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Registros recuperados: 38
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Biogramm und Qualitätskennzahl Organic Eprints
Velimirov, Alberta.
The quality assessment and comparison of differently cultivated products still represents a problem. On the one hand “quality” comprises many, mostly target group oriented aspects, necessitating the application of relevant methods, on the other hand the interpretation of diviating results is not easy or suitable to corroborate cultivation dependent quality aspects systematically. Some scientists have already tried to tackle that problem and developed quality indices by integratig different quality parameters (BREDA 1973, HUBER et al. 1988, SCHULZ & KÖPKE 1997). The aim of this presentation is to reach a grafic and numeric interpretation of results obtained from different methods. Although organic quality research corresponds to the holistic...
Tipo: Conference paper, poster, etc. Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health.
Ano: 2003 URL: http://orgprints.org/2083/1/Velimirov%2D2003%2Dbiogramm_quality%2Dcount.pdf
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Cereal crop diversity: Implications for production and products Organic Eprints
This proceeding comprises papers based on oral and poster presentations at the COST860 - SUSVAR workshop on cereal crop diversity held in La Besse, France, 13-14 June 2006. The main aims of the SUSVAR network are to ensure stable and acceptable yields of good quality for low-input, especially organic, cereal production in Europe. This will be achieved by developing ways to increase and make use of crop diversity, by establishing methods for selecting varieties, lines and populations taking into account genotype-environment interactions and by establishing common methodology for variety testing where appropriate. The present workshop focused on ways to increase and make use of crop diversity from the production to the product. As crop diversity often is...
Tipo: Proceedings Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health Crop combinations and interactions Weed management Breeding; Genetics and propagation Biodiversity and ecosystem services Soil tillage.
Ano: 2006 URL: http://orgprints.org/10337/1/10337.pdf
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CEREALICOLTURA BIOLOGICA: INTERVENTI AGROTECNICI E GENETICI PER IL MIGLIORAMENTO QUANTI-QUALITATIVO DEL FRUMENTO DURO E TENERO E LA VALORIZZAZIONE DEI PRODOTTI DERIVATI Organic Eprints
In order to guarantee a suitable income to the farmers and respond to the consumers’ demand, European Commission has proposed new guidelines for the cultivation of cereals. Such proposal strictly depends on: previous decisions of the Community which didn’t give the expected results; the presence of new exporting countries on the international market; the variable cereal production of the last years. Being the new guidelines involving further economic sacrifices of the cereal farmers this project would become essential to recover a strong competitiveness on the international cereals' market. The competitiveness of cereal sector can be increased by innovative high quality varieties and the set up of suitable cultural techniques maximizing the germoplasm...
Tipo: Project description Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health Cereals; Pulses and oilseeds Farming Systems Breeding; Genetics and propagation.
Ano: 2020 URL: http://orgprints.org/6817/1/Boggini.ppt
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CRA - Istituto sperimentale per la Valorizzazione Tecnologica dei Prodotti Agricoli: laboratorio mobile per l'analisi sensoriale. Organic Eprints
Il laboratorio mobile, montato su camion Daily IVECO, è costituito da una stanza per analisi sensoriale con postazioni per 6 persone. L'automezzo inoltre ospita una cucina per la preparazione dei campioni da sottoporre ad analisi. Il laboratorio mobile di analisi sensoriale è stato progettato per l'utilizzo in aziende agricole, campi sperimentali, fiere e così via.
Tipo: Research facility description Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health.
Ano: 2020
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Die Bestimmung des Physiologischen Aminosäurenstatus von Möhren und Weizen zur Unterscheidung ökol. und konv. Anbauvarianten Organic Eprints
Stolz, P.; Strube, J..
A procedure for the differentiation and identification of organic versus conventional grown crop is described. The validated (ISO 17025) procedure is based on the precise Determination of the N-Metabolom of the cultivated plant. With this procedure it was possible to distinguish organically from conventionally grown crops.
Tipo: Conference paper, poster, etc. Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health Specific methods.
Ano: 2005 URL: http://orgprints.org/3774/1/3774.pdf
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Ecology of the ochratoxin A producing Penicillium verrucosum: Occurrence in field soil and grain with special attention to farming system and on-farm drying practices Organic Eprints
Elmholt, Susanne.
