Academic literature on the topic 'Pré et post récolte'
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Journal articles on the topic "Pré et post récolte"
Hinnou, Cossi Léonard, Vidjannangni Dieudonné Agbotridja, and René Nestor Ahoyo Adjovi. "Analyse des besoins en mécanisation agricole basée sur les logiques paysannes dans les pôles de développement agricole du Bénin." International Journal of Biological and Chemical Sciences 15, no. 2 (June 22, 2021): 536–49. http://dx.doi.org/10.4314/ijbcs.v15i2.13.
Full textJonathan, Gniamien Kouakou, Kanga Kouakou Hermann Michel, Tra Bi Zamble Armand, and Toure Adama. "Survivance de la Riziculture Pluviale dans le Departement De Bouake : Des Anomalies Pluviometriques a L’adaptation Paysanne." European Scientific Journal, ESJ 18, no. 24 (July 31, 2022): 131. http://dx.doi.org/10.19044/esj.2022.v18n24p131.
Full textAmadou, Nafissatou Mahamadou, and Ali Doumma. "Effet de la préexposition au soleil et du prétraitement au froid, sur l’évolution des populations de bruches dans les systèmes de stockage traditionnels des graines niébé (Vigna unguiculata(L.) Walp.) au Niger." International Journal of Biological and Chemical Sciences 15, no. 6 (February 23, 2022): 2625–35. http://dx.doi.org/10.4314/ijbcs.v15i6.29.
Full textVerneaux, V., and L. Aleya. "Comparaison des peuplements chironomidiens du lac de l'Abbaye obtenus par différentes méthodes d'échantillonnage. Intérêts de la récolte des exuvies nymphales." Revue des sciences de l'eau 12, no. 1 (April 12, 2005): 45–63. http://dx.doi.org/10.7202/705343ar.
Full textFall, Ramatoulaye, Mady Cisse, Fallou Sarr, Catherine Brabet, and Eliasse Dieme. "Pratiques culturales et gestion post-récolte du sorgho au Sénégal." International Journal of Biological and Chemical Sciences 14, no. 3 (June 19, 2020): 1001–13. http://dx.doi.org/10.4314/ijbcs.v14i3.27.
Full textDornier, Philippe Pierre. "Pré et post manufacturing : concept, typologie et évaluation économique." Revue Française de Gestion Industrielle 17, no. 1 (March 1, 1998): 7–29. http://dx.doi.org/10.53102/1998.17.01.290.
Full textCoudroy de Lille, Lydia. "L'habitat urbain polonais pré et post-socialiste." Les Annales de la recherche urbaine 92, no. 1 (2002): 25–32. http://dx.doi.org/10.3406/aru.2002.2452.
Full textAdamsbaum, C., S. Ferey, and M. L. Moutard. "IRM cérébrale : corrélations pré et post-natales." Journal de Gynécologie Obstétrique et Biologie de la Reproduction 34, no. 1 (February 2005): 7–13. http://dx.doi.org/10.1016/s0368-2315(05)82680-8.
Full textBergaoui Jebali, H., T. Ben Ayed, W. Smaoui, H. Kateb, O. Guermazi, M. Ben Hlima, M. Chirmiti, H. Ghabi, F. Ben Hmida, and M. K. Zouaghi. "Kaliémie et variation de l’électrocardiogramme en pré- et post-hémodialyse." Néphrologie & Thérapeutique 14, no. 5 (September 2018): 300. http://dx.doi.org/10.1016/j.nephro.2018.07.117.
Full textAschero, A., A. Ruocco-Angari, N. Colavolpe, B. Bourlière-Najean, C. Desvignes, P. Devred, P. Petit, and G. Gorincour. "Détection anténatale et surveillance en période pré- et post-natale." Archives de Pédiatrie 18, no. 5 (May 2011): H252—H253. http://dx.doi.org/10.1016/s0929-693x(11)71062-4.
