I.S. EN 14177:2004
Current
The latest, up-to-date edition.
FOODSTUFFS - DETERMINATION OF PATULIN IN CLEAR AND CLOUDY APPLE JUICE AND PUREE - HPLC METHOD WITH LIQUID/LIQUID PARTITION CLEANUP
Hardcopy , PDF
English
01-01-2004
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents
4.1 General
4.2 Sodium carbonate solution, mass concentration
rho(Na[2]CO[3]) approx. 15 g/l
4.3 Acetic acid, volume concentration phi(CH[3]COOH)
approx. 98%
4.4 Sodium sulfate anhydrous
4.5 pH 4 water
4.6 Absolute ethanol, phi(CH[3]CH[2]OH) >= 99,7%
4.7 Ethyl acetate
4.8 Perchloric acid, phi(HclO[4]) = 60%
4.9 Acetonitrile
4.10 Endogalacturonase enzyme solution, typical activity
1 400 U/g
4.11 HPLC mobile phase
4.12 Patulin stock solution
4.13 Patulin standard solution
4.14 Patulin standard solution for calibration
5 Apparatus
5.1 General
5.2 Displacement pipettes of 5 ml, 1 ml, 200 micro l and
50 micro l capacity with appropriate pipette tips
5.3 Analytical balance
5.4 UV spectrophotometer, double beam and recording suitable
for measurement at 250 nm to 350 nm
5.5 Quartz cells, of optical path length 1 cm
5.6 Centrifuge, capable of operating at 4 500 g
5.7 Centrifuge tubes of 50 ml capacity with screw cap lids
5.8 Rotary evaporator, with water bath set at 40 degree C
5.9 Filter paper, with pore size 20 micro m to 25 micro m
5.10 Disposable syringe filters, of 0,2 micro m pore size
(optional)
5.11 HPLC apparatus, comprising the following
5.12 Round bottom flasks, of 250 ml capacity with ground
glass joint
6 Procedure
6.1 Preparation of test samples
6.2 Extraction of patulin
6.3 Removal of interfering acidic compounds
6.4 Preparation of the sample test solution
7 Spiking procedure
7.1 Clear apple juice
7.2 Cloudy apple juice
7.3 Apple puree
8 HPLC determination
8.1 Calibration graph
8.2 HPLC operating conditions
9 Calculation
10 Precision
10.1 Interlaboratory test
10.2 Repeatability
10.3 Reproducibility
10.4 Test report
Annex A (informative) Precision data
Bibliography
Defines a method for the determination of patulin in apple juices and apple puree using high performance liquid chromatography (HPLC).
DocumentType |
Standard
|
Pages |
17
|
PublisherName |
National Standards Authority of Ireland
|
Status |
Current
|
Standards | Relationship |
UNE-EN 14177:2004 | Identical |
UNI EN 14177 : 2004 | Identical |
BS EN 14177:2003 | Identical |
DIN EN 14177:2004-03 | Identical |
EN 14177:2003 | Identical |
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