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Proceedings Paper

Development of simple algorithm for direct and rapid determination of cotton maturity from FT-IR spectroscopy
Author(s): Yongliang Liu; Devron Thibodeaux; Gary R. Gamble
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Paper Abstract

Fourier transform infrared (FT-IR) spectra of seed and lint cottons were collected to explore the potential for the discrimination of immature cottons from mature ones and also for the determination of actual cotton maturity. Spectral features of immature and mature cottons revealed large differences in the 1200-900 cm-1 region, and such spectral distinctions formed the basis on which to develop simple three-band ratio algorithm for classification analysis. Next, an additional formula was created to assess the degree of cotton fiber maturity by converting the three-band ratios into an appropriate FT-IR maturity (MIR) index. Furthermore, the MIR index was compared with parameters derived from traditional image analysis (IA) and advanced fiber information system (AFIS) measurements. Results indicated strong correlations (R2 > 0.89) between MIR and MAFIS and between MIR and MIA among either International Cotton Calibration (ICC) standards or selected cotton maturity references. On the other hand, low correlations between the pairs were observed among regular cotton fibers, which likely resulted from the heterogeneous distribution of structural, physical, and chemical characteristics in cotton fibers and subsequent different sampling specimens for individual and independent measurement.

Paper Details

Date Published: 12 May 2011
PDF: 9 pages
Proc. SPIE 8032, Next-Generation Spectroscopic Technologies IV, 803210 (12 May 2011); doi: 10.1117/12.883025
Show Author Affiliations
Yongliang Liu, USDA, Agricultural Research Service (United States)
Devron Thibodeaux, USDA, Agricultural Research Service (United States)
Gary R. Gamble, USDA, Agricultural Research Service (United States)

Published in SPIE Proceedings Vol. 8032:
Next-Generation Spectroscopic Technologies IV
Mark A. Druy; Richard A. Crocombe, Editor(s)

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