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Simultaneous determination of riboflavin and pyridoxine by UHPLC/LC–MS in UK commercial infant meal food products

Simultaneous determination of riboflavin and pyridoxine by UHPLC/LC–MS in UK commercial infant meal food products

Zand, Nazanin, Chowdhry, Babur Z., Pullen, Frank S., Snowden, Martin J. and Tetteh, John (2012) Simultaneous determination of riboflavin and pyridoxine by UHPLC/LC–MS in UK commercial infant meal food products. Food Chemistry, 135 (4). pp. 2743-2749. ISSN 0308-8146 (doi:10.1016/j.foodchem.2012.07.064)

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Abstract

An assay for the simultaneous quantitative determination of riboflavin and pyridoxine in eight different complementary infant meal products has been developed in order to (1) estimate the daily intake of these vitamins from commercial infant food consumption, and (2) ascertain their nutritional suitability relative to dietary guidelines for the 6–9 months age group. The method involves mild hydrolysis of the foods, an extraction of the supernatant by centrifugation followed by quantitative determination using ultra-high performance liquid chromatography. Separation of the two water soluble vitamins is achieved within one minute and the resultant sample is also LC–MS compatible. Despite wide individual differences between brands (p = 6.5e-12), no significant differences were observed in the level of pyridoxine between the meat and vegetable-based varieties (p = 0.7) per 100 g of commercial infant food. Riboflavin was not detected in any of the samples where the detection limit was below 0.07 μg/mL. In terms of the Reference Nutrient Intake (RNI) of pyridoxine for 6–9 months old infants, the complementary infant meal products analysed herein provided less than 15% of the RNI values with mean (SD) values of 12.87 (±4.46)% and 13.88 (±4.97)% for the meat- and vegetable-based recipes, respectively. The estimated total daily intake of riboflavin and pyridoxine from the consumption of commercial complementary food was found to be satisfactory and in accordance with the Dietary Reference Values (DRVs). The intake of both riboflavin and pyridoxine was estimated to be mainly derived from the consumption of formula milk which could be a cause of concern if the quality of an infant’s milk diet is compromised by an inadequate or lack of supplemented milk intake. The results of this study suggest that the selected commercial complementary infant foods in the UK market may not contain the minimum levels of riboflavin and pyridoxine required for the labelling declaration of the micronutrient content of such products as recommended by Commission Directive 2006/125/EC.

Item Type: Article
Additional Information: [1] Available online 20 July 2012. [2] Published in print: 15 December 2012. [3] Published in Food Chemistry, (2012), Volume 135, Issue 4, pp. 2743–2749.
Uncontrolled Keywords: infants, commercial complementary foods, riboflavin and pyridoxine content, nutritional information, simultaneous digestion and extraction, UHPLC, 23 LC–M
Subjects: Q Science > QD Chemistry
R Medicine > RA Public aspects of medicine > RA0421 Public health. Hygiene. Preventive Medicine
Pre-2014 Departments: School of Science
Related URLs:
Last Modified: 14 Oct 2016 09:22
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/8779

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