Polymers of uronic acids (for example, glucuronic acid, galacturonic acid); the pectins are polyuronides.
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References in periodicals archive ?
Therefore, most of the polyuronides (68%), probably ester cross-linked within the cell wall matrix, were still contained in the residue from the polysaccharide extraction.
A bound form of silicon in glycosaminoglycans and polyuronides. Proc Natl Acad Sci U S A.
[42, 43] revealed the presence of reducing sugars, polyuronides, alkaloids, and anthocyanosides in the ethanol, water, and chloroform extracts with the water fraction containing triterpenes in addition.
Redgwell, "Changes to physical properties of the cell wall and polyuronides in response to heat treatment of 'Fuyu' persimmon that alleviate chilling injury," Journal of the American Society for Horticultural Science, vol.
* Identification of polyuronides: 2 ml of the extract were added dropwise in a test tube, where 10 ml of acetone have been placed.
[14] proposed a method based on high-performance anion-exchange chromatography to simultaneously determine uronic acids including DGuA in some polyuronides. Although the results were consistent on a qualitative basis, the quantification failed to yield the expected amount of uronic acids due to the incomplete release and partial degradation during acid hydrolysis.
Breakdown of polyuronides has been found to be started at mid-softening stages in fruits such as avocado and tomato, or during later stages of fruit softening in melon and peach (Brummell, 2006).
Softening of strawberry is mainly due to the presence of polygalacturonase which solubilizes and degrades the cell wall polyuronides (Huber, 1984; Nogata et al 1993).
Stoichiometric depolymerization of polyuronides and glycosaminoglycuronans to monosaccharides following reduction of their carbodiimide-activated carboxyl groups.
"A bound form of silicon in glycosaminoglycans and polyuronides." Proc Nat Acad Sci, 1973; 70:1608-1612.