To respond to the demand of organic products for feed (oilmeals, protein crops) and food (oil, dry pulses), organic oilseed and protein crops surfaces are increasing rapidly in France. Terres Univia, the interbranch organisation which represents French oilseed and oil fruit sector and French high protein crops sector interests, carried out a comprehensive 2-year survey in 2016 and 2017 on the different actors of the organic production chain from the collectors to feed and food users. The study showed that organic sector was, at this time, well organized but that it had to face some challenges to meet up with the scale up of organic sectors. Collectors must ensure outlets and prices for producers, accompanying the choice and technical management of production crops. They need to reach a better matched between offer and demand to reduce their logistic cost by, for example, contracting with the producers and the users. Crushers must ensure their cost-effectiveness by enhancing the valuation of co-products (meals for rapeseed and sunflower, oil for soya) and improve their economies of scale. They also strongly rely on grain imports because of a lack of French supplies (rapeseed and soybean particularly). As for feed manufacturers, the new organic regulation for January 2022 brings even more constraints to reach the nutritional need for monogastric.
{"title":"Overview of the French organic sector of oilseeds and protein crops","authors":"C. Canale, F. Labalette, C. Guillou","doi":"10.1051/OCL/2020054","DOIUrl":"https://doi.org/10.1051/OCL/2020054","url":null,"abstract":"To respond to the demand of organic products for feed (oilmeals, protein crops) and food (oil, dry pulses), organic oilseed and protein crops surfaces are increasing rapidly in France. Terres Univia, the interbranch organisation which represents French oilseed and oil fruit sector and French high protein crops sector interests, carried out a comprehensive 2-year survey in 2016 and 2017 on the different actors of the organic production chain from the collectors to feed and food users. The study showed that organic sector was, at this time, well organized but that it had to face some challenges to meet up with the scale up of organic sectors. Collectors must ensure outlets and prices for producers, accompanying the choice and technical management of production crops. They need to reach a better matched between offer and demand to reduce their logistic cost by, for example, contracting with the producers and the users. Crushers must ensure their cost-effectiveness by enhancing the valuation of co-products (meals for rapeseed and sunflower, oil for soya) and improve their economies of scale. They also strongly rely on grain imports because of a lack of French supplies (rapeseed and soybean particularly). As for feed manufacturers, the new organic regulation for January 2022 brings even more constraints to reach the nutritional need for monogastric.","PeriodicalId":19440,"journal":{"name":"OCL","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89527306","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}
Viktória Kapcsándi, Erika Hanczné Lakatos, B. Sik, László Ádám Linka, R. Székelyhidi
In this study, we examined the yield and oil quality of eight different grape varieties. For the experiments, the grape seeds were obtained from the Benedictine Pannonhalma Archabbey in the northwestern region of Hungary. The aim of the studies was to determine the oil yield obtained by extraction and to examine the differences between the fatty acid composition, antioxidant capacity, and total polyphenol content of the oils of different grape varieties. Based on the results, the oil content of the grape seeds varied between 99.91 g/kg and 126.74 g/kg. The grape seed oils analysed contained significant amounts of stearic acid (3.42–9.93%), palmitic acid (7.81–10.66%), oleic acid (14.29–19.92%), and linoleic acid (66.85–72.47%). Besides, the grape seed oils tested contained several other fatty acids in small amounts. There were significant differences in the total antioxidant and total polyphenol content of the oils. Total polyphenol content ranged from 0.24 to 1.13 mg GAE/g, while the total antioxidant content changed between 0.12 and 0.78 μg TEAC/g. The results show that the studied varieties are suitable for the production of table grape seed oil based on their oil yield, and the oils have favourable, health-protecting properties in terms of their quality.
