Analysis of post-harvest treatment practices for kola (Cola nitida) using the HACCP system in three cities of Côte d'Ivoire

The purposes of this study were to compare the modalities of the post-harvest practices of these two groups and to statistically identify the modalities responsible of non-quality (under grade) on the basis of results of Pareto chart and proportion of successes calculated for each modality. A survey about of modalities of post-harvest processing methods and about the quality of the beans obtained was conducted among producers of the largest producing region of Côte d’Ivoire. The collected data were analyzed by the chi-square test of concordance and the Pareto chart. The results show that there is no correlation between practice of the individual farmers and the farmers in cooperatives. Highly significant differences (p-value < 0.001) were observed in the number of brewing; the fermentation time; the materials of fermentation and drying impacting the quality of merchantable cocoa. Samples collected from farmers into cooperatives have fewer defects than those of individual farmers. Regarding the modalities of the post-harvest practice responsible of the under-grades, the results showed that the samples of farmers in cooperatives had fewer defects than those of individual farmers. Thus, obtaining a good quality cocoa beans must take into account the best modality at each step of post-harvest practices. However certain modality should be avoided. These are: the time breaking pods of one day; the absence of brewing during the fermentation; the time of fermentation less than or equal to three days and the time of drying less than or equal to two days.

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Microbiological Safety and Quality Assessment of Maize (Zea mays L) Produced and Stocked from Rural Conditions in Côte D’ivoire

Journal of Advances in Microbiology ◽

10.9734/jamb/2021/v21i630360 ◽

2021 ◽

pp. 60-74

Author(s):

Kouamé Désiré ◽

Niamketchi Gilles Léonce ◽

Konan Constant ◽

Konan Ysidor ◽

Biego G. Henri Marius

Keyword(s):

Zea Mays ◽

Ochratoxin A ◽

Cote D'ivoire ◽

Fungal Pathogens ◽

Côte D’Ivoire ◽

Zea Mays L ◽

Microbiological Analysis ◽

Cote D’Ivoire ◽

Post Harvest ◽

Côte D'ivoire

Aims: Fungal pathogens are one of the main biological agents causing maize post-harvest loss and affect food security in the country. Thus, this study was conducted to assess fungal pathogens associated to post-harvest maize (Zea mays L.) with especial focus to mycotoxin-producing fungi at producer’s storage condition in different regions of Côte d’Ivoire. Study Design: A total of 1 500 samples of maize as grains, cobs and husks were collected at rate of 500 samples by region (Gbêkê, Poro, Hambol, Indénié-Djuablin and Gontougo) and sent to the laboratory in order to analyse their sanitary quality. Place and Duration of Study: This study was carried out during March 2016 to January 2017. The analyses of the collected sample carried out at the Biotechnology, Agriculture and Valorisation of Biological Resources Laboratory of the Félix Houphouët-Boigny’s University, Abidjan. Methodology: Microbiological analysis was assessed by recording the number of colony in the plate. The contents of aflatoxin and ochratoxin A in the different samples were determined using standard methods. Results: The total microbial species isolated ranged from 104 to 1011 cfu/g with thermotolerants coliforms (103 – 104) and fecal coliforms (102 – 103). The stored maize samples contained also high amount of yeast and molds (104 to 107 cfu/g). Aspergillus genus was the predominantly fungal isolated in all maize samples with tree species which are A. flavus, A. niger and A. versicolor potential producers of mycotoxins. More importantly, stored maize sample as grain, cobs and husks were affected by aflatoxins (B1, B2, G1 and G2) and ochratoxin A. Sixty per cent of the maize samples, mostly husks, showed aflatoxin B1 (from 12.73 to 130.31 µg/kg) and OTA (from 16.75 to 134.21 µg/kg) concentrations above the Maximum Authorized Limit of 5 µg/kg. Conclusion: A significant variability from one region to another can be noticed at level of maize quality regardless the type of maize. The sanitary quality of maize seems to be tied to postharvest treatments (drying), type of storage (grains, cobs and husks) and structure of storage.

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Evaluation de clones de colatiers (Cola nitida [Vent.] Schott et Endlicher) pour leur tolérance à la maladie du balai de sorcière du colatier en Côte d’Ivoire

International Journal of Biological and Chemical Sciences ◽

10.4314/ijbcs.v13i7.29 ◽

2020 ◽

Vol 13 (7) ◽

pp. 3347-3354

Author(s):

Nadré A. Gbedie ◽

Kouakou T. Kouadio ◽

Yaya Ouattara ◽

Klotioloma Coulibaly ◽

Bouadou Bonsson ◽

...

Keyword(s):

Cote D'ivoire ◽

Côte D’Ivoire ◽

Grand Nombre ◽

En Bloc ◽

Cote D’Ivoire ◽

Côte D'ivoire ◽

Cola Nitida

La maladie du balai de sorcière du colatier est la maladie la plus importante du colatier car elle engendre d’énormes pertes de production. L’objectif principal de cette étude était d’identifier des clones de colatiers d’origine ivoirienne qui affichent le meilleur profil de tolérance à la maladie du balai de sorcière et ayant des paramètres de rendement intéressants. Pour atteindre cet objectif, un dispositif expérimental en bloc complètement randomisé à 3 répétitions a été utilisé et le facteur étudié est le clone avec 13 modalités. Les résultats obtenus montrent que 5 clones (clones 305, 314, 318, A2 et A3) n’ont pas subi d’attaque de la maladie. Les clones 311, 313, 315, 321 et 322 ont été moyennement attaqués. Sur la base des paramètres de rendement tels que le poids des noix par follicule et le nombre de noix par follicule, les clones 313 et 323 ont produit les plus grosses noix dont le poids moyen varie entre 31,98±11,60 g et 34,97±8,54 g et le clone 316 a donné un plus grand nombre de noix par follicule (en moyenne, 10,63±1,55 noix par follicules). Une classification combinant le niveau de tolérance des clones et les paramètres de rendement étudiés ont permis d’identifier les clones 313, 322 et 323 comme étant les meilleurs.Mots clés : Maladie du balai de sorcière, colatier, pertes de production, rendement.

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