Dietary Supplements - Analysis
Research News and Information

Monday, November 23, 2009

Structural determination of sildenafil and its analogues in dietary supplements by fast-atom bombardment collision-induced dissociation tandem mass spectrometry.

29 Sep 2009 Sildenafil and its analogues, which are used as illegal additives in several dietary supplements, were isolated by liquid-liquid extraction and column chromatography and analyzed by fast-atom bombardment mass spectrometry (FAB-MS). Structures of ... Read more...

Electrospray ionisation with selected reaction monitoring for the determination of Mn-citrate, Fe-citrate, Cu-citrate and Zn-citrate.

30 Jul 2009 Citrate complexes of Mn and Fe, and potentially those of Cu and Zn, are considered as important low molecular mass species in human serum and cerebrospinal fluid (CSF). For example, Mn is supposed to enter the brain under excess exposure as ... Read more...

Liquid chromatographic determination of the cyanobacterial toxin beta-n-methylamino-L-alanine in algae food supplements, freshwater fish, and bottled water.

30 Jul 2009 Beta-N-Methylamino-L-alanine (BMAA) is a neurotoxin originally found in cycad seeds and now known to be produced by many species of freshwater and marine cyanobacteria. We developed a method for its determination in blue-green algae (BGA) food ... Read more...

Latest indexed articles for 'Dietary Supplements - Analysis'

These are the very latest articles for this heading:

• Structural determination of sildenafil and its analogues in dietary supplements by fast-atom bombardment collision-induced dissociation tandem mass spectrometry. 29 Sep 2009
• Electrospray ionisation with selected reaction monitoring for the determination of Mn-citrate, Fe-citrate, Cu-citrate and Zn-citrate. 30 Jul 2009
• Liquid chromatographic determination of the cyanobacterial toxin beta-n-methylamino-L-alanine in algae food supplements, freshwater fish, and bottled water. 30 Jul 2009
• Product-specific sample clean-up and HPLC analysis of aflatoxins for a dietary product. 29 Jun 2009
• Vitamin A supplementation during puerperium: systematic review. 17 Jun 2009
• High sensitive determination of zinc with novel water-soluble small molecular fluorescent sensor. 15 Jun 2009
• Anti-hypertensive nutraceuticals and functional foods. 8 Jun 2009
• First detection of anatoxin-a in human and animal dietary supplements containing cyanobacteria. 7 Jun 2009
• Enhanced absorption of n-3 fatty acids from emulsified compared with encapsulated fish oil. 30 May 2009
• Persistent organic pollutants in fish oil supplements on the canadian market: polychlorinated dibenzo-p-dioxins, dibenzofurans, and polybrominated diphenyl ethers. 29 Apr 2009
• Capabilities of direct sample introduction--comprehensive two-dimensional gas chromatography--time-of-flight mass spectrometry to analyze organic chemicals of interest in fish oils. 29 Apr 2009
• The comparative absorption of silicon from different foods and food supplements. 7 Apr 2009
• Use of field-portable XRF analyzers for rapid screening of toxic elements in FDA-regulated products. 6 Apr 2009
• Dietary chloride deficiency due to new liquid nutritional products. 30 Mar 2009
• Meta-analysis: the effect of supplementation with lactoferrin on eradication rates and adverse events during Helicobacter pylori eradication therapy. 30 Mar 2009
• Fast derivatization of the non-protein amino acid ornithine with FITC using an ultrasound probe prior to enantiomeric determination in food supplements by EKC. 27 Feb 2009
• Chromatographic fingerprint analysis of Pycnogenol dietary supplements. 27 Feb 2009
• Column liquid chromatography/electrospray ionization-time of flight-mass spectrometry and ultraperformance column liquid chromatography/mass spectrometry methods for the determination of ginkgolides and bilobalide in the leaves of Ginkgo biloba and dietary supplements. 27 Feb 2009
• Application of analytical chemistry to botanicals and dietary supplements. 27 Feb 2009
• Simultaneous determination of cholecalciferol (vitamin D3) and ergocalciferol (vitamin D2) in foods by selected reaction monitoring. 27 Feb 2009

See a longer list of these articles.

Technical information about 'Dietary Supplements'

Definition: Products in capsule, tablet or liquid form that provide essential nutrients, such as a vitamin, an essential mineral, a protein, an herb, or similar nutritional substance. (FDA Backgrounder, June 15, 1993, p2)

Descriptor UI: D019587

Alternative terms: Dietary Supplements; Dietary Supplement; Supplement, Dietary; Supplements, Dietary; Nutraceuticals; Nutraceutical; Neutraceuticals; Neutraceutical; Food Supplementation; Supplementation, Food; Dietary Supplementation; Dietary Supplementations; Supplementation, Dietary; Supplementations, Dietary; Food, Supplemented; Foods, Supplemented; Supplemented Food; Supplemented Foods; Food Supplements; Food Supplement; Supplement, Food; Supplements, Food;

Allowable Qualifiers: adverse effects; analysis; classification; economics; history; microbiology; parasitology; poisoning; radiation effects; standards; supply & distribution; toxicity; utilization; statistics & numerical data; virology;

Tree Number: J02.500.456;

Online Note: use FOOD, FORTIFIED to search DIETARY SUPPLEMENTATION 1995-97 & FOOD, SUPPLEMENTED 1975-97

History Note: 98; DIETARY SUPPLEMENTATION was see FOOD, FORTIFIED 1995-97; FOOD, SUPPLEMENTED was see FOOD, FORTIFIED 1975-97

Technical Notes: do not confuse with FOOD, FORTIFIED or FOOD, FORMULATED or FOOD ADDITIVES; coordinate IM with specific nutrient if relevant (IM)