I read about this a few times, looked promising, however, it failed.
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Also, for the Chlorella to be as productive as the world would require, it would have to be grown in carbonated water, which would have added millions to the production cost. A sophisticated process, and additional cost, was required to harvest the crop, and, for Chlorella to be a viable food source, its cell walls would have to be pulverized. The plant could reach its nutritional potential only in highly modified artificial situations. Another problem was developing sufficiently palatable food products from Chlorella.[8]
Although the production of Chlorella looked promising and involved creative technology, it has not to date been cultivated on the scale some had predicted. It has not been sold on the scale of Spirulina, soybean products, or whole-grains. Costs have remained high, and Chlorella has for the most part been sold as a health food, for cosmetics, or as animal feed.[8] After a decade of experimentation, studies showed that, following exposure to sunlight, Chlorella captured just 2.5 percent[clarification needed]—not much better than conventional crops.[3] Chlorella, too, was found by scientists in the 1960s to be impossible for humans and other animals to digest in its natural state due to the tough cell walls encapsulating the nutrients, which presented further problems for its use in American food production.[3]
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