PMID- 26037506 OWN - NLM STAT- MEDLINE DCOM- 20170317 LR - 20170317 IS - 1552-5732 (Electronic) IS - 0890-3344 (Linking) VI - 32 IP - 3 DP - 2016 Aug TI - Calibration Adjustment of the Mid-infrared Analyzer for an Accurate Determination of the Macronutrient Composition of Human Milk. PG - NP19-27 LID - 10.1177/0890334415588513 [doi] AB - BACKGROUND: Human milk composition analysis seems essential to adapt human milk fortification for preterm neonates. The Miris human milk analyzer (HMA), based on mid-infrared methodology, is convenient for a unique determination of macronutrients. However, HMA measurements are not totally comparable with reference methods (RMs). OBJECTIVE: The primary aim of this study was to compare HMA results with results from biochemical RMs for a large range of protein, fat, and carbohydrate contents and to establish a calibration adjustment. METHODS: Human milk was fractionated in protein, fat, and skim milk by covering large ranges of protein (0-3 g/100 mL), fat (0-8 g/100 mL), and carbohydrate (5-8 g/100 mL). For each macronutrient, a calibration curve was plotted by linear regression using measurements obtained using HMA and RMs. RESULTS: For fat, 53 measurements were performed, and the linear regression equation was HMA = 0.79RM + 0.28 (R(2) = 0.92). For true protein (29 measurements), the linear regression equation was HMA = 0.9RM + 0.23 (R(2) = 0.98). For carbohydrate (15 measurements), the linear regression equation was HMA = 0.59RM + 1.86 (R(2) = 0.95). A homogenization step with a disruptor coupled to a sonication step was necessary to obtain better accuracy of the measurements. Good repeatability (coefficient of variation < 7%) and reproducibility (coefficient of variation < 17%) were obtained after calibration adjustment. CONCLUSION: New calibration curves were developed for the Miris HMA, allowing accurate measurements in large ranges of macronutrient content. This is necessary for reliable use of this device in individualizing nutrition for preterm newborns. CI - (c) The Author(s) 2015. FAU - Billard, Helene AU - Billard H AD - INRA, UMR 1280, Physiologie des Adaptations Nutritionnelles, Nantes, France Centre de Recherche en Nutrition Humaine - Ouest, Nantes, France L'Universite Nantes Angers Le Mans, Nantes, France. FAU - Simon, Laure AU - Simon L AD - INRA, UMR 1280, Physiologie des Adaptations Nutritionnelles, Nantes, France Centre de Recherche en Nutrition Humaine - Ouest, Nantes, France L'Universite Nantes Angers Le Mans, Nantes, France Centre Hospitalo-Universitaire Hotel-Dieu, Nantes, France. FAU - Desnots, Emmanuelle AU - Desnots E AD - INRA, UMR 1280, Physiologie des Adaptations Nutritionnelles, Nantes, France Centre de Recherche en Nutrition Humaine - Ouest, Nantes, France L'Universite Nantes Angers Le Mans, Nantes, France. FAU - Sochard, Agnes AU - Sochard A AD - INRA, UMR 1280, Physiologie des Adaptations Nutritionnelles, Nantes, France Centre de Recherche en Nutrition Humaine - Ouest, Nantes, France L'Universite Nantes Angers Le Mans, Nantes, France. FAU - Boscher, Cecile AU - Boscher C AD - Centre Hospitalo-Universitaire Hotel-Dieu, Nantes, France. FAU - Riaublanc, Alain AU - Riaublanc A AD - INRA, UR 1268 BIA (Biopolymeres, Interactions, Assemblages), Nantes, France. FAU - Alexandre-Gouabau, Marie-Cecile AU - Alexandre-Gouabau MC AD - INRA, UMR 1280, Physiologie des Adaptations Nutritionnelles, Nantes, France Centre de Recherche en Nutrition Humaine - Ouest, Nantes, France L'Universite Nantes Angers Le Mans, Nantes, France. FAU - Boquien, Clair-Yves AU - Boquien CY AD - INRA, UMR 1280, Physiologie des Adaptations Nutritionnelles, Nantes, France Centre de Recherche en Nutrition Humaine - Ouest, Nantes, France L'Universite Nantes Angers Le Mans, Nantes, France clair-yves.boquien@univ-nantes.fr. LA - eng PT - Comparative Study PT - Journal Article DEP - 20150602 PL - United States TA - J Hum Lact JT - Journal of human lactation : official journal of International Lactation Consultant Association JID - 8709498 RN - 0 (Dietary Carbohydrates) RN - 0 (Dietary Fats) RN - 0 (Milk Proteins) MH - Calibration MH - Dietary Carbohydrates/*analysis MH - Dietary Fats/*analysis MH - Humans MH - Linear Models MH - Milk Proteins/*analysis MH - Milk, Human/*chemistry MH - Reference Standards MH - Reproducibility of Results MH - Spectrophotometry, Infrared/instrumentation/*standards OTO - NOTNLM OT - breastfeeding OT - human milk OT - milk composition OT - premature infants EDAT- 2015/06/04 06:00 MHDA- 2017/03/18 06:00 CRDT- 2015/06/04 06:00 PHST- 2014/09/23 00:00 [received] PHST- 2015/05/03 00:00 [accepted] PHST- 2015/06/04 06:00 [entrez] PHST- 2015/06/04 06:00 [pubmed] PHST- 2017/03/18 06:00 [medline] AID - 0890334415588513 [pii] AID - 10.1177/0890334415588513 [doi] PST - ppublish SO - J Hum Lact. 2016 Aug;32(3):NP19-27. doi: 10.1177/0890334415588513. Epub 2015 Jun 2.