Mycotoxin contamination of organically grown cereals has been a growing concern during recent years, one of the most important being ochratoxin A (OTA). In countries with a temperate, humid climate, OTA is produced by Penicillium verrucosum and it is crucial to focus on the fungus to obviate problems. This paper presents results to elucidate different aspects of the ecology of P. verrucosum. In a survey of differently farmed soils, P. verrucosum was found in 11 out of 65 soils (35% of the organically and 7% of the conventionally cultivated), these being the first reports of its natural occurrence in soil. Except for two soils it was found with low frequencies (100-300 cfu g dry soil-1), and the results point to home grown seed as a potential risk of soil...
Tipo: Journal paper Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health "Organics" in general Farming Systems Production systems Soil biology.
Ano: 2003 URL: http://orgprints.org/21/1/21.pdf
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Effect of ascorbic acid and glutathione on the production of nitriles by myrosinase Organic Eprints
Bellostas, Natalia; Sorensen, Jens Christian; Sorensen, Hilmer.
Biofumigation is based on the use of glucosinolate-containing plants for the control of soil-borne pest and diseases. Upon tissue damage, glucosinolates are hydrolyzed by endogenous enzymes (myrosinase) and a range of biologically active compounds are formed. Isothiocyanates (ITCs) are the quantitatively dominating products formed at neutral pH. Most of these compounds are volatile and only sparingly soluble in aqueous systems, and depending on the R-group structure and the presence of nucleophiles, further transformation of ITCs occurs. At lower pH and in the presence of certain molecules able to deliver two redox equivalents, the proportion of nitriles increases at the expense of ITC. The effect of ascorbic acid and glutathione on the production of...
Tipo: Conference paper, poster, etc. Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health.
Ano: 2006 URL: http://orgprints.org/9263/1/9263.pdf
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Effect of organic and conventional crop production systems on food quality and safety Organic Eprints
Schmidt, Dr. Christoph S; Lueck, Dr. Lorna; Shotton, Peter; Seal, Dr. Chris J; Brandt, Dr. Kirsten; Leifert, Prof. Carlo.
A range of comparative studies have recently been carried out to compare the composition of foods produced in organic, “low input” and conventional production systems. This paper will review the currently available information on nutritional differences between organic and non-organic crops. It will also describe the Nafferton Factorial Systems Experiment which was established as part of the IP Quality-LowInputFood to study the effect (and interactions between) (a) rotational design, (b) fertility management and (c) crop protection regimes on crop quality and safety.
Tipo: Conference paper, poster, etc. Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health.
Ano: 2006 URL: http://orgprints.org/8099/1/SchmidtNutritional_quality_of_organic_food_%2D_Odense_2006r.pdf
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Einfluss von gentechnisch veränderten Pflanzen (GV Pflanzen) in der Schweizer Landwirtschaft Organic Eprints
Ob und wie weit gentechnisch veränderte Pflanzen (GV Pflanzen) zur Nachhaltigkeit landwirtschaftlicher Produktionssysteme in der Schweiz beitragen, wird zur Zeit in der Öffentlichkeit und unter Wissenschaftern intensiv diskutiert. Ziel dieses Projektes ist es, den Beitrag von GV Pflanzen zur Erreichung der Ziele der Schweizer Landwirtschafts- und Umweltpolitik abzuschätzen. Das Projekt wird die Auswirkungen von GV Pflanzen in konventionellen, integrierten und biologischen/extensiven Anbausystemen untersuchen. Dazu werden Szenarien neuartiger Anbausysteme (konventionell, integriert und biologisch/extensiv) entwickelt, welche den Anbau von GV Pflanzen einschliessen. Die Nachhaltigkeit traditioneller (ohne GV Pflanzen) und neuartiger (mit GV Pflanzen)...
Tipo: Project description Palavras-chave: Policy environments and social economy Crop health; Quality; Protection Food security; Food quality and human health Biodiversity and ecosystem services.
Ano: 2020
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Ergebnisse einer Studie zur Formulierung eines arteigenen Profils von Einkorn Organic Eprints
Müller, Karl-Josef.
