Type of Meat That Exhibits Bloom

Bloom is a property of:

Correct Answer: Fresh Meat

Bloom is exclusively a property of fresh meat — it is the bright, cherry-red surface colour produced by oxymyoglobin (MbO₂) when the cut surface of fresh meat is exposed to oxygen in the air.

Why Only Fresh Meat?

• Cooked meat → myoglobin is denatured by heat → brown haemichrome; no bloom
• Frozen meat → metmyoglobin accumulates on thawing → brown; no bloom
• Cured meat → pink colour from nitroso-haemochromogen (stable pink pigment); not bloom

Bloom Formation

• Freshly cut meat: Myoglobin (Mb) — purplish-red
• On air exposure (15–20 min): Mb + O₂ → Oxymyoglobin (OxyMb) — bright red = BLOOM
• Further oxidation: OxyMb → Metmyoglobin (MetMb) — brown = loss of bloom

Commercial Importance

Retailers use High Oxygen Modified Atmosphere Packaging (HiOx-MAP) to maintain bloom and extend the visual shelf life of fresh meat cuts at retail.