AOACSPIFANMethods-2017Awards

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H aselberger & J acobs : J ournal of AOAC I nternational V ol . 99, N o . 6, 2016  1587

Figure 4. Example of product containing Synergy 1 spiked at ~1.1 g/100 g (Part I), – Upper trace: inulin (Beneo Orafti HP); middle trace: SPIFAN adult nutritional powder low fat, 00859RF00; lower trace: Ingredion Nutraflora scFOS. Time interval from 36–44 min zoomed in to show detail.

calculation of the actual fructan content but, at the same time, serves as the primary determinant of selectivity.

Table 3 also shows data for the SPIFAN infant formula powder

with FOS/GOS. The total fructan content of this material was

LOQ

determined to be very close to the SMPR specified LOQ of

Data relevant to LOQ is summarized in Table 3. For the 9% sucrose solution spiked with 0.03% scFOS, average recovery was 97%, RSD r was 6.12%, and RSD IP was 7.42%. This RSD r at this level is just beyond the SMPR limit of 6%.

0.03%. For that sample, both RSD r

(2.14%) and RSD IP

(3.19%)

were well below the 6% repeatability limit.

Figure 5. Example of product containing HP (Part I), spiked at ~1.1 g/100 g – Upper trace: inulin (Beneo Orafti HP); middle trace: SPIFAN infant formula powder partially hydrolyzed soy, 410457651Z; lower trace: Ingredion Nutraflora scFOS. Time interval from 36–44 min zoomed in to show detail.