Clave, Krezell C.Almonidovar, Carlo J.Bovvers, Stephanie C.Cosme, Julie A.Jacang, Trisha M.Gurtiza, John Benedict M.Marzon, Charissa Mae R.2025-10-152025-10-152024-06Clave, K. C., Almonidovar, C. J., Bovvers, S. C., Cosme, J. A., Jacang, T. M., Gurtiza, J. B. M. & Marzon, C. M. R. (2024). Developmentand evaluation of young coconut (Cocos nucifera) coir as dyestuff. [Unpublished Undergraduate Thesis]. Don Mariano Marcos Memorial State University – Mid La Union Campus, City of San Fernando, La Union. Lakasa ti Sirib, DMMMSU Institutional Repository.https://lakasa.dmmmsu.edu.ph/handle/123456789/532Full textDyes are colored organic stuff generally applicable for the coloration of fabrics, paper, cosmetics. etc. (Hussaan el al., 2020). Coconut coir (Cocos nucifera), as a source of natural colorants, has been selected for mordanted poplinand linen fabric coloration. This study aimed to develop and evaluate dyestuff from young coconut coir dyestuff. The researchers utiliced the developmental-descriptive-evaluative research design for the study, leading to a young coconut coir weighed 13kg produced 20liters of crude dye, the dyed poplin and linen produced light color from 1-hour extraction, and I-hour dye application, alum as mordant and 300 concentration. The colorfastness of washing dyed cotton and linen fabric using alum as a mordant has achieved good performance, together with copper sulfate as a mordant. There is a significant difference existed in terms of (a) the boiling lime (lhr-1hr)yieldedat royal poplinand linen fabrics varying changes in color after washing the textile and (b) the colorfastness to sunlight for royal poplin fabric in the boiling time (2hr-lhr). No significant difference existed between the mordant used in colorfastness and washing and sunlight.x, 121 p.: ill. (col. ).enNATURAL SCIENCESColorfastness (Textiles)Thesis