutions offer a way to preserve freshness, lock in nutrients, and ensure superior product quality. Messer’s uses food-grade liquid nitrogen for direct spray cooling or freezing, achieving a freezing rate of ≥5 cm/h. The formation of fine ice crystals helps preserve cell structure intact, ensuring that upon thawing there is no loss of cellular fluids, reducing drip loss and retaining nutrients to the greatest extent. Messer provides professional quick-freezing equipment (cabinet-type, linear tunnel-type, IQF freezers, etc.), which goes beyond traditional freezing solutions and creates core values for customers: • Ultra-fast freezing: Freezing time is reduced to 1/6 of that of traditional mechanical quick freezing, with juice loss as low as 0.2~0.8%. • High efficiency and energy saving: Optimized spraying design reduces liquid nitrogen consumption by more than 15%. • Economical and compact: Low initial investment, small footprint, and high operational efficiency. • Reliable and durable: Simple system, long equipment service life, and low maintenance cost. • Flexible and controllable: Stepless adjustment of freezing/cooling time, with flexible adaptation to products and output. Diverse processes: Supporting freezing, cooling, and ”flash freezing", with gas consumption as low as 0.3~2.5 kg/kg.

Traditional ice preservation only slows bacterial growth and poses risks to the safety and quality of seafood. Messer’s Gourmet MAP solutions combine gases such as carbon dioxide, oxygen, nitrogen, or their mixtures to actively create protective atmospheres, extending shelf life and safeguarding product freshness. • Extended freshness and shelf life: Higher carbon dioxide concentrations effectively inhibit the growth of spoilage bacteria and molds, significantly reducing product decay and extending storage periods. • Enhanced appeal and freshness: Adjusting the ratio of oxygen in MAP keeps the bright red color of fish such as tuna, salmon, and trout, presenting a fresher appearance and improving consumer appeal. • Preserve product integrity and reduce losses: Nitrogen as a packaging gas helps prevent collapse and deformation, avoids liquid seepage, and keeps products looking full, clean, and attractive after transport. Messer’s Gourmet gases use tailor-made mixtures (such as carbon dioxide, oxygen, nitrogen, or their blends) to replace air in packaging or vacuum packaging，creating an optimal atmosphere that maintains seafood freshness and natural nutrients. The solution reduces microbial growth, lowers distribution and storage costs, enhances product value, and strengthens competitiveness in the marketplace — making it the preferred choice for the seafood industry.

Maintaining freshness of seafood and other perishable goods relies on a consistently low and stable temperature. Messer’s cryogenic technology based on dry ice (solid CO₂) ensures a safe, reliable, and cost-effective full-chain cold logistics solution. Messer offers a complete portfolio of active refrigeration methods, ranging from dry ice pellets and blocks to advanced systems such as Cryo2Pack®, Siber® SnowDrop®, designed to meet the needs of standalone isolated containers. For large-scale cold chain logistics, Messer also the solutions such as EcoLIN® and SilenSnow® which can provide more powerful cold energy. • Ultra-fast cooling: Cryogenic Gases deliver strong cooling capacity and rapid temperature reduction. • Zero-electric operation: independent of external power or vehicle engines, preventing cold chain interruption • Flexible temperature control: Capable of meeting requirements from chilled storage (0–4 °C) to deep freezing (−18 °C and below). • Quiet operation: ideal for nighttime distribution in urban centers. • Smart and convenient: Fully automated production and dosing, simple operation, and low maintenance requirements. • Eco-friendly: Zero fuel, zero emissions, the idea partner for the for new energy refrigerated vehicles. Messer solutions deliver rapid cooling, high reliability, quiet operation, and excellent preservation, ensuring that your perishable goods remain protected throughout the entire cold chain — from source to final destination with minimal damage and maximum logistics efficiency.