AOAC OMB Final Action Recommendation (December 2019)-2016.14
FOS-03 FOR WORKING GROUP/ERP USE ONLY DO NOT DISTRIBUTE
b s VV Vm a s
C
1000
s
Where:
Cs = Concentration of fructose standard solution (in μg/mL)
m s = Weight of fructose used to make the fructose stock solution (in mg), normally about 100 mg
V a = Volume of fructose stock solution used to prepare the fructose standard solution (in mL), normally about 0.7 mL
V b = Final volume of the fructose stock solution (in mL), normally 100 mL
V s = final volume of the fructose standard solution (in mL), normally 100 mL
1000 = factor to convert mg/mL into μg/mL
The correction factors k and p can be calculated from the ingredient DP as follows:
DP
180
162 (
))1 (
k
DP
180
DP
p
DP
1
Where:
DP = average degree of polymerisation of the fructan (i.e. the average number of
monosaccharide residues per chain).
k = correction factor for the uptake of water during hydrolysis.
p = correction factor to correct for loss of terminal fructose in F m
type fructans or terminal
glucose in GF n
type fructans.
The concentration of fructan in the product can be calculated as follows:
CVA s
3.01.1
1
1
C
p k
100
1 mA
4.02.0
s
Made with FlippingBook HTML5