Blue Strawberry

Nutrition, Food Science, Cooking….

Tag Archives: Pigments

Did you know??? Lobsters, Crabs and Shrimps…

we have moved permanently to http:www.StrawberryBlu.com

Lobsters, Crabs and Shrimps… All turn into Red and Orange when Cooked …

Lobsters, crabs, and shrimp have a variety of different colors present in their shells.
The red color is due to a pigment called “Astaxanthina”.

This pigment lies under the caratenoid family. Caratenoids, are pigments that produce
a reddish orange color (in shells and outer skins like in carrots).

Within the shells of lobsters, crabs and shrimps etc… this pigment is entrapped by protein chains.

The outer layers, of such shells, appear naturally dark colored (black, brown, green etc…).
Yet when they are cooked, the protein chains surrounding the pigment get degraded (denatured)
and so the astaxanthina gets released.

This pigment is naturally heat stable; consequently under heating conditions (cooking)
it doesn’t degrade and remains present within the shells.

As a result, after cooking (boiling) the lobsters, crab and shrimps all appear reddish in color….

See for yourself…

Before…

After…