Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| characterization of sucrose uptake system in cassava (manihot esculenta crantz). | a leaf disc system was developed to study sucrose uptake in cassava (manihot esculenta crantz). the uptake of (u-(14)c) sucrose by cassava leaf discs followed michaelis-menten kinetics with a k(m) value for sucrose of 1.3 mm. it was found to be strongly inhibited by sulfhydryl reagents, n-ethylmaleimide, p-chloromercuribenzene sulfonate and iodoacetate. several metabolic inhibitors were also tested. among these, dinitrophenol, chlorocarbonyl cyanide phenylhydrazone, phloridzin and vanadate inhib ... | 2001 | 11448748 |
| physiopathological effects of the administration of chronic cyanide to growing goats--a model for ingestion of cyanogenic plants. | ingestion of cyanogenic plants, such as cassava and sorghum, has been associated with goitre and tropical pancreatic diabetes in both humans and animals. thus, the objective of the present study was to determine the toxic effects on the thyroid and pancreas in growing goats of prolonged exposure to potassium cyanide (kcn). thirty-four male goats were divided into five groups dosed with kcn at 0 (control). 0.3, 0.6, 1.2 or 3.0 mg/kg daily for 5 months. blood samples were obtained in order to dete ... | 2001 | 11469509 |
| screening of cassava and yam cultivars for resistance to anthracnose using toxic metabolites of colletotrichum species. | collectotrichum gloeosporioides f. sp. manihotis and c. gloeosporioides, causal agents of cassava (manihot spp.) and yam (dioscorea spp.) anthracnose diseases, respectively, produce toxic metabolites in culture that fluoresce at 254 nm and 366 nm, producing bands with rf of 0.65 and 7.0, respectively. symptoms induced on yam and cassava by the extracted metabolites were similar to those induced by the pathogens. twenty-four clones of tropical d. rotundata (tdr), d. alata (tda), d. esculenta (tde ... | 2001 | 11469761 |
| subcellular targeting of the coat protein of african cassava mosaic geminivirus. | the coat protein (cp) of geminiviruses is involved in a number of processes during the life cycle of the virus. the predominant function is encapsidation of single-stranded dna and formation of the virus particle to protect viral dna during transmission. the cp of monopartite geminiviruses is absolutely essential for virus movement, whereas cp mutants of bipartite geminiviruses are able to infect some host plants systemically, indicating an involvement of the cp in host specificity. during the l ... | 2001 | 11485405 |
| [social exchange and inference: an experimental study with the wason selection task]. | social contract theory (cosmides, 1989) posits that the human mind was equipped with inference faculty specialized for cheater detection. cosmides (1989) conducted a series of experiments employing the wason selection task to demonstrate that her social contract theory could account for the content effects reported in the literature. the purpose of this study was to investigate the possibility that the results were due to experimental artifacts. in the current experiment, the subject was given t ... | 2001 | 11494657 |
| [use of diet containing yeast protein (saccharomyces cerevisiae): effects upon pregnancy, lactation and development in rats]. | the nutritive value of manioc flour (manihot esculenta) enriched with yeast protein (saccharomyces cerevisiae) added to a food mixture most frequently consumed by low-income populations was assessed in female wistar rats (n = 30; 100-120 days old). animals were divided into three groups, mated and had free access to diets and water. diets were as follows: beans, rice, yeast-enriched manioc flour (brymf17); beans, rice, manioc flour (brmf13); casein (17% protein) (cas17). body weight gains and fo ... | 2001 | 11515236 |
| effect of different cultivation conditions on lactobacillus manihotivorans ond32t, an amylolytic lactobacillus isolated from sour starch cassava fermentation. | study of the cassava sour starch fermentation has led to the isolation of a new homofermentative amylolytic lactic acid bacterium, lactobacillus manihotivorans ond32t, whose nutritional requirements have been investigated in this work. the main effect of deleting one of the substrate components of the mrs-starch medium was to reduce the amylase production. when starch fermentation with nitrogen as a gas phase was compared to fermentation under aerobic conditions, both growth and amylase producti ... | 2001 | 11518431 |
| starch digestion rate in the small intestine of broiler chickens differs among feedstuffs. | dietary starch is the major energy source for broiler chickens, and knowledge about its digestive behavior can be important. in a digestibility trial with 720 broiler chickens, site, rate and extent of starch digestion were measured for 12 feedstuffs. starch digestion was determined using the slaughter technique, which involves removal of the small intestine from the recently killed chicken, with manual collection of the contents. starch digestion coefficients were calculated from remaining star ... | 2001 | 11533275 |
| unmanaged sexual reproduction and the dynamics of genetic diversity of a vegetatively propagated crop plant, cassava (manihot esculenta crantz), in a traditional farming system. | occurrence of intervarietal or interspecific natural crosses has been reported for many crop plants in traditional farming systems, underlining the potential importance of this source of genetic exchange for the dynamics of genetic diversity of crop plants. in this study, we use microsatellite loci to investigate the role of volunteer seedlings (plants originating from unmanaged sexual reproduction) in the dynamics of genetic diversity of cassava (manihot esculenta crantz), a vegetatively propag ... | 2001 | 11555234 |
| seroprevalences of vector-transmitted infections of small-holder dairy cattle in coastal kenya. | a cross-sectional study was carried out from july to september 1989 in kaloleni division, coast province, kenya to estimate the prevalence of vector-transmitted diseases in small-holder dairy cattle and to identify the risk factors associated with different management systems. one hundred and thirty of the 157 herds with dairy cattle in kaloleni division were surveyed. these were from three agro-ecological zones (coconut-cassava, cashew nut-cassava and livestock-millet), comprised two management ... | 2001 | 11566374 |
| a longitudinal study of disease incidence and case-fatality risks on small-holder dairy farms in coastal kenya. | a longitudinal study was carried out in the coastal lowlands coconut-cassava agro-ecological zone of kaloleni division, coast province, kenya between june 1990 and december 1991 to estimate disease incidence and cause-specific case-fatality risk in an average of 120 cattle in 26 small-holder dairy herds kept in two grazing-management systems. east coast fever (ecf) was the predominant disease diagnosed; the mean monthly incidence rate was 2.5 and 6.9% in animals < or = 18 months of age under sta ... | 2001 | 11566375 |
| identification of a target population for immunisation against east coast fever in coastal kenya. | two experiments were carried out to identify the target population of cattle for immunisation against east coast fever (ecf) using the infection-and-treatment method. firstly, a sentinel-calf study was used to determine the age window for ecf immunisation by determining ages at clinical detection of infection with theileria parva. six groups of five naive cross-bred (bos taurus/bos indicus) male calves, introduced at intervals of 2 months at a mean age of 26 days, were exposed to natural tick ch ... | 2001 | 11566376 |
