EN ISO 21415-3:2007
(Main)Wheat and wheat flour - Gluten content - Part 3: Determination of dry gluten from wet gluten by an oven drying method (ISO 21415-3:2006)
Wheat and wheat flour - Gluten content - Part 3: Determination of dry gluten from wet gluten by an oven drying method (ISO 21415-3:2006)
ISO 21415-3:2006 specifies a method for the determination of the dry gluten content from wet gluten obtained as specified in either ISO 21415-1 or ISO 21514-2. In this method, dry gluten is obtained from wet gluten by drying in an oven.
The method can also be used to determine the moisture content of the wet gluten.
Weizen und Weizenmehl - Glutengehalt - Teil 3: Bestimmung des Trockenglutens aus Feuchtgluten mittels Ofentrocknungsverfahren (ISO 21415-3:2006)
Dieser Teil der ISO 21415 legt ein Verfahren für die Bestimmung des Trockenglutengehaltes aus Feucht¬gluten fest, das entweder nach ISO 21415 1 oder nach ISO 21415 2 erhalten wurde. In diesem Verfahren wird Trockengluten aus Feuchtgluten durch Trocknen in einem Wärmeschrank erhalten.
Das Verfahren kann auch angewendet werden, um den Feuchtigkeitsgehalt des Feuchtglutens zu bestimmen.
Blé et farines de blé - Teneur en gluten - Partie 3: Détermination du gluten sec à partir du gluten humide par une méthode de séchage en étuve (ISO 21415-3:2006)
L'ISO 21415-3:2006 spécifie une méthode de détermination de la teneur en gluten sec à partir du gluten humide obtenu comme spécifié dans l'ISO 21415-1 ou dans l'ISO 21415-2. Dans la présente méthode, le gluten sec est obtenu à partir du gluten humide par séchage en étuve.
La méthode peut également être utilisée pour déterminer la teneur en eau du gluten humide.
Pšenica in pšenična moka - Vsebnost glutena - 3. del: Določevanje suhega glutena iz vlažnega glutena z metodo sušenja v pečici (ISO 21415-3:2006)
General Information
- Status
- Published
- Publication Date
- 20-Mar-2007
- Withdrawal Date
- 29-Sep-2007
- Technical Committee
- CEN/TC 338 - Cereal and cereal products
- Drafting Committee
- CEN/TC 338 - Cereal and cereal products
- Current Stage
- 6060 - Definitive text made available (DAV) - Publishing
- Start Date
- 21-Mar-2007
- Due Date
- 26-Oct-2006
- Completion Date
- 21-Mar-2007
Overview
EN ISO 21415-3:2007 (ISO 21415-3:2006) specifies a laboratory method for determining dry gluten content by drying a ball of wet gluten in an oven. Adopted by CEN as EN ISO 21415-3:2007, this standard is part of the ISO 21415 series on wheat and wheat flour - gluten content and is intended for routine quality control and testing in cereal and flour laboratories. The method can also be used to determine the moisture content of wet gluten.
Key topics and requirements
- Scope: Converts wet gluten (obtained according to ISO 21415-1 or ISO 21415-2) to dry gluten by oven drying and expresses results as percent of the original sample.
- Apparatus: Typical lab equipment including scalpel/knife, metal or glass plate (5 cm × 5 cm), oven controllable at 130 °C ± 2 °C, desiccator with desiccant, and a balance accurate to 0.01 g.
- Procedure essentials:
- Weigh plate and wet gluten (to 0.01 g).
- Dry in oven at 130 °C: initial 2 h, make several deep incisions, then continue for another 4 h (total 6 h).
- Cool in a desiccator, reweigh and calculate dry gluten and water content.
- Calculations: Dry gluten content is reported as a mass fraction (%) of the original flour/sample. The method also includes formulae to correct results on a dry-matter basis and to calculate water content of the wet gluten.
- Precision:
- Repeatability: typical limit r ≈ 0.6 g/100 g (two single tests in same lab).
- Reproducibility: R ≈ 3.1 g/100 g (starting from manual wet gluten) or R ≈ 2.3 g/100 g (starting from mechanical wet gluten).
- Precision results are supported by an interlaboratory study cited in the standard.
Applications and users
- Who uses it: cereal and flour testing laboratories, milling and baking industry QC teams, ingredient suppliers, research labs, regulatory and conformity assessment bodies.
- Practical uses:
- Quantifying gluten for product specification, quality grading and process control.
- Supporting labeling and regulatory compliance where gluten content or gluten-related moisture data are required.
- Correlating wet-gluten measurements (from ISO 21415-1/2) with dry gluten for formulation and ingredient management.
- Determining moisture content of wet gluten as part of ingredient quality checks.
