According to a new study, more than 40% of curcumin supplements bought in France do not have all the correct information on the label.
A report, published in the Journal of Pharmaceutical and Biomedical Analysis, highlights that in many cases there is a problem of quality control of supplements based on turmeric or rather its main active ingredient, curcumin.
Analyzing the quality of 30 food supplements, purchased in French stores or online, researchers at the Université Paul Sabatier in Toulouse found that more than 40% of these products did not carry correct information on the label.
More specifically, the labels were neither complete nor completely clear to consumers. Undoubtedly the most serious thing highlighted is that the actual quality of the active ingredients present in the supplement did not always correspond to what the product promised.
The French researchers, who analyzed the supplements along with 5 turmeric rhizomes, found that only 58% of the products sold in stores and online guaranteed the amount of active ingredients (curcuminoids and piperine) reported on the label.
@Journal of Pharmaceutical and Biomedical Analysis
The authors of their study stated:
A preliminary investigation with ultra-high performance liquid chromatography coupled with the detection of high resolution mass spectrometry revealed a large disparity in their chemical composition which was confirmed by a more thorough qualitative and quantitative analysis.
They also added that when only a quantity of curcumin is indicated on the label, it is not possible for the consumer to understand what it corresponds to, whether it corresponds to curcumin alone or to demethoxy curcumin (DMC) and bisdemethoxy curcumin (BDMC), natural congeners of curcumin.
Furthermore, supplements never specify the quantities of turmerones, substances that have many pharmacological properties and that affect the absorption of curcumin.
This study refers to the supplements on the French market, so we do not know if the situation is the same even for those sold in our country.
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Fonte: Journal of Pharmaceutical and Biomedical Analysis
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