Investigation of fiber maturity measurement by cross-sectional image analysis and Fourier transform infrared spectroscopy on developing and developed upland cottons
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Cotton fiber maturity is an important fiber physical and quality property that impacts downstream fiber processing. Fiber maturity refers to the degree of secondary cell wall thickening. The reference method for fiber maturity measurement is to quantify the secondary cell wall area relative to the perimeter of the fiber via cross-sectional image analysis, a tedious and slow process. A number of approaches have been developed which attempt to measure fiber maturity rapidly. The approach employed in this work is based on the use of attenuated total reflection Fourier transform infrared spectroscopy, and simple algorithms were developed from the spectra to estimate fiber maturity directly. To validate the efficacy of this approach against cross-sectional image analysis, two distinct fiber sets were examined that included a set of developing fibers and a diverse set of developed fibers. Comparison of image analysis and infrared maturity results imply a consistency and equivalency between the two maturity measurements.
KeywordsFourier transform infrared spectroscopy Attenuated total reflection Cotton fiber Cellulose Maturity Algorithm analysis
The authors thank Tracy Condon of USDA-ARS-SRRC for technical assistance in collecting the experimental samples and data. This project was financially supported by the USDA-ARS CRIS project no. 6054-21000-017-00D. Authors also thank Drs. Bugao Xu of University of North Texas and Noureddine Abidi of Texas Tech University for professional insight to improve the manuscript. Mention of a product or specific equipment does not constitute a guarantee or warranty by the U.S. Department of Agriculture and does not imply its approval to the exclusion of other products that may also be suitable.
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