International Society for Tropical Root Crops

Proceedings of the
International Workshop on Cassava Safety
Ibadan, Nigeria
March 1-4, 1994

 

Last Updated:
14 June 2010

Published in Acta Horticulturae

(Number 375, November 1994)

Editors: M. Bokanga, A.J.A Essers, N. Poulter, H. Rosling and O. Tewe

Price/Availability

Requests:

Professor Andrew Westby
Natural Resources Institute
Fax: +44 1634 883714
e-mail: a.westby@gre.ac.uk

 Payment: *members US$15.0

*non-members US$45.0

 Payment should be made in US$ using a draft made out to ISTRC and sent to:

Dr Lynda Wickham
Secretary-Treasurer, ISTRC
Crop Science Unit
Department of Food Production
University of the West Indies
St. Augustine, Trinidad and Tobago
West Indies (e-mail: istrc@carib-link.net)

 

Contents
 Page
   
Preface-editorial board 7
   
Summary and recommendations of the workshop 11
   
List of participants 21
   
Alphabetical list of authors 25
   
 Opening session  
   
Welcome address

Lucas Brader

 

27

   
Opening remarks

Robert Asiedu

 

29

   
 Biology of cyanogenesis  
   
Cyanogenesis&emdash;a personal perspective

Eric E. Conn

 

31

   
Possible use of a biotechnological approach to optimize and regulate the content and distribution of cyanogenic glucosides in cassava to increase food safety

Birgit Maria Koch, Ole Sibbesen, Elizabeth Swain, Rachel Alice Kahn, Du Liangcheng, Soren Bak, Barbara Ann Halkier and Birger Lindberg Moller

 

 

45

   
Translocation of cyanogenesis in cassava

Dirk Selmar

 

61

   
Regulation of cyanogenesis in cassava

Wanda L. B. White, Jennifer M. McMahon and Richard T. Sayre

 

69

   
The function of cyanogenesis in cassava

Piet Kakes

 

79

   
 Analytical Methods  
   
Comparison of methods of analysis of cyanogens in cassava

J. Howard Bradbury, Meredith G. Bradbury and Sylvia V. Egan

 

87

   
Further improving the enzymic assay for cyanogens in cassava products

A. J. Alexander Essers

 

97

   
Quantitative solid-state detection of cyanogens: from field test kits to semi-automated laboratory systems allowing kinetic measurements

Leon Brimer

 

105

   
 Agronomic research  
   
Distribution of cyanogenic potential in the cassava germplasm

Mpoko Bokanga

 

117

   
Relationships between cyanogenic potential of cassava and other agronomic traits

Nzola Meso Mahungu

 

125

   
Genotype-environment interactions for cyanogenic potential in cassava

Mpoko Bokanga, Indira J. Ekanayake, A.G.O. Dixon and Marcio C.M. Porto

 

131

   
Cassava cyanogenic potential and resistance to pests and diseases

Anthony C. Bellotti and Lisbeth Riis

 

141

   
Breeding of cassava for low cyanogenic potential: problems, progress and prospects

Alfred G. O. Dixon, Robert Asiedu and Mpoko Bokanga

 

153

   
 Processing and cyanogen removal  
   
Eliminating cyanogens from cassava through processing: technology and tradition

Olusegun L. Oke

 

163

   
Cassava in Amazonia: lessons in utilization and safety from native peoples

Darna L. Dufour

 

175

   
Processing approaches to optimising raw materials and end product quality in the production of cassava flours

Gerard M.O’Brien, Deborah M.Jones, Christopher C. Wheatley, and Teresa Sanchez

 

183

   
Evaluation of the effect of various processing techniques on cyanogen content reduction in cassava

Bala Nambisan

 

193

   
Processing of cassava leaves for human consumption

Mpoko Bokanga

 

203

 
Cyanogen reduction during lactic fermentation of cassava

Andrew Westby and B.K. Choo

 

209

   
Making safe flour from bitter cassava by indigenous solid substrate fermentation

A. J. Alexander Essers

 

217

   
Processing of cassava roots in Brazil: safety implications

Marney Pascoli Cereda

 

225

   
Safety aspects of processing cassava to Gari in Nigeria

Morenike O. Sanni, Abiodun O. Sobaminwa, C. Modupe Eyinla and Hans Rosling

 

227

   
Reduction of cyanogen levels during sun-drying of cassava in Tanzania

Nicholas L. V. Mlingi and Zoe Bainbridge

 

233

   
 Cassava in livestock feeds  
   
Indices of cassava safety for livestock feeding

Olumide Tewe

 

241

   
Implications for domestic animals of cyanogenesis in sorghum forage and hay

John L. Wheeler

 

251

   
Cassava feeding in small holder livestock units

Eustace A. Iyayi and Olumide O. Tewe

 

261

   
 Human health and nutrition  
   
Measuring effects in humans of dietary cyanide exposure from cassava

Hans Rosling

 

271

   
Fatal and non-fatal acute poisoning attributed to cassava-based meal

Alade Akintonwa, O. Tunwashe and A. Onifade

 

285

   
Cassava cyanogenesis and iodine deficiency disorders

Francois Delange, Louis Ekpechi and Hans Rosling

 

289

   
The bioanthropological impact of chronic exposure to sublethal cyanogens from cassava in Africa

Fatimah L. Jackson

 

295

 
Chronic cyanide intoxication of dietary origin and a degenerative neuropathy in Nigerians

Benjamin O. Osuntokun

 

311

   
Konzo: a new human disease entity

W. P. Howlett

 

323

   
The association between cassava and the paralytic disease Konso

Thorkild Tylleskar

 

331

   
Human consumption of plant materials with neuro-toxic potential

Peter S. Spencer

 

341

   
Cassava intake and risk of diabetes in humans

Abayomi O. Akanji

 

349

   
 Socio-economic aspects  
   
Cassava safety and development

John Lynam

 

361

   
Cassava safety in times of war and drought in Mozambique

Julie L.Cliff

 

373

   
Links between cassava marketing, processing and dietary cyanide exposure in Zaire

Mayambu Banea and Hans Rosling

 

379

   
Methods for the dissemination of food processing technologies: the soybean example in Nigeria

Sidi M. Osho

 

385

   
Introducing improved cassava processing technologies in Southern Tanzania

Zoe Bainbridge, Karen Welling, Nigel H. Poulter and Nicholas L. V. Mlingi

 

393

   
Importance of cassava processing for production in Sub-Saharan Africa

Felix I. Nweke and Mpoko Bokanga

 

401

   
Cassava safety: implications for cassava biotechnology research

Ann Marie Thro

 

413


Adapted from material submitted February 2001 by Professor A Westby, ISTRC Councillor for Publications.