{"title":"Characterization of fatty acid, antioxidant, and polyphenol content of grape seed oil from different Vitis vinifera L. varieties","authors":"Viktória Kapcsándi, Erika Hanczné Lakatos, B. Sik, László Ádám Linka, R. Székelyhidi","doi":"10.1051/OCL/2021017","DOIUrl":"https://doi.org/10.1051/OCL/2021017","url":null,"abstract":"In this study, we examined the yield and oil quality of eight different grape varieties. For the experiments, the grape seeds were obtained from the Benedictine Pannonhalma Archabbey in the northwestern region of Hungary. The aim of the studies was to determine the oil yield obtained by extraction and to examine the differences between the fatty acid composition, antioxidant capacity, and total polyphenol content of the oils of different grape varieties. Based on the results, the oil content of the grape seeds varied between 99.91 g/kg and 126.74 g/kg. The grape seed oils analysed contained significant amounts of stearic acid (3.42–9.93%), palmitic acid (7.81–10.66%), oleic acid (14.29–19.92%), and linoleic acid (66.85–72.47%). Besides, the grape seed oils tested contained several other fatty acids in small amounts. There were significant differences in the total antioxidant and total polyphenol content of the oils. Total polyphenol content ranged from 0.24 to 1.13 mg GAE/g, while the total antioxidant content changed between 0.12 and 0.78 μg TEAC/g. The results show that the studied varieties are suitable for the production of table grape seed oil based on their oil yield, and the oils have favourable, health-protecting properties in terms of their quality.","PeriodicalId":19440,"journal":{"name":"OCL","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79632659","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}
Thierry Balliau, Harold Duruflé, Nicolas Blanchet, Mélisande Blein-Nicolas, N. Langlade, M. Zivy
This article describes a proteomic data set produced from sunflower plants subjected to water deficit. Twenty-four sunflower genotypes were selected to represent genetic diversity within cultivated sunflower. They included both inbred lines and their hybrids. Water deficit was applied to plants in pots at the vegetative stage using the high-throughput phenotyping platform Heliaphen. We present here the identification of 3062 proteins and the quantification of 1211 of them in the leaves of the 24 genotypes grown under two watering conditions. These data allow the study of both the effects of genetic variations and watering conditions. They constitute a valuable resource for the community to study adaptation of crops to drought and the molecular basis of heterosis.
{"title":"Proteomic data from leaves of twenty-four sunflower genotypes under water deficit","authors":"Thierry Balliau, Harold Duruflé, Nicolas Blanchet, Mélisande Blein-Nicolas, N. Langlade, M. Zivy","doi":"10.1051/OCL/2020074","DOIUrl":"https://doi.org/10.1051/OCL/2020074","url":null,"abstract":"This article describes a proteomic data set produced from sunflower plants subjected to water deficit. Twenty-four sunflower genotypes were selected to represent genetic diversity within cultivated sunflower. They included both inbred lines and their hybrids. Water deficit was applied to plants in pots at the vegetative stage using the high-throughput phenotyping platform Heliaphen. We present here the identification of 3062 proteins and the quantification of 1211 of them in the leaves of the 24 genotypes grown under two watering conditions. These data allow the study of both the effects of genetic variations and watering conditions. They constitute a valuable resource for the community to study adaptation of crops to drought and the molecular basis of heterosis.","PeriodicalId":19440,"journal":{"name":"OCL","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75523707","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 aims of the present study were to assess the phenotypic diversity among 221 sunflower accessions of INTA Pergamino Sunflower Breeding Program, to obtain discriminant functions that allow the classification of new accessions in similar groups and to evaluate the relationship between genetic distance pairwise accessions and hybrid performance for grain yield and oil content. We used 19 quantitative descriptors to evaluate phenotypic and morphological variability. Principal Component Analysis (PCA) and Hierarchical Cluster Analysis (HCA) were used to evaluate simultaneously all the variables and to describe phenotypic variation patterns of the germplasm. The distribution of germplasm in the dendrogram did not follow a clear pattern with regard to the predefined groups. This study revealed the variability observed among the lines that form the INTA Pergamino breeding program despite the highly selective forces applied to obtain inbred lines that produce superior hybrids for the Argentinean sunflower area. This work demonstrates the need for more in-depth study of genetic variability to be used as a predictor of heterosis in sunflower.
