AA BQF Horse Mackerel

Since AA grade is a commercial tier without a universal global standard, the contract must specify measurable metrics for third‑party verification. Upon thawing a representative sample from the BQF block, the fish must meet: (1) Scale loss ≤8% of body surface (no large bare patches exceeding 2 cm²); (2) Eyes – at least 95% of sampled fish must have bright, clear eyes (slightly less convex than AAA but not sunken or cloudy); (3) Gills – pinkish‑red to red, no brown or grey discoloration, no ammonia odor; (4) Belly – firm and intact (springs back when pressed); very minor bruising (≤1 cm diameter, not penetrating flesh) is acceptable; (5) Odor – clean, fresh sea smell, no ammonia or sour notes. Sampling: randomly inspect 5‑10% of cartons. If >10% of sampled fish fail any of these metrics, the buyer may reject the lot or claim a price discount. Third‑party inspection at the loading port (e.g., SGS) is strongly recommended to avoid post‑shipment disputes.

AAA grade requires flawless appearance: ≥95% scale retention, perfectly bright and fully convex eyes, deep‑red gills, and zero belly bruising. AA grade allows minor visual defects: up to 8% scale loss, eyes that are bright but slightly less convex, pinkish‑red gills, and very minor belly bruising (≤1 cm) that does not penetrate the flesh. However, the meat yield and nutritional value (protein 18‑25g/100g, omega‑3 content) are identical to AAA grade. For volume buyers in canning, surimi, deep‑frying, and budget foodservice, these minor visual defects are completely masked by processing. AA offers the best value for money because it delivers the same protein yield and safety as AAA at a lower procurement cost, without compromising final product quality for most commercial applications.

At standard commercial temperature (-18°C), AA BQF horse mackerel maintains good sensory quality for 12‑15 months from the production date. However, longer storage (beyond 15 months) can lead to: (1) Slight texture softening – increased drip loss (from 3‑5% up to 8‑10%); (2) Mild fat oxidation – possible faint stale or cardboard‑like odor; (3) Minor belly discoloration – particularly in fish with pre‑existing bruising. For best results: use within 12 months for deep‑frying and grilling, within 15 months for canning and surimi (where slight quality decline is masked). After 18 months, fish remains safe but is better suited for fishmeal or pet food. To maximize shelf life, store at -20°C or below and avoid temperature fluctuations. Whole round fish stored at -20°C have significantly longer edible life than fillets – research shows whole horse mackerel stays acceptable for 5 months at -20°C, while fillets show rancidity within 1 month.