Methodology
Grapefruit seed extracts are added to cosmetics, food supplements, and pesticides for their antimicrobial effect, but suspicions about the true nature of the active compounds in GSEs arose when synthetic additives were found in commercial products. Various analytical methods were developed to determine the constituents or compounds in GSE samples which include particle-induced x-ray emission (PIXE), electrospray ionization mass spectrometry (ESI-MS), high performance liquid chromatography (HPLC), liquid chromatography-mass spectrometry (LC-MS), and nuclear magnetic resonance (NMR) analysis.
Read more about this topic: Grapefruit Seed Extract
Famous quotes containing the word methodology:
“One might get the impression that I recommend a new methodology which replaces induction by counterinduction and uses a multiplicity of theories, metaphysical views, fairy tales, instead of the customary pair theory/observation. This impression would certainly be mistaken. My intention is not to replace one set of general rules by another such set: my intention is rather to convince the reader that all methodologies, even the most obvious ones, have their limits.”
—Paul Feyerabend (1924–1994)