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Andreas Schieber - One of the best experts on this subject based on the ideXlab platform.
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identification and quantification of caffeoylquinic acids and flavonoids from artichoke Cynara scolymus l heads juice and pomace by hplc dad esi ms n
Journal of Agricultural and Food Chemistry, 2004Co-Authors: Katrin Schutz, Dietmar R Kammerer, Andreas SchieberAbstract:A method for the identification and quantification of phenolic compounds from artichoke (Cynara scolymus L.) heads, juice, and pomace by HPLC with diode array and mass spectrometric detection was developed. Among the 22 major compounds, 11 caffeoylquinic acids and 8 flavonoids were detected. Quantification of individual compounds was carried out by external calibration. Apigenin 7-O-glucuronide was found to be the major flavonoid in all samples investigated. 1,5-Di-O-caffeoylquinic acid represented the major hydroxycinnamic acid, with 3890 mg/kg in artichoke heads and 3269 mg/kg in the pomace, whereas in the juice 1,3-di-O-caffeoylquinic acid (cynarin) was predominant, due to the isomerization during processing. Total phenolic contents of ∼12 g/kg on a dry matter basis revealed that artichoke pomace is a promising source of phenolic compounds that might be recovered and used as natural antioxidants or functional food ingredients. Keywords: Artichoke; Cynara scolymus L.; flavonoids; caffeoylquinic acids; H...
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identification and quantification of caffeoylquinic acids and flavonoids from artichoke Cynara scolymus l heads juice and pomace by hplc dad esi ms n
Journal of Agricultural and Food Chemistry, 2004Co-Authors: Katrin Schutz, Dietmar R Kammerer, Reinhold Carle, Andreas SchieberAbstract:A method for the identification and quantification of phenolic compounds from artichoke (Cynara scolymus L.) heads, juice, and pomace by HPLC with diode array and mass spectrometric detection was d...
Franck Bertolla - One of the best experts on this subject based on the ideXlab platform.
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clarifying the taxonomy of the causal agent of bacterial leaf spot of lettuce through a polyphasic approach reveals that xanthomonas Cynarae trebaol et al 2000 emend timilsina et al 2019 is a later heterotypic synonym of xanthomonas hortorum vauterin et al 1995
Systematic and Applied Microbiology, 2020Co-Authors: Lucas Moriniere, Alexandre Burlet, Emma R Rosenthal, Xavier Nesme, Perrine Portier, Carolee T Bull, Celine Lavire, Marion Fischerle Saux, Franck BertollaAbstract:Abstract Assessment of the taxonomy and diversity of Xanthomonas strains causing bacterial leaf spot of lettuce (BLSL), commonly referred to as Xanthomonas campestris pv. vitians, has been a long-lasting issue which held back the global efforts made to understand this pathogen. In order to provide a sound basis essential to its study, we conducted a polyphasic approach on strains obtained through sampling campaigns or acquired from collections. Results of a multilocus sequence analysis crossed with phenotypic assays revealed that the pathotype strain does not match the description of the nomenspecies provided by Brown in 1918. However, strain LMG 938 = CFBP 8686 does fit this description. Therefore, we propose that it replaces LMG 937 = CFBP 2538 as pathotype strain of X. campestris pv. vitians. Then, whole-genome based phylogenies and overall genome relatedness indices calculated on taxonomically relevant strains exhibited the intermediate position of X. campestris pv. vitians between closely related species Xanthomonas hortorum and Xanthomonas Cynarae. Phenotypic profiles characterized using Biolog microplates did not reveal stable diagnostic traits legitimizing their distinction. Therefore, we propose that X. Cynarae Trebaol et al. 2000 emend. Timilsina et al. 2019 is a later heterotypic synonym of X. hortorum, to reclassify X. campestris pv. vitians as X. hortorum pv. vitians comb. nov. and to transfer X. Cynarae pathovars in X. hortorum as X. hortorum pv. Cynarae comb. nov. and X. hortorum pv. gardneri comb. nov. An emended description of X. hortorum is provided, making this extended species a promising model for the study of Xanthomonas quick adaptation to different hosts.
Katrin Schutz - One of the best experts on this subject based on the ideXlab platform.
