pg. 28 Rev F 12/08/14
Numbered Notes
1. Pre-extraction drying time of the samples in the filter bags can be greatly reduced by using a microwave oven. However,
microwave ovens vary in energy output and samples vary in water and fat composition. You will need to experiment with your
microwave oven to determine the proper conditions for use. Contact ANKOM Technology for further information.
2. Some samples with large amounts of carbohydrates (starches and cellulose) may bind small quantities of solvent and require
additional post drying. To remove bound solvent, dry at 100°C for 1 – 3 hrs or at 125°C for 30 minutes.
Sample ID
oat meal
brownie mix
soybean A
canola
soybean meal
corn A
poultry starter
cattle feed
pig starter
alfalfa
cat food
cookies
bkft cereal
tortilla chips
Number of laboratories 12 12 11 9 12 12 11 10 11 11 12 11 12 12
Number of replicates 24 24 22 18 24 24 22 20 22 22 24 22 24 24
Filter Bag Average, % Crude Fat 5.8 8.7 20.9 39.0 1.6 3.3 3.3 3.2 5.6 2.4 6.3 22.7 2.3 19.9
Certified Labs Average
a
5.7 8.7 21.1 39.7 1.6 3.6 3.5 3.0 5.5 2.2 6.2 23.1 2.3 20.0
AOCS Am 2-93 Avg. for Oilseeds 21.9 44.8 3.6
S
r
0.36 0.20 0.35 0.23 0.14 0.31 0.24 0.18 0.20 0.39 0.27 0.20 0.26 0.39
S
R
0.54 0.31 0.63 0.68 0.27 0.42 0.42 0.20 0.28 0.50 0.30 0.20 0.36 0.48
RSD
r
, %
6.2 2.3 1.7 0.6 8.5 9.5 7.3 5.6 3.6 16.1 4.2 0.9 11.4 2.0
RSD
R
, %
9.4 3.5 3.0 1.7 16.3 12.7 12.6 6.1 5.0 20.7 4.7 0.9 15.7 2.4
r 0.99 0.56 0.98 0.65 0.39 0.88 0.68 0.51 0.56 1.08 0.75 0.56 0.72 1.09
R 1.52 0.86 1.76 1.90 0.75 1.18 1.16 0.55 0.78 1.39 0.83 0.56 1.00 1.35
HORRAT 3.05 1.21 1.19 0.76 4.38 3.87 3.77 1.83 1.61 5.92 1.56 0.35 4.45 0.95
Sample ID
dog food
crackers
turkey
ham
beef ground
chicken breast
soybean B
safflower
potato chips
hot dog
sausage
corn B
cheese curls
corn silage
Number of laboratories 12 10 12 9 11 11 11 9 11 12 11 12 12 12
Number of replicates 24 20 24 18 22 22 22 18 22 24 22 24 24 24
Filter Bag Average, % Crude Fat 6.8 23.8 3.2 11.6 23.8 2.8 19.4 22.5 32.0 39.5 25.7 3.4 30.6 2.3
Certified Labs Average
a
6.9 24.0 3.2 11.3 23.5 2.7 19.7 23.2 32.0 39.0 25.0 3.7 30.5 2.3
AOCS Am 2-93 Avg. for Oilseeds 20.8 24.7
S
r
0.35 0.23 0.21 0.30 0.24 0.33 0.38 0.53 0.48 0.35 0.34 0.39 0.48 0.23
S
R
0.35 0.23 0.34 0.30 0.36 0.33 0.62 0.83 0.52 0.59 0.51 0.41 0.69 0.51
RSD
r
, %
5.23 0.96 6.57 2.59 1.01 11.89 1.97 2.36 1.49 0.89 1.33 11.48 1.59 9.87
RSD
R
, %
5.23 0.96 10.84 2.59 1.49 11.89 3.19 3.69 1.61 1.49 1.98 11.93 2.27 22.45
r 0.99 0.64 0.58 0.84 0.67 0.94 1.07 1.49 1.34 0.98 0.96 1.10 1.36 0.63
R 0.99 0.64 0.96 0.84 0.99 0.94 1.73 2.33 1.45 1.65 1.43 1.14 1.94 1.44
HORRAT 1.74 0.39 3.22 0.94 0.6 3.47 1.25 1.48 0.68 0.65 0.81 3.59 0.95 6.36
a
AOCS Official Methods Ba 3-38, AOAC 920.39 or equivalent
Table 1. A summary of the statistical analysis of the international collaborative study of the Filter Bag Technique for the proposed Official AOCS Method, “Rapid Determination of
Oil/Fat Utilizing High Temperature Solvent Extraction” is presented in this table. Included in the summary is a comparison of the Filter Bag Technique with the results of analysis by
AOCS certified laboratories using official AOCS or AOAC methods
(32 strony)
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