The South African Journal of Botany has retracted a 2012 paper that claimed a variety of herbal extracts have antioxidant and anti-fungal properties, due to errors in “at least” one figure.
Here’s the notice for “Contribution of herbal principles towards cytoprotective, antioxidant and anti-Rhizopus activities:”
This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).
After lengthy correspondence and careful consideration, this article has been retracted at the request of the Editor-in-Chief. The authors notified the Journal of scientific errors in the article, at least in Fig. 2b.
Here’s the abstract:
Herbal extracts (twenty extracts) obtained from 20 medicinal and aromatic plants were evaluated for their cytoprotectivity and antioxidant properties. Total phenol content and anti-Rhizopus activity were also determined. Results indicated that, out of 20 extracts evaluated, radical scavenging capacity and anti-Rhizopus activity were observed in aqueous extract of Ocimum tenuiflorum, Leucas aspera, Terminalia arjuna, Glycyrrhiza glabra and Nyctanthes arbortristis in a dose dependent manner. The total phenolic content was observed to be 1289, 3837, 372, 2831 and 1892μg GAE/g for O. tenuiflorum, L. aspera, T. arjuna, G. glabra and N. arbortristis respectively. The antioxidant activity correlates with the phenolic content of the extracts. At 1mg/ml the above extracts showed 98% protection on erythrocyte and buccal cell oxidation. In DNA oxidation studies, higher protection was observed in O. tenuiflorum, L. aspera and N. arbortristis extracts. These results demonstrate that the cytoprotectivity and antioxidant potency of these extracts could be the basis for their alleged health promoting potential. They could serve as new sources of natural antioxidants or nutraceuticals with potential applications in reducing oxidative stress conditions.
The paper does not yet appear to have been cited.
We’ve contacted the author and journal editor, and will update the post if we hear back.