Full textDissertations / Theses on the topic "Pré et post récolte"
Etienne, Audrey. "Quels processus physiologiques pilotent l’acidité de la banane dessert (sp. Musa) en pré et post récolte ? : Modélisation écophysiologique et analyse expérimentale de l’effet du génotype et des conditions de croissance du fruit." Thesis, Antilles-Guyane, 2014. http://www.theses.fr/2014AGUY0777/document.
Full textCitric and malic acids determine the sourness and sweetness of banana pulp, which are the two main determinants of consumer preferences. The present work focused on the physiological processes controlling the accumulation of citric and malic acids in banana pulp (Musa sp. AA) using experimental analysis and ecophysiological modeling. We chose an integrative approach linking the pre and post-harvest stages, and focused on the effect of genotype and fruit growing conditions. Experiments were conducted to study the effect of fruit load, potassium fertilization and fruit age at harvest on the accumulation of citrate and malate in banana pulp. To account for genotypic variability, three genotypes with contrasting acidity at the eating stage were studied. Major differences in the pattern of citrate and malate accumulation were found in the three cultivars both during growth and post-harvest ripening and were shown to be the result of metabolic changes. The harvest stage had a significant effect on the concentrations of acids during post-harvest ripening. Fruit load and potassium fertilization had no effect.Ecophysiological models were developed to predict several banana acidity criteria during the pre and post harvest stages. pH and titratable acidity were predicted by a model of acid-base reactions; malate content by a model of vacuolar storage; and citrate content by a model of the TCA cycle. These models led to the identification of the key physiological processes that control banana acidity. Genotypic parameters were identified, which were related to the activity of the mitochondrial malic enzyme and of the malate mitochondrial carriers in the citrate model, as well as to the activity of the vacuolar proton pump, ATPase, in the malate model. The two models were also used to analyze the effects of fruit growth conditions on banana acidity.Combining the three models in a global model of banana acidity, and the possible use of this model for varietal improvement are discussed
Sinkora, Miarka. "Quels impacts des facteurs agronomiques et technologiques sur les déterminants biologiques de la texture des purées de tomates ? : Focus sur les variétés, la réduction des intrants au champ et l’itinéraire technologique à l’usine." Electronic Thesis or Diss., Avignon, 2022. http://www.theses.fr/2022AVIG0608.
Full textTomato is one of the most consumed fruit in the world, recognized for its nutritional qualities, and in particular its high carotenoid content. Climate change and the droughts it causes are leading us to a retconsider the production methods, by reducing inputs. In the case of processing tomatoes, intended for processing, an integrated approach from the field to the puree is necessary to define the effects of low-input practices on the fruits and tomato purees, but also their interaction with the processing method and the variety. We have shown that the reduction of irrigation, and to a lesser extent of nitrogen, has little effect on the biochemical characteristics of the fruit, increases the viscosity of purees and increases the water efficiency of crops. These data are promising for reducing water consumption but also underline the importance of controlling the deficit, particularly in the case of heat waves. A moderate deficit, up to 70% of water needs seems possible. The viscosity of purees can be modified by the choice of variety and by the transformation process. We have shown that the variety and the process modify the viscosity by different mechanisms and that the quantity, the nature and the conformation of pectins play a major role in the viscosity of the purees. In addition, we observed particle agglomeration phenomena that can contribute to viscosity. Finally, our work opens perspectives on the link between the structure of the fruit and the structure and viscosity of purees, and on the way the water deficit can modify this link
Etienne, Audrey. "Quels Processus Physiologiques Pilotent l'Acidité de la Banane Dessert (sp. Musa) en Pré et Post Récolte? Modélisation Ecophysiologique et Analyse Expérimentale de l'Effet du Génotype et des Conditions de Croissance du Fruit." Phd thesis, Université des Antilles-Guyane, 2014. http://tel.archives-ouvertes.fr/tel-00985304.
