AOAC OMB Final Action Recommendation (December 2019)-2016.14

2016.14 (October 2019) – FOS-03 MANUSCRIPT

FOR ERP USE ONLY DO NOT DISTRIBUTE

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Solution B (from Table 2016.14C ), V A

= total volume of Solution A (in mL), m A

= mass

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of sample weighed to prepare Solution A (in g), 0.0001 = factor to convert analyte

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concentration in solution (in µg/mL) to analyte concentration in sample (in g/100 g), 0.9

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= factor to correct for uptake of water during fructan hydrolysis.

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(d) For samples requiring the blank correction adapt the above equations as follows:

= ( − 0 ) × × � � × 0.0001 = ( − 0 ) × × � � × 0.0001

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where C G0

= glucose concentration in Blank Solution B (in µg/mL), C F0

= Fructose

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concentration in Blank Solution B (in µg/mL).

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(e) For samples requiring result in g/100 g original product (powder or liquid concentrate)

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that have been subjected to reconstitution as described in H(a) , adapt the above equations,

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as follows:

= × × � � × � + � × 0.0001 = × × � � × � + � × 0.0001 = ( − 0 ) × × � � × � + � × 0.0001 = ( − 0 ) × × � � × � + � × 0.0001

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where m R

= amount of sample weighed to prepare reconstitution (e.g. 25 g), V R

= amount

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of water weighed to prepare reconstitution (e.g. 200 g).

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M.

Reporting

Report results in g/100 g of (RTF, reconstituted, liquid concentrate or powder) product, with 20 3 significant digits.

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