Cassava Research Paper

1742 Words7 Pages
Cassava (manihot esculents, creantz), variously designated as manioc, yucca or tapioca is a native to south America and southern and western Mexico, Presumable Eastern Brazil. It was one of the first crops to be domesticated and there is archeological evidence that it was grown in Peru 4, 000 years ago and in Mexico 2, 000 years ago. From stem cuttings, the plant produces 5 to 10 very fleshy adventitious roots up to 15 centimeters in diameter. Young roots may have 30 – 35% starches by weight but very little fat or protein.
Cassava is adapted to the zone within latitudes 30 north and south of the equator, at elevations of not more than 2000m above sea level, in temperatures ranging from 18 to 25Oc to rainfall of 50 to 5000mm annually and to
…show more content…
This made cassava the sixth major source of staple foods in the world amounting to 57 percent of the tropical root and tuber production in 1972. Cassava supplies 38.6 percent of the caloric requirements in Africa, 11.7 percent in Latin America and 6.7 percent in the Far East. Although cassava is of New World origin, 40 percent of the current world production takes place in Africa. According to FAO, Brazil accounts for 30 million tons ---- annually, Zaire 10.5 million, Indonesia 10.5 million, and Nigeria 7.5 million tons. Other major producing countries that make up the bulk of the world’s market supplies of cassava products a re Thailand, Madagascar and Benin. As many as 300 million people in the tropics consume cassava daily. Cassava is not only used in many food preparations for human consumption but it is important also in industries/starch, textiles, fuel, confectionery and in animal feed. Cassava products include Dextrins, Acetone, glues and pastes, cassava flour etc. Cassava is of two types Bitter and sweet cassava with many TMS varieties. Bitter cassava are bitter and poisonous if eaten raw. The bitter principle is a glycoside of hydrocyanic acid (HCN) which occurs in the white, yellow or red flesh. Very poisonous forms have greater than 100ppm of…show more content…
Osuntokun (21) reported the occurrence of tropical ataxic neuropathy (TAN) consisting of lesions of the skin, mucous membranes optic and auditory nerves, spinal coral and peripheral nerves. Patients exhibited myclopathy, bilateral glossitis and motor – neuron disease, parkinson’s disease, cerebellar degeneration psychosis and dementia were also found to be associated with the TAN disease.
It was concluded that, although he pathological conditions in Nigerian cases of tropical ataxic neuropathy are similar to those observed elsewhere, it is not justifiable to assume that these represent clinical variants of the same disease, since, when a diet is poor, multiple nutritional deficiencies usually occur together.
Experiments with laboratory animals confirmed that cassava in diet interfered with iodine up take by the thyroid.
Other conditions that may result from cassava dependency include kwashiorkor among children following weaning because of imbalance of protein relative to calorie

More about Cassava Research Paper

Open Document