Abstract
Fully methyl-esterified, water-soluble citrus pectin was partially hydrolysed with alkali to different degrees of esterification (DE). High-field 13C-NMR spectroscopy of the products showed that ester carbonyl carbons appeared as four signals due to different influences from neigh-bouring sugar residues (free or methyl-esterified galactosyluronic acid). Based on the relative peak areas of these signals, it was deduced that alkaline de-esterification occurred randomly. The distribution of methyl ester groups was also found to be random in water-soluble native pectins of tobacco (DE 20) and papaya (DE 70).
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
