Study on Macrostructure and Fourier Transform Infrared Spectroscopy of Cornstalk

As a biological by-product, cornstalk will pose a huge threat to the development of sustainable agriculture and environmental protection if it is not fully utilized. In this study, the macrostructure was characterized by optical camera and the chemical composition of cornstalk rind and cornstalk pith was characterized by Fourier transform infrared spectroscopy (FTIR). The test results show that the cornstalk was divided into rind and pith macroscopically, the cornstalk is smooth outside, and the pith is a sponge-like structure, the fiber structure evenly distributed on the pith. FTIR analysis showed that the cornstalk was presumed to be aliphatic compounds containing C-H chains and rich in fatty acids and/or ketones, and the main components include cellulose and lignin. The results of this study provide new inspiration and reference for the post-processing of cornstalks.