Full textKadim, Saleh Ouafaa. "LeStockage des produits végétaux au Maroc : choix technique et pertes post-récolte." Besançon, 2009. http://www.theses.fr/2009BESA2001.
Full textThe food storage is a key step in the chain of plants processing activities. Despite the abundance of work in this domain, field surveys are widely dispersed. The objective of our work is to establish a repository interpretative of plant products storage structures and to identify ail the factors determining the use of a structure rather than another. This study describes and identifies the technical function of the main storage structures encountered during a survey in three regions in northern, western and southern Morocco. The survey shows that rural moroccan tribes do not have the same importance to the various plant food storage techniques. From north to south of Morocco, we met with various techniques. This technical choice is not only linked to changes in regional eating habits, it is also influenced by a variety of environmental and socio-economic. The type of cereal does not govern this choice: it is the destination of grain harvested (sale, consumption or sowing), which determines the storage system. The study also addresses the conservation of crops which are not always attaches importance. Cereals are stored in Morocco as part of food security until the next harvest. Depending on the length of storage, the efficacy of cereals storage techniques. These commodities may suffer substantial qualitative and quantitative losses due to a variety of pests. This research presents the results of an evaluation of dry weight losses due to the insects attacks during the underground storage (underground pits) and aboveground storage (plastic bags) of the cereals (durum wheat, common it and maize). Our study bas been performed in the region of Doukkala (North Western of Morocco). During a period of tow, six and twelve months, we have taken 80 samples of wheat and maize from the underground pits and plastic bags. Results Shaw the corns were preserved better of underground pits than of plastic bag. The maize represents the highest losses rates in the level of underground and aboveground storage, a weight decrease of about 3,5% and 8,740/ were recorded during its conservation. Rates of insects attacks which are low or almost zero at the beginning of storage, easily reach 4,74% and 19% at the end of one year of storage. This work evaluates cereals weight losses due sects attack during storage in our area of study, and identifies the sources and the factors responsible for insects' infestation
Gonzalez, Rios Oscar. "Impact des technologies de traitement post-récolte sur la qualité aromatique et sensorielle du café." Montpellier 2, 2004. http://www.theses.fr/2004MON20028.
Full textAhmed, Hoda Mohamed Hussein. "Impact des traitements pré-récolte (chimique et biologiques) sur les écosystèmes fongiques et la contamination par l'ochratoxine A de raisins." Thesis, Montpellier 2, 2013. http://www.theses.fr/2013MON20052/document.
Full textThe grape and wine industry is affected by the presence of Ochratoxin A (OTA) in its products because of contamination of grapes by strains of Aspergillus section Nigri. Grapes and wine are considered as the second contributors in Europe to the ingestion of this mycotoxin with nephrotoxic, neurotoxic and teratogenic effects. The main objective of this work is to provide non-chemical alternative methods to control OTA contamination in grapes and wine, in respect with environment and health of producers and consumers. Different treatments were compared in experimental vineyard PECH-ROUGE of INRA and IFV, Narbonne, France on near parcels after artificial contamination of the Mourvèdre grape cultivar by A. carbonarius: (OTA producing fungus; OTA-PF) a chemical fungicide (Scala®); Saccharomyces cerevisiae and Trichoderma atroviride as antagonists; and a plant extract as elicitor (Stifénia®). Two untreated parcels served as controls, one was artificially contaminated. A significant reduction (38 - 42%) was observed in the OTA juice content by the chemical, yeast bioagent and elicitor treatments with juice safety improvement under the standard at 2 g/Kg. The microbiological enumeration and Q-PCR using universal and specific primers for A. carbonarius had shown the highest reduction of its occurrence on grapes and stems from elictor treatment. The DGGE gave an overview on their effect on the fungal ecosystem, that showed higher similarity between the non-contaminated and elicitor treatment (76%) followed by yeast one and the lowest treatment was the contaminated one. The results obtained from traditional methods of isolation