| [discovery of phytopathogenic bacteria 100 years ago: transatlantic controversies and polemics]. | the demonstration of a bacterial cause of some plant diseases has been claimed few years after it was commonly recognized that bacteria were able to cause diseases of human and animal. nevertheless, some sharp controversies took place, between german and american specialists (1897-1901), before the existence of bacterial diseases of plants was accepted by all phytopathologists. nowadays, about 350 bacteria are described, which infect plants: they are pathovars, or subspecies, belonging to 21 gen ... | 2001 | 11570278 |
| enrichment of eggs with n-3 polyunsaturated fatty acids: effects of vitamin e supplementation. | eggs enriched with n-3 polyunsaturated fatty acids (pufa) could contribute to dietary intake of these healthful fatty acids (fa). because n-3 pufa are highly susceptible to peroxidation, a first part of the study with leghorn laying hens was carried out to investigate the influence of different levels of fish oil (0, 0.7, 1.4, 2.8, or 5.6%, respectively) in the diet on n-3 pufa, cholesterol, vitamin e, and lipid peroxidation product contents in eggs. addition of fish oil to a complete diet based ... | 2001 | 11592735 |
| carbon from cassava peel, an agricultural waste, as an adsorbent in the removal of dyes and metal ions from aqueous solution. | cassava (manihot esculenta) is a short lived erect perennial shrub, planted vegetatively from hard wood stem cuttings. it is an important crop across a wide range of tropical environments and is a significant component of cropping systems. cassava peel is an agricultural waste from the food processing industry. activated carbons prepared from waste cassava peel employing physical and chemical methods were tested for their efficiency in the removal of dyes and metal ions from aqueous solution. wh ... | 2001 | 11601548 |
| comparison of culture media, simplate, and petrifilm for enumeration of yeasts and molds in food. | the efficacy of three culture media, dichloran rose bengal chloramphenicol (drbc), dichloran 18% glycerol agar (dg18), and potato dextrose agar (pda) supplemented with two antibiotics, were compared with the simplate and petrifilm techniques for mold and yeast enumeration. the following foods were analyzed: corn meal, wheat flour, cassava flour, bread crumbs, whole meal, sliced bread, ground peanuts, mozzarella cheese, grated parmesan cheese, cheese rolls, orange juice, pineapple pulp, pineapple ... | 2001 | 11601710 |
| the influenza pandemic of 1918-19 and the spread of cassava cultivation on the lower niger: a study in historical linkages. | 1981 | 11632223 | |
| molecular evidence for diverse populations of cassava-infecting begomoviruses in southern africa. | in this paper we describe results obtained from screening field populations of begomoviruses from infected cassava from six countries in southern africa. it was found that african cassava mosaic virus occurs in five of the six countries (except angola), east african cassava mosaic virus is present in five countries (except zambia) and south african cassava mosaic virus was detected only in south africa and swaziland. in addition, we report for the first time in southern africa, the appearance of ... | 2001 | 11699964 |
| tropical plant pathology: at home and abroad. | i first describe my introduction to plant pathology and early experiences with employment, the environment, diseases, pests, and various plant pathologists. then i recount a decade of stimulating studies at the university of minnesota and the route i followed to a career in international agriculture with the rockefeller foundation in colombia and later at cornell university. my appreciation for and knowledge of traditional farmers and sustainable agriculture occurred as a slow awakening. comment ... | 2001 | 11701856 |
| water quality of a reservoir as affected by agriculture in the east of thailand: a preliminary study. | a preliminary study on the water quality of a reservoir, affected by agriculture, in the east of thailand was conducted during 1996-1997. monitoring water quality of a reservoir is important because the sloping lands surrounding the reservoirs are mainly utilized for cultivating cash crops (pineapple, cassava, etc). a lot of fertilizers and agrochemicals were applied to soil and crops which can polluted the water. the results from the preliminary studied will be applied for the monitoring of the ... | 2001 | 11724479 |
| structure determinants of substrate specificity of hydroxynitrile lyase from manihot esculenta. | tryptophan 128 of hydroxynitrile lyase of manihot esculenta (mehnl) covers a significant part of a hydrophobic channel that gives access to the active site of the enzyme. this residue was therefore substituted in the mutant mehnl-w128a by alanine to study its importance for the substrate specificity of the enzyme. wild-type mehnl and mehnl-w128a showed comparable activity on the natural substrate acetone cyanohydrin (53 and 40 u/mg, respectively). however, the specific activities of mehnl-w128a ... | 2002 | 11742123 |
| differential esterase expression in leaves of manihot esculenta crantz infected with xanthomonas axonopodis pv. manihotis. | the polyacrylamide gel electrophoresis system (page) and inhibition tests for biochemical characterization of alpha- and beta-esterases were used to obtain a functional classification of esterases in plants and to show a differential expression of esterases as markers of pathogenesis in cassava plants (manihot esculenta crantz). the characterization of alpha- and beta-esterases from leaves of m. esculenta by the page system was possible using an extraction solution containing two phenol-complexi ... | 2001 | 11758725 |
| upflow anaerobic sludge blanket treatment of starch wastewater containing cyanide. | treatment of tapioca starch wastewater containing cyanide using an upflow anaerobic sludge blanket (uasb) process was investigated. sludge from an anaerobic lagoon treating tapioca starch wastewater was used as seed. performance of the uasb reactor with influent cyanide concentrations up to 25 mg/l was assessed. the inhibitory effects of cyanide were temporary and reversible. the process required longer recovery period for higher cyanide dosage. for 25 mg/l of cyanide concentration in the feed, ... | 2006 | 11765999 |
| effects of a nonforage diet on milk production, energy, and nitrogen metabolism in dairy goats throughout lactation. | the objective of the experiment was to compare a silage-based control diet (c) with a nonforage diet (nf) in dairy goats throughout lactation in terms of animal performance and energy utilization. eight saanen goats were divided into two groups and fed c or nf, a commercial blend that included sunflower meal, cassava, coconut meal, and whole cottonseeds as the main ingredients that was characterized by a small particle size and a high crude protein content. in early, mid, and late lactation (44, ... | 2001 | 11768086 |
