D. L. García-González, R. Aparicio-Ruiz, M. Morales
Organic food products have shown to have lower environmental impact and lower presence of chemical residues. Consumers generally have positive attitudes towards organic food because of superior taste, environment- friendliness, health, food safety and animal welfare. During last years, the demand of consumers for organic virgin olive oils have been increased as a result of their high quality image from nutritional and health aspects. In this work sixteen virgin olive oil samples, four obtained by organic and twelve from non-organic cultivation, were analysed by their quality parameters (acidity, peroxide value and UV absorption), fatty acids, sterols and volatile compounds. Qual- ity parameters were not able to discriminate between organic and non-organic samples although significant differences were found in the values of acidity and K270. Fatty acids and sterols content were able to discriminate samples ac- cording to their cultivar but did not show capacity differentiating the samples according to the cultivation system. The results of volatile analysis show that in general terms the organic virgin olive oils showed a higher concentration of volatile compounds, except for the aldehydes, whose concentration was higher in the non-organic oils, and the acids, whose concentration was similar in the both oil classes. The concentration of ketones, aldehydes, and alcohols showed significant variations (p < 0.05) between the two types of oils.
{"title":"Chemical characterization of organic and non-organic virgin olive oils","authors":"D. L. García-González, R. Aparicio-Ruiz, M. Morales","doi":"10.1051/OCL/2014031","DOIUrl":"https://doi.org/10.1051/OCL/2014031","url":null,"abstract":"Organic food products have shown to have lower environmental impact and lower presence of chemical residues. Consumers generally have positive attitudes towards organic food because of superior taste, environment- friendliness, health, food safety and animal welfare. During last years, the demand of consumers for organic virgin olive oils have been increased as a result of their high quality image from nutritional and health aspects. In this work sixteen virgin olive oil samples, four obtained by organic and twelve from non-organic cultivation, were analysed by their quality parameters (acidity, peroxide value and UV absorption), fatty acids, sterols and volatile compounds. Qual- ity parameters were not able to discriminate between organic and non-organic samples although significant differences were found in the values of acidity and K270. Fatty acids and sterols content were able to discriminate samples ac- cording to their cultivar but did not show capacity differentiating the samples according to the cultivation system. The results of volatile analysis show that in general terms the organic virgin olive oils showed a higher concentration of volatile compounds, except for the aldehydes, whose concentration was higher in the non-organic oils, and the acids, whose concentration was similar in the both oil classes. The concentration of ketones, aldehydes, and alcohols showed significant variations (p < 0.05) between the two types of oils.","PeriodicalId":46801,"journal":{"name":"OCL-Oilseeds and Fats Crops and Lipids","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83427787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
La production agricole peut etre utilisee directement pour l'alimentation humaine ou servir d'abord pour l'alimentation animale. Cette competition, qui s'exerce au niveau des produits alimentaires mais aussi en amont sur les terres agricoles, est un facteur cle de la disponibilite alimentaire mondiale. Alors qu'on connait deja approximativement la part de la production utilisee en alimentation animale, la prospective Agrimonde Terra** nous permet dans cet article d'estimer les surfaces mobilisees pour ces usages, dont certaines le sont indirectement ou virtuellement. Nous analysons d'abord la composition des regimes animaux exprimee en proteines, a l'echelon mondial en 2005, puis son evolution entre 1961 et 2009. La contribution des oleoproteagineux n'est que de 25 % mais elle a triple depuis 1961. A partir de la, la formulation de quelques hypotheses est necessaire pour estimer les surfaces virtuellement cultivees pour l'alimentation animale car definir les terres dediee a l'alimentation animale n'est pas trivial en raison de la prise en compte des coproduits issus d'une meme culture. Malgre des incertitudes importantes dans les donnees disponibles, nous montrons qu'alors que les productions animales et d'aliments pour le betail ont continuellement progresse, les surfaces correspondantes et la competition pour la terre ont meme decru ces 30 dernieres annees. En effet, la part des terres cultivees pour le betail est passe d'environ 50 % des terres cultivees dans le monde dans les annees 1970 a 37 % aujourd'hui. Cette tendance peut etre attribuee en partie a l'augmentation des rendements culturaux et a la diminution de la part des cereales dans les rations animales au profit des coproduits des oleagineux. (Resume d'auteur)
{"title":"Feeding proteins to livestock: Global land use and food vs. feed competition","authors":"Stéphane Manceron, T. Ben-Ari, P. Dumas","doi":"10.1051/OCL/2014020","DOIUrl":"https://doi.org/10.1051/OCL/2014020","url":null,"abstract":"La production agricole peut etre utilisee directement pour l'alimentation humaine ou servir d'abord pour l'alimentation animale. Cette competition, qui s'exerce au niveau des produits alimentaires mais aussi en amont sur les terres agricoles, est un facteur cle de la disponibilite alimentaire mondiale. Alors qu'on connait deja approximativement la part de la production utilisee en alimentation animale, la prospective Agrimonde Terra** nous permet dans cet article d'estimer les surfaces mobilisees pour ces usages, dont certaines le sont indirectement ou virtuellement. Nous analysons d'abord la composition des regimes animaux exprimee en proteines, a l'echelon mondial en 2005, puis son evolution entre 1961 et 2009. La contribution des oleoproteagineux n'est que de 25 % mais elle a triple