EN 15948:2012

Cereals - Determination of moisture and protein - Method using Near-Infrared-Spectroscopy in whole kernels

This European Standard defines a routine method for the determination of moisture and protein in whole kernels of barley and wheat using a near-infrared spectrophotometer in the constituent ranges:
for wheat:
-   moisture content minimum from 8 % to 22 %;
-   protein content minimum from 7 % to 20 %.
for barley:
-   moisture content minimum from 8 % to 22 %;
-   protein content minimum from 7 % to 16 %.
This European Standard describes the modalities to be implemented by the supplier (5.3 and 5.4) and the user of the method.

Getreide - Bestimmung der Feuchte und des Proteins - Verfahren der Nahinfrarot-Spektroskopie bei ganzen Körnern

Diese Europäische Norm legt ein routinemäßiges Verfahren für die Bestimmung der Feuchte und des Proteins in ganzen Gersten  und Weizenkörnern unter Anwendung eines Nahinfrarot-Spektrophotometers in den folgenden Bestandteilbereichen fest:
Für Weizen:
-   Feuchtegehalt mindestens von 8 % bis 22 %;
-   Proteingehalt mindestens von 7 % bis 20 %.
Für Gerste:
-   Feuchtegehalt mindestens von 8 % bis 22 %;
-   Proteingehalt mindestens von 7 % bis 16 %.
In der vorliegenden Europäischen Norm sind die Modalitäten beschrieben, die vom Lieferanten (5.3 und 5.4) und vom Anwender des Verfahrens umzusetzen sind.

Céréales - Détermination de la teneur en eau et en protéines - Méthode utilisant la spectroscopie dans le proche infrarouge sur des grains entiers

La présente norme européenne définit une méthode de routine pour la détermination de la teneur en eau et
en protéines dans des grains entiers d'orge et de blé, à l'aide d'un spectromètre proche infrarouge, dans les
plages suivantes :
pour le blé :
- teneur en eau comprise dans une plage minimum de 8 % à 22 % ;
- teneur en protéines comprise dans une plage minimum de 7 % à 20 %.
pour l'orge :
- teneur en eau comprise dans une plage minimum de 8 % à 22 % ;
- teneur en protéines comprise dans une plage minimum de 7 % à 16 %.
La présente Norme européenne décrit les modalités à mettre en oeuvre par le fournisseur (5.3 et 5.4) et par
l'utilisateur de la méthode.

Žito - Določanje vlage in beljakovin - Metoda z uporabo bližnje infrardeče spektroskopije v celih zrnih

Ta evropski standard določa rutinsko metodo za določanje vlage in beljakovin v celih zrnih ječmena in pšenice z bližnjim infrardečim spektrometrom v razponu sestavin, in sicer za pšenico: – minimalni obseg vsebnosti vlage od 8 % do 22 %, – minimalni obseg vsebnosti beljakovin od 7 % do 20 %; za ječmen: – minimalni obseg vsebnosti vlage od 8 % do 22 %, – minimalni obseg vsebnosti beljakovin od 7 % do 16 %. Ta evropski standard opisuje modalitete, ki jih morata izvesti dobavitelj (točki 5.3 in 5.4) in uporabnik metode.

General Information

• Status: Withdrawn
• Publication Date: 06-Mar-2012
• Withdrawal Date: 07-Apr-2015
• ICS: 67.060 - Cereals, pulses and derived products
• Technical Committee: CEN/TC 338 - Cereal and cereal products
• Drafting Committee: CEN/TC 338/WG 9 - NIR-ANN methods for cereals
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 08-Apr-2015
• Ref Project: SIST EN 15948:2012 - Cereals - Determination of moisture and protein - Method using Near-Infrared-Spectroscopy in whole kernels

Relations

• Replaced By: EN 15948:2015 - Cereals - Determination of moisture and protein - Method using Near-Infrared-Spectroscopy in whole kernels
• Effective Date: 15-Apr-2015

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.QIUDUGHþHGetreide - Bestimmung der Feuchte und des Proteins - Verfahren der Nahinfrarot-Spektroskopie bei ganzen KörnernCéréales - Détermination de la teneur en eau et en protéines - Méthode utilisant la spectroscopie dans le proche infrarouge sur des grains entiersCereals - Determination of moisture and protein - Method using Near-Infrared-Spectroscopy in whole kernels67.060QMLKCereals, pulses and derived productsICS:Ta slovenski standard je istoveten z:EN 15948:2012SIST EN 15948:2012en,fr,de01-september-2012SIST EN 15948:2012SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15948
March 2012 ICS 67.060 English Version
Cereals - Determination of moisture and protein - Method using Near-Infrared-Spectroscopy in whole kernels
Céréales - Détermination de la teneur en eau et en protéines - Méthode utilisant la spectroscopie dans le proche infrarouge sur des grains entiers
Getreide - Bestimmung der Feuchte und des Proteins - Verfahren der Nahinfrarot-Spektroskopie bei ganzen Körnern This European Standard was approved by CEN on 28 January 2012.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15948:2012: ESIST EN 15948:2012

Results of an example of interlaboratory test . 11Annex B (informative)
Validation of ANN prediction model WB003034 . 16Bibliography . 20 SIST EN 15948:2012

EN ISO 12099:2010, Animal feeding stuffs, cereals and milled cereal products — Guidelines for the application of near infrared spectrometry (ISO 12099:2010) ISO 5725-2, Accuracy (trueness and precision) of measurement methods and results — Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 12099:2010 apply. 4 Principle The method is based on Near-Infrared (NIR) spectroscopy, an indirect, correlative technique to predict the concentration of various constituents in organic samples. Linear or nonlinear regression modelling is used to relate NIR spectra to moisture or protein concentrations determined by officially approved standard methods (e.g. artificial neural network-ANN, Partial Least Square Regression –PLS). 5 Method of analysis 5.1 General According to this document, the method of analysis is defined as the association between a NIR instrument and a model of prediction. SIST EN 15948:2012

Moisture Wheat and barley Protein Wheat Protein Barley Overall accuracy expressed as SEP as constituent % w/w 0,24 % 0,27 % 0,27 % Constituent concentration in the independent validation data set Min 8,0 % 7 % d.m. 7 % d.m. Max 22 % 20 % d.m. 16 % d.m.
NOTE The minimum performance given in Table 1 includes the variation of reference data as documented by the number of reference labs involved, regional and genetic variations, the number of countries and crop species involved and the robustness over the last five years (see also Annex B). 5.5 Update of calibration model and validation of new model The prediction model in accordance with this standard shall be updated by the one issuing the calibration model to ensure inclusion of new climatic crop conditions and new varieties introduced on the market. These updates shall be made by keeping the original database with addition of the new samples as needed. The new prediction model shall be updated according to EN ISO 12099. Validation shall be made according to the initial validation (5.3) and include at least 20 new samples. 6 Sampling Sampling is not part of the method specified in this European Standard. A recommended sampling procedure is given in EN ISO 24333 [2]. It is important that the sample analyzed in routine is truly representative for the batch and has not been damaged or modified. 7 Procedure 7.1 Preparation of the test sample No specific sample preparation is required. 7.2 Measurement Follow the instructions of the instrument manufacturer. 7.3 Local validation of the method Before use, the method shall be validated on an independent test set that is representative of the sample population to be analyzed. For the determination of bias, at least 10 samples are needed; for the determination of Standard Error of Prediction (SEP, see EN ISO 12099:2010, Clause 6.5) at least 20 samples SIST EN 15948:2012
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