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Bio-fortification and isotopic labelling of Se metabolites in onions and carrots following foliar application of Se and 77Se Organic Eprints
Kapolna, Emese; Laursen, Kristian Holst; Husted, Søren; Larsen, Erik H..
The aims were to bio-fortify onions by foliar application of selenium (Se) and to intrinsically label bioactive Se-metabolites in onion and carrot by enriched, stable77Se for use in human physiological studies. Onion bulbs and leaves were enriched in Se by repeated foliar spraying of 10 or 100 μg Se mL-1 solutions of sodium selenite (Se(IV)) or sodium selenate (Se(VI)). ICP-MS analysis of onion leaves and bulbs showed that the Se concentration was enhanced by up to a factor of approximately 50 and 200 in bulbs and leaves, respectively. HPLC-ICP-MS analysis of proteolytic plant extracts showed that foliar application of Se(IV) gave rise to bio-synthesis of a higher fraction of the desired organic Se species and was better tolerated by the plants than...
Tipo: Journal paper Palavras-chave: Food security; Food quality and human health Crop health; Quality; Protection.
Ano: 2011 URL: http://orgprints.org/19812/1/FOODCHEM-D-11-03087R1.pdf
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Discrimination of conventional and organic white cabbage from a long-term field trial study using untargeted LC-MS-based metabolomics Organic Eprints
Mie, Axel; Laursen, Kristian Holst; Aberg, K. Magnus; Forshed, Jenny; Lindahl, Anna; Thorup-Kristensen, Kristian; Olsson, Marie; Knuthsen, Pia; Larsen, Erik Huusfeldt; Husted, Søren.
The influence of organic and conventional farming practices on the content of single nutrients in plants is disputed in the scientific literature. Here, large-scale untargeted LC-MS-based metabolomics was used to compare the composition of white cabbage from organic and conventional agriculture, measuring 1,600 compounds. Cabbage was sampled in 2 years from one conventional and two organic farming systems in a rigidly controlled long-term field trial in Denmark. Using Orthogonal Projection to Latent Structures-Discriminant Analysis (OPLS-DA), we found that the production system leaves a significant (p = 0.013) imprint in the white cabbage metabolome that is retained between production years. We externally validated this finding by predicting the production...
Tipo: Journal paper Palavras-chave: Farming Systems Food security; Food quality and human health Crop health; Quality; Protection Farm nutrient management.
Ano: 2014 URL: http://orgprints.org/29054/1/Mie%202014%20Discrimination%20of%20conventional%20and%20organic%20white%20cabbage%20froma%20long-term%20field%20trial%20study%20using%20untargeted%20LC-MS-based%20metabolomics.pdf
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Effects of Cultivation Conditions for Apples on Growth Rates of Fruit Fly Larvae and Contents of Phenolics Organic Eprints
Brandt, Kirsten; Ejlersen, Astrid; Nørbæk, Rikke; Lindhard Petersen, Hanne.
Apples were grown with 3 different alleyway groundcover management strategies, providing a wide range of nutrient availabilities to the trees, spanning the ranges normally found in both conventional and organic orchards. These treatments had significant effects on both yields and incidence of fungal diseases. However, the differences in yields and disease incidence cancelled each other out, resulting in identical average yields of marketable fruit, as reported earlier (Lindhard Petersen & Bertelsen 2002). These results indicated that the composition of the fruit may also differ, and that this material is useful as a model for investigating how growth conditions influence the content of nutritionally relevant compounds, and thus may affect the...
Tipo: Conference paper, poster, etc. Palavras-chave: Fruit and berries Food security; Food quality and human health Crop health; Quality; Protection.
Ano: 2003 URL: http://orgprints.org/1588/1/Apples_and_fruit_flies.pdf
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Efficacy Evaluation of Selected Biorational Combinations in the Management of Tomato Blight Organic Eprints
Kamoga, Gerald; Mwine, Julius; Ssekyewa, Charles.
This experiment was conducted in Katabi Sub-county in Wakiso District. The study evaluated efficacy of selected biorational combinations in the management of tomato blight. These biorationals were picked from the locally used plant materials used as natural pesticides and fungicides. They included Carica papaya, Phytolacca dodecandra, Jatropha curcas, Capsella Bursa-pastoris and. Tephrosia vogelli. The major objective was to evaluate efficacy of Carica papaya, Phytolacca dodecandra, Jatropha curcas, Capsella Bursa-pastoris and. Tephrosia vogelli.against tomato blight. This research was guided by three major objectives that is; to determine the biorational combinations that reduces tomato bright to levels below economic injury thresholds, to establish...