depuis 1961. A partir de la, la formulation de quelques hypotheses est necessaire pour estimer les surfaces virtuellement cultivees pour l'alimentation animale car definir les terres dediee a l'alimentation animale n'est pas trivial en raison de la prise en compte des coproduits issus d'une meme culture. Malgre des incertitudes importantes dans les donnees disponibles, nous montrons qu'alors que les productions animales et d'aliments pour le betail ont continuellement progresse, les surfaces correspondantes et la competition pour la terre ont meme decru ces 30 dernieres annees. En effet, la part des terres cultivees pour le betail est passe d'environ 50 % des terres cultivees dans le monde dans les annees 1970 a 37 % aujourd'hui. Cette tendance peut etre attribuee en partie a l'augmentation des rendements culturaux et a la diminution de la part des cereales dans les rations animales au profit des coproduits des oleagineux. (Resume d'auteur)","PeriodicalId":46801,"journal":{"name":"OCL-Oilseeds and Fats Crops and Lipids","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2014-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80916377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The vitamin D has recently been the subject of many researches, demonstrating new effects, reinforcing the interest for this molecule. The interest to develop products fortified with vitamin D is thus very important. Regarding references values, it is necessary to distinguish the RDAs (Recommended Daily Allowances), single value set up at 5 μg/d for vitamin D at the European level, in order to be a reference and a labeling value, from the nutritional recommendations. These recommendations are defined by groups of population. The values vary according to the countries and the dates on which they were set, the most recent being usually higher. The vitamin D fortification is less constrained in France today than before 2006. To fortify a food with vitamin D, it is necessary to follow the rules set by the Regulation 1925/2006/EC, and use the formulations authorized, demonstrate the nutritional benefit of the fortification, and ensure that the fortification does not lead to a risk for the health of the consumers. In some countries, the vitamin D fortification has been made mandatory for some foods. In France, several products are fortified with vitamin D, especially dairy products, but also some breakfast cereals and vegetable oils. Finally, the communication that can be made on vitamin D in food or advertising is strictly regulated by the Regulation 1924/2006/EC.
{"title":"Vitamin D recommendations, fortification in France, and communication","authors":"Amélie Dhaussy","doi":"10.1051/OCL/2013063","DOIUrl":"https://doi.org/10.1051/OCL/2013063","url":null,"abstract":"The vitamin D has recently been the subject of many researches, demonstrating new effects, reinforcing the interest for this molecule. The interest to develop products fortified with vitamin D is thus very important. Regarding references values, it is necessary to distinguish the RDAs (Recommended Daily Allowances), single value set up at 5 μg/d for vitamin D at the European level, in order to be a reference and a labeling value, from the nutritional recommendations. These recommendations are defined by groups of population. The values vary according to the countries and the dates on which they were set, the most recent being usually higher. The vitamin D fortification is less constrained in France today than before 2006. To fortify a food with vitamin D, it is necessary to follow the rules set by the Regulation 1925/2006/EC, and use the formulations authorized, demonstrate the nutritional benefit of the fortification, and ensure that the fortification does not lead to a risk for the health of the consumers. In some countries, the vitamin D fortification has been made mandatory for some foods. In France, several products are fortified with vitamin D, especially dairy products, but also some breakfast cereals and vegetable oils. Finally, the communication that can be made on vitamin D in food or advertising is strictly regulated by the Regulation 1924/2006/EC.","PeriodicalId":46801,"journal":{"name":"OCL-Oilseeds and Fats Crops and Lipids","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2014-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85171637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The present study is an evaluation of the current strengths and weaknesses of the oil palm smallholder sector in Cameroon, or more precisely of the non-industrial sector, as some holdings owned by elites can reach hundreds of hectares. A randomized sample of oil palm producers was chosen after categorization into elites, migrants, natives and company workers (past and present) in four palm oil production basins in the Southern part of the country. 176 semi-structured questionnaires were administered. The production basins included: Eseka, Dibombari, Muyuka, and Lobe. Results from the study revealed that elites owned larger average areas (41.3 ha) than the other categories of oil palm producers. All categories recorded low average plantation yields, ranging from 7 to 8.4 t FFB/ha/year (with minimum yields of 3 t FFB/ha). Though the elites showed better bargaining power and higher income, all categories of producers faced similar problems such as the high cost of inputs with no governmental subsidies, the difficulty in accessing loans with low interest rates and the use of rudimentary working tools. Despite such weaknesses, the sector also demonstrates some strengths such as the ability to impose little threat to the primary forest when compared to agro-industrial plantations, the availability of a domestic and sub-regional market for red palm oil, the availability of artisanal mills with low extraction rates although able to generate more income for the producers. There is a need for governmental policies that will strengthen partnership between small and medium oil palm producers and agro-industries as it was the case during the Fonader period, in order to converge with the poverty reduction strategy intiated by the government of Cameroon.
