Evaluation of the retinol concentration in UHT milk commercialized in Natal, RN

Química Nova

Universidade Federal do Rio Grande do Norte, Natal, Brasil¹  Soares, Fernanda Barros¹  Dimenstein, Roberto¹  Sousa, Juliana Morais de¹ 

关键词: milk;    cow;    retinol.;   

DOI  :  10.1590/S0100-40422008000200014

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 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】

Unknown