| phytate from an alternative dietary supplement has no effect on the calcium, iron and zinc status in undernourished rats. | a mixture of cereal bran, eggshells and cassava leaf powder, known as multimixture (mm), has been widely used in developing countries as a dietary supplement to combat malnutrition in children. the introduction of phytate from cereal bran in infant diets has generated serious controversy about mm due to the mineral chelating effect of phytate. this paper reports on a study to investigate the bioavailability of calcium, iron and zinc in rats fed with a deficient diet supplemented with mm. underno ... | 2001 | 11791478 |
| properties and applications of starch-converting enzymes of the alpha-amylase family. | starch is a major storage product of many economically important crops such as wheat, rice, maize, tapioca, and potato. a large-scale starch processing industry has emerged in the last century. in the past decades, we have seen a shift from the acid hydrolysis of starch to the use of starch-converting enzymes in the production of maltodextrin, modified starches, or glucose and fructose syrups. currently, these enzymes comprise about 30% of the world's enzyme production. besides the use in starch ... | 2002 | 11796168 |
| new efficient amylase-producing strains of lactobacillus plantarum and l. fermentum isolated from different nigerian traditional fermented foods. | amylolytic lactic acid bacteria (alab) were isolated from nigerian traditional fermented foods (fufu, burukutu, ogi-baba and kunu-zakki) with the aim of selecting efficient amylase-producing strains. nine isolates were characterized on the basis of their phenotypic and taxo-molecular characteristics. three groups could be distinguished by their fermentation profiles and this was confirmed by dna restriction analysis. though fermentation profiles gave good identification of strain k9 (unique repr ... | 2002 | 11843413 |
| [is manioc a diabetogenic factor? apropos of a case of diabetes mellitus with a large consumption of crude manioc]. | the case of a 24 year-old comorian male patient consuming large amounts of cooked and uncooked cassava and suffering of malnutrition since his boyhood is reported. the patient presented a diabetes mellitus by chronic calcific pancreatitis with retinopathy and neuropathy. the protein deficiency associated with eating uncooked cassava may be recognised as a factor of calcific pancreatitis diabetes. other factors might be associated such as the environment as well as immunological and genetic chara ... | 2001 | 11845523 |
| exopolysaccharide production from sclerotium glucanicum nrrl 3006 and botryosphaeria rhodina dabac-p82 on raw and hydrolysed starchy materials. | evaluation of fermentative usage of raw starchy materials for exopolysaccharide (eps) production by sclerotium glucanicum nrrl 3006 and botryosphaeria rhodina dabac-p82. | 2002 | 11849493 |
| [an epidemiological study on the risk factors of irritable bowel syndrome in zhanjiang, guangdong province]. | to assess the risk factors in the pathogenicity of irritable bouel syndrome(ibs) in zhanjiang city. | 2001 | 11851063 |
| characterisation of sri lankan cassava mosaic virus and indian cassava mosaic virus: evidence for acquisition of a dna b component by a monopartite begomovirus. | two bipartite begomoviruses, indian cassava mosaic virus (icmv) and sri lankan cassava mosaic virus (slcmv), have been isolated from mosaic-diseased cassava originating from central india and sri lanka, respectively. icmv was transmitted with low efficiency from cassava to nicotiana benthamiana by sap inoculation to give leaf curl symptoms. slcmv was much more virulent in this host, producing severe stunting, leaf curl, and chlorosis. these symptoms were reproduced when their cloned genomic comp ... | 2002 | 11853400 |
| progress in breeding for trace minerals in staple crops. | staples are not considered an important source of minerals in the diet. however, because of high staple consumption, any increase in mineral concentration might well have a significant effect on human nutrition and health. the nutritional quality of staple crops (rice, cassava, wheat, maize and beans) can be improved by breeding. studies have shown the potential to exploit the genetic variation in seed concentration of iron and other minerals without the general negative effect on yield of addin ... | 2002 | 11880579 |
| effect of food plants on the volume of repellent secretion obtained in adult zonocerus variegatus (orthoptera: pyrgomorphidae). | the volume of secretion obtained from adult zonocerus variegatus (orthoptera: pyrgomorphidae) was influenced by the type of food plants. insects fed on leaves of cassava manihot esculenta, bitter leaves vernonia amygdalina, and a mixture of m. esculenta and acalypha wilkesiana gave a good volume of secretion while chromolaena odorata, elaeis guinensis, aspilia africana and citrus sinensis did not favour secretion production. no significant difference was recorded in the volume of secretion obtai ... | 2001 | 11935920 |
| mutation of three cysteine residues in tomato yellow leaf curl virus-china c2 protein causes dysfunction in pathogenesis and posttranscriptional gene-silencing suppression. | the nuclear localized c2 protein of the monopartite begomovirus tomato yellow leaf curl virus-china (tylcv-c) contributes to viral pathogenicity. here, we have investigated tylcv-c c2 protein domains that play a role in the phenotype. alignment of the c2 protein with 67 homologues from monopartite and bipartite begomoviruses revealed that a putative zinc-finger motif c36-x1-c38-x7-c46-x6-h53-x4-h58c59 and four potential phosphorylation sites (t52, s61, y68, and s74) are highly conserved. when ex ... | 2002 | 11952122 |
| cassava starch maltodextrinization/monomerization through thermopressurized aqueous phosphoric acid hydrolysis. | kinetic conditions were established for the depolymerization of cassava starch for the production of maltodextrins and glucose syrups. thin-layer chromatography and high-performance liquid chromatography analyses corroborated that the proper h3po4 strength and thermopressurization range (e.g., 142-170 degrees c; 2.8-6.8 atm) can be successfully explored for such hydrolytic purposes of native starch granules. because phosphoric acid can be advantageously maintained in the hydrolysate and generate ... | 2001 | 11963875 |
| solid-state fermentation of phytase from cassava dregs. | phytases produced by numerous microorganisms and plants degrade phytic acid that has chelated with metal ions in food and feed. it is important to study phytase for the role of metal ions in nutrition of animals and humans as well as in the reduction of organic phosphate content of aqueous environment. this article reports on solid-state fermentation of phytase from a new substrate of cassava dregs. large quantities of cassava dregs are produced in tropical areas as a byproduct of cassava starch ... | 2001 | 11963905 |
| replacement of maize with cassava sievates in cockerel starter diets: effect on performance and carcass characteristics. | 2002 | 11969113 | |
| effects of different fibre sources and fat addition on cholesterol and cholesterol-related lipids in blood serum, bile and body tissues of growing pigs. | knowledge is limited on the efficacy of hindgut-fermentable dietary fibre to reduce blood, bile and body tissue cholesterol levels. in three experiments with growing pigs the effects of different kinds and levels of bacterially fermentable fibre (bfs) on cholesterol metabolism were examined. various diets calculated to have similar contents of metabolizable energy were supplied for complete fattening periods. in the first experiment, a stepwise increase from 12 to 20% bfs was performed by supple ... | 2002 | 11972674 |
