Preparation and Characterization of Standard Reference Material 1849 Infant/Adult Nutritional Formula

Abstract Standard Reference Material (SRM) 1849 Infant/Adult Nutritional Formula has been issued by the National Institute of Standards and Technology (NIST) as a replacement for SRM 1846 Infant Formula, issued in 1996. Extraction characteristics of SRM 1846 have changed over time, as have NIST's analytical capabilities. While certified mass fraction values were provided for five constituents in SRM 1846 (four vitamins plus iodine), certified mass fraction values for 43 constituents are provided in SRM 1849 (fatty acids, elements, and vitamins) and reference mass fraction values are provided for an additional 43 constituents including amino acids and nucleotides, making it the most extensively characterized food-matrix SRM available from NIST.

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A Single Cell Protein as Standard Reference Material for Determination of Amino Acids, Fatty Acids, and Elements in Foods

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/74.1.104 ◽

1991 ◽

Vol 74 (1) ◽

pp. 104-106

Author(s):

Abdul Aziz ◽

Faisal Abu-Dagga

Keyword(s):

Amino Acids ◽

Fatty Acids ◽

Reference Material ◽

Single Cell ◽

Standard Reference Material ◽

Room Temperature ◽

Trace Element Composition ◽

Single Cell Protein ◽

Cell Protein

Abstract A commercially available single-cell protein (Pruteen) was analyzed for amino acids, fatty acids, and major, minor, and trace-element composition after storage at room temperature and at 4°C over a period of 5 years. The purpose was to assess its suitability as an organic-nutrient standard reference material for food analysis. The material showed longterm stability and is, therefore, recommended for interlaboratory certification studies.

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Extension of AOAC Official Method 996.01 to the Analysis of Standard Reference Material (SRM) 1846 and Infant Formulas

Journal of AOAC International ◽

10.1093/jaoac/84.3.805 ◽

2001 ◽

Vol 84 (3) ◽

pp. 805-814 ◽

Cited By ~ 13

Author(s):

Subramaniam Satchithanandam ◽

Jan Fritsche ◽

Jeanne I Rader

Keyword(s):

Fatty Acids ◽

Fatty Acid ◽

Reference Material ◽

Infant Formula ◽

Standard Reference Material ◽

Official Method ◽

Powdered Infant Formula ◽

Infant Formulas ◽

Aoac Official ◽

Aoac Official Method

Abstract There is currently no official method for the analysis of fatty acids (including trans fatty acids) in infant formulas. AOAC Official Method 996.01 for Fat Analysis in Cereal Products was extended to the analysis of milk-based infant formula Standard Reference Material (SRM)1846 to determine its applicability for use with infant formulas. Following the analysis of SRM 1846, 2 infant formulas, one milk-based liquid and one soy-based powdered infant formula, were analyzed for total fatty acid composition. Fatty acid methyl esters were prepared and analyzed by gas chromatography. The results of the analysis of SRM 1846 show that the mean analyzed values were highly reproducible as indicated by low coefficients of variation (CV). The CVs were <5% for the major fatty acids. Mean analyzed values for individual fatty acids in SRM 1846 were within ± 1 standard deviation of the certificate values. The analyzed value for total fat as triglycerides (26.27 ± 0.25%) agreed well with the certificate value (27.1 ± 0.59%). Analyses of infant formulas showed that the concentrations of linoleic acid and fat meet the requirements for such formulas.

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