INHALT

First Commission Directive 79/796/EEC of 26 July 1979 laying down Community methods of analysis for testing certain sugars intended for human consumption

FIRST COMMISSION DIRECTIVE
of 26 July 1979
Laying down Community methods of analysis for testing certain sugars intended for human consumption
(79/786/EEC)
Article 1
Article 2
Article 3
ANNEX I
SCOPE OF TOE COMMUNITY METHODS OF ANALYSIS FOR CERTAIN SUGARS INTENDED FOR HUMAN CONSUMPTION
ANNEX II
METHODS OF ANALYSIS TO VERIFY THE COMPOSITION OF CERTAIN SUGARS INTENDED FOR HUMAN CONSUMPTION
INTRODUCTION
1.
Preparation of the sample for analysis
2.
Reagents and apparatus
3.
Expression of results
METHOD 1
DETERMINATION OF THE LOSS OF MASS ON DRYING
1.
Scope and field of application
2.
Definition
3.
Principle
4.
Apparatus
5.
Procedure
6.
Expression of results
6.1.
Formula and method of calculation
6.2.
Repeatability
METHOD 2
DETERMINATION OF DRY MATTER
Vacuum oven method
1.
Scope and field of application
2.
Definition
3.
Principle
4.
Reagents
5.
Apparatus
6.
Procedure
7.
Expression of results
7.1.
Formula and method of calculation
7.2.
Repeatability
METHOD 3
DETERMINATION OF TOTAL DRY MATTER
(Refractometric method)
1.
Scope and field of application
2.
Definition
3.
Principle
4.
Apparatus
5.
Procedure
6.
Expression and calculation of results
METHOD 4
MEASUREMENT OF REDUCING SUGARS EXPRESSED AS INVERT SUGARS
(Berlin Institute method)
Scope and field of application
2.
Definitions
3.
Principle
4.
Reagents
5.
Apparatus
6.
Procedure
7.
Expression of results.
7.1.
Formula and method of calculation
7.2.
Repeatability
METHOD 5
MEASUREMENT OF REDUCING SUGARS EXPRESSED AS INVERT SUGAR
(Knight and Allen method)
1.
Scope and field of application
2.
Definition
3.
Principle
4.
Reagents
5.
Apparatus
6.
Procedure
7.
Expression of results
8.
Note
METHOD 6
DETERMINATION OF REDUCING SUGARS EXPRESSED AS INVERT SUGAR OR DEXTROSE EQUIVALENT
(Luff-Schoorl method)
1.
Scope and field of application
2.
Definition
3.
Principle
4.
Reagents
5.
Apparatus
6.
Procedure
7.
Expression of results
7.1.
Formula and method of calculation
7.2.
Repeatability
8.
Note
METHOD 7
MEASUREMENT OF REDUCING SUGARS EXPRESSED AS INVERT SUGAR
(Lane and Eynon constant volume modification)
1.
Scope and field of application
2.
Definition
3.
Principle
4.
Reagents
5.
Apparatus
6.
Procedure
6.1.
Standardization of Fehling's solution
6.2.
Preparation of sample solutions
6.3.
Preliminary test
6.4.
Final analysis of sample solution
7.
Expression of results
7.1.
Formula and method of calculation
7.2.
Repeatability
8.
Note
METHOD 8
DETERMINATION OF DEXTROSE EQUIVALENT
(Lane and Eynon constant)
1.
Scope and field of application
2.
Definition
3.
Principle
4.
Reagents
4.1.
Fehling's solution:
4.2.
Anhydrous dextrose
(D-glucose) (C
6
H
12
O
6
)
4.3.
Standard dextrose solution,
0·600 g/100 ml
4.4.
Methylene blue solution,
0·1 g/100 ml
5.
Apparatus
6.
Procedure
6.1.
Standardization of the Fehling's solution
6.2.
Preliminary examination of the prepared sample
6.3.
Test portion
6.4.
Test solution
6.5.
Determination
6.6.
Dry matter content
7.
Expression of results
7.1.
Formulae and method of calculation
7.2.
Repeatability
METHOD 9
DETERMINATION OF SULPHATED ASH
1.
Scope and field of application
2.
Definition
3.
Principle
4.
Reagents
5.
Apparatus
6.
Procedure
7.
Expression
7.1.
Formula and method of calculation
7.2.
Repeatability
8.
Notes
METHOD 10
DETERMINATION OF POLARIZATION
1.
Scope and field of application
2.
Definition
3.
Principle
4.
Reagents
5.
Apparatus
6.
Procedure
6.1.
Preparation of the solution
6.2.
Polarization
7.
Expression of results
7.1.
Formula and method of calculation
7.2.
Repeatability