I am currently having conduct a study regarding the total phenolic content of a plant extract; however, I cannot determine if a 42.7 mg/g gallic acid equivalent phenolic content is high or not.
There is not standard methods and the Folin-Ciocalteu method you probably used is prone to a number of artefacts, like reacting with ascorbic acid, proteins .... and widely different responses with different polyphenolic molecules. So no, to compare phenolic contents across species you must actually quantify the different polyphenols using LC.
Anyway if it is an extract (dry?) 42.7 mg/g is not a lot, even using gallic acid.
There is not standard methods and the Folin-Ciocalteu method you probably used is prone to a number of artefacts, like reacting with ascorbic acid, proteins .... and widely different responses with different polyphenolic molecules. So no, to compare phenolic contents across species you must actually quantify the different polyphenols using LC.
Anyway if it is an extract (dry?) 42.7 mg/g is not a lot, even using gallic acid.
Phillip Morris and Catherine M G C Renard
My mistake.. it's on %w/w; thus,
42.7 mg GAE/100g
Can I consider this high?
Thank you very much. I really appreciate your answers. :)
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