showed that the elicitor treatment had a higher proportion of fungal species from Penicillium and Fusarium genera not isolated in the other treatments. The two biological treatments and one elicitor treatment significantly increased the thickness of the berry skins in general (wax, cuticle layers and skin thickness), which could be related to the enhancement of the disease resistance of the grape berries to certain pathogens and could also simultaneously explain the OTA reduction and the grape juice quality improvement whith particular increasment of polyphenol contents. Further study was conducted in order to understand the Stifénia® mode of action because the reduction effect of the black aspergilli incidence and the OTA contamination while the isolated strains still have the high ability of producing OTA. Trans-6-nonenal and trans-2-octenal, which recognized in Stifénia® treatment leaves with the highest significant concentration regarding to their concentration with the chemical treatment during volatile organic compound (VOC) analyses, have antifungal activity against the OTA-PF growth and OTA production with low concentrations. No antifungal activity of the Stifénia® powder against the OTA-PF mycelial growth or toxigenesis were measured. That may partially explain the mode of action of plant defence by producing leaf VOCs that induce positive changes on the OTA-PF and its OTA contents in grapes. Due to ecosystem changes observed, an other potential effect of the induced defense with Stifénia treatment could be to promote fungal strains with antagonistic effect on A. carbonarius. In vitro antagonistic test was performed with Stifénia® non-Aspergillus isolates from Penicillium and Fusarium genera. Certain strains had a positive effect on mycelial growth reduction on OTA-PF and have also an effect on OTA production of OTA-PF. Penicillium adametzioides showed the highest reduction of toxigenesis of OPT-PF. This could be accomplished by applying as the elicitor one of the tested fungi with an antagonistic effect on OTA production, such as P. adametzioides. The Elicitor treatment therefore offers very good alternatives to chemical treatments to fight against toxigenic fungi directly or by giving new potential biological agents
Ayala, Garay Oscar Javler. "Etude écophysiologique de deux cultivars de cerfeuil tubéreux, Chaerophyllum bulbosum L. : accumulation d'amidon dans les tubercules et impact des modes de conservation sur l'hydrolyse de l'amidon." Rennes, Agrocampus Ouest, 2002. http://www.theses.fr/2002NSARC065.
Full textMounjouenpou, Pauline. "Aspergillus noirs producteurs d’ochratoxine A dans le cacao : biodiversité et incidence des traitements post-récolte au Cameroun." Montpellier 2, 2008. http://www.theses.fr/2008MON20138.
Full textThe effect of post-harvest processes on cocoa contamination by OTA was studied. The type of fermentation (box or heap) did not significantly influence total fungal microflora, toxigenesis, or bean OTA content. However, pod integrity and time to pod opening were aggravating factors for contamination. The ochratoxigenic strains isolated belonged to the species A. Niger agg (producing less OTA with a maximum content of 3. 6 ng. G-1) and A. Carbonarius (for which the maximum reached 2772 ng. G-1). All the A. Carbonarius isolates were OTA producers, whereas only 8% of the A. Niger agg isolates were. The growth and toxigenesis of these strains depended on physico-chemical and environmental conditions. Water activity was an essential factor (optimum production between 0. 95 and 0. 99). Among alkaloids naturally present in cocoa beans (caffeine, theobromine and epicatechin), only caffeine exhibited an effect on growth and toxigenesis. Identification of Aspergillus species on cocoa using PCR techniques with specific primers made it possible to separate A. Carbonarius and the A. Niger agg complex. However, the components of the complex were neither dissociable by this technique, nor by sequencing of the amplificates of the ITS1/ ITS2 partial fragments. The black Aspergillus isolated displayed substantial biodiversity. A study of the genomic profiles obtained by RAPD-PCR revealed that this biodiversity depended neither on the year of the cocoa season, nor on the type of post-harvest processing; however, it could be influenced by the degree of bean processing. Pod condition and, more generally, good agricultural practices were the best guarantee of safety
Durand, Noël. "Dynamique des populations microbiennes au cours dutraitement post récolte du café et relations interspécifiques entre souches ochratoxinogènes." Thesis, Montpellier 2, 2012. http://www.theses.fr/2012MON20232/document.