{"title":"Assessment of phenotypic variability among EEA INTA Pergamino sunflower lines: Its relationship with the grain yield and oil content","authors":"Matias Dominguez, S. Herrera, Julio González","doi":"10.1051/OCL/2021021","DOIUrl":"https://doi.org/10.1051/OCL/2021021","url":null,"abstract":"The aims of the present study were to assess the phenotypic diversity among 221 sunflower accessions of INTA Pergamino Sunflower Breeding Program, to obtain discriminant functions that allow the classification of new accessions in similar groups and to evaluate the relationship between genetic distance pairwise accessions and hybrid performance for grain yield and oil content. We used 19 quantitative descriptors to evaluate phenotypic and morphological variability. Principal Component Analysis (PCA) and Hierarchical Cluster Analysis (HCA) were used to evaluate simultaneously all the variables and to describe phenotypic variation patterns of the germplasm. The distribution of germplasm in the dendrogram did not follow a clear pattern with regard to the predefined groups. This study revealed the variability observed among the lines that form the INTA Pergamino breeding program despite the highly selective forces applied to obtain inbred lines that produce superior hybrids for the Argentinean sunflower area. This work demonstrates the need for more in-depth study of genetic variability to be used as a predictor of heterosis in sunflower.","PeriodicalId":19440,"journal":{"name":"OCL","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74916218","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}
In humans, in several biological systems, in particular the nervous system, the FADS2 gene transcribes Δ6-desaturase, which is the rate-limiting enzyme for converting α-linolenic acid into docosahexaenoic acid (an n-3 fatty acid). The peroxisome proliferator-activated receptor α (PPARα) modulates the transcription of FADS2 gene by interacting with a second transcription factor: the retinoid X receptor α (RXRα). These transcription factors take the form of a PPARα-RXRα heterodimer and are modulated by the ligands that modify their respective structures and enable them to bind to the peroxisome proliferator response element (PPRE) located in the promoter region of the FADS2 gene. Free estradiol induces the activation of PPARα via two pathways (i) transcription through genomic action mediated by an estrogen receptor; (ii) a non-genomic effect that allows for phosphorylation and activates PPARα via the ERK1/2-MAPK pathway. Phosphorylation is an on/off switch for PPARα transcription activity. Since Δ6-desaturase expression is retro-inhibited by free intracellular DHA in a dose-dependent manner, this position paper proposes an original hypothesis: if DHA simultaneously binds to both phosphorylated PPARα and RXRα, the resulting DHA-PPARαP-RXRα-DHA heterodimer represses FADS2 gene via PPRE. The retinoic acids-RARα-RXRα-DHA heterodimer would not dissociate from corepressors and would prevent coactivators from binding to FADS2. We speculate that SNPs, which are mostly located on PPRE, modulate the binding affinities of DHA-PPARαP-RXRα-DHA heterodimer to PPRE. The DHA-PPARαP-RXRα-DHA heterodimer’s greater affinity for PPRE results in a decreased production of D6D and DHA. FADS2 promoter polymorphism would increase the competition between DHA and other ligands, in accordance with their concentrations and affinities.