Tipo: Conference paper, poster, etc. Palavras-chave: Crop combinations and interactions Food security; Food quality and human health Crop health; Quality; Protection.
Ano: 2018 URL: http://orgprints.org/33070/9/5%20Kamoga%20Gerald%20Article.pdf
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Einsatz und Etablierung von Raubmilben zur nachhaltigen Spinnmilbenkontrolle in der Sonderkultur Hopfen Organic Eprints
Die Gemeine Spinnmilbe Tetranychus urticae ist einer der beiden Hauptschädlinge des Kulturhopfens, zu dessen Kontrolle auf einem Großteil der Anbauflächen nicht nur in Deutschland, sondern europa- wie weltweit regelmäßig und meist rein prophylaktisch Akarizide eingesetzt werden. Die nachhaltige Spinnmilbenkontrolle durch etablierte Populationen von Raubmilben im Bestand, wie sie in Deutschland z.T. im Wein- oder Obstbau praktiziert wird, ist derzeit im Hopfen nicht möglich, da bei der Ernte die oberirdischen Pflanzenteile fast komplett vom Feld entfernt werden und somit keine brauchbaren Strukturen für eine Überwinterung der Nützlinge zur Verfügung stehen. Dass es in dieser Kultur jedoch möglich ist, über den Einsatz gezüchteter Raubmilben eine...
Tipo: Project description Palavras-chave: Food security; Food quality and human health Crop health; Quality; Protection.
Ano: 2023
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Einsatz und Etablierung von Raubmilben zur nachhaltigen Spinnmilbenkontrolle in der Sonderkultur Hopfen Organic Eprints
Jereb, Marina; Weihrauch, Florian.
In den Jahren 2013 bis 2015 wurden im Rahmen eines von der BLE geförderten Forschungsprojektes der Einsatz und die Etablierung von Raubmilben zur nachhaltigen Spinnmilbenkontrolle an fünf Versuchsstandorten im bayerischen Anbaugebiet Hallertau mit den autochthonen Raubmilben (a) Typhlodromus pyri und (b) Amblyseius andersoni sowie einer Mischung aus den allochthonen Raubmilbenarten (c) Phytoseiulus persimilis und Neoseiulus californicus untersucht. Im Fokus des Projektes stand die dauerhafte Ansiedlung der heimischen Art Typhlodromus pyri. Dafür wurden in den Fahrgassen Einsaaten von Rohrschwingel Festuca arundinacea, einer Grünlandmischung (BQDSM-2a) sowie Erdbeeren als Mischkultur angelegt. Im Zuge der drei-jährigen Forschungsarbeiten mit insgesamt 15...
Tipo: Report Palavras-chave: Food security; Food quality and human health Crop health; Quality; Protection.
Ano: 2016 URL: http://orgprints.org/30286/1/30286-12NA014-lfl-bayern-weihrauch-2016-spinnmilbenkontrolle-hopfen.pdf
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Growth and differentiation: Life processes in crops Organic Eprints
Bloksma, Joke; Huber, Machteld.
This booklet discusses two basic life processes in nature:growth and differentiation.It uses the examples of apples,carrots and wheat to illustrate how growers can recognize these processes and can take practical measures to correct the balance between them in order to optimize the quality of their products.Thinking in growth and differentiation has proved valuable in the support,offered to growers by the Louis Bolk Instituut. It also speculates about the possible significance of these processes for human health.
Tipo: Book Palavras-chave: Food security; Food quality and human health Crop health; Quality; Protection Cereals; Pulses and oilseeds Root crops Fruit and berries.
Ano: 2002 URL: http://orgprints.org/4202/1/4202.pdf
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Higher Antioxidant Activity, Total Flavonols, and Specific Quercetin Glucosides in Two Different Onion (Allium cepa L.) Varieties Grown under Organic Production: Results from a 6‑Year Field Study Organic Eprints
Ren, Feiyue; Reilly, Kim; Kerry, Joseph P; Gaffney, Michael; Hossain, Mohammad; Rai, Dilip K.
