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Journal Highlight: GC-MS analysis of various phytoestrogens in health functional foods

Date: May 15, 2017

Author: separationsNOW

The contents of 21 phytoestrogens in commercial health functional foods in South Korea sold to alleviate menopausal symptoms have been measured by GC/MS.

Read More thumbnail image: Journal Highlight GC-MS analysis of various phytoestrogens in health functional foods

Careful GC optimisation gives phyto-oestrogen separation

Date: May 15, 2017

Author: Ryan De Vooght-Johnson

Various functional foods used for treating menopausal symptoms contain phyto-oestrogens, which are compounds from plants that mimic the effect of female hormones. Scientists from the Korea Institute of Science and Technology and Yonsei University (both in Seoul) used hydrolysis, derivatisation and GC-MS to assay a wide range of phyto-oestrogens in functional foods.

Read More thumbnail image: Careful GC optimisation gives phyto-oestrogen separation

Chewing over the problem of gum antioxidant analysis

Date: May 1, 2017

Author: Ryan De Vooght-Johnson

Butylated hydroxytoluene (BHT) and butylated hydroxyanisole (BHA) are common antioxidants used as food additives. Scientists from the IRCCS Istituto di Ricerche Farmacologiche ‘Mario Negri’ in Milan have devised a novel method for the assay of these compounds in samples of chewing gum, using headspace analysis and GC-MS.

Read More thumbnail image: Chewing over the problem of gum antioxidant analysis

E-nose UFGC Detects if Meat Traders Have Been Telling Porkies

Date: Apr 17, 2017

Author: Ryan De Vooght-Johnson

Frozen meat products can be thawed out and passed off as fresh, chilled meats, thus fetching a higher price. Researchers at Warsaw University of Life Sciences and University College Dublin have developed a method to differentiate between chilled and frozen pork using an electronic nose device containing an ultra-fast gas chromatography unit.

Read More thumbnail image: E-nose UFGC Detects if Meat Traders Have Been Telling Porkies

Journal Highlight: Determination of ethyl glucuronide and fatty acid ethyl esters in hair samples

Date: Apr 17, 2017

Author: separationsNOW

Two methods for the routine assessment of alcohol exposure by hair analysis have been presented, combining analysis of ethyl glucuronide by LC/MS/MS and fatty acid ethyl esters by GC/MS/MS.

Read More thumbnail image: Journal Highlight Determination of ethyl glucuronide and fatty acid ethyl esters in hair samples

Cancer-causing cola compounds caught by GC-MS/MS

Date: Apr 2, 2017

Author: Ryan De Vooght-Johnson

2-Methylimidazole and 4-methylimidazole, compounds found in cola drinks and dark beers, are suspected to be possible carcinogens on the basis of animal studies. Scientists from Woosuk University in South Korea have developed an improved method for methylimidazole analysis using derivatisation followed by GC-MS/MS.

Read More thumbnail image: Cancer-causing cola compounds caught by GC-MSMS

Journal Highlight: Qualitative characteristics and comparison of volatile fraction of vodkas made from different botanical materials by comprehensive 2D GC and the electronic nose based on the technology of ultra-fast GC

Date: Mar 20, 2017

Author: separationsNOW

GC×GC and an electronic nose-based ultra-fast GC with chemometric analysis have both been used to distinguish between the vodkas produced from different raw materials.

Read More thumbnail image: Journal Highlight Qualitative characteristics and comparison of volatile fraction of vodkas made from different botanical materials by comprehensive 2D GC and the electronic nose based on the technology of ultra-fast GC

From failing fertility to faulty fatty acids: GC reveals all

Date: Mar 15, 2017

Author: Ryan De Vooght-Johnson

Male infertility is often caused by poor sperm motility (i.e. poor ‘swimming’), also known as asthenozoospermia, but the causes of this condition are not well understood. Researchers from Nanjing Tech University compared the concentrations of a range of seminal fatty acids and other metabolites from those with asthenozoospermia and healthy controls using GC-MS, the results showing some significant differences between the two groups.

Read More thumbnail image: From failing fertility to faulty fatty acids GC reveals all

The search for stimulant alkaloids: from MS sources to sources of highs

Date: Mar 1, 2017

Author: Ryan De Vooght-Johnson

The leaves of the qat (or khat) tree are widely chewed as a stimulant in Yemen and the Horn of Africa; they contain the stimulant alkaloids cathinone, cathine and (1R,2S)-norephedrine. Researchers from Colorado State University examined leaves from 43 related plant species by GC/MS, using a double derivatisation method, in order to determine if any of these contained the same stimulant alkaloids.

Read More thumbnail image: The search for stimulant alkaloids from MS sources to sources of highs

Phthalate separation success can be secured by GC-MS

Date: Feb 15, 2017

Author: Ryan De Vooght-Johnson

Phthalate plasticisers are ubiquitous in the environment, and have long been a source of health concern, particularly in their role as endocrine disrupters. Phthalate exposure has traditionally been determined by LC-MS/MS on metabolites in urine; however, a recent paper from Toshiaki Yoshida from the Osaka Prefectural Institute of Public Health demonstrated a useful, inexpensive derivatisation/GC-MS method for detecting these metabolites.

Read More thumbnail image: Phthalate separation success can be secured by GC-MS
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