Metanawin, Siripan, Apichart Sonthisombat, Mahamasuhaimi Masae, Sumonman Niamlang, Jantana Sutdaen, Pannarai Rug-ngarn, Orathai Tangsirinaruenart, Tanapak Metanawin, and Sarunya Puakpong. 2026. “Valorization of polyphenol-rich extracts from Oroxylum indicum (L.) kurz outer stem bark as sustainable textile colourants: Comparison concerns selected GOTS 7.0 colour fastness criteria on effects of six mordants and pre-, meta- and post-mordanting techniques on dyeing properties”. Frontiers in Engineering Innovation Research 24 (2):20-34. https://doi.org/10.60101/feir.2026.269785.