| population history of manihot esculenta (euphorbiaceae) inferred from nuclear dna sequences. | the nature of gene flow in plants -- including the propensity for interspecific introgression -- makes them interesting candidates for phylogeographical analysis. plant phylogeography studies have been limited, however, by the availability of suitable intraspecific variation. in this study, dna sequence variation from a nuclear gene [glyceraldehyde 3-phosphate dehydrogenase; (g3pdh)] was used to examine the population history of manihot esculenta ssp. flabellifolia and a potentially hybridizing ... | 2002 | 11975706 |
| food safety and amino acid balance in processed cassava "cossettes". | processed cassava (manihot esculenta crantz) roots provide more than 60% of the daily energy intake for the population of the democratic republic of congo. insufficiently processed cassava roots in a diet deficient in sulfur amino acid have been reported to cause the irreversible paralytic disease konzo, afflicting thousands of women and children in the remote rural areas of bandundu province. "cossettes" (processed cassava roots) purchased in several markets of kinshasa were analyzed for their ... | 2002 | 11982439 |
| cassava diet--a cause for mucopolysaccharidosis? | studies were carried out to determine the changes in glycosaminnoglycan (gag) metabolism in rats fed cassava with varying cyanoglucoside levels and two levels of protein. results indicated that there was an enhancement in the level of total and individual gag with a corresponding reduction in the activity of enzymes involved in the degradation of glycosaminoglycan. these changes were significant for rats given a cassava diet (raw and boiled cassava) and low protein. the changes in total and indi ... | 2002 | 12049146 |
| a distinct bemisia tabaci (gennadius) (hemiptera: sternorrhyncha: aleyrodidae) genotype cluster is associated with the epidemic of severe cassava mosaic virus disease in uganda. | during the 1990s, an epidemic of cassava mosaic virus disease caused major losses to cassava production in uganda. two factors associated with the epidemic were the occurrence of a novel recombinant begomovirus, eacmv-ug, and unusually high populations of the whitefly vector, bemisia tabaci. here we present molecular evidence for the occurrence of two cassava-colonizing b. tabaci genotype clusters, ug1 and ug2, one of which, ug2, can be consistently associated with the cmd epidemic in uganda at ... | 2002 | 12074729 |
| co-adaptation between cassava mosaic geminiviruses and their local vector populations. | four cassava mosaic geminivirus (cmg) isolates; african cassava mosaic virus from namulonge, uganda (acmv-[nam]), east african cassava mosaic virus from mtwara, tanzania (eacmv-[mtw]), eacmv-uganda from namulonge (eacmv-ug[nam]) and indian cassava mosaic virus from trivandrum, india (icmv-[tri]) were compared for their ability to be transmitted by four colonies of cassava whitefly, bemisia tabaci (gennadius), collected from namulonge (nam), mtwara (mtw), kumasi (kum) and trivandrum (tri). with 2 ... | 2002 | 12076831 |
| bacterial population of a two-phase anaerobic digestion process treating effluent of cassava starch factory. | different groups of microorganisms in a two-phase anaerobic system were enumerated to evaluate the prevalence of specific groups and species. total and fecal coliforms showed similar values both in acidogenic and methanogenic reactors. the fecal streptococci were 4-fold higher in the acidogenic reactor, when compared with those of the methanogenic reactor. as expected, no methane forming or sulfate reducing bacteria were found in the acidogenic reactor. the populations of methanogenic bacteria w ... | 2002 | 12088382 |
| wild manihot species do not possess c4 photosynthesis. | cultivated cassava (manihot esculenta) has a higher rate of photosynthesis than is usual for c3 plants and photosynthesis is not light saturated. for these reasons it has been suggested that cultivated cassava could be derived from wild species possessing c4 photosynthesis. the natural abundance of 13c and activities of phosphoenolpyruvate carboxylase and phosphoglycolate phosphatase were measured in leaves of 20 wild cassava species to test this hypothesis. all the species studied, including m. ... | 2002 | 12096814 |
| energy metabolism of cocks and broiler chickens fed on diets with different carbohydrate sources. | energy balances of cocks and chickens were measured using the nitrogen-carbon-balance method. in experiment 1 twelve adult white leghorn cocks were fed alternately on a basal ration or on a supplemental ration composed of 75% basal diet and 25% carbohydrate source as a supplement. in experiment 2 six groups of 12 male broiler chickens were fed successively on two diets each with different carbohydrate sources (40% of dm) and on two energy levels. the investigated carbohydrate sources were glucos ... | 2001 | 12098835 |
| effect of medium salt concentration on differentiation and maturation of somatic embryos of cassava (manihot esculenta crantz). | culture of cassava somatic embryos on media with an altered macro- and micro-nutrient salt concentration affected embryo development and germination capability. in the tests, quarter-, half-, full- or double-strength murashige and skoog (ms) media were compared. the maximum number of somatic embryos differentiated from a proliferative nodular embryogenic callus (nec) on either half- or full-strength ms medium, and the greatest numbers of cotyledonary stage embryos were formed on full-strength ms ... | 2002 | 12099540 |
| daily ingestion of 232th, 238u, 226ra, 228ra and 210pb in vegetables by inhabitants of rio de janeiro city. | the concentrations of the naturally occurring radionuclides 232th, 238u, 210pb, 226ra and 238ra were determined in the vegetables (leafy vegetables, fruit, root, bean and rice) and derived products (sugar, coffee, manioc flour, wheat flour, corn flour and pasta) consumed most by the adult inhabitants of rio de janeiro city. a total of 88 samples from 26 different vegetables and derived products were analyzed. the highest contribution to radionuclide intake arises from bean, wheat flour, manioc f ... | 2002 | 12141609 |
| neuropathologic study of long term cyanide administration to goats. | cyanogenic glycosides, which release cyanide, are present in several plant species of high importance for animal production, such as cassava and sorghum. several human neurological diseases have been associated with chronic cyanide exposure. on the other hand, these effects in ruminants are almost unknown. thus, the objective of the present study was to determine the long-term lesions of the central nervous system (cns) caused by daily administration of potassium cyanide (kcn) to goats. thirty-f ... | 2002 | 12176095 |
| linamarase expression in cassava cultivars with roots of low- and high-cyanide content. | this paper reports the expression and localization of linamarase in roots of two cassava (manihot esculenta crantz) cultivars of low and high cyanide. two different patterns of linamarase activity were observed. in the low-cyanide type, young leaves displayed very high enzyme activity during the early plant growing stage (3 months), whereas in root peel, the activity increased progressively to reach a peak in 11-month-old plants. conversely, in the high-cyanide cultivar (hcv), root peel linamara ... | 2002 | 12177481 |