{"title":"Strengths and weaknesses of the smallholder oil palm sector in Cameroon.","authors":"R. Nkongho, L. Feintrenie, P. Levang","doi":"10.1051/OCL/2013043","DOIUrl":"https://doi.org/10.1051/OCL/2013043","url":null,"abstract":"The present study is an evaluation of the current strengths and weaknesses of the oil palm smallholder sector in Cameroon, or more precisely of the non-industrial sector, as some holdings owned by elites can reach hundreds of hectares. A randomized sample of oil palm producers was chosen after categorization into elites, migrants, natives and company workers (past and present) in four palm oil production basins in the Southern part of the country. 176 semi-structured questionnaires were administered. The production basins included: Eseka, Dibombari, Muyuka, and Lobe. Results from the study revealed that elites owned larger average areas (41.3 ha) than the other categories of oil palm producers. All categories recorded low average plantation yields, ranging from 7 to 8.4 t FFB/ha/year (with minimum yields of 3 t FFB/ha). Though the elites showed better bargaining power and higher income, all categories of producers faced similar problems such as the high cost of inputs with no governmental subsidies, the difficulty in accessing loans with low interest rates and the use of rudimentary working tools. Despite such weaknesses, the sector also demonstrates some strengths such as the ability to impose little threat to the primary forest when compared to agro-industrial plantations, the availability of a domestic and sub-regional market for red palm oil, the availability of artisanal mills with low extraction rates although able to generate more income for the producers. There is a need for governmental policies that will strengthen partnership between small and medium oil palm producers and agro-industries as it was the case during the Fonader period, in order to converge with the poverty reduction strategy intiated by the government of Cameroon.","PeriodicalId":46801,"journal":{"name":"OCL-Oilseeds and Fats Crops and Lipids","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2014-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86151259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Le 12 decembre 2012 avait lieu a Paris, au Centre de conferences du ministere de l’Economie et des Finances, un colloque sur « l’economie verte au service de la croissance » organise par le CGAAER (Conseil general de l’alimentation, de l’agriculture et des espaces ruraux), avec l’appui des ministeres charges de l’industrie et de l’agriculture ainsi que de plusieurs partenaires, dont le « Club des Bio-economistes ». Organise en tables-rondes, il se donnait alors pour objectif de mettre en valeur la contribution des bio-filieres issues de l’agriculture, de la foret et des bio-dechets, aux grands defis du futur (le fameux « monde fini »), en faisant le point sur les enjeux et les acquis en matiere d’economie, d’innovation et de competitivite.
