Influence of the relative composition of trace elements and vitamins in physicochemical stability of total parenteral nutrition formulations for neonatal use

Nutrition Journal

Research

Valéria P de Sousa¹  Lúcio M Cabral¹  Bianca W Lobo¹  Nádia M Volpato²  Ricardo C Michel³  Venício F da Veiga⁴ 

[1] Departamento de Medicamentos, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, 21941-902, Rio de Janeiro, RJ, Brazil;Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, 90610-000, Porto Alegre, RS, Brazil;Instituto de Macromoléculas Professora Eloisa Mano, Universidade Federal do Rio de Janeiro, 21945-970, Rio de Janeiro, RJ, Brazil;Instituto de Microbiologia Professor Paulo de Góes, Universidade Federal do Rio de Janeiro, 21941-902, Rio de Janeiro, RJ, Brazil;

关键词: Total nutrient admixtures;    Stability;    Lipid globules;    Dynamic light scattering;    Light obscuration;    Optical microscopy;   

DOI  :  10.1186/1475-2891-11-26

 received in 2011-10-17, accepted in 2012-04-17,  发布年份 2012

来源: Springer

【 摘 要 】

ObjectiveThe present study aimed to evaluate the influence of the relative composition of trace elements and vitamins in physicochemical stability of neonatal parenteral nutrition.Material and methodsThree formulations for neonatal administration were selected; the main variable was the presence of trace elements and vitamins. The analyses where carried out immediately after preparation and at 24 h, 48 h, 72 h and 7 days after preparation. Three methods were selected to determine globule size: light obscuration, dynamic light scattering and optical microscopy. Complementary evaluation including visual inspection, determination of pH and osmolarity, peroxide levels and measurements of zeta potential were also performed.ResultsThere was an observable alteration in color and phase separation in the PN stored at 25°C and 40°C. Neither globule size pattern, nor any other physicochemical characteristic evaluated appeared to be considerably altered in any of the analyzed formulations even after 7 days of storage at 5°C. Globule size in all the PN studied was consistent with the established limit, below 500 nm by DLS measurement, and PFAT5 was below 0.05% under all storage temperatures.ConclusionConcomitant presence of trace elements and vitamins in the same neonatal formulation did not alter the evaluated aspects of stability.

【 授权许可】

Unknown   
© Lobo et al.; licensee BioMed Central Ltd. 2012. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.