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BS EN ISO 6647-2:2020

BS EN ISO 6647-2:2020

$102.76

Rice. Determination of amylose content – Spectrophotometric routine method without defatting procedure and with calibration from rice standards

Published By Publication Date Number of Pages
BSI 2020 18
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This document specifies two simplified routine methods for the determination of the amylose mass fraction of milled rice, non-parboiled. The main difference between the two methods is the dispersion procedure: method A specifies hot dispersion, and method B specifies cold dispersion.

Both methods are applicable to rice with an amylose mass fraction higher than 5 %.

NOTE

These methods describe simplified procedures for the preparation of samples, which are frequently used in routine laboratories. The methods use the same reagents as the reference method (see ISO 6647-1 ), but omit the defatting step. Rice samples where the amylose mass fraction has been determined by the reference method are used as standards.

PDF Catalog

PDF Pages PDF Title
2 undefined
6 Foreword
7 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
8 5 Reagents
6 Apparatus
9 7 Sampling
8 Procedure
8.1 Determination of moisture
8.2 Preparation of test sample
8.3 Test portion and preparation of the test solution
8.4 Preparation of the blank solution
10 8.5 Preparation of the calibration graph
8.5.1 Preparation of the set of calibration solutions
8.5.2 Colour development and spectrophotometric measurements
8.5.3 Plotting the calibration graph
8.6 Determination
9 Expression of results
11 10 Precision
10.1 Interlaboratory test
10.2 Repeatability
10.3 Reproducibility
12 11 Test report
13 Annex A (informative) Results of an interlaboratory test for the routine method
17 Bibliography

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BS EN ISO 6647-2:2020
$102.76