| [consumption and nutritional contribution of the blue algae (oscillatoria platensis) among some populations of kanem (tchad)]. | two food surveys determined the areas of consumption and the ethnic groups involved as well as the way and motivations for using spirulina algae (oscillatoria platensis) in chad. more than 400 homes were visited in february (dry season) and october (end of the rainy season and period after the millet harvest). consumption is limited to a restricted proportion of the population in the kanem region. among the kanembu group (the leading consumers of spirulina), frequencies of use vary between one a ... | 1975 | 824994 |