Abstract

For several decades considerable efforts have been made to promote the production and use of microalgae as direct food for man. However, the high costs of production and harvesting, and the potential rejection of algal food by consumers for toxicological reasons or concerns, have so far been major obstacles to a real breakthrough (Soeder, 1980). As a result, human consumption of microalgae is limited at present to expensive ‘health’ foods. Hope is rising, however, that in the near future inexpensive Spirulina grown on wastes will be successfully used in human nutrition (Fox, 1980; Olguin & Vigueras, 1981; Becker & Venkataraman, 1982).

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