Objective
The determination of oil in rapeseed by solvent extraction methods is being replaced by rapid, nondestructive methods based on nuclear magnetic resonance (NMR). Calibration of these methods can be conveniently made with rapeseed whose oil content is determined by a solvent method. Results given by 3 solvent methods have been compared in order to assign a common reference value for oil content required for NMR calibration. The provisional certified values for the oil content (expressed on dry matter) are as follows:
CRM 446 (low oil content): 42.5 (+/- 0.1)%;
CRM 447 (medium oil content): 45.3 (+/- 0.2)%;
CRM 448 (high oil content): 49.2 (+/- 0.2)%.
The price paid by seed-crushers directly depends on the oil content of rapeseed and it is therefore essential to have rapid and accurate methods that can be used in the factory situation. Oil content is also important for reasons connected with the Common Agricultural Policy (CAP).
Traditionally, oil in rapeseed has been determined by solvent extraction methods, slow and potentially hazardous procedures which are being replaced by rapid, non-destructive methods based on Nuclear Magnetic Resonance (NMR). Calibration of these methods can be conveniently made with rapeseed having an oil content determined by a solvent method. There are three similar solvent methods in use for different purposes, ISO and EEC methods and that of the trade association FOSFA. These methods differ in details which could give rise to small but significant systematic differences in the results.
The object of the work is to compare the results given by the three methods and, if possible, to assign a common reference value for oil content to three rapeseed reference materials required for NMR calibration.
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Programme(s)
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
3198 LC EUROPOORT-ROTTERDAM
Netherlands
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Participants (23)
2030 ANTWERPEN
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6300 GIESSEN
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92230 Gennevilliers
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67160 Wissembourg
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85354 Freising
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29200 BREST
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75001 Paris
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3002 AA ROTTERDAM
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76041 ROUEN
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EC3 London
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DA8 IDL Erith
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21107 Hamburg
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75231 Paris
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77871 MONTEREAU
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92110 Clichy
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26500 BOURG-LES-VALENCE
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3250 HAMELN
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26121 OLDENBURG
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4400 MÜNSTER
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KT22 7RY Leatherhead
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3200 AE SPIJKENISSE
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20355 Hamburg
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7000 STUTTGART
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