Direct Determination of β-Hydroxy-β-Methylbutyrate (HMB) in Liquid Nutritional Products

被引:0
|
作者
Jeffrey H. Baxter
Rosalyn R. Phillips
Lobat Dowlati
Karen C. Goehring
Paul W. Johns
机构
[1] Abbott Laboratories,
[2] Abbott Nutrition Division,undefined
来源
Food Analytical Methods | 2011年 / 4卷
关键词
β-Hydroxy-β-methylbutyrate; HPLC determination; Method validation; Liquid nutritional product; Hydroxy acid; UV absorptivity;
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学科分类号
摘要
A high performance liquid chromatography/ultraviolet method developed for the simple and direct determination of β-hydroxy-β-methylbutyrate (HMB) in liquid nutritional products and dietary supplements is described. Method suitability was defined by experimental assessments of linearity (r2 > 0.9999), precision (day-to-day RSD <1.5%), accuracy (spike recoveries = 98.1–102.4%, n = 28), selectivity (peak purity average = 99.8 ± 0.8%, n = 10; absence of interference verified by placebo analysis), and quantitation limit (90 mg/kg or 0.8 mM). The method provides for a simple, accurate, and precise quantification of HMB, when present at millimolar concentrations in liquid nutritional products and dietary supplements.
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页码:341 / 346
页数:5
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