Avaliação da concentração de retinol em leite UHT ("Ultra High Temperature") comercializado em Natal, Rio Grande do Norte

Química Nova

Fernanda Barros Soares¹  Juliana Morais De Sousa¹  Roberto Dimenstein¹ 

[1] ,Universidade Federal do Rio Grande do Norte Centro de Biociências Departamento de BioquímicaNatal RN ,Brasil

关键词: milk;    cow;    retinol;   

DOI  :  10.1590/S0100-40422008000200014

来源: SciELO

【 摘 要 】

Deficiency of micronutrients is a public health problem. Cow milk is a source of retinol. The objective of this study is to evaluate the retinol concentration in milk commercialized in Natal/RN. Ten samples were taken of each brand of UHT milk. Vitamin content was determined by HPLC using the Shimadzu LC-10 AD Chromatograph, coupled to the Shimadzu SPD 10 A UV-VIS Detector and the Shimadzu C-R6A Chromatopac Integrator with Shim-pack CLC-ODS (M) column, measuring 4.6 mm x 25 cm. The mobile phase was 100% methanol, with a flow of 1 mL/min. The mean retinol concentration varied between 22.7 ± 4.9 µg/100 mL and 44.1 ± 4.1 µg/100 mL, with the differences statistically significant (p<0.001). Only one of the 7 brands had retinol concentration below the normal requirements for human consumption.

【 授权许可】

CC BY-NC   
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