在人类中，在一些生物系统中，特别是神经系统中，FADS2基因转录Δ6-desaturase，这是将α-亚麻酸转化为二十二碳六烯酸(一种n-3脂肪酸)的限速酶。过氧化物酶体增殖体激活受体α (PPARα)通过与第二转录因子:类视黄醇X受体α (RXRα)相互作用来调节FADS2基因的转录。这些转录因子以PPARα-RXRα异源二聚体的形式存在，并由修饰其各自结构的配体调节，使其能够与位于FADS2基因启动子区域的过氧化物酶体增殖反应元件(PPRE)结合。游离雌二醇通过两种途径诱导PPARα的激活:(1)通过雌激素受体介导的基因组转录作用;(ii)允许磷酸化并通过ERK1/2-MAPK途径激活PPARα的非基因组效应。磷酸化是调控PPARα转录活性的开关。由于细胞内游离DHA以剂量依赖的方式逆转录抑制Δ6-desaturase的表达，本文提出了一个原始假设:如果DHA同时与磷酸化的PPARα和RXRα结合，则产生的DHA-PPARα p -RXRα-DHA异源二聚体通过PPRE抑制FADS2基因。视黄酸- rar α- rxr α- dha异二聚体不会与辅抑制因子分离，并会阻止辅激活因子与FADS2结合。我们推测，主要位于PPRE上的snp调节了DHA-PPARαP-RXRα-DHA异源二聚体与PPRE的结合亲和力。DHA- ppar α- p - rxr α-DHA异源二聚体对PPRE具有更大的亲和力，导致D6D和DHA的产生减少。FADS2启动子多态性会增加DHA与其他配体之间的竞争，这与它们的浓度和亲和力有关。
{"title":"Synthesis of DHA (omega-3 fatty acid): FADS2 gene polymorphisms and regulation by PPARα","authors":"Didier Majou","doi":"10.1051/ocl/2021030","DOIUrl":"https://doi.org/10.1051/ocl/2021030","url":null,"abstract":"In humans, in several biological systems, in particular the nervous system, the FADS2 gene transcribes Δ6-desaturase, which is the rate-limiting enzyme for converting α-linolenic acid into docosahexaenoic acid (an n-3 fatty acid). The peroxisome proliferator-activated receptor α (PPARα) modulates the transcription of FADS2 gene by interacting with a second transcription factor: the retinoid X receptor α (RXRα). These transcription factors take the form of a PPARα-RXRα heterodimer and are modulated by the ligands that modify their respective structures and enable them to bind to the peroxisome proliferator response element (PPRE) located in the promoter region of the FADS2 gene. Free estradiol induces the activation of PPARα via two pathways (i) transcription through genomic action mediated by an estrogen receptor; (ii) a non-genomic effect that allows for phosphorylation and activates PPARα via the ERK1/2-MAPK pathway. Phosphorylation is an on/off switch for PPARα transcription activity. Since Δ6-desaturase expression is retro-inhibited by free intracellular DHA in a dose-dependent manner, this position paper proposes an original hypothesis: if DHA simultaneously binds to both phosphorylated PPARα and RXRα, the resulting DHA-PPARαP-RXRα-DHA heterodimer represses FADS2 gene via PPRE. The retinoic acids-RARα-RXRα-DHA heterodimer would not dissociate from corepressors and would prevent coactivators from binding to FADS2. We speculate that SNPs, which are mostly located on PPRE, modulate the binding affinities of DHA-PPARαP-RXRα-DHA heterodimer to PPRE. The DHA-PPARαP-RXRα-DHA heterodimer’s greater affinity for PPRE results in a decreased production of D6D and DHA. FADS2 promoter polymorphism would increase the competition between DHA and other ligands, in accordance with their concentrations and affinities.","PeriodicalId":19440,"journal":{"name":"OCL","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81005826","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}
Palm oil, the commodity produced mainly in Indonesia and Malaysia, is widely used for deep-frying of fast food and food derivatives. European and American markets of palm oil are affected by the concern of the toxicity potential from monochloropropanediol esters (MCPDE) and glycidyl ester (GE) that are undesirably produced from monoacylglycerol (MAG), diacylglycerol (DAG) and chlorine in refineries. Improvement of oil palm plantation, fruit harvest and oil extraction process in palm oil mills is necessary before the refinery process so that hydrolysis reactions that produce MAG and DAG and chlorine contamination can be minimized in crude palm oil (CPO). This review focuses on the quality control currently employed in the mills especially in managing free fatty acid (FFA) formation as the indicator of the hydrolysis reactions along with other quality control parameters and the reduction of chlorine content.
