This particular plankton appears
made to order to do the job touted for algae in converting CO2 into a viable
animal feedstock. Obviously it is early
days here but the nutrient spectrum and the possibility of producing a high
quality food product at a low cost makes it very appealing.
They are even toying with claims
as the final solution to feeding a huge population.
Whatever it develops into it
appears to be important.
'Hybrid' plankton could solve world's food problem, global warming
Food and supplements made of euglena powder and sold by Euglena Co. (Mainichi)
A type of microscopic plankton, which has features of both animals and
plants, as well as containing nearly all essential nutrients for human beings,
and absorbs carbon dioxide, may be the key to solving some of the world's most
toughest problems, scientists say.
The single-celled organism, known among scientists as
"euglena," is only 0.05 millimeters in length, but contains 59
different nutrients, including minerals, vitamins and nine types of amino acids
vital for human beings.
According to Mitsuru Izumo, 31, president of Euglena Co., a venture
company dedicated to euglena research and its development, one gram of the
plankton's powder -- made of some 1 billion euglena -- contains the same amount
of iron found in 50 grams of spinach and the same amount of folic acid found in
50 grams of saury. It also produces docosahexaenoic acid (DHA), an essential
component of the human brain, which is usually found in blueback fish.
Euglena's richness in nutrients, a lack of an acute taste and smell,
makes it a potential food component. In fact, Euglena Co., founded through a
collaboration between the University
of Tokyo and private
businesses, began producing and selling euglena-based food supplements in 2007.
However, contrary to the company's expectations, the products were not well
accepted, especially among women. With its name in Japanese meaning "green
bug," the image most people had of the organism was often associated with
larva, says Izumo.
Things changed for the company, however, in 2009 when it partnered with
the National Museum of Emerging Science and
Innovation (Miraikan) and produced euglena cookies, which quickly topped the
ranking of the museum's bestselling goods. Since then, the company has received
offers for the manufacturing of 25 processed foods, including hamburgers,
noodles and Japanese liquor.
Euglena Co. is currently manufacturing food supplements that may serve
as a panacea for malnutrition in developing countries.
"With the world's continuously increasing population, it is quite
probable that one day euglena may become the last food resource that is able to
sustain human beings," says Yoshihisa Nakano, professor emeritus at Osaka
Prefecture University, who has succeeded in breeding a mouse solely on euglena.
According to Nakano, euglena is a plant-animal "hybrid"
organism that accumulates nutrients through photosynthesis, while at the same
time moves like an animal by twisting itself. It can also absorb carbon dioxide
and effectively produce oxygen.
"If we place an euglena-cultivating tank on Mars, where carbon
dioxide and dry ice exist together, after 100 years we would have the same environment
as Earth because euglena can feed itself and produce oxygen. I often share this
dream with my students," says Nakano.
While this may indeed seem like a dream to many, euglena has in fact
already been used in aerospace research. The National Aeronautics and Space
Administration (NASA) began observing the plankton in the 1970s, as part of its
research on potential self-sufficiency in space. The Japan Aerospace
Exploration Agency (JAXA), in partnership with Osaka Prefecture
University , has already
confirmed that euglena can divide and multiply even in zero-gravity
environments.
In addition to being abundant in nutrients and being potentially useful
in space, scientists also see a bright future for euglena-led environmental
protection efforts. Since 2010, Sumitomo Joint Electric Power Co. has launched
a series of exhaust gas-filtration experiments at a thermal power station in Ehime Prefecture .
Contrary to other plants, which easily die due to the high carbon dioxide
concentration found in exhaust gas, euglena's growth was accelerated even
more than in regular atmospheric conditions, proving scientists' theories that
it effectively absorbs carbon dioxide.
"We will perform the same experiment in a larger tank and hope to
put our results into practice as soon as possible," a Sumitomo Joint
Electric Power Co. official commented.
If euglena is applied in the feeding of livestock and the production of
biofuel, it can create a new type of effective ecosystem, scientists say.
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