We carried out a 6-year study to assess the effect of conventional, organic, and mixed cultivation practices on bioactive compounds (flavonoids, anthocyanins) and antioxidant capacity in onion. Total flavonoids, total anthocyanins, individual flavonols, individual anthocyanins, and antioxidant activity were measured in two varieties (‘Hyskin’ and ‘Red Baron’) grown in a long-term split-plot factorial systems comparison trial. This is the first report of repeated measurements of bioactive content over an extensive time period in a single crop type within the same trial. Antioxidant activity (DPPH and FRAP), total flavonol content, and levels of Q 3,4′ D and Q 3 G were higher in both varieties under fully organic compared to fully conventional management....
Tipo: Journal paper Palavras-chave: Food security; Food quality and human health Crop health; Quality; Protection.
Ano: 2017
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Hintergrundbelastung und Abdriftsituationen bei Biorebbauparzellen: Untersuchungskampagne 2003/04 - Vorläufige Resultate Organic Eprints
Wyss, Gabriela; Seiler, Kurt.
Da noch nicht alle Ergebnisse vorliegen können die nachfolgenden Schlussfolgerungen nur für die bereits vorliegenden Resultate gezogen werden: · Alle auf den Biotrauben gemessenen Fungizidrückstände lagen durchschnittlich unter 0.01 mg/kg; ein Rückstandsbereich, der bei der Weinbereitung durch die Abtrennung des Tresters beim Rotwein und dem Abpressen beim Weisswein zu keinen Rückständen im Wein führen würden; · Biologisch bewirtschaftete, isoliert gelegene Parzellen (ab 100 m Abstand ) sind nicht von einer Hintergrundbelastung betroffen; · Bei Einhaltung der guten landwirtschaftlichen Praxis (gut gewartete und der Spritzsituation angepasste Applikationsgeräte, Abstimmung auf die Wettersituation) kann das Risiko einer direkten Abdrift sehr gering...
Tipo: Conference paper, poster, etc. Palavras-chave: Food security; Food quality and human health Crop health; Quality; Protection Viticulture.
Ano: 2004 URL: http://orgprints.org/2665/1/Wyss.g.%2D2004%2Dabdriftsituation%2Dweinbautagung.pdf
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Lagerfähigkeit und Inhaltsstoffe von Möhren aus der biologisch-dynamischen und konventionellen Praxis Organic Eprints
Fleck, Michael; Hagel, Ingo; Meier-Ploeger, Angelika.
Mit dem Ziel, die Marktsituation für den Verbraucher zu beschreiben, wurden Proben von Speisemöhren des Anbaujahres 1996 aus der biologisch-dynamischen und konventionellen landwirtschaftlichen Praxis gesammelt. Dabei zeichneten sich die biologisch-dynamischen Möhren durch weniger Weichfäule und Verdunkelung im Stresslagertest als die konventionellen aus und geringere Verluste nach 120-tägiger Lagerung unter Praxisbedingungen. Bei den Proben der biologisch-dynamischen Betriebe wurden höhere Trockensubstanzgehalte festgestellt sowie höhere Gehalte an Saccharose und Gesamtzucker; die Nitratwerte der DEMETER-Möhren lagen weit unter denjenigen der konventionellen.
Tipo: Conference paper, poster, etc. Palavras-chave: Post harvest management and techniques Food security; Food quality and human health Crop health; Quality; Protection.
Ano: 1998 URL: http://orgprints.org/1915/1/fleck_et_al._1998.pdf
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Metoder til at opnå stabile antibakterielle plantebaserede produkter med reproducerbar antibakteriel effekt og indhold af aktivstoffer Organic Eprints
Jensen, Martin; Grevsen, Kai; Hansen, Flemming.
This summary describes briefly th echallenges of how to obtain a reproducible prepration from Herbs and berries for use in i.e. meat products.
Tipo: Report Palavras-chave: Food security; Food quality and human health Crop health; Quality; Protection Post harvest management and techniques.
Ano: 2014 URL: http://orgprints.org/25748/7/25748.pdf
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Mykotoxine im Getreide: Wie vermeiden? Organic Eprints
Wyss, Gabriela.
Tipo: Book Palavras-chave: Food security; Food quality and human health Crop health; Quality; Protection Cereals; Pulses and oilseeds.
Ano: 2003 URL: http://orgprints.org/2697/1/wyss%2D2003%2Dmykotoxine%2Dim%2Dgetreide.pdf
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Nutritional Consequences of Using Organic Agricultural Methods in Developing Countries Organic Eprints
Brandt, Kirsten; Kidmose, Ulla.
