文章基本信息

标题：13 C CP/MAS NMR spectra of pectins: a peak-fitting analysis in the C-6 region
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作者：Synytsya A. ; opíková J. ; Brus J. 等
期刊名称：Czech Journal of Food Sciences
印刷版ISSN：1212-1800
电子版ISSN：1805-9317
出版年度：2003
卷号：21
期号：1
页码：1-12
DOI：10.17221/3471-CJFS
出版社：Czech Academy of Agricultural Sciences
摘要：¹³C CP/MAS NMR spectra of pectin samples were measured and interpreted. The influence of methylesterification and O -acetylation on chemical shifts of pectin carbons was studied using model pectate, pectinates, and their acetylated derivatives. The spectra were analysed also by peak fitting in C-6 region to obtain the values of methylation (DM), amidation (DAm) and acetylation (DAc), degrees. The results were in a good agreement with both convenient methods (photometry, elemental analysis) and the NMR method based on the relative areas of OCH₃ (DM) and CH₃ (DAc) resonances.
关键词：13 C CP/MAS NMR; pectins; peak fitting; degrees of methylation (DM); degrees of acetylation (DAc)