| asean. | asean is a group of counties encompassing 3 million sq. km with 333 million inhabitants, of whom approximately 65% are literate. the group was formed august 8, 1967, and includes brunei, indonesia, malaysia, the philippines, singapore, and thailand. malay, indonesian, filipino, thai, chinese, and english are spoken by malay, thai, chinese, indian, and other ethnic groups who variously are of the islamic, buddhist, christian, taoist, and hindu faiths. life expectancy is approximately 85 years, wi ... | 1992 | 12178041 |
| in vitro, greenhouse and field assessments of cassava lines for resistance to anthracnose disease caused by colletotrichum gloeosporioides f.sp. manihotis. | fifty-three cassava lines were selected from breeding populations at the international institute of tropical agriculture (iita), ibadan, nigeria and screened in vitro for resistance to cassava anthracnose disease (cad). the in vitro inoculation of stem cuttings with the fungus colletotrichum gloeosporioides f.sp. manihotis showed significant differences (p +/- 0.05) in acervuli production and in the sensitivity of the cassava lines to the fungal infection after 7 days of incubation at 25 degrees ... | 2002 | 12206320 |
| [brazil: agricultural modernisation and food production restructuring in the international crisis]. | this study examines the complex relationship of capital accumulation, external debt, and food supply in brazil, a country which has simultaneously increased its food exports and its unsatisfied demand for food imports in the context of the world economic crisis. in brazil, the substitution of export cash crops for subsistence crops has been accompanied by a profound but incomplete restructuring of the basic food supply and model of consumption, a restructuring made possible by declining real co ... | 1985 | 12267623 |
| [how to increase food production?]. | pressure of population on cultivable land, serious soil erosion, and low productivity due to scarcity of inputs have hampered efforts to provide an adequate diet for the population of rwanda. until the present, production has increased about as rapidly as population, but rwanda is not totally self-sufficient in food, future climatic conditions may be less favorable than those of the past, technical and resource constraints are likely to increase, and little new land will be available for cultiva ... | 1984 | 12267714 |
| [government policies and actions in burundi in the area of rural development]. | this article discusses policies and actions designed by the government of burundi to assure food self-sufficiency and to improve living conditions in rural areas. burundi has had a long history of food self-sufficiency due to good soils, adequate rainfall, and hard work by the rural population. in the past 3 decades, however, the food supply has been threatened by various factors including soil erosion and rapid population increase. the government has undertaken a reforestation program which cov ... | 2014 | 12268240 |
| dying for water. | in danchira village in ghana for the last 5 years, women and children rise before dawn every day to fetch water from a tributary or the river densu, which is 5 miles from the village. diminished rainfall has dried the village's 3 ponds and bore-hole where the women and children used to fetch water. to exacerbate the water problem, the ghana water and sewerage corporation no longer comes to fill the huge water tank it brought to danchira when water scarcity first occurred. the villagers could ... | 1993 | 12287019 |
| [local food mixtures for the treatment of protein-calorie malnutrition in the mondongo, zaire rural health center]. | protein-calorie malnutrition is found in environments characterized by ignorance, illiteracy, poverty, poor hygiene, and absence of food processing industries. at the mondongo rural health center in zaire, malnourished children are not rare, although they live in an environment rich in the foods necessary for growth and development. parents are poorly informed about the desirable age at weaning, the nutritional requirements of weaned infants, and appropriate diet and food preparation for weane ... | 1993 | 12287305 |
| population and food problems in indonesia. | this discussion examines the relationship between population growth and food problems in indonesia and their connection with the total food production requirement particularly of staples or basic foods in the country. in 1976 indonesia's population numbered about 130 million. the uneven distribution of population by regions is 1 of the outstanding features of indonesia's demographic situation. the estimates of mortality levels for the period 1961-1971 mostly refer to life expectancies at birt ... | 1979 | 12312142 |
| what is a population? spouse import in the northwest amazon. | in northwest amazon societies, diverse groups marry across linguistic and geographic barriers: kinship and kin proximity occur according to cultural rules, and kinship, language, and residence may not be equated with genetic relatedness, as previously postulated. the assumption of genetic relatedness and random mating within a prescribed geographic zone or linguistic unit does not always hold true. models should be based on cultural determinants of population dynamics that are more sensitive to ... | 1994 | 12319063 |
| notes on nambiquara demography. | total population, fertility, and differential mortality are described for the nambiquara of western mato grosso, brazil. the nambiquara are hunters and subsistence farmers of maize and manioc. communities are scattered clusters of 30 individuals, led by political "brothers." dravidian kinship and cross-cousin marriages predominate in exogamous marriages. western contact occurred after 1910 with the arrival of the telegraph line. missionary contact was during the 1920s, and claude levi-strauss vi ... | 1994 | 12319068 |
| aids and agricultural production. report of a land utilization survey, masaka and rakai districts of uganda. | increased aids mortality and other preexisting conditions have contributed to agricultural productivity declines in the districts of masaka and rakai in uganda. these two districts were the most fertile in uganda and also had the highest hiv seroprevalence rates in africa. 66% of study households experienced land use decline to some extent over the past 5 years. the 11% decline in poultry production and 32% decline in cattle production was reportedly due to poor management and loss of grazing la ... | 1993 | 12319218 |
| the relevant population dynamics to land degradation in the northeast region. | this paper reviews the possible linkage between population factors such as population size/growth, in-migration/out-migration, and age/sex structures and land degradation in northeastern thailand. using both qualitative and quantitative methods, the feasible relationship between population factors and land degradation are analyzed. in addition, a review of the existing reforestation and population policy of the thai government is presented. analysis within sample units demonstrated a significa ... | 2000 | 12322566 |
