Cochlospermum tinctorium A. Rich. (Bixaceae) is a widespread herbaceous plant in the African sahelian and soudanian zones. Its root is used as food and medicinal plant. Studies of secondary metabolites, functional activities and trichromatic parameters were realized according to standard methods of laboratory. At a threshold of α = 0.05, significant correlations (p < 0.05) were found between secondary metabolites contents and functional activities such as radical scavenging activity of antioxidant component or hydroxyl radical scavenging activity. The value of DPPHH was 95.56 ± 0.94% for CT inner Matrix with variation of 0.12% for CT Soaked inner Matrix and 1.63% for CT Peeler. But HSRA was 37.14 ± 5.71 for CT inner Matrix with variation of-38.46% for CT Soaked inner Matrix and-71.79% for CT Peeler. Cochlospermum tinctorium root has exhibited efficiency to heal many diseases thanks to multiple bioactive compounds. In addition, the colour of powders depended upon chemical compounds. Finally, Cochlospermum tinctorium root was found to neutralize organic radicals and reactive oxygen species.
Aims: This study was aimed at evaluating the effect of the method of processing on the antinutrient content of flours made from Tacca leontopetaloides (Tacca) tubers. Study Design: Two experimental designs -the randomized block and the doehlert designs -were used in the study. Place and Duration of Study:The study was carried out in the Laboratoire d'ingenierie et Biomolecules of the University of Lorraine, France between September 2011 and May 2012. Methodology: Fresh tacca tubers were peeled, sliced and subjected to six different soaking and boiling conditions: unprocessed, 36 h soaking-4h boiling, 72h soaking, 4h boiling, 4h boiling-36 h soaking, 4h acid boiling, 4h alkaline boiling. Following the doehlert design, 9 treatments were obtained within the experimental domain of soaking (0 to 48h) and boiling time (3 to 5 h). The
Cochlospermum tinctorium A. Rich. (Bixaceaee) est une plante répandue dans la bande sahélosoudanienne africaine. Sa racine tubéreuse est utilisée soit comme aliment de soudure et soit comme un organe végétal hépatoprotecteur. Cette racine a été prélevée à Mindaoré/Fianga (Tchad), réduite en poudre et soumise à des analyses chimiques des antinutriments selon des méthodes bien documentées avant d'être testée sur cinq groupes de rats albinos (Rattus norvegicus L). A la fin de l'expérimentation, des analyses biochimiques et hématologiques ainsi que la pesée d'organes ont été effectuées. A un seuil de 5%, les résultats ont révélé des proportions importantes d'antinutriments dans la racine de C. tinctorium. Les corrélations entre ces derniers et les paramètres étudiés et l'évaluation de la masse des différents organes des rats a montré que la consommation de la racine de C. tinctorium n'est pas nocive à l'organisme animal mais relance plutôt l'activité des organes vitaux tels que le foie. En définitive, la consommation de C. tinctorium a un effet sur le statut pondéral et glycémique et sur le cholestérol total du rat. Néanmoins, il est intéressant d'étudier l'histologie des organes vitaux de l'animal testé.
Sorghum bicolor is the main food widely used to feed millions of people in Central and West Africa. Sorghum production in Sub-Saharan Africa is limited by biotic factors including the parasitic witchweed Striga hermonthica. In Northern Cameroon chemical and organic fertilizers, biological methods and cultivation practices were used by farmers to control Striga hermonthica in field. Some farmers spread sodium carbonate salt (locally named natron or kilbou) in high rates in fields to reduce parasite infestation but in high rate. This salt plays an important role in soil pH buffering. This study was conducted to evaluate effects of different rates of natron on striga emergence and on agro-morphological parameters of sorghum using a susceptible genotype GD-MP04. Field experiments have been conducted from 2017 to 2018 at Touboro, Mayo-Rey Division in the North Region located between longitude 13°34’; 12°07’ East and latitude 7°21’; 15°01’North. The experimental design was a complete randomized bloc with pots (11 m × 11 m) filled with soil naturally infected by striga seeds and different rates of sodium carbonate (0 g, 2 g, 4 g, 6 g, 8 g, 10 g and 12 g per 5 dm3 of soil) were employed. The numbers of emerged striga and sorghum parameters were evaluated. Results showed that striga-infestation and agro-morphological parameters of sorghum varied significantly (p <0.05) with rates of sodium carbonate. The mean number of emerged striga plants per pot varied from 0.08 in pot of 2 g of salt to 5.4 in the control. The number of sorghum leaves per plant, stem diameter, sorghum height, panicle weight and sorghum kernel yield varied significantly (p <0.05) with natron application rate. The application of 2 g of sodium carbonate per pot was the optimal rate to control Striga hermonthica and improve the main agro-morphological parameters of sorghum with 78.27% increase in g of kernel yield and simultaneously inhibited striga infestation by 98.62%. Application of 2 g of sodium carbonate in area naturally infested by striga for improving sorghum yield is required.
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