Full textOchratoxin A (OTA) is mainly produced on coffee beans by fungal species Aspergillus ochraceus and Aspergillus westerdijkiae, and is known for its impact on human health through nephrotoxic, immunotox, teratogenic and oncogenic effects.The OTA content in coffee was shown to be closely linked to harvesting conditions, post-harvest processing conditions and especially dry processing, storage and transportation conditions. In some producing countries, damaged caused on beans by fungal communities undoubtedly lead to high OTA contents in coffee. In order to understand the OTA contamination process, the dynamics and biodiversity of microbial populations (bacteria, yeast and moulds) was analyzed during post-harvest treatment by use of a global microbial ecology approach at the molecular level, so-called PCR-DGGE. Specific variations in evolution and diversity of microbial flora were observed as a function of the step and type of treatment, which were specific of the location of production. The genomic region targeted by the global approach and the genetic proximity of ochratoxigenic fungal strains made their study and identification difficult using the the global approach. In addition, a simple and rapid method for the molecular differentiation of A. westerdijkiae and A. ochraceus was established and, coupled with image analysis, allowed the quantification of A. westerdijkiae.Moreover, competition and inhibition effects on growth and OTA production (>90%) could be observed for low OTA producers A. niger and A. ochraceus species towards the high OTA producer A. westerdijkiae species. Results obtained during this study are of importance for understanding microbial population dynamics during coffee transformation processes. Moreover, it provides possible clues for prevention and control of coffee contamination by OTA
Belkacem, Nesrine. "Distribution des moisissures post-récolte et action antifongique des bactéries lactiques isolées du blé dur en Tunisie." Thesis, Aix-Marseille, 2013. http://www.theses.fr/2013AIXM4350.
Full textDuring storage and under bad storage conditions, wheat grains can undergo various alterations caused by fungal growth. Molds can produce toxins that can have an impact on consumer health. Assessment of fungal diversity on wheat storage locally produced cereal in northern Tunisia during two successive years (2010-2011 and 2011-2012) showed a dominance of the genus Alternaria. Study of kinetics evolution of mycoflora during storage is characterized by a particular pattern depending on geographic and temporal parameters and ecophysiological conditions. Evaluation of toxigenic fungal revealed a low percentage of ochratoxinogenic isolates. Occurence of OTA in wheat showed contamination levels under European standards. The study on sporulation physiology and production of OTA by Solid State Fermentation by A. carbonarius shown amplification and production of conidiospores OTA wet forced by aeration. The evaluation of the antifungal activity of lactic acid bacteria (LAB) isolated from the 15 wheat storage against 8 post-harvest molds showed good ability of Lb. plantarum to inhibit the growth of these fungi. The study of anti-ochratoxinogène activity Lb. LabN10 plantarum, Lb. and P. graminis LabN11 LabN12 pentosaceus showed a significant effect of temperature, pH and the bacterial biomass on the inhibition of the fungal biomass and on the reduction of OTA
Books on the topic "Pré et post récolte"
La naissance, l'histoire et le développement de la culture: Pré-culture, culture et post-culture. Paris: Harmattan, 2014.
Find full textClaude Marouzé avec Patrice T. CANAL DE VANNAGE POUR GRAINS ET GRAINES - Dossier de fabrication - Projet Fonio CFC/ICG - Amélioration des technologies post-récolte du Fonio. Paris: Editions L'Harmattan, 2005.
Find full textPAUCHET-V. Congrès national de gynécologie, Rouen, avril 1904. 1° Régime pré-et-post-opératoire des. HACHETTE LIVRE-BNF, 2018.
