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Sanidad Militar
Print version ISSN 1887-8571
Abstract
PEREZ GRANA, R.. Validation and accreditation of analytical procedures of macronutrients: application to nutritional analysis in purées of geriatric diets. Sanid. Mil. [online]. 2015, vol.71, n.4, pp.224-231. ISSN 1887-8571. https://dx.doi.org/10.4321/S1887-85712015000400002.
Backgrounds and objectives: In order to ensure the quality in determining macronutrients in canned foods of combat rations Spanish Army and cooked dishes, validation and accreditation of analytical procedures are carried out. These are applied to nutritional analysis in purées of geriatric diets of a Military Old People´s Home of the Direction of Personal Assistance Spanish Army. Material and Methods: Assays were performed with internal analytical procedures. The uncertainty estimation is performed according to the principles of EURACHEM/CITAC guide. Results: Value range of assays of certified reference materials (CRMs): MOISTURE: relative bias, 0,19-3,86%; RSDR 0,31-1,76%; RSDr 0,25-0,86%; HORRATr 0,15-0,72; Urel 1,67-9,80%. PROTEIN: relative bias, 0,00-2,17 %; RSDR, 0,77-5,79 %; RSDr, 0,34-2,94 %; HORRATr, 0,34-1,44; Urel 1,66-18,3%. Limit of detection (LOD), 0,08% of nitrogen. Limit of quantitation (LOQ), 0,29 % of nitrogen. ASH: relative bias, 2,50-13,63%; RSDR, 2,42-16,62%; RSDr, 0,62-8,26%; HORRATr, 0,65-3,30; Urel 6,86-45,7%. FAT: relative bias, 3,74-5,88%; RSDR 0,98-3,32%; RSDr 0,94-3,22%; HORRATr 0,34-1,36%; Urel 13,0-15,8%. Proficiency testing exercices got a Z-score z< 2. The analysis of 51 purées samples, elaborated in a culinary form, yield the following mean values in percent: moisture (81,3±4,0); protein (5,17±2,14); fat (3,15±1,27); ash (0,98±0,48). Conclusions: The analytical procedures are useful within the range of determination. The reach of accreditation (ENAC, Spain) affects moisture (40-95%); protein (0,5-46%), fat (3,5-50%) and ash (0,4-4%).
Keywords : Validation; Accreditation; Macronutrients; Canned foods; Combat rations; Purées; Geriatric diets.