| [children and traditional practices]. | african traditional practices can be both beneficial and harmful to the newly born. this article describes these practices from 4 perspectives: 1) the period following childbirth or "maternage;" 2) nutrition; 3) curative care; and 4) social customs. the beneficial practices include: 1) giving the baby water as soon as he is washed to prevent neonatal hypoglycemia; 2) breast feeding; 3) carrying the baby on the mother's back and 4) the traditional massage. the harmful practices during maternag ... | 1990 | 12342828 |
| green leaves are the stuff of life. | children, pregnant women, nursing mothers, and the elderly need to eat dark green leafy vegetables. these vegetables provide vitamin a which prevents night blindness and increases resistance to illness. the vitamin is also transferred to babies in breast milk; so mothers, in particular, need to consume these vegetables. vitamin a is also contained in squash, sweet potatoes, carrots, mangoes, milk, eggs, and liver. iron, which prevents tiredness and weakness, is found in meat, peas, beans, spinac ... | 2013 | 12345402 |
| tropical calcific pancreatitis: strong association with spink1 trypsin inhibitor mutations. | tropical calcific pancreatitis (tcp) is a chronic pancreatitis unique to developing countries in tropical regions. the cause of tcp is obscure. whereas environmental factors, such as protein energy malnutrition and ingestion of cassava, have been implicated, a genetic predisposition to the disease also may be important. in the present study we report on mutations in the serine protease inhibitor, kazal type 1 (spink1) gene in north indian patients with tcp. | 2002 | 12360463 |
| development and sensory acceptability of crackers made from the big-eye fish (brachydeuterus auritus). | the big-eye (brachydeuterus auritus), which is present in a large biomass in the gulf of guinea, is generally considered an underutilized fish species. in an attempt to add value, it was used to complement cassava starch (manihot esculenta crantz) to produce fish crackers. three levels of fish (40%, 50%, and 60%) and three levels of starch (60%, 50%, and 40%) were used in the formulations. proximate analyses and sensory evaluations were carried out. the protein, fat, and ash contents increased w ... | 2002 | 12362597 |
| cytogenetics of manihot esculenta crantz (cassava) and eight related species. | thirty-nine cultivars of cassava and eight related wild species of manihot were analyzed in this work for number, morphology and size of chromosomes, prophase condensation pattern and the structure of the interphase nucleus. in four accessions, the chromosome size was measured and in some others, the number of secondary constrictions, meiotic behavior, c-band pattern, cma/dapi bands, nucleoli number and the location of 5s and 18s-5.8s-28s rdna sites were also observed. all investigated accession ... | 2002 | 12369103 |
| [sorption of mono- and sesquiterpenes by natural polysaccharides]. | sorption of terpenoids (essential oil components) from aqueous solutions by six types of native food starches was studied by capillary gas chromatography. sorption of volatile substances did not depend on amylose content in starch and specific surface of its granules. the degree of sorption was maximum (86%) for corn starch containing 25-28% amylose and decreased in the following order: tapioca starch (77%) > potato starch (74%) > wheat starch (70%) > high-amylose corn starch (58%) > amylopectin ... | 2006 | 12391760 |
| optimisation of batch culture conditions for cyclodextrin glucanotransferase production from bacillus circulans df 9r. | background: the extracellular enzyme cyclodextrin glucanotransferase (cgtase) synthesizes cyclic malto-oligosaccharides called cyclodextrins (cds) from starch and related alpha-1,4-glucans. cgtases are produced by a variety of bacteria, mainly bacillus species, by submerged culture in complex medium. cgtases differ in the amount and types of cds produced. in addition, cgtase production is highly dependent on the strain, medium composition and culture conditions. therefore we undertook this study ... | 2002 | 12392599 |
| gibberellic acid production by solid-state fermentation in coffee husk. | five strains of gibberella fujikuroi and one of fusarium moniliforme were screened for the production of gibberellic acid (ga3) in coffee husk, and based on the results, one strain, g. fujikuroi lpb-06, was selected. the comparative production of ga3 by solid-state fermentation and submerged fermentation indicated better productivity with the former technique, mainly with pretreated substrate. the ga3 accumulation was 6.1 times higher in the case of solid-state fermentation. considering the c:n ... | 2002 | 12396121 |
| ion chromatography of phytate in roots and tubers. | the ion chromatographic method for the quantification of phytate (insp(6)) in foods was adapted for the analysis of roots and tubers. to maximize sensitivity, ultraviolet (uv) detection following postcolumn derivatization was compared with evaporative light-scattering detection (elsd). detection limits for phytate were 0.5 and 1 microg for uv and elsd, respectively. unidentified peaks eluting close to and after insp(6) were removed by solid-phase extraction. phytate was detected in 11 of 15 root ... | 2003 | 12517094 |
| adaptation to the digestion of nutrients of a starch diet or a non-starch polysaccharide diet in group-housed pregnant sows. | a trial was conducted with twenty group-housed pregnant sows to study the adaptation in nutrient digestibility to a starch-rich diet or a diet with a high level of fermentable non-starch polysaccharides (nsp) during a time period of 6 weeks. the starch-rich diet was primarily composed of wheat, peas and tapioca, whereas soya bean hulls and sugar beet pulp, which both are highly fermentable nsp sources, were used to formulate the nsp-rich diet. the starch-rich diet and the nsp-rich diet were form ... | 2002 | 12534834 |
| [study on factors influencing agrobacterium-mediated cassava transformation]. | factors influencing agrobacterium-mediated cassava transformation were investigated. among the four agrobacterium strains tested, lba 4404 (ptok 233) and lba 4404 (pbin9gusint) gave higher transient expression than c 58 c1 (pig121hm) and eha 105 (pbin9husint). pretreatment of explants by bombardment or vaccum had no significant effect on transient expression while preinduction of agrobacterium with acetosyringone showed better effects, and preculture of explants showed worse effects. all the cul ... | 1999 | 12548867 |
| [continuous ethanol fermentation using tapioca starch by immobilized yeast cell without carrier]. | a widespread interest has been noted in continuous power ethanol fermentation utilizing systems with immobilized yeast cell through self-flocculating. we studied continuous ethanol fermentation by a naturally flocculent strain of schizosaccharomyces pombe and the performance of two-stage continuous ethanol fermentation system using suspended-bioreactors(total effective volume 1.5 l) has been established: the high biomass levels achieved allow efficient ethanol conversion(72.7 g/l, average), resi ... | 2000 | 12548945 |
