Pelargonidin chloride (Phytoplan), delphinidin chloride
(Phytoplan), dodecyl gallate (Sigma-Aldrich), hexadecanoic
acid (Sigma-Aldrich) and the poly(lactic acid)
PLA 4060D (Natureworks) were purchased from commercial
suppliers. The PLA 4060D was dried for at least
12 h at 45˚C immediately before use. All other materials
were used as received.