{"title":"Food quality assurance of crude palm oil: a review on toxic ester feedstock","authors":"A. F. A. Nizam, M. S. Mahmud","doi":"10.1051/OCL/2021011","DOIUrl":"https://doi.org/10.1051/OCL/2021011","url":null,"abstract":"Palm oil, the commodity produced mainly in Indonesia and Malaysia, is widely used for deep-frying of fast food and food derivatives. European and American markets of palm oil are affected by the concern of the toxicity potential from monochloropropanediol esters (MCPDE) and glycidyl ester (GE) that are undesirably produced from monoacylglycerol (MAG), diacylglycerol (DAG) and chlorine in refineries. Improvement of oil palm plantation, fruit harvest and oil extraction process in palm oil mills is necessary before the refinery process so that hydrolysis reactions that produce MAG and DAG and chlorine contamination can be minimized in crude palm oil (CPO). This review focuses on the quality control currently employed in the mills especially in managing free fatty acid (FFA) formation as the indicator of the hydrolysis reactions along with other quality control parameters and the reduction of chlorine content.","PeriodicalId":19440,"journal":{"name":"OCL","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84228615","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 loss of fats in the hulls is one of the main obstacles limiting the industrial implementation of rapeseed dehulling. The main reason resides in the shape of rapeseed outer cotyledons which resemble to the hulls’ shape and make it difficult to separate. The purpose of this study is to propose a new method for the purification of rapeseed hulls. After primary separation by aspiration, the mixture of hulls and kernels is passed between a pair of flat rolls where kernels are flattened and stick to the metal while the hulls do not. We exploited this property to adapt a small laboratory flaker with two counter-rotating cylinders of 65 mm diameter with scrapers that make the kernels fall away from the hulls. Process optimization by tunning experimental conditions (hulls moisture content, roller spacing, roller speed and feed rate) allowed the determination of the optimal operating conditions. Experiments showed that wetting improves the purity of the hulls but reduces the one of the recovered kernels. A gap of 0.1 mm was necessary. In addition, it was shown that the sorting quality depends on the ratio flow-rate / rotation-speed. The best performances are reached around 1 g.s−1.rpm−1. In these conditions, the hulls and kernels purity were 96% and 94% respectively. This preliminary work has allowed us to prove the concept. The next step will be to develop a pilot plant to validate the process efficiency on a larger scale (100 kg/h).
{"title":"A new method for rapeseed hulls purification – Proof of concept","authors":"P. Carré, Jean-Philippe Loison","doi":"10.1051/ocl/2021046","DOIUrl":"https://doi.org/10.1051/ocl/2021046","url":null,"abstract":"The loss of fats in the hulls is one of the main obstacles limiting the industrial implementation of rapeseed dehulling. The main reason resides in the shape of rapeseed outer cotyledons which resemble to the hulls’ shape and make it difficult to separate. The purpose of this study is to propose a new method for the purification of rapeseed hulls. After primary separation by aspiration, the mixture of hulls and kernels is passed between a pair of flat rolls where kernels are flattened and stick to the metal while the hulls do not. We exploited this property to adapt a small laboratory flaker with two counter-rotating cylinders of 65 mm diameter with scrapers that make the kernels fall away from the hulls. Process optimization by tunning experimental conditions (hulls moisture content, roller spacing, roller speed and feed rate) allowed the determination of the optimal operating conditions. Experiments showed that wetting improves the purity of the hulls but reduces the one of the recovered kernels. A gap of 0.1 mm was necessary. In addition, it was shown that the sorting quality depends on the ratio flow-rate / rotation-speed. The best performances are reached around 1 g.s−1.rpm−1. In these conditions, the hulls and kernels purity were 96% and 94% respectively. This preliminary work has allowed us to prove the concept. The next step will be to develop a pilot plant to validate the process efficiency on a larger scale (100 kg/h).","PeriodicalId":19440,"journal":{"name":"OCL","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85276085","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}
J. Bellenger, S. Bellenger, Amina Bourragat, Quentin Escoula, P. Weill, M. Narce
Obesity, now considered as a real worldwide epidemic affecting more than 650 million people, is complex and mainly associated with excessive energy intake and changes in eating habits favoring the consumption of diets rich in saturated fat and sugar. This multifactorial pathology is linked to chronic low grade systemic inflammation. Indeed, a high fat diet (HFD) leads to intestinal microbiota dysbiosis increasing gut permeability (partly attributed to a downregulation of genes encoding tight junction proteins) leading to an increase in bacterial lipopolysaccharides (LPS) levels so-called metabolic endotoxemia. Studies have shown that n-3 polyunsaturated fatty acids (PUFAs) are involved in the prevention of obesity and insulin resistance partly through synthesis of lipid mediators. While studies suggest that n-3 PUFAs are able to modulate the gut microbiota, others show no effect of n-3 treatments on intestinal homeostasis. In the present work, we showed that when fed a hypercaloric and obsogenic diet, compared with wild-type (WT) mice, fat-1 mice (with constitutive production of n-3 PUFAs) resist to dietary obesity and associated metabolic disorders, maintain an effective gut barrier function and exhibit greater phylogenic diversity. Moreover, fecal microbiota transplantation from fat-1 to WT mice reversed body weight gain, normalized glucose tolerance and intestinal permeability in association with prevention of alteration of the colon mucus layer. We can conclude that the n-3 PUFA-mediated alterations of gut microbiota contribute to the prevention of metabolic syndrome in fat-1 mice and may represent a promising strategy to prevent metabolic disease and preserve a lean phenotype.