| identification, isolation and quantification of representative bacteria from fermented cassava dough using an integrated approach of culture-dependent and culture-independent methods. | the use of denaturing gradient gel electrophoresis (dgge) and traditional culture-depending methods for examining the bacterial community of traditional cassava starch fermentation were investigated. it appeared that dgge profiles of total dna of cassava dough exhibited 10 distinguishable bands. in contrast, dgge fingerprints of bacteria recovered from enrichment cultures of fermented dough gave variable profiles containing fewer bands. bands corresponding to five bacterial species detected by d ... | 2003 | 12568751 |
| genetic mapping of a dominant gene conferring resistance to cassava mosaic disease. | cassava mosaic disease (cmd) is the most-important disease of cassava ( manihot esculenta) in africa, and is a potential threat to latin american (la) cassava production. although this viral disease is still unknown in la, its vector - the whitefly - has recently been found. the disease is best controlled through host-plant resistance, which was first found in third backcross derivatives of an interspecific cross between cassava and manihot glaziovii, and is thought to be polygenic. recently, hi ... | 2002 | 12582500 |
| genetic analysis and qtl mapping of early root bulking in an f1 population of non-inbred parents in cassava ( manihot esculenta crantz). | the genetic basis of early bulking in cassava was studied in a replicated, multi-locational trial using 144 f1 progeny derived from an intra-specific cross between two non-inbred parents. a second, sequential harvest experiment examined the relative importance of eight yield-related traits on early bulking and their qtls during the crop growth cycle. our objectives were to identify traits, and genes controlling them, strongly associated with early yield as a first step to marker-assisted improve ... | 2002 | 12582871 |
| multitasking in replication is common among geminiviruses. | geminiviruses package single-stranded circular dna and replicate via double-stranded dna intermediates. during the past decade, increasing evidence has led to the general acceptance that their replication follows a rolling-circle replication mechanism like bacteriophages with single-stranded dna. in a recent study, we showed that this is also true for abutilon mosaic geminivirus (abmv), but that this particular virus may also use a recombination-dependent replication (rdr) route in analogy to t4 ... | 2003 | 12584322 |
| metabolic engineering of valine- and isoleucine-derived glucosinolates in arabidopsis expressing cyp79d2 from cassava. | glucosinolates are amino acid-derived natural products that, upon hydrolysis, typically release isothiocyanates with a wide range of biological activities. glucosinolates play a role in plant defense as attractants and deterrents against herbivores and pathogens. a key step in glucosinolate biosynthesis is the conversion of amino acids to the corresponding aldoximes, which is catalyzed by cytochromes p450 belonging to the cyp79 family. expression of cyp79d2 from cassava (manihot esculenta crantz ... | 2003 | 12586901 |
| plant feeding by a predatory mite inhabiting cassava. | plant feeding by arthropod predators may strongly affect the dynamics of bi-and tri-trophic interactions. we tested whether a predatory mite, typhlodromalus aripo, feeds upon its host plant, cassava. this predator species is an effective biological control agent of monoychellus tanajoa (the cassava green mite or cgm) a herbivorous mite specific to cassava. we developed a technique to detect plant feeding, based on the use of a systemic insecticide. we found that t. aripo feeds upon plant-borne m ... | 2002 | 12593510 |
| effects of dietary fermentable carbohydrates on behavior and heat production in group-housed sows. | the effects of dietary nonstarch polysaccharides (nsp) on behavior and heat production in group-housed sows were studied. twelve groups of six nonpregnant sows were fed one of four experimental diets that were similar in composition except for starch and nsp contents. exchanging sugar beet pulp silage (sbps) for tapioca created the difference in dietary starch and nsp ratio. on a dry matter (dm) basis, diets contained 0, 10, 20, or 30% sbps. sows were group-housed. intake of fermentable nsp (fns ... | 2003 | 12597389 |
| the clinicopathologic significance of enriching grated cassava mash with red palm oil in the production of gari. | the neglect of traditional processing methods in the production of gari (toasted cassava granules) has been blamed for reported cases of poisoning following consumption of gari. this study investigated the nutritional and clinicopathologic effects of not enriching cassava mash with red palm oil (rpo) during gari production. two gari samples were produced with and without rpo. total cyanogen, acetone cyanohydrin, free cyanogen, and crude protein contents were not found to be significantly (p > 0. ... | 2002 | 12602937 |
| efficient replication of cloned african cassava mosaic virus in cassava leaf disks. | a transient viral replication assay for cloned african cassava mosaic virus (acmv) was developed using cassava leaf disks. tms60444 leaf disks were transfected using biolistic-mediated inoculation with acmv clones pkacmva and pkacmvb, which originate from west kenya acmv isolate 844 (acmv-ke). viral dna synthesized de novo was monitored by southern hybridization with an av1 dna probe. by using the methylation-sensitive restriction enzymes dpni and mboi, it was possible to distinguish between the ... | 2003 | 12606075 |
| substrate specificity of mutants of the hydroxynitrile lyase from manihot esculenta. | several tryptophan128-substituted mutants of the hydroxynitrile lyase from manihot esculenta (mehnl) are constructed and applied in the mehnl-catalyzed addition of hcn to various aromatic and aliphatic aldehydes as well as to methyl and ethyl ketones to yield the corresponding cyanohydrins. the mutants (especially mehnl-w128a) are in most cases superior to the wild-type (wt) enzyme when diisopropyl ether is used as the solvent. substitution of tryptophan128 by an alanine residue enlarges the ent ... | 2003 | 12616635 |
| the relation between starch digestion rate and amino acid level for broiler chickens. | digestion coefficients of nutrients give information about the amount of nutrients available to the animal but not about the rate or site of absorption. gradual digestion of starch may have an amino acid sparing effect and therefore enhance growth efficiency of broiler chickens. a growth trial was performed with 6,800 broiler chickens from 9 to 30 d of age to investigate interactions between starch digestion rate and amino acid level. birds were fed either a pea-corn-based diet (slowly digestibl ... | 2003 | 12619806 |
| a transformation method for obtaining marker-free plants of a cross-pollinating and vegetatively propagated crop. | it is generally thought that transformation of plant cells using agrobacterium tumefaciens occurs at a very low frequency. therefore, selection marker genes are used to identify the rare plants that have taken up foreign dna. genes encoding antibiotic and herbicide resistance are widely used for this purpose in plant transformation. over the past several years, consumer and environmental groups have expressed concern about the use of antibiotic- and herbicide-resistance genes from an ecological ... | 2003 | 12627169 |