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identification and quantification of caffeoylquinic acids and flavonoids from artichoke Cynara scolymus l heads juice and pomace by hplc dad esi ms n
Journal of Agricultural and Food Chemistry, 2004Co-Authors: Katrin Schutz, Dietmar R Kammerer, Andreas SchieberAbstract:A method for the identification and quantification of phenolic compounds from artichoke (Cynara scolymus L.) heads, juice, and pomace by HPLC with diode array and mass spectrometric detection was developed. Among the 22 major compounds, 11 caffeoylquinic acids and 8 flavonoids were detected. Quantification of individual compounds was carried out by external calibration. Apigenin 7-O-glucuronide was found to be the major flavonoid in all samples investigated. 1,5-Di-O-caffeoylquinic acid represented the major hydroxycinnamic acid, with 3890 mg/kg in artichoke heads and 3269 mg/kg in the pomace, whereas in the juice 1,3-di-O-caffeoylquinic acid (cynarin) was predominant, due to the isomerization during processing. Total phenolic contents of ∼12 g/kg on a dry matter basis revealed that artichoke pomace is a promising source of phenolic compounds that might be recovered and used as natural antioxidants or functional food ingredients. Keywords: Artichoke; Cynara scolymus L.; flavonoids; caffeoylquinic acids; H...
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identification and quantification of caffeoylquinic acids and flavonoids from artichoke Cynara scolymus l heads juice and pomace by hplc dad esi ms n
Journal of Agricultural and Food Chemistry, 2004Co-Authors: Katrin Schutz, Dietmar R Kammerer, Reinhold Carle, Andreas SchieberAbstract:A method for the identification and quantification of phenolic compounds from artichoke (Cynara scolymus L.) heads, juice, and pomace by HPLC with diode array and mass spectrometric detection was d...
Lucas Moriniere - One of the best experts on this subject based on the ideXlab platform.
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clarifying the taxonomy of the causal agent of bacterial leaf spot of lettuce through a polyphasic approach reveals that xanthomonas Cynarae trebaol et al 2000 emend timilsina et al 2019 is a later heterotypic synonym of xanthomonas hortorum vauterin et al 1995
Systematic and Applied Microbiology, 2020Co-Authors: Lucas Moriniere, Alexandre Burlet, Emma R Rosenthal, Xavier Nesme, Perrine Portier, Carolee T Bull, Celine Lavire, Marion Fischerle Saux, Franck BertollaAbstract:Abstract Assessment of the taxonomy and diversity of Xanthomonas strains causing bacterial leaf spot of lettuce (BLSL), commonly referred to as Xanthomonas campestris pv. vitians, has been a long-lasting issue which held back the global efforts made to understand this pathogen. In order to provide a sound basis essential to its study, we conducted a polyphasic approach on strains obtained through sampling campaigns or acquired from collections. Results of a multilocus sequence analysis crossed with phenotypic assays revealed that the pathotype strain does not match the description of the nomenspecies provided by Brown in 1918. However, strain LMG 938 = CFBP 8686 does fit this description. Therefore, we propose that it replaces LMG 937 = CFBP 2538 as pathotype strain of X. campestris pv. vitians. Then, whole-genome based phylogenies and overall genome relatedness indices calculated on taxonomically relevant strains exhibited the intermediate position of X. campestris pv. vitians between closely related species Xanthomonas hortorum and Xanthomonas Cynarae. Phenotypic profiles characterized using Biolog microplates did not reveal stable diagnostic traits legitimizing their distinction. Therefore, we propose that X. Cynarae Trebaol et al. 2000 emend. Timilsina et al. 2019 is a later heterotypic synonym of X. hortorum, to reclassify X. campestris pv. vitians as X. hortorum pv. vitians comb. nov. and to transfer X. Cynarae pathovars in X. hortorum as X. hortorum pv. Cynarae comb. nov. and X. hortorum pv. gardneri comb. nov. An emended description of X. hortorum is provided, making this extended species a promising model for the study of Xanthomonas quick adaptation to different hosts.
María Dolores Curt - One of the best experts on this subject based on the ideXlab platform.
