Retracted: Production of Gymnemic Acid Depends on Medium, Explants, PGRs, Color Lights, Temperature, Photoperiod, and Sucrose Sources in Batch Culture of Gymnema sylvestre

The Scientific World Journal has retracted the article titled “Production of Gymnemic Acid Depends on Medium, Explants, PGRs, Color Lights, Temperature, Photoperiod, and Sucrose Sources in Batch Culture of Gymnema sylvestre” [1]. As raised on PubPeer, figure panels are duplicated within the article and many also appear in the authors' other publications in Spanish Journal of Agricultural Research [2], Protocols for In Vitro Cultures and Secondary Metabolite Analysis of Aromatic and Medicinal Plants [3], AgroFOOD industry hi-tech [4], Acta Chromatographica [5], 2014 4th International Conference on Biotechnology and Environment Management, IPCBEE [6], and KMITL Science and Technology Journal [7]. The authors did not provide the original images or the raw data, and the Editorial Board found their response was not satisfactory and recommended retraction. Details of the main concerns, in which images are reused though they do not represent the same experiments, are as follows: (i) Figures 1(b), 1(g), and 1(k) in this article appear to be the same as Figures 2F, 2H, and 2C, respectively, in A. B. A. Ahmed, R. Pallela, A. S. Rao, M. V. Rao, R. Mat Taha, “Optimized Conditions for Callus Induction, Plant Regeneration and Alkaloids Accumulation in Stem and Shoot Tip Explants of Phyla nodiflora,” Spanish Journal of Agricultural Research 2011 9(4), 1262-1270 [2]. However, the articles study different species, Gymnema and Phyla.