Find full textNature & Belle éditions. Herbier Mes Fleurs et Plantes des Montagnes: Cahier Herbier à Compléter de Fleurs et Feuilles Séchées Pressées-Carnet de Récolte Toutes Saisons-avec Fiches Guides Pré-remplies et Complètes-étiquettes-livre Botanique Herbier Pour Enfant et Adultes-activité. Independently Published, 2020.
Find full textCADAUR, Louis. Chroniques 2018 - 2021 du « Connard Déchaîné »: Chroniques Libres et Sans Masque d'un Citoyen de 82 Ans Sur les Petits Faits Politiques et Sociaux de la France Pré et Post COVID. Independently Published, 2021.
Find full textBook chapters on the topic "Pré et post récolte"
Mitalaitė, Kristina. "Éduquer le regard et construire la visibilité chrétienne : le visible et l’image dans la période pré- et post-nicéenne." In L'icône dans la pensée et dans l'art, 219–55. Turnhout: Brepols Publishers, 2017. http://dx.doi.org/10.1484/m.sbhc-eb.5.111932.
Full textLemaitre, Véronique. "1.Little Big Man : symptômes dépressifs en pré- et post-partum, dystocie obstétricale et processus de parentalisation." In La grossesse, l'enfant virtuel et la parentalité, 559. Presses Universitaires de France, 2004. http://dx.doi.org/10.3917/puf.misso.2004.01.0559.
Full textIlic, Sanja, Pay Drechsel, Philip Amoah, and Jeffrey T. LeJeune. "Application de l’approche à barrières multiples pour réduire les risques microbiens dans le secteur post-récolte des légumes irrigués avec des eaux usées." In L'irrigation avec des eaux usées et la santé, 259–80. Presses de l'Université du Québec, 2011. http://dx.doi.org/10.2307/j.ctv18pgj60.21.
Full textLe Nestour, Annick, and Daniel Tarnopolsky. "S’allier, se relier : soigner. Prises en charge conjointes psychomotrice et psychothérapique parents/bébé en cas de dépression parentale en post- et pré-partum." In Les soins en périnatalité, 227–40. Presses Universitaires de France, 2019. http://dx.doi.org/10.3917/puf.lefeb.2018.03.0227.
Full textTRYBISZ, Mirosław. "La chanson en tant qu’un outil didactique multidimensionnel." In Langues chantées / Cultures mises en musique, 149–56. Editions des archives contemporaines, 2022. http://dx.doi.org/10.17184/eac.5442.
Full textConference papers on the topic "Pré et post récolte"
Del Lungo, Andrea. "Introduction: Pré-, post-, et in media." In Le début et la fin. Roman, théâtre, B.D., cinéma. Fabula, 2008. http://dx.doi.org/10.58282/colloques.1294.
Full textLan, R., R. Castro, L. Ammar, P. Roche-Poggi, P. Tavitian, and O. Richard. "Pronostic des implants zygomatiques dans la réhabilitation du sujet partiellement ou totalement édenté maxillaire : étude rétrospective observationnelle." In 66ème Congrès de la SFCO. Les Ulis, France: EDP Sciences, 2020. http://dx.doi.org/10.1051/sfco/20206602007.
Full textSicard, L., and R. Khonsari. "Conséquences dentaires de la dysjonction pterygo-maxillaire pendant les chirugies d’avancée fronto-faciale monobloc dans le traitement des syndromes de Crouzon." In 66ème Congrès de la SFCO. Les Ulis, France: EDP Sciences, 2020. http://dx.doi.org/10.1051/sfco/20206602001.
Full textAmroun, S., Y. Zouari, and A. Bouattour. "Fermeture de communication bucco-sinusienne par autogreffe osseuse." In 66ème Congrès de la SFCO. Les Ulis, France: EDP Sciences, 2020. http://dx.doi.org/10.1051/sfco/20206602012.
Full textReports on the topic "Pré et post récolte"
Savard, M. M. Diagénèse pré- et post-minéralisation: implications pour le dépôt de Gays River, Nouvelle-Écosse. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1992. http://dx.doi.org/10.4095/133583.
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