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Browsing University of Hertfordshire by Author "Owen, Jade"
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Method Development for the Determination of Elements in Hypericum perforatum L. (St John’s wort) Herb and Preparations using ICP-OES and Microwave Digestion
Owen, Jade; Evans, Sara; Guirguis, Amira; Kellett, Kathryn; Stair, Jacqueline (2017-05-31)Objectives: A method was developed to analyze St John's wort (Hypericum perforatum L.) herb and preparations using inductively coupled plasma-optical emission spectroscopy (ICP-OES) to determine the quantity of 11 elements ... -
Presence of metals in herbal extracts
Guirguis, Amira; Owen, Jade; Stair, Jacqueline (2012-11-06)Do metals from raw herbs transport into herbal preparations during manufacture? Amira Guirguis and colleagues take a look at the issue using St John’s wort as an example.