Related standards
- ISO 21415-1 - Determination of wet gluten by a manual method
- ISO 21415-2 - Determination of wet gluten by mechanical means
- ISO 21415-4 - Rapid drying method for dry gluten determination
- ISO 712 - Determination of moisture in cereal products (referenced for dry-matter correction)
- ISO 5725 - Precision of measurement methods (interlaboratory/statistics)
Keywords: EN ISO 21415-3:2007, ISO 21415-3:2006, dry gluten, wet gluten, oven drying method, wheat, wheat flour, gluten content, moisture content, CEN, laboratory method.
Frequently Asked Questions
EN ISO 21415-3:2007 is a standard published by the European Committee for Standardization (CEN). Its full title is "Wheat and wheat flour - Gluten content - Part 3: Determination of dry gluten from wet gluten by an oven drying method (ISO 21415-3:2006)". This standard covers: ISO 21415-3:2006 specifies a method for the determination of the dry gluten content from wet gluten obtained as specified in either ISO 21415-1 or ISO 21514-2. In this method, dry gluten is obtained from wet gluten by drying in an oven. The method can also be used to determine the moisture content of the wet gluten.
ISO 21415-3:2006 specifies a method for the determination of the dry gluten content from wet gluten obtained as specified in either ISO 21415-1 or ISO 21514-2. In this method, dry gluten is obtained from wet gluten by drying in an oven. The method can also be used to determine the moisture content of the wet gluten.
EN ISO 21415-3:2007 is classified under the following ICS (International Classification for Standards) categories: 67.060 - Cereals, pulses and derived products. The ICS classification helps identify the subject area and facilitates finding related standards.
EN ISO 21415-3:2007 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
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01-julij-2007
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Wheat and wheat flour - Gluten content - Part 3: Determination of dry gluten from wet
gluten by an oven drying method (ISO 21415-3:2006)
Weizen und Weizenmehl - Glutengehalt - Teil 3: Bestimmung des Trockenglutens aus
Feuchtgluten mittels Ofentrocknungsverfahren (ISO 21415-3:2006)
Blé et farines de blé - Teneur en gluten - Partie 3: Détermination du gluten sec a partir du
gluten humide par une méthode de séchage en étuve (ISO 21415-3:2006)
Ta slovenski standard je istoveten z: EN ISO 21415-3:2007
ICS:
67.060 äLWDVWURþQLFHLQSURL]YRGLL] Cereals, pulses and derived
QMLK products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 21415-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2007
ICS 67.060
English Version
Wheat and wheat flour - Gluten content - Part 3: Determination
of dry gluten from wet gluten by an oven drying method (ISO
21415-3:2006)
Blé et farines de blé - Teneur en gluten - Partie 3: Weizen und Weizenmehl - Glutengehalt - Teil 3:
Détermination du gluten sec à partir du gluten humide par Bestimmung des Trockenglutens aus Feuchtgluten mittels
une méthode de séchage en étuve (ISO 21415-3:2006) Ofentrocknung (ISO 21415-3:2006)
This European Standard was approved by CEN on 25 February 2007.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 and United Kingdom.
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EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21415-3:2007: E
worldwide for CEN national Members.
Foreword
The text of ISO 21415-3:2006 has been prepared by Technical Committee ISO/TC 34
"Agricultural food products” of the International Organization for Standardization (ISO) and has
been taken over as EN ISO 21415-3:2007 by Technical Committee CEN/TC 338 "Cereal and
cereal products", the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by September 2007, and conflicting national
standards shall be withdrawn at the latest by September 2007.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Bulgaria, 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 and United
Kingdom.
Endorsement notice
The text of ISO 21415-3:2006 has been approved by CEN as EN ISO 21415-3:2007 without any
modifications.
INTERNATIONAL ISO
STANDARD 21415-3
First edition
2006-05-01
Wheat and wheat flour — Gluten
content —
Part 3:
Determination of dry gluten from wet
gluten by an oven drying method
Blé et farines de blé — Teneur en gluten —
Partie 3: Détermination du gluten sec à partir du gluten humide par une
méthode de séchage en étuve
Reference number
ISO 21415-3:2006(E)
©
ISO 2006
ISO 21415-3:2006(E)
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ISO 21415-3:2006(E)
Contents Page
Foreword. iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 1
4 Principle. 1
5 Apparatus . 2
6 Procedure . 2
6.1 Test portion . 2
6.2 Determination. 2
7 Calculation and expression of results. 2
7.1 Calculation of the dry gluten content . 2
7.2 Calculation of water content of the wet gluten.3
8 Precision. 3
8.1 Interlaboratory tests . 3
8.2 Repeatability. 3
8.3 Reproducibility. 3
9 Test report . 4
Annex A (informative) Results of an interlaboratory test. 5
Bibliography . 6
ISO 21415-3:2006(E)
Foreword
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