1. Department of BioMolecular Sciences, Division of Pharmacognosy, and the Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
2. National Center for Natural Products Research and the Research Institute for Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
3. Department of Chemistry, University of the Free State, 205 Nelson Mandela Drive, Bloemfontein, 9301, South Africa
4. School of Food Science, Washington State University, Pullman, Washington 99164-6376, United States