Frozen
tuna meat fish range from dark red to lighter pink
that almost like white color unlike some of fish which only have white flesh. Different
with frozen tuna fish, when the meats are canned, the white tuna or known well
as Albacore tuna refers to lighter flesh while darker flesh tuna refers to
light or dark tuna. Today we like to share some information about dark versus
white tuna flesh which you like to find on both frozen and canned tuna meat. By
reading such information, you will understand about tuna fish better than ever.
Dark versus
white canned or frozen tuna meat information
1.
The source of coloration
According to the Earthlife
web, the darker and ligher red of tuna fish flesh color is basically comes from
myoglobin and hemoglobin. Oxygen is carried by myoglobin and it is useful for
the heart and muscles during your physical activities, while hemoglobin is a
protein which can be found in red blood cells that have a task to carry oxygen
from the lungs to the muscles and then brings carbon dioxide (CO) from tissues
to lungs. In the end, the dominant coloration will depend on the amount of
myoglobin and hemoglobin which is available in the muscles. Darker frozen tuna meat factory product meaning that the fish have a large
of amount of these two proteins, while lighter almost pink to white color
having none or just a bit amount of them.
2.
The muscles
High hemoglobin content
and capillaries usually can be found in muscle tissue with dark or red color.
It is presence in active fish that live in ocean and used for continuous
swimming just like what you found in tuna fish. According to the Earthlife Web,
Red muscles make up not more than twenty percents of total muscle tissue found in
fish. Meanwhile, white muscle has fewer capillaries, thicker muscle fibers, and
less oxygen content than red muscle when perform physical exertion. Most of the
characteristic of white muscle tuna fish is swimming with anaerobic motion
meaning that they do not need oxygen to function. They tend to use glycogen as
some fuel and spend it quickly during their activities. Activities such as
making movement of short and swift bursts is primarily used white muscles. As
for the pink muscles, they are between red and white muscles. They are used when
the fish are swimming with moderate amount of time, but using relatively high
speed.
3.
Canned tuna meat
Unlike frozen tuna meat Indonesia, yellowfin and skipjack
tuna fish which also popular to be referred as light canned tuna product contain
more dark flesh, while white tuna canned fish or often be labeled as Albacore
tuna can by the factory typically has lighter flesh coloration. You may find
canned light tuna preserved in waters, whereas Albacore or white tuna is canned
in a vegetable oil. How about the flavor? The flavor of light tuna is stronger
than the white one and unfortunately, the methyl mercury level as well as the
fat and calories of white tuna are three times higher than light tuna fish.
White tuna has less of omega 3 fatty acids amount than lighter tuna too and
thus in conclusion, it is safer and healthier to consume light tuna than canned
white or frozen tuna meat products.
4.
The quality of market tuna fish
The quality of frozen tuna meat sold in market is depends on the
color of the tuna flesh and other several factors as well. According to
Revolutionary Chefs, it is good to know that there are 4 general grades that
can be used to determine the quality of tuna meats as follow:
-
The 1st grade is a tuna
fish has dark, clear, and bright red flesh with firm texture and has a bit of
fat or none at all.
-
The 2nd grade is a
tuna with red muscle that is clear plus not so dark, while the fat is less than
the first grade tuna fish.
-
The 3rd grade is a
tuna with mixed variation of red and browner flesh that has no fat and opaque
appearance.
-
The 4th grade is a
tuna with lighter color and has gray or brown hue and soft plus opaque
appearance.
Information above hopefully can help you to
understand more about frozen tuna meat
or canned tuna product especially when you want to choose which one is better
than another one product.
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