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• W2315404295 abstract "BioanalysisVol. 3, No. 15 News & AnalysisFree AccessBook Review: Hydrophilic Interaction Liquid Chromatography (HILIC) and Advanced ApplicationsGabriel Marcelín JiménezGabriel Marcelín JiménezGlobal Bioanalytical Consulting, S.C., Av. Cuauhtémoc 722, Ofna. 220, Col. Piedad-Narvarte, Mexico City, c.p. 03000, Mexico. Search for more papers by this authorEmail the corresponding author at gabmarcelin@pharmometrica.com.mxPublished Online:9 Aug 2011https://doi.org/10.4155/bio.11.160AboutSectionsPDF/EPUB ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareShare onFacebookTwitterLinkedInRedditEmail Since Alpert [1] coined the term hydrophilic interaction liquid chromatography (HILIC) to define the highly efficient chromatographic separation of very polar molecules that takes place through the interaction between an aqueous organic mobile phase and a polar stationary phase, the technique has been fine tuned, and accounts of many of its applications have been published.In this information field, I commend the excellent effort of Perry G Wang (Research Chemist, Office of Regulatory Science, US FDA) and Weixuan He (Associated Director, Product and Process Development, at Meda Pharmaceuticals), who compiled and edited the state-of-the-art in their book Hydrophilic Interaction Liquid Chromatography (HILIC) and Advanced Applications, published by CRC Press (Taylor & Francis Group, Boca Raton, FL, USA, 2011).This is a well-organized piece that takes us through 23 chapters ranging from the most basic concepts up to the very specific applications developed for recognized scientific teams who make contributions to the book.Chapters 1, 2, 3, 11 and 17 offer the basic concepts for understanding HILIC, comparing diverse aqueous normal-phase chromatographies with true HILIC, explaining the relationship between log k’ and percentage organic volume in the mobile phase, using the calculation of log D for choosing internal standards during method development, giving a point of view on ion-exchage chromatography as well as HILIC, exposing the effects of buffer concentration and temperature on HILIC performance, and describing the retention and selectivity of several polar phases.Although the book is not divided into sections, its organization allows us to realize that chapters are grouped by similar items. Chapters 4, 5 and 6 afford advanced applications in the food and safety field; the separation of proanthocyanidins and other plant polyphenols, the use of HILIC for checking final quality, nutrients and the safety of diverse food products, and toxic analysis episodes during seafood consumption.Material on environmental applications, included in Chapters 7 and 8, explores the search for pesticides and drugs in wastewater and soil.For all of those who love clinical applications, Chapters 9 and 10 delve into the hard work of biological sample processing previous to HILIC and depict the effort of scientists employing this type of chromatography for selecting and quantifying a huge variety of biomarkers for several diseases. Chapter 18 introduces us to the cumbersome analysis of very polar drugs for pharmacokinetic purposes.In Chapters 12 through 16, five research groups describe their works in the field of pharmaceutical applications. HILIC has become a solution for the analysis of polar impurities during R&D and for the characterization of very polar acid or basic drugs. On these pages, two examples of HILIC-UPLC are shared: analysis of ioversol and of hydrazine-based mildronate.Two special chapters are included for biochemical applications (Chapters 19 and 21): the separation of very hydrophilic mono- and di-phosporylated nucleotides, and the separation of carbohydrates.Finally, and to avoid the idea that HILIC is solely for small molecules, Chapters 20, 22 and 23 are presented in the area of proteomics. HILIC has been utilized for the characterization of post-translational protein modifications such as glycosylation and phosporylation.The great amount of applications included that have coupled HILIC with ms is not surprising, and there are several physicochemical reasons for this. First, the high percentage of organic solvent – usually acetonitrile – used in the mobile phase decreases viscosity, with a consequent decrease in pressure. Thus, high flow-rates can be used, rendering shorter run times. And second, the superficial tension of water droplets is decreased by the action of the organic compound, facilitating the evaporation of the mobile phase during electrospray ionization, which results in higher sensitivity. Finally, it has been observed that during HILIC the effect of ion suppression is reduced.Having a printed book in one’s hands is always an opportunity for the imagination, and if the book is pleasant and very useful, it’s the best of these. I sincerely hope that people who will have the chance to read Hydrophilic Interaction Liquid Chromatography (HILIC) and Advanced Applications enjoy it as I did.Financial & competing interests disclosureThe author has no relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending, or royalties. No writing assistance was utilized in the production of this manuscript.Bibliography1 Alpert AJ. Hydrophilic-interaction chromatography for the separation of peptides, nucleic acids and other polar compounds. J. Chromatogr.499,177–196 (1990).Crossref, Medline, CAS, Google ScholarFiguresReferencesRelatedDetails Vol. 3, No. 15 Follow us on social media for the latest updates Metrics Downloaded 1,278 times History Published online 9 August 2011 Published in print August 2011 Information© Future Science LtdFinancial & competing interests disclosureThe author has no relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending, or royalties. No writing assistance was utilized in the production of this manuscript.PDF download" @default.
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