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Lipase-catalyzed synthesis of quinate and glucuronate fatty esters
No full textThe lipase-catalyzed synthesis of fatty alcohol esters of quinic and glucuronic acid was investigated. The results showed that although a direct esterification process was possible, a strategy involving short-chain alkyl ester intermediates was advantageous. 2-Methyl-2-butanol was chosen as solvent and parameters such as substrate ratios and concentrations were optimized. Octyl, decyl and hexadecyl esters of quinic and glucuronic acids could be obtained with this process. However, reaction rates were rather slow and it could be shown that the completely chemically catalyzed synthesis of the same products using ion exchange resins was advantageous
Cooperation, collective action and natural resources management in Burkina Faso
No full textThis paper presents a detailed description of the applied methodology used to study collective action in natural resource management. Data were collected in 48 villages in northeastern Burkina Faso, at the community, institutional, household and market levels. The paper first discusses the analytical framework underlying the study of collective action, and then describes in detail the methods used to measure collective action and community-level cooperative capacity, and the determinants of cooperative capacity. We also describe data collection methods as well as potential problems in eliciting unbiased information. The impact of cooperative capacity on a variety of outcomes observed at both the community and household level is then presented in order to highlight practical applications
Cahiers Agricultures. Vision globale et étude bibliométrique pour une meilleure visibilité internationale
No full textEthnobotanique et agrobiodiversité : le cas des légumes feuilles traditionnels consommés au Bénin
No full textTechniques Séparatives Membranaires pour l'Eco-production d'extraits naturels hydrosolubles
No full textPré-caractérisation des huiles par évapo-stalagmométrie : Résultats sur l'huile extraite par CO2 SP, issue du 1er lot de biomasse algale de Nannochloropsis
No full textDes filets anti-insectes pour protéger les cultures maraîchères ou comment concilier productivité et qualité
No full text
Rapport d'activité 1995. Projet LUADP - plateau des Bolovens, Laos. Financement CIRAD - MAE/CFD
No full textCe rapport annuel est constitué de 2 parties : recherche-développement en milieu contrôlé (station de Ban Itou) et recherche-développement en milieu réel. La première partie reprend successivement les 4 opérations de recherche en cours : adaptation locale des cultivars d'arabica et de clones de robusta et arabusta (11 essais), arabica phytopathologie (3 essais), étude de la taille des caféiers (4 essais), maintien et restauration de la fertilité des sols (6 essais). La deuxième partie comporte des tableaux de pluviométrie et détaille les interventions du service vulgarisation (distribution de semences, régénération par recépage, plantations nouvelles