Persistent konzo and cyanogen toxicity from cassava in northern Mozambique

Ernesto, Mario; Cardoso, A.Paula; Nicala, D; Mirione, Estevao; Massaza, Fernando; Cliff, Julie; Haque, M. Rezaul; Bradbury, J. H.

doi:10.1016/s0001-706x(02)00042-6

Cited by 137 publications

(126 citation statements)

References 14 publications

Supporting

Mentioning

110

Contrasting

Unclassified

Order By: Relevance

“…Harvesting second batch samples in June 2011 (the relatively dry period recorded just before harvesting) could explain the high cyanide contents. Our results are in agreement with those of [12,13,18] who showed the high cyanide contents when rainfall is low and low cyanide contents when rainfall is high.…”

Section: Comparison Of Total Cyanide Contents In Layers Of Cassava Rosupporting

confidence: 93%

Assessment of Cyanide Content in Cassava (Manihot esculenta Crantz) Varieties and Derived Products from Senegal

Guédé¹

2013

IJNFS

View full text Add to dashboard Cite

Abstract:We investigated cyanide levels in four cassava varieties and some derived products from Senegal. The study was conducted on fresh tubers by sampling in three longitudinal positions (1/4; 1/2; 3/4) and four radials (A, B, C and D). In addition, the sampling of derived products was carried out by product types (chip dried, graded, unpressed and pressed attieke, gari and flour). Cyanide contents were determined using differential pulse polarography. Results showed that whatever the variety considered, there was no significant difference between the total HCN content in cassava slices (1/4; 1/2; 3/4). Similarly, results from different layers (A, B, C and D) did not highlight the radial variability of the total HCN content. We showed a variable cyanide content (mg HCN/kg fresh material) in cassava varieties: 104.3 ± 3.9; 171.6 ± 5.4; 231.2 ± 10.2; 270.8 ± 12.0 for Kombo, Nigeria, Soya and Gniargui respectively. The detoxification processes (attieke, gari and flour) indicated a reduction rate in excess of 80% and may be effective to reduce the cyanide content in cassava root down to a tolerable level (< 50 mg/kg).

show abstract

Section: Comparison Of Total Cyanide Contents In Layers Of Cassava Rosupporting

confidence: 93%

Assessment of Cyanide Content in Cassava (Manihot esculenta Crantz) Varieties and Derived Products from Senegal

Guédé¹

2013

IJNFS

View full text Add to dashboard Cite

show abstract

“…Cassava toxicity has been linked to a low-protein diet (Padmaja 1996) because the sulfur-containing essential amino acids, cysteine, and methionine, are required to detoxify the cyanogens (Cardoso et al 2004). If the dietary intake of protein is insufficient, and particularly lacking in cysteine and methionine, not only does the prevalence of cyanide poisoning from cassava ingestion increase, but so does the incidence of protein deficiency diseases (Padmaja 1996) and a disease known as konzo, which causes permanent paralysis of the lower limbs (Ernesto et al 2002). Diets that are low in animal proteins, such as cassava (FAO 2004) and cereal grain-based diets, are often low in cysteine and methionine (FAO 2012c).…”

Section: Cassava's Futurementioning

confidence: 99%

Give peas a chance? Urban agriculture in developing countries. A review

Hamilton

Burry

Mok

et al. 2013

Agron. Sustain. Dev.

165

142

View full text Add to dashboard Cite

International audienceUrban agriculture is receiving increasing attention throughout the developing world, but debate rages as to whether it is a blessing or a curse. Some see it as savior for the poor, providing food, and livelihoods, yet to others it is responsible for harboring and vectoring pathogenic diseases and is an archaic practice that has no place along the path toward development. Consequently, the activity receives a mixed reception, and despite much support in many instances, it certainly does not enjoy universal unimpeded progress. Here, we undertake a global tour of urban agriculture throughout the developing world in an attempt to elucidate the various benefits, costs, and hindrances associated with the practice. Through this analysis we identify the need for better understanding of the following six aspects if urban agriculture is to make a meaningful contribution to food security and sustenance of livelihoods in the future: (1) the global and regional extent of urban agriculture; (2) the contribution of urban agriculture to communicable diseases, especially malaria but also diarrheal disease; (3) the role that urban agriculture does and/or could play in abating both malnutrition and obesity; (4) the impacts of urban agriculture on women; (5) appropriate methods of achieving governance and institutional support; and (6) the risks posed by chemical pollutants, particularly as Africa becomes increasingly industrialized. Overlaying these, we suggest that the time is ripe to extend the debate about urban agriculture’s positive and negative environmental impacts—especially in relation to carbon emissions—from primarily a developed world concern to the developing world, particularly since it is the developing world where population growth and consequent resource use is increasing most rapidly

show abstract

“…Several health disorders and diseases have been reported in cassava-eating populations, owing to the presence of improperly processed cyanide [18]. The consumption of lower cyanide amounts is not lethal but long-term intake could cause severe health problems such as tropical neuropathy [22]. The nitrate content in cassava leaves ranges from 43 to 310 mg/100 g DM (dry mater) [21].…”

Section: Nutritive and Anti-nutritive Properties Of Cassavamentioning

confidence: 99%

Introductory Chapter: Cassava as a Staple Food

Waisundara¹

2018

Cassava

View full text Add to dashboard Cite

Persistent konzo and cyanogen toxicity from cassava in northern Mozambique

Cited by 137 publications

References 14 publications

Assessment of Cyanide Content in Cassava (Manihot esculenta Crantz) Varieties and Derived Products from Senegal

Assessment of Cyanide Content in Cassava (Manihot esculenta Crantz) Varieties and Derived Products from Senegal

Give peas a chance? Urban agriculture in developing countries. A review

Introductory Chapter: Cassava as a Staple Food

Contact Info

Product

Resources

About