lautnusantara.com Storage temperature and time are crucial factors in maintaining the quality of fish, including Sweetlips (Plectorhinchus spp.), a lean fish native to tropical waters. Because Sweetlips are tropical fish, spoilage (enzymatic degradation and bacterial growth) can occur very quickly if not promptly handled at low temperatures.
Here are the temperature and storage time guidelines for maintaining the quality of fresh Sweetlips:
1. Short-Term Storage (Chilling)
The main goal of short-term storage is to maintain the fish's optimal condition, close to the condition it was when it was just killed.
0°C to 4°C
2 to 3 days
Storage in Ice (Icing)
Details and Tips:
- Temperature 0°C (Ice Temperature): This is the best storage temperature for maintaining fish freshness. Fish should be stored directly in a layer of flake ice with an adequate ice-to-fish ratio (e.g., 1:1 or 1:2) in an insulated container.
- Refrigerator Temperature (4°C or Less): If stored in a regular refrigerator (not on ice), cleaned Sweetlips fish placed in an airtight container will only maintain their quality for about 2 days.
- Important: Even a slight increase in temperature (e.g., from 0°C to 4°C) can double the rate of fish spoilage.
2. Long-Term Storage (Freezing)
To maintain the quality of Sweetlips meat for weeks to months, freezing is the necessary method.
- Ideal Temperature Best Method
-18°C or Lower
6 to 12 months
Freezer Storage
Details and Tips:
- Standard Freezer Temperature (-18°C): At this temperature, microbial growth almost completely stops, so fish can last 6 months or longer.
- Blast Freezing: For best results, especially on an industrial scale, a quick freezing process at -30°C to -40°C is highly recommended. This rapid freezing creates very small ice crystals, thus better preserving the texture of the Sweetlips fish meat when thawed.
- Preparation: Ensure the Sweetlips fish have been cleaned (gills and guts removed), thoroughly washed, and vacuum-packed or air-tightly packaged before placing them in the freezer to prevent freezer burn (drying out the surface of the meat).
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