In addition to improved yields, the use of organic methods can benefit the nutritional value of foods in several ways, compared with subsistence agriculture, and in some respects also when compared with the use of high-input conventional farming methods. The recycling of organic matter retards depletion of the soil and ensures that increases in yield are not offset by mineral deficiencies caused by unbalanced plant nutrition. City populations can use organic products to minimize their intake of pesticide residues and nitrate. Improved nutritional status of crops under low-input conditions can increase the contents of protein and vitamin A, but can also increase the contents of some anti-nutrients. Improved availability of firewood through agroforestry...
Tipo: Book chapter Palavras-chave: Food security; Food quality and human health Crop health; Quality; Protection Farming Systems.
Ano: 2003 URL: http://orgprints.org/1570/1/E5_21_05_00_samlet.pdf
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Økologisk kost og sundhed Organic Eprints
Brandt, Kirsten.
In 2000-2001 a review was produced on the topic "Organic food and human health", (http://www.agrsci.dk/foejo/DK/sider/pub/fojorap.html ). The review evaluated a large number of studies comparing the constituents of organic and conventional foods, as well as feeding studies comparing reproduction and health of animals fed with organic or conventional feed. Additionally studies on the connection between consumer values and food production systems were reviewed. The results showed that organic plant foods consistently contain more vitamin C, natural pesticides and higher dry weight percentage, less b-carotene, pesticide residues and protein, but the protein has a higher percentage of essential amino acids than in conventional plants. Organic animal...
Tipo: Conference paper, poster, etc. Palavras-chave: Food security; Food quality and human health Crop health; Quality; Protection Specific methods.
Ano: 2002 URL: http://orgprints.org/1704/1/oekokost_og_sundhed.pdf
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Optimierung der ökologischen Kartoffelproduktion Organic Eprints
Böhm, Herwart; Buchecker, Kirsten; Dresow, Jana; Dreyer, Wilfried; Landzettel, Christian; Mahnke-Plesker, Sylvia; Westhues, Franz.
Zusammenfassungen des Verbundvorhabens „Optimierung der ökologischen Kartoffelproduktion“ (FKZ 06 OE 125) "Aufarbeitung und Diskussion des aktuellen Wissens, Ableitung des weiteren Forschungsbedarfes unter Einbeziehung von Forschung, Beratung und Praxis". Ziel des Gesamtprojektes war es, einen Beitrag zur Weiterentwicklung und Optimierung des ökologischen Kartoffelanbaus zu leisten. Das Gesamtvorhaben bestand aus drei Projekten und wurde durch das Institut für Ökologischen Landbau koordiniert. Im Rahmen des Projektes wurden umfangreiche Literaturrecherchen, die neben produktionstechnischen Themen vor allem die Frage der Ausbildung des „Flavours“, d.h. des Geschmacks und Geruchs bei Kartoffeln sowie deren Beeinflussung durch anbautechnische Maßnahmen...
Tipo: Book Palavras-chave: Food security; Food quality and human health Crop health; Quality; Protection Root crops.
Ano: 2011 URL: http://orgprints.org/19415/1/19415%2D06OE125%2Dvti%2Dboehm%2D2011%2Doptimierung_kartoffelproduktion.pdf
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Organic food and health – a multigeneration animal experiment Organic Eprints
Brandt, Kirsten; Bügel, Susanne Højbjerg; Ritskes-Hoitinga, Merel; Frøsig, Lars.
The overall objective is to determine, if conventional and organic food products show differences in effects on animal physiology, of a type and magnitude, that indicates that such products will affect humans differently. The agricultural treatments used are: 1: An organic cultivation treatment, with low input of nutrients through animal manure and use of catch crops, and no pesticides. 2: A conventional cultivation system, with high input of nutrients through mineral fertiliser and intensive use of pesticides. 3: A combination of 1 and 2, with low input of nutrients, primarily animal manure, and intensive use of pesticides. The treatments will be established on two sites. Wheat, potatoes and oilseed rape will be produced in Foulum, and carrots,...
Tipo: Conference paper, poster, etc. Palavras-chave: Food security; Food quality and human health Crop health; Quality; Protection Specific methods.
