Training and support mission on instrumental textural characterization of extensibility of pounded yam by uniaxial extension and bi-extensional viscosity at CNRA and UNA, Côte d'Ivoire. 27/03/2023 - 07/04/2023

Ayetigbo Oluwatoyin, Mestres Christian, Dufour Dominique. 2023. Training and support mission on instrumental textural characterization of extensibility of pounded yam by uniaxial extension and bi-extensional viscosity at CNRA and UNA, Côte d'Ivoire. 27/03/2023 - 07/04/2023. Bouaké : RTB Breeding Project-CIRAD, 26 p.

Résumé : The instrumental measurement of extensibility texture (which represents sensory stretchability) may be considered as an important procedure for measuring the quality parameter in selecting yam genotypes for pounded yam. Nineteen alata and rotundata varieties of yams from several Ivorien populations were collected in CNRA Bouake station to determine the baseline characteristics of the yams regarding the pounded yam extensibility. The uniaxial extensibility (UAE) and the bi-extensional viscosity (BEV) of pounded yam was determined by standard operating procedures (SOP) after the pounded yam was prepared following a standard method. The training mission was conducted to train the Centre National de Recherche Agronimique (CNRA) and Université Nangui-Abrogoua (UNA) teams to set up and measure extensibility of pounded yam instrumentally using the texture analyser and standard procedures; uniaxial extensibility and lubricated squeezing flow (LSF). Some Statistical evaluations were presented to show the accuracy, repeatability, and discriminant power of the procedures. Context: Support training on new SOPs to determine the instrumental extensibility texture of pounded yam Content: Instrumental extensibility texture of pounded yam Objectives: To train the partners in the setting up of the texture analyser and determination of extensibility of pounded yam by different protocols - To evaluate the accuracy, repeatability, and discriminability of extensibility texture protocols used to measure instrumental extensibility parameters - To familiarize trainees on techniques for conducting other textural measurement protocols (such as extrusion, penetration, and Texture Profile Analysis, TPA).

Mots-clés libres : Extensibility, PCA, Discriminant analysis, Pounded yam, Texture analysis, LSF

Agences de financement hors UE : Centro Internacional de la Papa, Bill and Melinda Gates Foundation, Centre de Coopération Internationale en Recherche Agronomique pour le Développement

Projets sur financement : (FRA) RTB Breeding

Auteurs et affiliations

• Ayetigbo Oluwatoyin, CIRAD-PERSYST-UMR Qualisud (FRA) ORCID: 0000-0001-5757-6674

Contributeurs et affiliations

• Mestres Christian, CIRAD-PERSYST-UMR Qualisud (FRA) - collaborateur
• Dufour Dominique, CIRAD-PERSYST-UMR Qualisud (FRA) ORCID: 0000-0002-7794-8671 - collaborateur

Source : Cirad-Agritrop (https://agritrop.cirad.fr/610221/)

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