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Soxtec™ 2050 Automatic System
8 FOSS Analytical AB Application
Notes System
For information about preparation of chemicals and the Soxtec method, please see
the Application Note AN 305 supplied with your system.
In Foss Analytical's extensive list of Application Sub Notes you will find information
on how to analyse the sample of your choice. Please contact your FOSS Analytical
AB representative for further details.
Date issued:
2005-03-01
Revision:
4.1
Extraction of fat in Barley using Soxtec extraction systems
Sample preparation
Grind the sample by using a suitable mill, FOSS Analytical Cyclotec, with a screen that will give a particle size
less than 1 mm. Weigh 3 g of sample to an accuracy of ± 0.1 mg into a thimble.
Note! Pre-drying is not necessary if the moisture content is less than 10%.
Dry the thimbles with samples at 103 C for 2 hours. Let cool to room temperature in desiccator.
Extraction Procedure
Temperature setting is only recommended settings using aluminium cups and is dependent on room temperature,
water temperature, water flow rate, flow rate in the fume hood. Important is to achieve a drop rate of 3-5 drops
per second. Adjust the temperature accordingly.
Model
Soxtec 2043
Soxtec 2045
Soxtec 2050/2055
Extraction Times
Boiling time
Rinsing time
Recovery time
Calculation
Calculate the fat using the formula below.
W
% Fat =
----------- x 100
W 1 =
Sample weight (g)
W 2 =
Extraction cup weight (g)
W 3 =
Extraction cup + residue weight (g)
Dedicated Analytical Solutions
FOSS Analytical AB
Box 70
SE-263 21 Höganäs
Sweden
Fig. 8:1
User Manual 1000 7414 / Rev. 4
Application Sub Note
ASN 3125
Solvent
Petroleum Ether 40-60°C
Petroleum Ether 40-60°C
Petroleum Ether 40-60°C
15 minutes
30 minutes
9-10 minutes, depending on drop rate and amount of solvent
3 - W 2
W 1
Tel
+46 42 36 15 00
Fax
+46 42 34 03 49
E-mail
info@foss.dk
Web
www.foss.dk
Volume
Recommended
Temperature
40-50 ml
90°C
50-70 ml
135°C
70-90 ml
135°C
© FOSS Analytical AB 2003, all rights reserved.
2050072a
8:1
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