{"title":"Intestinal microbiota mediates the beneficial effects of n-3 polyunsaturated fatty acids during dietary obesity,","authors":"J. Bellenger, S. Bellenger, Amina Bourragat, Quentin Escoula, P. Weill, M. Narce","doi":"10.1051/OCL/2021006","DOIUrl":"https://doi.org/10.1051/OCL/2021006","url":null,"abstract":"Obesity, now considered as a real worldwide epidemic affecting more than 650 million people, is complex and mainly associated with excessive energy intake and changes in eating habits favoring the consumption of diets rich in saturated fat and sugar. This multifactorial pathology is linked to chronic low grade systemic inflammation. Indeed, a high fat diet (HFD) leads to intestinal microbiota dysbiosis increasing gut permeability (partly attributed to a downregulation of genes encoding tight junction proteins) leading to an increase in bacterial lipopolysaccharides (LPS) levels so-called metabolic endotoxemia. Studies have shown that n-3 polyunsaturated fatty acids (PUFAs) are involved in the prevention of obesity and insulin resistance partly through synthesis of lipid mediators. While studies suggest that n-3 PUFAs are able to modulate the gut microbiota, others show no effect of n-3 treatments on intestinal homeostasis. In the present work, we showed that when fed a hypercaloric and obsogenic diet, compared with wild-type (WT) mice, fat-1 mice (with constitutive production of n-3 PUFAs) resist to dietary obesity and associated metabolic disorders, maintain an effective gut barrier function and exhibit greater phylogenic diversity. Moreover, fecal microbiota transplantation from fat-1 to WT mice reversed body weight gain, normalized glucose tolerance and intestinal permeability in association with prevention of alteration of the colon mucus layer. We can conclude that the n-3 PUFA-mediated alterations of gut microbiota contribute to the prevention of metabolic syndrome in fat-1 mice and may represent a promising strategy to prevent metabolic disease and preserve a lean phenotype.","PeriodicalId":19440,"journal":{"name":"OCL","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89636843","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}
Bird damage to sunflowers (Helianthus annuus) degrades the profitability of this crop and calls into question its place in rotations. Our international literature review shows that sunflower is one of the crops most vulnerable to bird attacks. However, these predatory pests are not specialized: if the sunflower is affected in one region, then the other crops sharing the same cycle could also be affected to varying degrees. All production areas are affected by flowerhead damage at maturity. Damage at emergence has recently become more visible in France, Italy and Switzerland, probably as a result of global changes and evolving farming practices. Birds are highly mobile pests with complex behaviour. The problem needs to be tackled in a hierarchical framework that takes into account field, landscape, and regional scales, along with processes at different timescales from rapid field selection to long term demographic trends. Moreover, the distribution of damage is asymmetrical: few fields are affected, but with a high severity. At this time, there is no single effective method for preventing damage, and coordination at the landscape scale should be initiated to find potential solutions. Finally, there is a gap between theoretical and applied knowledge, even though initiatives in North America have helped to move research forward. These difficulties imply an integrated approach combining partially effective methods, the association of several stakeholders, and the coordination of several policies (agricultural, environmental, and recreational hunting or wildlife management). Additionally, data collection appears essential to acquire knowledge about economic damage and efficacy of control programmes. Digital technology can be useful for such purposes. Finally, this review advocates international networking to consolidate a research community on this topic and on the wider issue of bird damage to crops.
