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PhytoChemia Acta

Tag: GC analysis

An algorithm to solve them all (almost)

7 June 2019

Alexis St-Gelais, M. Sc., chimiste – Activities and events PhytoChemia has always been proud to provide the essential oils community with GC-FID results obtained from a dual-column system – just as it is done in academia. This powerful approach is able to solve most coelutions and reach a high level of detail in analyses in […]

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100% identification?

26 January 2019

Popularization – Alexis St-Gelais, M. Sc., chimiste Analysis reports for essential oils profiles most often report some total of the compounds identifications. In our reports, as in scientific literature, the total almost never makes it to 100%. However, many other testing laboratories consistently report that they identified 100% of their oils in routine. How is […]

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2018 summer distillations

8 January 2019

Sylvain Mercier, M. Sc., chimiste At PhytoChemia, we always like to seek around us to find interesting plants to distill. This summer, we performed several distillations of different plants. You will find in this blog post a summary of our 2018 summer distillations along with the general composition of essential oils that we obtained, their […]

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Agarwood oil: a few characteristic compounds

20 November 2018

Alexis St-Gelais, M. Sc., chimiste – Popularization Agarwood: one of the most prized, rare, and exotic essential oils. We have discussed on these pages earlier the most common problem encountered with this material on the market, that is, serial dilutions with carriers. But what is to be expected into agarwood oil itself? There have been […]

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The other side of oils: vegetable oils and fatty acids profiles

19 June 2018

Alexis St-Gelais, M. Sc., chimiste – Popularization Quality control of essential oils is an important issue in the worlds of flavour & fragrances and aromatherapy. But most of the time, these oils are not used pure. It is in fact recommended to dilute them prior to use, and a logical and popular solution to that […]

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Oil profiles: dill

17 May 2018

Sarah-Eve Tremblay, M. Sc. A., chimiste This week, we would like to talk about a very aromatic plant with a characteristic smell: dill (Anethum graveolens). This fragrant plant resembles the fennel (Foeniculum vulgare), and both plants present a strong scent. The two species are part of the Apiaceae family. Dill can reach a height of […]

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Oil Profiles: Mandarin (Expressed)

20 June 2017

Alexis St-Gelais, M. Sc., chimiste Mandarin fruit (Citrus nobilis) essential oil is an aromatic delicacy. By experience, we observe that it regularly is either adulterated or confused with other citruses. Chemically, there are a few good keypoints to look for that will tell if a mandarin oil is genuine. We also provide an annotated typical […]

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Synthetic Methyl Salicylate and You

12 June 2017

Alexis St-Gelais, chimiste Essential oils are worth quite a lot of money. It so happens that, in order to boost profits, unscrupulous people alter oils in various ways. This “Adulterants and you” series is there to introduce you to some of the adulterations we encounter. This is because not all of them are necessarily obvious, […]

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Do It Faster, Makes Us Stronger – Fast GC

11 May 2017

Benoit Roger, Ph. D., & Alexis St-Gelais, M. Sc., chimiste We have read many times on various oils-oriented Facebook groups indications that gas chromatographic columns should be as long as possible to achieve proper separation. Similarly, it is often stated that short analysis runs negatively impact the quality of data obtained. And under the most […]

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Oil Profiles: Frankincense, type serrata

18 April 2017

Alexis St-Gelais, M. Sc., chimiste Boswellia serrata grows in India, as opposed to most other commonly sold frankincense species which rather grow in the Horn of Africa and the southern Arabic peninsula. Frankincense serrata is not only segregated from a geographical point of view, but also differs from the other frankincenses chemically. This is reflected in […]

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