29 Kultureinkornsorten (Triticum monococcum L.) wurden unter Anbaubedingungen des ökologischen Landbaus auf sandigen Böden in Norddeutschland mit Weizen, Emmer und Dinkel verglichen. Einkorn zeichnete sich durch intensiv hellgrünes, festes Stroh und seine filigrane Gestalt aus. Bei der Aussaat im Frühherbst war die Anzahl der Bestockungstriebe bis zu zweimal so hoch wie bei Weizen, die Wuchshöhe der lag dagegen in den frühen Stadien niedriger und das Ährenschieben erfolgte 1 bis 12 Tage später. Die besten Einkornproben erzielten einen Ertrag von 60-70 % der Ernteerträge von Dinkel. Der Beta-Carotin-Gehalt war mit 1-2 % der Trockenmasse zwei bis drei mal so hoch wie bei Hartweizen üblich. Der Proteingehalt sowie die Gehalte an den essentiellen Aminosäuren...
Tipo: Conference paper, poster, etc. Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2001 URL: http://orgprints.org/665/1/665%2Dmueller%2Dk%2Dj%2D2001%2Dwissenschaftstagung%2Deinkorn.pdf
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First results with the Gas Discharge Visualisation (GDV) method (Kirlian photography) to assess the inner Quality of apples Organic Eprints
Weibel, Franco P.; Saikov, Aleksander; Bigler, Christoph.
GDV technology can provide useful information for distinguishing healthy and stressed plants and, in some cases, it can provide useful information for distinguishing different varieties and rootstocks. It can also provide information for distinguishing fruits grown using different fertilization treatments. However, in our cases with fruit of very similar standard quality, we were not able to find complementary information to distinguish organically from conventionally grown apple fruit. Currently we are carrying out two larger and refined studies on just that topic with 5 conventional/ organic comparison pairs from harvests of two years.
Tipo: Conference paper, poster, etc. Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health.
Ano: 2005 URL: http://orgprints.org/7002/1/weibel%2D2005%2DPosterFQH_GDV.pdf
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Gehalte an Makro- und Mikroelementen sowie Zuckern in Möhren aus der biologisch-dynamischen und konventionellen landwirtschaftlichen Praxis Organic Eprints
Fleck, M.; von Fragstein, P.; Fleckenstein, J.; Haneklaus, S.; Hagel, I..
Mit dem Ziel, die Marktsituation für den Konsumenten hinsichtlich der Produktqualität zu beschreiben, wurden Proben von Speisemöhren des Anbaujahres 1996 aus der biologisch-dynamischen (n=57) und konventionellen (n=18) Praxis gesammelt. An den Möhren wurden Einzelrübengewicht, Trockenmasse, Mineralstoffe (P, K, Na, Ca, Mg, S, Fe, Zn, Mn, Cu, B, Pb, Cd) und Zuckergehalte (D-Glucose, D-Fructose, Saccharose) bestimmt. Wesentliches Differenzierungsmerkmal zwischen den Proben der beiden Anbausysteme war der Trockensubstanzgehalt, der bei den biologisch-dynamischen Möhren im Mittel um relativ 20% höher lag. Unter den Mengenelementen waren die Gehalte an Calcium, Magnesium, Natrium und Schwefel in den konventionellen Rüben z.T. beträchtlich niedriger, die...
Tipo: Conference paper, poster, etc. Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health Markets and trade Vegetables.
Ano: 2001 URL: http://orgprints.org/3863/1/fleck_et_al_2001b.pdf
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Geschmack- und gesundheitsrelevante Qualität von ökologisch angbauten Äpfeln: Eine 3jährige Feldvergleichsstudie mit standard- und ganzheitlichen Untersuchungsmethoden Organic Eprints
Weibel, Franco P.; Treutter, Dieter; Graf, Ursula; Häseli, Andi.
