Technical and support mission report for validation of instrumental textural characterization of eba at IITA, Nigeria. Biophysical characterization of quality traits, WP2

Ayetigbo Oluwatoyin, Mestres Christian. 2022. Technical and support mission report for validation of instrumental textural characterization of eba at IITA, Nigeria. Biophysical characterization of quality traits, WP2. Ibadan : RTBfoods Project-CIRAD, 21 p.

https://doi.org/10.18167/agritrop/00755

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Url - éditeur : https://rtbfoods.cirad.fr/deliverables/scientific-cross-cutting-activities/methodological-manuals-training-material/texture

Résumé : The SOP validation is aimed at establishing the veracity of the instrumental textural characterization protocol for eba using a texture analyser. Instrumental texture attributes such as hardness, adhesiveness, cohesiveness, springiness, chewiness, gumminess, and resilience were measured. A double compression mode was considered for the procedure as it simulates the action of the mastication of food. Four cassava varieties with contrasting qualities were used to produce gari which was cooked to produce eba. Two sets of replicate measurements were made for a fixed cylindrical sample geometry (36 mm diameter, 22 mm height) at 35 oC, and a combination of measurement parameters (pre-test speed 1 mm/s, test speed 1.75 mm/s, strain 40 %, compression cycle interlude 10 s, aluminium compression probe 30 mm diameter). Statistical analyses of the data obtained assist to determine the accuracy of data and validity of the procedure for texture measurement. Analysis of variance (ANOVA) to determine effect of measurement variables and repeatability between replicate measurements were conducted. Also, discrimination between various cassava genotypes based on their textural attributes were determined from principal components (PCA), discriminant, and hierarchical analyses.

Mots-clés libres : Eba, Textural attributes, Principal components, Discriminant analysis, ANOVA, Texture analyser, Validation

Agences de financement hors UE : Bill and Melinda Gates Foundation, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, Centro Internacional de Agricultura Tropical, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, James Hutton Institute

Projets sur financement : (FRA) Breeding RTB Products for End User Preferences

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