{"title":"Colloque « l’économie verte au service de la croissance »","authors":"É. Pilorgé, C. Roy","doi":"10.1051/OCL/2013036","DOIUrl":"https://doi.org/10.1051/OCL/2013036","url":null,"abstract":"Le 12 decembre 2012 avait lieu a Paris, au Centre de conferences du ministere de l’Economie et des Finances, un colloque sur « l’economie verte au service de la croissance » organise par le CGAAER (Conseil general de l’alimentation, de l’agriculture et des espaces ruraux), avec l’appui des ministeres charges de l’industrie et de l’agriculture ainsi que de plusieurs partenaires, dont le « Club des Bio-economistes ». Organise en tables-rondes, il se donnait alors pour objectif de mettre en valeur la contribution des bio-filieres issues de l’agriculture, de la foret et des bio-dechets, aux grands defis du futur (le fameux « monde fini »), en faisant le point sur les enjeux et les acquis en matiere d’economie, d’innovation et de competitivite.","PeriodicalId":46801,"journal":{"name":"OCL-Oilseeds and Fats Crops and Lipids","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91247177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
La filiere EMHV (ester methylique d’huile vegetale ou biodiesel) poursuit une expansion continue en France depuis pres de 20 ans et a pris un essor particulier a partir de 2008 suite a la fixation d’objectifs d’incorporation de biodiesel dans les carburants. Cette etude a ete menee afin d’evaluer l’impact socio-economique et environnemental de la filiere EMHV en France en 2010 et de comparer cet impact a celui de la filiere diesel en France en 2010. L’approche retenue est une evaluation de la filiere sur l’ensemble de la chaine de valeur afin de quantifier les valeurs caracteristiques economiques (valeur ajoutee, surplus economique global, emploi) et les externalites environnementales. Elle donne une image de la filiere francaise en 2010.
{"title":"Évaluation du poids socio-économique et environnemental de la filière biodiesel en France","authors":"T. Raes, Isabelle Spiegel, Jeanne Lubek","doi":"10.1051/OCL/2013028","DOIUrl":"https://doi.org/10.1051/OCL/2013028","url":null,"abstract":"La filiere EMHV (ester methylique d’huile vegetale ou biodiesel) poursuit une expansion continue en France depuis pres de 20 ans et a pris un essor particulier a partir de 2008 suite a la fixation d’objectifs d’incorporation de biodiesel dans les carburants. Cette etude a ete menee afin d’evaluer l’impact socio-economique et environnemental de la filiere EMHV en France en 2010 et de comparer cet impact a celui de la filiere diesel en France en 2010. L’approche retenue est une evaluation de la filiere sur l’ensemble de la chaine de valeur afin de quantifier les valeurs caracteristiques economiques (valeur ajoutee, surplus economique global, emploi) et les externalites environnementales. Elle donne une image de la filiere francaise en 2010.","PeriodicalId":46801,"journal":{"name":"OCL-Oilseeds and Fats Crops and Lipids","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2013-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81227766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
La reglementation communautaire sur les biocarburants a ete mise en place a partir de 2003 pour repondre a un triple objectif : reduction des emissions de gaz a effet de serre, reduction de la dependance energetique, et soutien a la production agricole dans un contexte ou 10 % des terres etaient obligatoirement gelees. Cette reglementation a ete renforcee en 2009 dans le cadre du « paquet energie » par l’introduction par la directive energie renouvelable d’un objectif obligatoire d’incorporation de 10 % d’energie renouvelable dans les carburants a l’horizon 2020. Cette legislation est completee par une directive qualite des carburants qui impose une reduction de 6 % d’ici 2020 de l’empreinte carbone des carburants. La forte dieselisation du parc de vehicule en Europe a conduit a une rapide progression de la consommation de biodiesel (11 millions de tonnes dont 9 produites dans l’UE). L’huile de colza est la principale matiere premiere du biodiesel. L’augmentation de la production de colza a permis de repondre a cette demande, tout en fournissant un coproduit proteique permettant de reduire significativement le deficit en proteines europeen. Le debat sur l’impact du CASI (changement indirect d’affectation des sols) des biocarburants, ainsi que celui sur l’equilibre alimentaire, a conduit la Commission europeenne, 3 ans apres avoir defini sa politique, a proposer de plafonner les carburants issus des cultures (1ere generation) a 5 % et a introduire des « facteurs CASI » dans l’evaluation des effets de reduction des gaz a effets de serre. Cette proposition qui pourrait fortement remettre en cause le developpement du biodiesel...et de la culture de colza fait a la date de redaction de cet article (juillet 2013) l’objet de difficiles negociations a Bruxelles, dont l’issue est difficile a predire.