In a 3 years lasting field study with the ‘Golden Delicious’ cultivar, we compared fruits of 5 pairs of organic/integrated fruit farms. The orchards were similar in microclimate, soil conditions and planting system. To assess inner fruit quality we investigated at the beginning and at the end of cold storage: (i) standard parameters (firmness, sugar, malic acid., mineral content); (ii) sensorial quality by panel tests; (iii) health related components (23 phenolic compounds, nutritional fibres; vitamins); and (v) fruit «vitality quality» by holistic approaches (crystallisation in copper chloride, self degradation tests, feeding preference tests with laboratory rats). The most significant differences were found in year one of the study, and were by tendency...
Tipo: Conference paper, poster, etc. Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health Fruit and berries.
Ano: 2004 URL: http://orgprints.org/9100/1/Weibel%2Detal%2D2004%2DQual_Weinsberg_04.pdf
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Getreidebau Organic Eprints
Berg, Martin; Schenke, Holger; Eisele, Jons; Leisen, Edmund; Paffrath, Andreas.
Einleitung: Der Getreidebau war in der ersten Phase ein Schwerpunkt im Leitbetriebe-Projekt. Nicht zuletzt aufgrund sinkender Getreidepreise wurden in der Folge verstärkt Kulturen mit höherer Wertschöpfung als Getreide wie bspw. Feldgemüse oder Kartoffeln wissenschaftlich bearbeitet. Auf allen Leitbetrieben wird Getreide in unterschiedlich starkem Ausmaß angebaut. Bis heute werden Untersuchungen zur Sortenwahl bei Winterroggen, Winter- und Sommerweizen sowie Dinkel durchgeführt. Die auf Leitbetrieben durchgeführten Sortenversuche fließen in eine die Bundesländer übergreifende Auswertung ein, um auf Basis eines abgestimmten Grundsortiments fundierte Sortenempfehlungen erstellen zu können. Als zentrales Thema des Getreidebaus wurde die Frage der...
Tipo: Report chapter Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health Cereals; Pulses and oilseeds Weed management.
Ano: 2003 URL: http://orgprints.org/1221/2/1221%2Dberg%2Dm%2Det%2Dal%2D2003%2Dleitbetriebe%2Dgetreide.pdf
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Identifizierung von ökol. u. konv. Anbauvarianten bei DOK-Weizen mittels Fluoreszenz-Anregungs-Spektroskopie Organic Eprints
Strube, J.; Stolz, P..
At coded samples of wheat out of the DOK-trial of FiBL (Switzerland) it was possible to identify the organic and conventional grown variants. The method used was fluorescence-excitation-spectroscopy of whole samples. It was also possible to show differences between biodynamic and organic variants.
Tipo: Conference paper, poster, etc. Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health Specific methods.
Ano: 2005 URL: http://orgprints.org/3778/1/3778.pdf
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Influence of pH and type of myrosinase complex on the products obtained in the myrosinase catalysed hydrolysis of glucosinolates – a MECC study Organic Eprints
Bellostas, Natalia; Sørensen, Jens C.; Sørensen, Hilmer.
Environmental conditions, e.g. pH and the presence of Fe2+ are well known factors that influence the product profile of the myrosinase catalysed hydrolysis of glucosinolates. Depending on the plant genera, the species and tissue of origin myrosinase isoenzymes (thioglucohydrolase EC 3.2.1.147) have different characteristics in terms of MW, subunit composition and pI. However, the influence of these parameters on the outcome of glucosinolate hydrolysis has not been traditionally studied, which hinders the full exploitation of the catalytic potential of these enzymes. In the present experiments the effect of myrosinase type on the products obtained in the hydrolysis of glucosibarin was studied by MECC using two B. carinata myrosinase preparations differing...
Tipo: Conference paper, poster, etc. Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health.
Ano: 2007 URL: http://orgprints.org/11399/1/11399.pdf
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Innenbrand und Mineralstoffgehalte verschiedener Sorten Eis- und Kopfsalat aus biologisch-dynamischem Anbau Organic Eprints
Hagel, Dr. Ingo; Haneklaus, Prof. Dr. Silvia; Schnug, Prof. Dr. Ewald.
