Types of Blue Green Algae
Edible forms of blue green algae have been used by indigenous peoples since ancient times. Aphanizomenon flos-aquae (AFA) and Spirulina are prized for their high protein, vitamin and mineral content. Each has rich nutritional properties. Studies suggest they also boost immune response and support healing for many disease conditions.
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The History and Culture of Algae
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Blue green algae was used by the ancient Egyptians as colorful eye shadow. The largest and most complex marine forms of algae, seaweeds are an important source of food in many countries. Also called vegetable plankton, blue green algae grows throughout the world.
Properties of Blue Green Algae
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A simple organism, blue green algae lacks the distinct organs like leaves and roots of land plants, and has some characteristics of bacteria. They are a rich source of probiotics, useful to replace good bacteria lost through the use of antibiotics in humans. They are also prized for their chlorophyll content. The structure of chlorophyll is very similar to that of hemoglobin, making the nutrients in blue green algae easily assimilated by humans.
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The Healing Qualities of Blue Green Algae
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Blue green algae is a known immune-system stimulator. Helpful in treating allergies and fighting cancer, it protects cells from damage and may slow aging. In test tube studies, blue green algae showed promise as an anti-viral substance. Will it cure the common cold? That remains to be seen; research on human subjects is needed.
AFA Blue Green Algae is Naturally Grown
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AFA grows wild in cold freshwater lakes such as Lake Klamath in Oregon, where rich volcanic sediment feeds the simple algae. Historically an important part of Indigenous peoples' diet, AFA is available fresh-frozen. A tablespoon contains 64 nutrients, hence claims that AFA is a superfood.
Spirulina is Grown in Laboratories
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There are many types of spirulina, which also grows in freshwater lakes, but in warmer regions. Two popular ones are cultivated in Mexico and California in warm, slightly alkaline water. Like AFA, Spirulina is rich in amino acids, vitamins, minerals and essential fatty acids. The omega-3 fatty acids associated with fish originate in blue green algae and make their way up the food chain. Spirulina is sold dried, in flakes, powders and tablets.
Warnings
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Do not attempt to harvest unknown types of blue green algae for food, since not all species are edible. Similar to mushrooms, some algae release toxins that can cause death in animals and illness in humans. Phenylketonurics should not use blue green algae because it is rich in amino acids, including phenylanine. To avoid heavy metal contamination from polluted waters, purchase blue green algae from reputable sources.
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References
Resources
- Photo Credit photo by M. Earhart
