Product Parameters

BQF Frozen Bonito

Product Details

bQF Frozen Bonito

Compressed into dense, solid slabs where multiple whole fish are frozen together as a single unit. This block quick freeze method prioritizes storage efficiency and shipping economy: each uniform slab stacks neatly in cold rooms and containers, maximizing cubic capacity and reducing freight costs per metric ton. Bonito is a streamlined, muscular relative of tuna, featuring firm, dark red flesh with a bold, savory flavor and pronounced oceanic intensity. Rapid block freezing locks in the natural myoglobin, oil content, and dense texture – ideal for canneries, fishmeal plants, and high‑volume processors that thaw entire blocks for batch cooking, smoking, or katsuobushi production. Supplied whole round (head, tail, viscera intact; gutting available on request) in standard 10 kg or 20 kg cartons. A cost‑driven, space‑smart solution for industrial buyers who need volume and efficiency over portion flexibility.

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FAQ

01.What are the main advantages of BQF (Block Quick Frozen) bonito over IQF for industrial processing, and which industries benefit most from this format?

BQF bonito is frozen into a solid, dense block (typically 10‑15 kg per carton), achieving a packing density of approximately 950 kg/m³, which is about 30‑40% higher than IQF (≈650‑700 kg/m³). This significantly reduces shipping and storage space per kilogram of fish. For industrial users, BQF blocks can be processed directly without thawing: canneries can feed frozen blocks into band saws to produce uniform portions; surimi plants and fishmeal factories can grind frozen blocks directly, saving labor, energy, and time. BQF is the preferred format for canneries, surimi producers, fishmeal plants, and large‑volume bait suppliers that process entire blocks in a single batch. It is not recommended for restaurants or retailers that need portion‑control flexibility.

02.Bonito is a histamine‑forming species. What histamine limits apply to BQF frozen bonito for export to the EU and US, and how can buyers verify compliance?

Bonito belongs to the Scombridae family, classified as a histamine‑forming (scombrotoxin) species. For the EU, Regulation (EC) No 2073/2005 sets a nine‑sample plan with an average limit of 100 mg/kg and a maximum single sample value of 200 mg/kg. The US FDA enforces a stricter action level of 35 ppm (mg/kg). Histamine is heat‑stable – once formed, it cannot be destroyed by cooking, canning, or freezing. Buyers should contractually require batch‑specific histamine test reports from an ISO 17025‑accredited laboratory and temperature data logger reports from the container, confirming that the fish was rapidly chilled to ≤4°C within 6‑8 hours of capture and maintained at -18°C or below throughout transport. Any lot exceeding regulatory limits must be rejected.

03.How should a BQF frozen bonito block be correctly thawed for further processing, and what defects should a buyer inspect upon arrival?

For industrial processing, the most efficient method is to process the frozen block without thawing (e.g., saw cutting or grinding). If thawing is necessary, place the sealed block in a refrigerator at 2‑4°C for 18‑24 hours (depending on block size). Never thaw at room temperature or in warm water, as this promotes bacterial growth and histamine formation. Upon arrival, inspect the block for: (1) Block integrity – should be solid, with no large cracks or missing corners. (2) Ice crystal condition – fine, uniform ice crystals are normal; large, jagged, or cloudy patches indicate temperature abuse. (3) After thawing a core sample, check for ammonia odor, mushy belly, black slimy gills, or sunken eyes – any of these in >5‑10% of sampled fish justifies rejection. Proper documentation (temperature logger, inspection report) should accompany any claim.