摘要: In this study, Trapa natans nut collected from the costs of Inkumu-Bartin was analyzed according to its lignin content. Acid-insoluble content determined TAPPI T222om-02 as 28.31%. TGA and FTIR analyses were performed. analysis indicated that contained cellulose, hemicelluloses lignin. The peaks at 1506-1510 cm -1 in both samples are characteristic for components due C = O COO-non-symmetric stretching vibrations aromatic rings structure. 1510 -s peak is found literature lignin’s fingerprint peak. The 1230-1270 band show guayasil ring with CO tension hemicelluloses. Around 900, 1025, 1030 1050 bands cellulose’s O-H, C-H C-O-C type bonds seen. When analyzes examined, approximately 4.5% sample lost 30 °C 200 °C. At these intervals, generally lose volatile constituents moisture. From 271 4.6% weight lost. decrease range may be decomposition cellulose DTG curve shows maxima weight-loss occurring 349 271-352 about 50%. Pure sample’s results 10%, 50%, 70% weight-losses 233 °C, 489 1167 respectively. According results, dominantly small quantities present trapa samples.