I bought salmon a week ago and wanted to make it for dinner today. When I took it out of the refrigerator, it had a yellow stain on it. What is it

A yellow stain on salmon, especially if it’s been stored for a week in the  refrigerator, could be a sign of oxidation or spoilage. Here are a few potential causes for the yellow stain:

1. Oxidation

• Salmon, like many types of fish, contains fatty acids, particularly omega-3 fatty acids, which can oxidize when exposed to air. This process can sometimes result in a yellowish hue on the flesh, especially if the salmon has been stored for a while.
• While oxidation doesn’t necessarily mean the salmon is spoiled, it can affect the flavor and texture of the fish, making it less appetizing.

2. Spoilage or Bacteria Growth

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