Methods All chemical reagents were purchased from Sigma Aldrich Canada (Oakville ON) unless otherwise indicated. All spectrophotometric and fluorescence analyses were conducted using a 1420 Victor 2 spectrophotometer (Perkin Elmer; Woodbridge ON). Turmeric was purchased from Amoros Nature, S.L. Hostaliric-Girona, Spain (Lot number 16.01744; Certificate of Analysis provided in Supplementary Files).