Structural physicochemistry of polysaccharide molecules. Vibrational spectra and structure of water soluble cellulose and starch ethers

Applications of Vibrational Spectroscopy to the Analysis of Polysaccharide and Hydrocolloid Ingredients

“…Differences within this region between the two starches have been highlighted by Fourier self-deconvolution (FSD) of their spectra to resolve the components of the complex ν(OH) band. 67 (FSD is a numerical technique for artificially reducing the width of spectral bands.) Qualitative and quantitative information can then be obtained by comparing the number, position, and intensity of the bands with the deconvolved spectra.…”

“…With the advancement of fast and robust spectrometers and the development of quantitative software algorithms (chemometric methods), e.g., PLS regression, principal component analysis (PCA), artificial neutral network (ANN), discriminant analysis (DA), and principal variables (PV) analysis, 37 vibrational spectroscopy is becoming widely adopted in both quantitative and qualitative studies, such as the nondestructive analysis of pectins. 73 IR spectroscopic determination of DS was successfully developed for starch derivatives such as acetates 74 and ethers, 67 as well as carboxymethylated gellan 75 and cellulose. 67 Figure 5 shows the Raman spectra (550-430 cm −1 ) of carboxymethylated starches at different DS before and after deconvolution, and a significant change in the vibrational band at 480 cm −1 was observed.…”

“…73 IR spectroscopic determination of DS was successfully developed for starch derivatives such as acetates 74 and ethers, 67 as well as carboxymethylated gellan 75 and cellulose. 67 Figure 5 shows the Raman spectra (550-430 cm −1 ) of carboxymethylated starches at different DS before and after deconvolution, and a significant change in the vibrational band at 480 cm −1 was observed. 67 Raman spectroscopy has also been used to determine DS in acetylated starch 76 and benzyl-modified waxy maize starch.…”

“…67 Figure 5 shows the Raman spectra (550-430 cm −1 ) of carboxymethylated starches at different DS before and after deconvolution, and a significant change in the vibrational band at 480 cm −1 was observed. 67 Raman spectroscopy has also been used to determine DS in acetylated starch 76 and benzyl-modified waxy maize starch. 77 For NSP derivatives, Raman spectroscopy has been used to identify new or substituted groups and to monitor the reaction kinetics.…”

Physico Chemical Analysis of Cetyl Pyridinium Chloride (CPC) Blended by Cellulose solution

“…It has variety of applications in day to day life. The combined occurrence of surfactant and cellulose derivatives is found in diverse products such as cosmetics, paints, detergents, food, polymer synthesis and formulations of drugs and pesticides [10][11]. The presence of a non ionic cellulose polymer in aqueous solutions of cationic surfactants causes changes in the physical properties of the micelle aggregated formed by the surfactant.…”