| a novel circulating loop bioreactor with cells immobilized in loofa ( luffa cylindrica) sponge for the bioconversion of raw cassava starch to ethanol. | a circulating loop bioreactor (clb) with cells immobilized in loofa sponge was constructed for simultaneous aerobic and anaerobic processes. the clb consists of an aerated riser and a non-aerated downcomer column connected at the top and bottom by cylindrical pipes. ethanol production from raw cassava starch was investigated in the clb. aspergillus awamori iam 2389 and saccharomyces cerevisiae ir2 immobilized on loofa sponge were placed, respectively, in the aerated riser column and non-aerated ... | 2003 | 12664145 |
| new cytotoxic triterpene acids from aboveground parts of manihot esculenta from the suriname rainforest. | two novel triterpene acids, esculentoic acid a ( 1) and b ( 2) as well as the seven known compounds 3 - 9 were isolated from an etoac extract of leaves, stems, and twigs of manihot esculenta by bioassay-guided fractionation for cytotoxic activity. the structures of the two new compounds were established as 3alpha-hydroxytaraxer-14-en-29-oic acid ( 1) and 3-oxotaraxer-14-en-29-oic acid ( 2) on the basis of 1d and 2d nmr spectroscopic data interpretation and chemical conversions. the two new compo ... | 2003 | 12677535 |
| cassava (manihot esculenta) leaf and tuber concentrate in diets for broiler chickens. | experiment 1 was conducted to determine the nutritive quality of cassava tuber leaf concentrate prepared either by mixing cassava tubers and leaves together before grinding or grinding them separately before mixing. three mixing proportions of 50:50, 60:40 and 80:20 were used. samples were subjected to either sundrying or oven drying. physical examination of samples, proximate analysis and cyanide content of each of the samples were determined. in experiment 2 the sample of highest nutritive val ... | 2003 | 12688471 |
| molecular characterization of whitefly, bemisia tabaci (hemiptera: aleyrodidae) populations infesting cassava. | bemisia tabaci (gennadius) populations, collected from cassava and other plants in major cassava-cultivation areas of sub-saharan africa and from elsewhere around the world, were studied to determine their biotype status and genetic variation. random amplified polymorphic dna-polymerase chain reaction (rapd-pcr) markers were used to examine the genetic structure of the populations. the dendogram obtained using the neighbour joining method (nj) split the cassava-associated populations from the no ... | 2003 | 12699530 |
| metabolic and hormonal effects of five common african diets eaten as mixed meals: the cameroon study. | to evaluate glycaemic and insulinaemic index and in vitro digestibility of the five most common cameroonian mixed meals consisting of rice+tomato soup (diet a), bean stew+plantains (b), foofoo corn+ndolé (c), yams+groundnut soup (d), and koki beans+cassava (e). | 2003 | 12700620 |
| [neurological syndromes linked with the intake of plants and fungi containing a toxic component (i). neurotoxic syndromes caused by the ingestion of plants, seeds and fruits]. | a wide range of plants, seeds and fruits used for nutritional and medicinal purposes can give rise to neurotoxic symptoms. | 2003 | 12717675 |
| cassava flour wastewater as a substrate for biosurfactant production. | five cassava flour wastewater (manipueira) preparations were tested as culture media for biosurfactant production by a wild-type bacillus sp. isolate. no-solids (f), no-solids diluted (f/2), natural (i), natural diluted (i/2), and decanted (ips) were the tested manipueira media. the microorganism was able to grow and to produce biosurfactant on all manipueira preparations. the media whose solids were removed (f and f/2) showed better results than preparations with the presence of solids (i, i/2, ... | 2003 | 12721453 |
| tuber storage proteins. | a wide range of plants are grown for their edible tubers, but five species together account for almost 90 % of the total world production. these are potato (solanum tuberosum), cassava (manihot esculenta), sweet potato (ipomoea batatus), yams (dioscorea spp.) and taro (colocasia, cyrtosperma and xanthosoma spp.). all of these, except cassava, contain groups of storage proteins, but these differ in the biological properties and evolutionary relationships. thus, patatin from potato exhibits activi ... | 2003 | 12730067 |
| transfer and expression of an artificial storage protein (asp1) gene in cassava (manihot esculenta crantz). | in order to increase the nutritional quality of cassava storage roots, which contain up to 85% starch of their dry weight, but are deficient in protein, a synthetic asp1 gene encoding a storage protein rich in essential amino acids (80%) was introduced into embryogenic suspensions of cassava via agrobacterium-mediated gene transfer. transgenic plants were regenerated from suspension lines derived from hygromycin-resistant friable embryogenic callus lines. molecular analysis showed the stable int ... | 2003 | 12739891 |
| fish are central in the diet of amazonian riparians: should we worry about their mercury concentrations? | the amazon rain forest extends over an area of 7.8x10(6)km(2) in nine countries. it harbors a diverse human population distributed in dense cities and isolated communities with extreme levels of infrastructure. amazonian forest people, either autochthons or frontier riparians (ribeirinhos) living in isolated areas, share the same environment for survival and nutritional status. the peculiarities of the hydrological cycle determine disease patterns, agricultural conditions, and food availability. ... | 2003 | 12804520 |
| anaphylactic reaction to manioc: cross-reactivity to latex. | 2003 | 12823136 | |
| isolation of resistance gene candidates (rgcs) and characterization of an rgc cluster in cassava. | plant disease resistance genes (r genes) show significant similarity amongst themselves in terms of both their dna sequences and structural motifs present in their protein products. oligonucleotide primers designed from nbs (nucleotide binding site) domains encoded by several r-genes have been used to amplify nbs sequences from the genomic dna of various plant species, which have been called resistance gene analogues (rgas) or resistance gene candidates (rgcs). using specific primers from the nb ... | 2003 | 12827500 |
| cassava cyanogens and free amino acids in raw and cooked leaves. | cassava leaves (manihot esculenta crantz) constitute the main daily source of protein as supplement to the major staple food, the processed cassava roots in remote rural areas of africa. konzo, an upper motoneurone disease with permanent spastic paralysis of both legs, has been reported among populations consuming this unbalanced diet. in commercial pounded cassava leaves residual cyanogens and the presence of inherent potentially toxic non-protein amino acids were analysed to check their safety ... | 2003 | 12842188 |
| simple sequence repeat marker diversity in cassava landraces: genetic diversity and differentiation in an asexually propagated crop. | cassava (manihot esculenta) is an allogamous, vegetatively propagated, neotropical crop that is also widely grown in tropical africa and southeast asia. to elucidate genetic diversity and differentiation in the crop's primary and secondary centers of diversity, and the forces shaping them, ssr marker variation was assessed at 67 loci in 283 accessions of cassava landraces from africa (tanzania and nigeria) and the neotropics (brazil, colombia, peru, venezuela, guatemala, mexico and argentina). a ... | 2003 | 12856084 |