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Introducing plants from the boreal forest of Quebec – Card # 3 : Coptis trifolia (L.)

29 September 2014

Laurie Caron – Plant card Figure 1 : Plant representation. Latin name: Coptis trifolia (L.) and its former name is Coptis groenlandica (Oeder) Fern. Common Names: Goldthread Greenland, Sabouillane, Sibouillane, Gold-thread.  Small herbaceous perennial with rhizomes slender, wiry and yellow gold (Figure 1). The leaves of this plant are basal, long-stalked, glossy superiorly (Figure 2)1.

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Plant card

Introducing plants from the boreal forest of Quebec – Card # 2 : Anaphalis margaritacea (L.) Benth. & Hook

22 September 2014

Laurie Caron – Plant Card Latin name: Anaphalis margaritacea (L.) Benth. & Hook Common names: Immortal, Immortal silver, Life-everlasting, Anaphale daisy.  Anaphalis margaritacea is a herbaceous, perennial and widespread in the temperate boreal zone1. It is often found in fields and roadsides (Figure 1). You can easily recognize this plant by its long stem (30-100

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Discoveries

Discoveries – Horticulture Indigo: Biodiversity in your flower beds!

17 September 2014

Laurie Caron – Discoveries By chance last week, I made the discovery on the web from a Quebec company that specializes in the sale of native wild plants in Quebec. These Horticulture Indigo. Since 1994, they specialize in the production of native plants of Quebec and have to their credit over 250 species of seeds

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Popularization

GC Analysis – Part VI. Applied Example of Analysis with Retention Indices

8 September 2014

Alexis St-Gelais – Popularization I wrote some time ago about retention indices in GC-FID and the advantages of using two columns to analyze an essential oil. Since this is a central aspect of the work we do using GC, I wished to detail a real-case analysis, allowing you to understand more clearly our methodology. Throughout

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Popularization

GC Analysis – Part V. FID or MS for Essential Oils?

Alexis St-Gelais – Popularization [Minor addenda to the original text were made on March 23, 2019, and are noted in green] An important task of analytical chemistry is to select the detector that best suits the purpose of an analysis. Each detector has indeed its pros and cons. In the area of essential oils, FID and

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Popularization

GC Analysis – Part IV. Retention Indices

25 August 2014

Alexis St-Gelais – Popularization I mentioned in the first post of this series on GC analyzes that PhytoChemia resorted simultaneously to two capillary columns to analyze essential oils, one polar (Solgel-Wax) and one non-polar (DB-5). The rationale behind this technique will reveal some of the art of interpreting essential oils profiles.  We have seen that

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Popularization

GC Analysis – Part III. Mass Spectrometry Detection (MS)

18 August 2014

Alexis St-Gelais – Popularization My last post gave some details about a detection method commonly used in GC, the FID. Another detector that is widely used for the analysis of volatile compounds, including at PhytoChemia, is the mass spectrometer (MS). Unlike the FID, the MS is a complex detector. Typically, in GC-MS (although other modes

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Popularization

GC Analysis – Part II. The Flame Ionization Detector (FID)

11 August 2014

Alexis St-Gelais – Popularization The first part of this series dealt with the principles of separation of volatile molecules upon analysis by GC. After their separation, the analyst has yet to be able to detect molecules as they leave the capillary column, either to identify or quantify them. At PhytoChemia, we mainly use two types

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