Simultaneous quantification of cellulose and pectin in tobacco using a robust solid-state NMR method

Area of Science:

• Analytical Chemistry
• Plant Biochemistry
• Materials Science

Background:

• Cellulose and pectin are key tobacco cell wall components influencing undesirable compound formation and tobacco harmfulness.
• Traditional analytical methods struggle with simultaneous quantification of cellulose and pectin.
• Accurate quantification is crucial for understanding tobacco composition and potential risks.

Purpose of the Study:

• To develop a novel method for the simultaneous quantification of cellulose and pectin in tobacco.
• To establish an efficient and accurate analytical technique for tobacco cell wall components.
• To provide a faster and more practical alternative to existing chemical methods.

Main Methods:

• Development of a solid-state ¹³C cross-polarization by multiple contact periods (multiCP) NMR method.
• Optimization of multiCP NMR parameters for enhanced signal-to-noise ratio (SNR) and reduced measurement time.
• Application of simple sample preparation and spectra deconvolution techniques.

Main Results:

• The multiCP NMR method achieved simultaneous quantification of cellulose and pectin in tobacco.
• The developed method demonstrated comparable results to direct polarization (DP) NMR but with significantly reduced measurement time (one-thirtieth).
• The technique proved rapid, practicable, and provided satisfactory SNR for analysis.

Conclusions:

• The solid-state ¹³C multiCP NMR method is effective for simultaneous quantification of cellulose and pectin in tobacco.
• This approach offers a rapid, practical, and promising alternative to traditional chemical analyses.
• The method provides valuable technical support for the simultaneous quantification of cell wall substances in biological samples.