{"title":"Bird damage to sunflower: international situation and prospects","authors":"C. Sausse, Myriam Lévy","doi":"10.1051/OCL/2021020","DOIUrl":"https://doi.org/10.1051/OCL/2021020","url":null,"abstract":"Bird damage to sunflowers (Helianthus annuus) degrades the profitability of this crop and calls into question its place in rotations. Our international literature review shows that sunflower is one of the crops most vulnerable to bird attacks. However, these predatory pests are not specialized: if the sunflower is affected in one region, then the other crops sharing the same cycle could also be affected to varying degrees. All production areas are affected by flowerhead damage at maturity. Damage at emergence has recently become more visible in France, Italy and Switzerland, probably as a result of global changes and evolving farming practices. Birds are highly mobile pests with complex behaviour. The problem needs to be tackled in a hierarchical framework that takes into account field, landscape, and regional scales, along with processes at different timescales from rapid field selection to long term demographic trends. Moreover, the distribution of damage is asymmetrical: few fields are affected, but with a high severity. At this time, there is no single effective method for preventing damage, and coordination at the landscape scale should be initiated to find potential solutions. Finally, there is a gap between theoretical and applied knowledge, even though initiatives in North America have helped to move research forward. These difficulties imply an integrated approach combining partially effective methods, the association of several stakeholders, and the coordination of several policies (agricultural, environmental, and recreational hunting or wildlife management). Additionally, data collection appears essential to acquire knowledge about economic damage and efficacy of control programmes. Digital technology can be useful for such purposes. Finally, this review advocates international networking to consolidate a research community on this topic and on the wider issue of bird damage to crops.","PeriodicalId":19440,"journal":{"name":"OCL","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84521268","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}
This paper presents the results of a legume-based value chain analysis based on twenty-seven case studies in the H2020 LegValue project and discusses those relating to organic legume-based value chains. The analysis aims to illustrate the diversity of legume-based value chains and to discuss the conditions by which they can successfully meet the growing demand for legumes in the EU. The research is based on a qualitative survey of the value chain stakeholders in the case studies. Regarding organic legume-based value chains, the analysis reveals two types that depend on the stakeholder type at the launch of the value chain, the stakeholder’s primary objective in the chain, and the organic legume species involved. The first value chain type is launched by extension services with an aim of developing the organic production of a single legume species. The second type is launched by a stakeholder (processor or collector) acting further downstream in response to market demand for several legume species. A key success factor for these value chains is the ability of the launcher to ensure close coordination along the chain. To achieve this, several means and tools have been identified: the setting-up of a value chain development project, the implementation of contracting practices, production support programmes (technical assistance, financial support), and market support programmes (information sharing, regulation, facilitators).
{"title":"Analysis of EU legume value chains from the H2020 LegValue project: What insights for organic value chains?","authors":"Tiana Smadja, F. Muel","doi":"10.1051/OCL/2021005","DOIUrl":"https://doi.org/10.1051/OCL/2021005","url":null,"abstract":"This paper presents the results of a legume-based value chain analysis based on twenty-seven case studies in the H2020 LegValue project and discusses those relating to organic legume-based value chains. The analysis aims to illustrate the diversity of legume-based value chains and to discuss the conditions by which they can successfully meet the growing demand for legumes in the EU. The research is based on a qualitative survey of the value chain stakeholders in the case studies. Regarding organic legume-based value chains, the analysis reveals two types that depend on the stakeholder type at the launch of the value chain, the stakeholder’s primary objective in the chain, and the organic legume species involved. The first value chain type is launched by extension services with an aim of developing the organic production of a single legume species. The second type is launched by a stakeholder (processor or collector) acting further downstream in response to market demand for several legume species. A key success factor for these value chains is the ability of the launcher to ensure close coordination along the chain. To achieve this, several means and tools have been identified: the setting-up of a value chain development project, the implementation of contracting practices, production support programmes (technical assistance, financial support), and market support programmes (information sharing, regulation, facilitators).","PeriodicalId":19440,"journal":{"name":"OCL","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83868284","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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