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Cynara cardunculus l as a biomass and multi purpose crop a review of 30 years of research
Biomass & Bioenergy, 2018Co-Authors: Jorge Gominho, Ana Lourenco, María Dolores Curt, Jesús Fernández, Helena PereiraAbstract:Abstract This review covers 30 years on cardoon (Cynara cardunculus L.); a perennial plant adapted to the Mediterranean climate conditions of low rainfall and hot dry summers. Its potential as a non-food agricultural crop for set-aside lands and the excellent biomass production created an enthusiastic research interest in this plant and its uses. The review starts with the plant morphology, ecology and development, followed by the agricultural aspects related to crop establishment and harvest, giving the available data on the production yields by biomass component, from small research plots to large-scale plantations. The biomass components are characterized regarding anatomical, chemical and physical properties in view of their use as feedstock for the different applications. The use of Cynara biomass for energy was assessed according to its fuel properties and performance under the various processes e.g. combustion, gasification and pyrolysis. Cynara seeds contain a linoleic acid rich oil that may be processed into a biodiesel with properties similar to commercial diesel. The production of biomethane and of ethanol were also studied with promising results. Cynara was tested as a fibre source for production of pulp and paper using different delignification processes (kraft, soda, ASAM and organosolvs) with good pulp yields and adequate physical and mechanical properties. More recently, the phytochemical and pharmacological activities of different compounds extracted from Cynara biomass are also being investigated. This plant is a good candidate to be grown in the dry lands of the Mediterranean region as a perennial field crop for multi-purposes and non-conventional uses.
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sewage sludge compost use in bioenergy production a case study on the effects on Cynara cardunculus l energy crop
Journal of Cleaner Production, 2014Co-Authors: A Lagbrotons, I Gomez, Jose Navarropedreno, A M Mayoral, María Dolores CurtAbstract:Abstract As energy obtained from biomass is expected to significantly contribute to the future renewable energy pool, knowledge regarding energy crops management is crucial in order to maximize productivity while establishing positive environmental synergies. In this sense, the application of waste materials as organic amendments represents an interesting option for the growth of energy crops in Mediterranean regions. This is the first three-year trial (2008–2011) that assesses the effect of different sewage sludge compost treatments, applied as basal dressing, on the productivity the energy crop Cynara cardunculus L. (Cynara). The experiment was conducted in Alicante (Southeastern Spain), testing four compost application rates: 0, 30, 50 and 70 t ha −1 . Cynara yields (dry basis) were higher in the 2010/11 comparatively with 2008/09 for aboveground biomass (2063 vs 1202 g m −2 ), seed yield (320 vs 153 g m −2 ), oil yield (81 vs 33 g m −2 ) and energy yield (37 vs 21 MJ m −2 ). Concerning fertilisation treatments, composted sludge exerted positive effects, mainly between 50 and 70 t ha −1 application rates, primarily improving the productivity of Cynara: aboveground biomass (2195 g m −2 ) and energy (38 MJ m −2 ) yields of plants amended with 70 t ha −1 were 68% higher than control plants, while seeds (308 g m −2 ) and oil yields (103 g m −2 ) increased by 40%. Therefore, the use of SSC enhanced Cynara's productivity (aboveground biomass and seeds yields primarily). The present research provides valuable data to growers and researchers interested in the maximization of environmental positive synergies (soil protection, waste reuse, bioenergy production), as a way to enhance the sustainability of Mediterranean agrosystems.
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industrial applications of Cynara cardunculus l for energy and other uses
Industrial Crops and Products, 2006Co-Authors: Jesús Fernández, María Dolores Curt, P L AguadoAbstract:This work gives an overview of traditional and alternative applications of Cynara cardunculus L. The traditional applications are the use of the blanched stalks as an edible vegetable and the use of the flowers as a rennet substitute to make cheese. Alternatively, C. cardunculus can be cultivated as an energy crop and be used for industrial purposes. As an energy crop it is grown using a perennial cultivation system especially developed for producing biomass. The valuable crop produced in this case is the whole aboveground biomass. Two types of products can be harvested: lignocellulosic biomass and oil seeds. Cynara lignocellulosic biomass is a solid biofuel that can be used directly for heating or for electric power generation. The seeds, due to their high oil content, can also be used for energy applications, for example, as raw materials for biodiesel production. In addition to the energy applications of the crop, other alternative applications, such as green forage for ruminants, paper pulp production and pharmacological active compounds extraction, are also discussed.
