Monitoring of 29 weight loss compounds in foods and dietary supplements by LC-MS/MS

作者:Kim Hyung Joo; Lee Ji Hyun; Park Hyoung Joon; Cho So Hyun; Cho Sooyeul; Kim Woo Seong*
来源:Food Additives and Contaminants Part A-Chemistry Analysis Control Exposure& Risk Assessment, 2014, 31(5): 777-783.
DOI:10.1080/19440049.2014.888497

摘要

Because of the rapid growth in dietary supplement availability and public concern for weight control, the investigation of foods and various dietary supplements illegally adulterated with weight loss compounds has become increasingly important. A total of 29 weight loss compounds, including sennoside, sibutramine, ephedrine and their analogues, found to be adulterated in foods and dietary supplements were simultaneously examined by LC-MS/MS. The 188 samples were collected between 2009 and 2012 in South Korea, and method validation was performed to determine the adulterants to the weight loss compounds. LODs, LOQs and linearity ranged from 0.03 to 7.5ngml(-1), from 0.08 to 30.00ngml(-1), and from 0.990 to 0.999, respectively. The results showed that nine weight loss compounds, namely bisacodyl, desmethylsibutramine, didesmethylsibutramine, ephedrine, fluoxetine, pseudoephedrine, sennoside A, sennoside B and sibutramine, were detected in 62 of all collected samples and were found in order of frequency as follows: sibutramine, 25.7%; sennoside A, 22.9%; sennoside B, 20.0%; fluoxetine, 8.6%; desmethylsibutramine, 7.1%; bisacodyl, ephedrine, and pseudoephedrine, 4.3%; and didesmethylsibutramine, 2.9%. Sibutramine, which was the most frequently found adulterant, ranged in levels from 0.03 to 132.40mgg(-1) (2010), from 0.88 to 76.2mgg(-1) (2011), and from 0.07 to 0.24mgg(-1) (2012). Although the concentrations of most compounds ranged widely, some compounds such as bisacodyl and fluoxetine were found at high concentrations in several samples.

  • 出版日期2014-5-4