Glycerol, mannitol and sorbitol concentrations increased significantly in infected berries along with free
galacturonic acid, arabinose, galactose, rhamnose, mannose and xylose.
For the analysis of dietary fibre, pepsin was obtained from Merck (Darmstadt, Germany), pancreatin from Fluka (Sigma-Aldrich), and
galacturonic acid, chloroform, monohydrate and myo-inositol (internal standard) from Sigma Chemical Co.
The enzymatic activity was expressed in micromoles of
galacturonic acid produced per gram of fresh pulp mass per minute ([micro]mol
galacturonic acid [[g FM].
One unit of enzyme is equal to the amount of enzyme which catalyzes the formation of 1 u M of
galacturonic acid.
The reducer groups were determined according to the technique described by Somogy and modified by Nelson (1944), using
galacturonic acid as standard.
Fermentation from pectin produced only traces of
galacturonic acid, formic acid, lactic acid, acetic acid and ethanol.
Roughly 65% of the dry matter mass can be isolated as high value products being: microcellulose fibers (MCF) (33%), arabinose (16%) and
galacturonic acid (16%).
The carbohydrate portion contains a variety of insoluble polysaccharides (containing rhamnose, arabinose, galactose,
galacturonic acid, glucose, xylose, and mannose) and soluble components, such as sucrose, raffinose, and stachyose (Eldrige et al.
oleracea containig two main fractions one of them rich in
galacturonic acid and the other one rich in arabinogalactan and in xylose (Garti et al.
Citrus peels are mainly made up of pectin (around 30% by mass), which is rich in
galacturonic acid [31].
2%) dominated in VW whereas for the soluble NSP fraction,
galacturonic acid (4.
citrus, apple), all of which share a common basic structure comprising a block co-polymer of 1,4-linked
galacturonic acid and 1-2-linked rhamnose with side branches of either 1,4-linked ?
