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Single laboratory method performance evaluation for the analysis of total food folate by trienzyme extraction and microplate assay.
Chen L, Eitenmiller RR. Chen L, et al. J Food Sci. 2007 Jun;72(5):C243-7. doi: 10.1111/j.1750-3841.2007.00370.x. J Food Sci. 2007. PMID: 17995709
The results showed that trienzyme digestion using alpha-amylase, Pronase(R), and conjugase from chicken pancreas coupled with a 96-well microplate assay provided a highly accurate, reproducible, and sensitive method for the determination of folate in a variety of foods....
The results showed that trienzyme digestion using alpha-amylase, Pronase(R), and conjugase from chicken pancreas coupled with a 96-we …
Determination of vitamin K1 in medical foods by liquid chromatography with postcolumn reduction and fluorometric detection.
Ware GM, Chase GW, Eitenmiller RR, Long AR, Ware GM, Chase GW, Eitenmiller RR, Long AR. Ware GM, et al. J AOAC Int. 2000 Jul-Aug;83(4):957-62. J AOAC Int. 2000. PMID: 10995121
Linear response ranged from 0.1 to 1.0 ng vitamin K1 (r= 0.9999). The mean recovery (n = 38) for all spiking levels was 101.6 +/- 2.85%. Analysis of Standard Reference Material 1846, Infant Formula, gave a mean value of 0.95 +/- 0.088 mg vitamin K/kg (K or K1?) ...
Linear response ranged from 0.1 to 1.0 ng vitamin K1 (r= 0.9999). The mean recovery (n = 38) for all spiking levels was 101.6 +/- 2.8 …
Liquid chromatographic analysis of vitamin B6 in reconstituted infant formula: collaborative study.
Mann DL, Ware GM, Bonnin E, Eitenmiller RR, Barna E, Christiansen S, De Borde JL, DeVries J, Gilliland P, Hemmer J, Kalman A, Konings E, Levin D, Salvati L, Woollard D. Mann DL, et al. J AOAC Int. 2005 Jan-Feb;88(1):30-7. J AOAC Int. 2005. PMID: 15759723
The repeatability relative standard deviation (RSD(r)) ranges were 2.0-4.0 and 3.5-5.9% for fortified milk- and soy-based formulas, respectively. ...HORRAT values ranged from 0.42 to 0.53, indicating that the precision of the method is acceptable. The mean RSD(r):RS …
The repeatability relative standard deviation (RSD(r)) ranges were 2.0-4.0 and 3.5-5.9% for fortified milk- and soy-based formulas, r …
Determination of lipids in infant formula powder by direct extraction methylation of lipids and fatty acid methyl esters (FAME) analysis by gas chromatography.
Cantellops D, Reid AP, Eitenmiller RR, Long AR. Cantellops D, et al. J AOAC Int. 1999 Sep-Oct;82(5):1128-39. J AOAC Int. 1999. PMID: 10513013
FAMEs were quantitated by capillary gas chromatography (GC) over a fatty acid concentration range of 0 to 1.7 mg/mL (r > or = 0.9997). Total fat was calculated as the sum of individual fatty acids expressed as triglyceride equivalents, in accordance with nutrition label …
FAMEs were quantitated by capillary gas chromatography (GC) over a fatty acid concentration range of 0 to 1.7 mg/mL (r > or = 0.99 …