The formula with the lowest discrepancy was Similac 2, while the formula with the highest discrepancy was Enfamil 2, with Similac 2 and Enfamil 2 being significantly the formulas with the highest and lowest sugar concentration, respectively. On the other hand, the highest lactose value found was in NAN 2 (46.51 ± 0.08 gr), and the lowest value obtained was in Lacti Kids Premium 2 (21.42 ± 0.01 gr).Ĭonclusion: There is a variability of sugar concentrations in infant follow-on formulas, being these values lower than those referred to on product labels. Similar values were obtained for glucose except for Enfamil 2 (1.07 ± 0.01gr) and Baby Lac Pro 2 (0.72 ± 0.01gr) and for sucrose except for Lacti Kids Premium 2 (11.92 ± 0.01gr) and Similac 2 (9.94 ± 0.08 gr).
Regarding individual sugars, per 100 gm analyzed, fructose and maltose registered values <0.70 g. Furthermore, when comparing the infant follow-on formulas, significant differences were observed between all sugar concentrations ( p < 0.001), with the follow-on formula with the significantly higher sugar concentration being Similac 2 ( p < 0.001) and the one with the significantly lower concentration being Enfamil 2 ( p < 0.001). The average sugars recorded in the laboratory were compared with those on the product label for Similac 2 (50.3 and 53.1 gr), NAN 2 (46.5 and 51.5 gr), Baby Lac Pro 2 (41.5 and 57.0 gr), Lacti Kids Premium 2 (33.3 and 57.0 gr) and Enfamil 2 (22.8 and 56.0 gr). Results: The total sugars concentration per 100 gm of the five infant follow-on formulas showed a mean of 38.9 ± 11.03 gm, being Similac 2, the infant follow-on formula, with the highest concentration of 50.33 ± 0.11 gm and Enfamil 2, the lowest with 22.75 ± 0.06 gm. For the comparison of means, Welch's robust analysis of variance (ANOVA) test for equality of means and Tukey's post hoc test were used. Subsequently, the concentration of total and individual sugars (lactose, sucrose, glucose, fructose, and maltose) was determined using the high-performance liquid chromatography (HPLC) method in a specialized laboratory. Materials and methods: In this descriptive and observational study, the sample was represented by five brands of infant follow-on formulas most consumed in Peru (A, Similac 2 B, Enfamil 2 ® C, NAN 2 ® D, Baby Lac Pro 2 ® and E, Lacti Kids Premium 2®) with two samples of each, collected at two different locations in the Peruvian capital. Aim: The aim of the present preliminary study was to determine sugar concentration in infant follow-on formulas most widely consumed in Peru.
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