Im Salatkopf können die Blattränder Nekrosen (sog. Innenbrand) aufweisen. Dies steht in Zusammenhang mit einem unzureichenden Calcium Transport in die Blätter, da Ca als essentieller Baustein biologischer Membranen benötigt wird und Pektinsäure der Mittellamelle der Zelle zu Ca-Pektinat absättigt. Innenbrand kann bis zu Totalausfällen, einhergehend mit hohen Einnahmeverlusten führen. Die Ursache für diesen Qualitätsmangel liegt jedoch nicht in einem zu geringen Ca-Gehalt des Bodens, sondern u.a. in der Immobilität von Ca in der Pflanze, einem übermäßigen N-Angebot, einem zu schnellen Wachstum der Pflanze, ungünstigen Transpirationsbedingungen, empfindlichen Sorten sowie zu geringem Wurzelwerk. Offensichtlich werden bei der Züchtung neuer Sorten präventive...
Tipo: Conference paper, poster, etc. Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health Breeding; Genetics and propagation.
Ano: 2002 URL: http://orgprints.org/6274/1/Hagel_2002_Salat_DGQ.pdf
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Innenbrand und Mineralstoffgehalte verschiedener Sorten Eis- und Kopfsalat aus biologisch-dynamischem Anbau. Organic Eprints
Hagel, I.; Haneklaus, S.; Schnug, E..
Fazit Die Mineralstoffgehalte von 12 Sorten Eis- und Kopfsalat aus biologisch-dynamischem Anbau wiesen starke inverse Beziehung zu den ebenfalls sehr unterschiedlichen Kopfgewichten auf, da vermutlich das Wachstum von Kopf und Wurzeln nicht im Gleichgewicht steht. Innenbrand stand in starker Beziehung zu den Ca-Gehalten, wenn die Kopfgewichte in die Betrachtung einbezogen wurden. Speziell die biologisch-dynamische Züchtung sollte sowohl mit Blick auf den Innenbrand als auch die Nahrungsqualität nicht nur das Wachstum des oberirdischen sondern auch des unterirdischen Teils der Salatpflanze fördern.
Tipo: Conference paper, poster, etc. Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health Vegetables.
Ano: 2002 URL: http://orgprints.org/2272/1/2272%2Dhagel%2Di%2Det%2Dal%2D2002%2Dmoehren%2Ddgq.pdf
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Micellar electrokinetic capillary chromatography—Synchronous monitoring of substrate and products in the myrosinase catalysed hydrolysis of glucosinolates Organic Eprints
Bellostas, Natalia; Sorensen, Jens Christian; Sorensen, Hilmer.
A micellar electrokinetic capillary chromatography (MECC) method has been developed for monitoring the myrosinase catalysed hydrolysis of 2-hydroxy substituted glucosinolates and the simultaneous formation of the corresponding degradation products (oxazolidine-2-thiones (OZTs) and nitriles). Glucosibarin ((2R)-2-hydroxy-2-phenylethylglucosinolate) was chosen as the model glucosinolate owing to the difficulties in determining hydrolysis rates of this type of substrates in traditional UV-assays. The method was afterwards validated with glucobarbarin ((2S)-2-hydroxy-2-phenylethylglucosinolate) and progoitrin ((2R)-2-hydroxybut-3-enylglucosinolate). Aromatic glucosinolates without a 2-hydroxy group in their side chains, such as glucotropaeolin...
Tipo: Journal paper Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health.
Ano: 2006 URL: http://orgprints.org/9260/1/9260.pdf
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New methods for organic raspberry production in polyethylene tunnels Organic Eprints
Raspberries for the fresh market is a new and very profitable crop in Norway, and the production in polyethylene tunnels is increasing rapidly. In Norwegian organic production, the experience so far is that using tunnels is a prerequisite if growing for the fresh market. The project focuses on the major bottlenecks in organic tunnel production of raspberries. The project will develop methods for controlling the most damaging pests (raspberry beetle, aphids and mites) and methods for secure and efficient supply of organic nutrients in tunnels. The research on raspberry beetle is a co-operation with Sottish Crop Research Institute. An important task in this project is to extend the growing area for tunnel production further north, by utilizing the long...
Tipo: Research Programme description Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health Farm nutrient management Biodiversity and ecosystem services Greenhouses and coverings.
Ano: 2020 URL: http://orgprints.org/14970/1/Project_description_final.pdf
Registros recuperados: 38
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