{"title":"Biodiesel : la réglementation européenne et le débat sur son évolution","authors":"P. Dusser","doi":"10.1051/ocl/2013024","DOIUrl":"https://doi.org/10.1051/ocl/2013024","url":null,"abstract":"La reglementation communautaire sur les biocarburants a ete mise en place a partir de 2003 pour repondre a un triple objectif : reduction des emissions de gaz a effet de serre, reduction de la dependance energetique, et soutien a la production agricole dans un contexte ou 10 % des terres etaient obligatoirement gelees. Cette reglementation a ete renforcee en 2009 dans le cadre du « paquet energie » par l’introduction par la directive energie renouvelable d’un objectif obligatoire d’incorporation de 10 % d’energie renouvelable dans les carburants a l’horizon 2020. Cette legislation est completee par une directive qualite des carburants qui impose une reduction de 6 % d’ici 2020 de l’empreinte carbone des carburants. La forte dieselisation du parc de vehicule en Europe a conduit a une rapide progression de la consommation de biodiesel (11 millions de tonnes dont 9 produites dans l’UE). L’huile de colza est la principale matiere premiere du biodiesel. L’augmentation de la production de colza a permis de repondre a cette demande, tout en fournissant un coproduit proteique permettant de reduire significativement le deficit en proteines europeen. Le debat sur l’impact du CASI (changement indirect d’affectation des sols) des biocarburants, ainsi que celui sur l’equilibre alimentaire, a conduit la Commission europeenne, 3 ans apres avoir defini sa politique, a proposer de plafonner les carburants issus des cultures (1ere generation) a 5 % et a introduire des « facteurs CASI » dans l’evaluation des effets de reduction des gaz a effets de serre. Cette proposition qui pourrait fortement remettre en cause le developpement du biodiesel...et de la culture de colza fait a la date de redaction de cet article (juillet 2013) l’objet de difficiles negociations a Bruxelles, dont l’issue est difficile a predire.","PeriodicalId":46801,"journal":{"name":"OCL-Oilseeds and Fats Crops and Lipids","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2013-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86006690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Françoise Charrier, Marie-Benoît Magrini, A. Charlier, Mehand Fares, Marianne Le Bail, A. Messéan, J. Meynard
Le processus d’intensification des elevages, entame dans les annees 1970, s’est accompagne d’un developpement croissant du recours aux aliments dits « composes », fabriques a partir de differentes matieres premieres pour la plupart d’origine vegetale. Les pratiques de la formulation des fabricants d’aliments composes, fondees sur une tres forte substituabilite des matieres premieres, generent une concurrence tres forte entre ces commodites. Dans un tel contexte de marche, la valorisation de certaines especes repose sur des mecanismes permettant de contourner ou de s’affranchir de cette concurrence, mais dont l’efficacite reste fortement dependante de l’organisation des acteurs au sein des filieres. A partir de la comparaison des filieres pois et lin, nous montrons ainsi qu’au-dela de la reconnaissance de proprietes nutritionnelles specifiques pouvant valoriser differemment certaines especes, la coordination des acteurs le long d’une filiere est determinante dans la diffusion des incitations economiques et informationnelles necessaires a une orientation des agriculteurs en faveur d’especes de diversification d’interet agro-ecologique.
{"title":"Alimentation animale et organisation des filières : une comparaison pois protéagineux-lin oléagineux pour comprendre les facteurs freinant ou favorisant les cultures de diversification","authors":"Françoise Charrier, Marie-Benoît Magrini, A. Charlier, Mehand Fares, Marianne Le Bail, A. Messéan, J. Meynard","doi":"10.1051/OCL/2013011","DOIUrl":"https://doi.org/10.1051/OCL/2013011","url":null,"abstract":"Le processus d’intensification des elevages, entame dans les annees 1970, s’est accompagne d’un developpement croissant du recours aux aliments dits « composes », fabriques a partir de differentes matieres premieres pour la plupart d’origine vegetale. Les pratiques de la formulation des fabricants d’aliments composes, fondees sur une tres forte substituabilite des matieres premieres, generent une concurrence tres forte entre ces commodites. Dans un tel contexte de marche, la valorisation de certaines especes repose sur des mecanismes permettant de contourner ou de s’affranchir de cette concurrence, mais dont l’efficacite reste fortement dependante de l’organisation des acteurs au sein des filieres. A partir de la comparaison des filieres pois et lin, nous montrons ainsi qu’au-dela de la reconnaissance de proprietes nutritionnelles specifiques pouvant valoriser differemment certaines especes, la coordination des acteurs le long d’une filiere est determinante dans la diffusion des incitations economiques et informationnelles necessaires a une orientation des agriculteurs en faveur d’especes de diversification d’interet agro-ecologique.","PeriodicalId":46801,"journal":{"name":"OCL-Oilseeds and Fats Crops and Lipids","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91085286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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