Ano: 2003 URL: http://orgprints.org/1703/1/III_4.ppt
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Organic Food and Health: A new project to study the effects of plant cultivation methods (organic and conventional) on nutritional value, health and reproduction in an animal experiment Organic Eprints
Brandt, Kirsten; Nygaard Larsen, Hanne; Andersen, Jens-Otto; Mølgaard, Jens-Peter; Lauridsen, Charlotte; Jørgensen, Henry; Gundersen, Vagn; Larsen, Erik; Badsberg, Jens Henrik; Thorup-Kristensen, Kristian.
Many consumers believe that food from plants grown under certain conditions, such as organic agriculture, will benefit health more than conventional food. This cannot be determined simply by analysing the material, since our understanding of the connections between food components and health is still to imprecise for such a purpose. Rather than waiting until basic research provides the knowledge needed for this approach, in the spring of 2001 we have initiated a project to study physiological effects of plant quality directly, in an animal experiment. The following cultivation treatments are used to grow plants that are typical ingredients for a human diet (potato, mature peas, kale, spring wheat, oilseed rape, carrots and apples): 1. A model of a...
Tipo: Conference paper, poster, etc. Palavras-chave: Food security; Food quality and human health Crop health; Quality; Protection Specific methods.
Ano: 2001 URL: http://orgprints.org/1702/1/DARCOFposterhealthlille.pdf
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Pestizidspuren im Biowein. Kein Grund zur Panik, aber Anlass zum Handeln (1). Woher kommen die Verunreinigungen? (2). Wo liegt der Handlungsbedarf? (3) Organic Eprints
Wyss, Gabriela; Tamm, Lucius; Seiler, Kurt; Biedermann, Roger.
(1) Rückstände im Biowein! Ein Mediensturm im Bioweinglas wühlte im vergangenem Herbst die Schweiz auf, nachdem Spuren von Pestiziden nachgewiesen worden waren. Wie kommen die Spuren in den Biowein? Und wie hält man sie fern? "bio aktuell" informiert in einer dreiteiligen Artikelserie. Die Abdrift aus Nachbars Weinberg dürfte für Pestizidspuren im Biowein mitverantwortlich sein. Auch andere Kulturen haben mit diesem Problem zu kämpfen. Gerichtlich Abhilfe ist zwar möglich. Doch ein Jurist rät, es vorher auf die sanfte Tour zu versuchen. (2) Wenn auch noch einiges unklar bleibt, so viel ist sicher: Eine sorgfältige Weinbereitung, die IP und bio sauber trennt, kann entscheidend dazu beitragen, Bioweine frei zu halten von Pestizidrückständen. (3)...
Tipo: Journal paper Palavras-chave: Food security; Food quality and human health Crop health; Quality; Protection Viticulture.
Ano: 2001 URL: http://orgprints.org/2693/1/wyss_et_al%2D2001%2DbioaktueBiowein_dt.pdf
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Pestizidspuren im Biowein: Wie Riegel schieben und Ritzen stopfen? Organic Eprints
Wyss, Gabriela; Seiler, Kurt.
Im Jahr 2000 wurden Rückstände von Pestiziden in Schweizer Bioweinen nachgewiesen. Bio Suisse reagierte schnell auf den Schocker und startete eine gross angelegte Analysekampagne. Wie kommen Giftspuren in den Biowein? Und vor allem: Wie lassen sie sich vermeiden, welche Ritzen muss man stopfen? Das Amt für Lebensmittelkontrolle von vier Ostschweizer Kantonen und das FiBL legen einen neuen Untersuchungsbericht vor.
Tipo: Newspaper or magazine article Palavras-chave: Food security; Food quality and human health Crop health; Quality; Protection Viticulture.
Ano: 2008 URL: http://orgprints.org/28282/1/Artikel_Wyss_12_13.pdf
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Product quality as a function of light and nitrogene supply: contribute to a quality concept for organic agriculture? Organic Eprints
Athmann, Miriam; Fritz, Jürgen; Köpke, Ulrich.
For spring wheat and rocket lettuce, the influence of light intensity, N supply and fertilizer type on product quality was investigated. The quality assessment, based on morphological parameters, chemical compounds related to growth and differentiation, and image forming methods, is considered as an appropriate approach for Organic Agriculture.
Tipo: Conference paper, poster, etc. Palavras-chave: Food security; Food quality and human health Crop health; Quality; Protection.
Ano: 2011 URL: http://orgprints.org/23860/1/Athmann_FQH_abstract.doc
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