Lipidomic Analysis of Bacteria by Thin-Layer Chromatography and Liquid Chromatography/Mass Spectrometry

2015 ◽  
pp. 125-139 ◽  
Author(s):  
Howard Goldfine ◽  
Ziqiang Guan
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Liquid Chromatography Mass Spectrometry ◽  
Lipidomic Analysis ◽  
Chromatography Mass Spectrometry ◽  
Layer Chromatography

Adulterated pharmaceutical chemicals in botanical dietary supplements: novel screening approaches

2017 ◽  
Vol 36 (3) ◽  
Author(s):  
Yan Liu ◽  
Feng Lu
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Thin Layer ◽  
Dietary Supplements ◽  
Thin Layer Chromatography ◽  
Botanical Dietary Supplements ◽  
Targeted Analysis ◽  
Chromatography Mass Spectrometry ◽  
Layer Chromatography ◽  
Screening Approaches

AbstractThe increased availability and use of botanical dietary supplements (BDS) has been accompanied by an increased frequency of adulteration of these products with pharmaceutical chemicals. These adulterated products are a worldwide problem, and their consumption poses health risks to consumers. The main focus of this paper is to highlight novel screening approaches utilized in the detection of adulterants in BDS marketed for different therapeutic purposes. We summarize spectroscopic methods involving near-infrared, infrared, Raman, and nuclear magnetic resonance spectroscopy as feasible and interesting in-field screening tools for the analysis of suspected products (adulterated or not) before being sent to a laboratory for deeper inspection. In addition, the new approaches based on chromatographic methods such as liquid chromatography-circular dichroism, liquid chromatography-mass spectrometry, thin layer chromatography-surface enhanced Raman spectroscopy, and thin layer chromatography-mass spectrometry are discussed and reviewed. Novel analysis strategies from targeted analysis to post-targeted and non-targeted analysis allowing simultaneous determination of the number of multiclass pharmaceuticals are discussed.

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