Pectin processing wastes

Interactions studies between some divalents metal ions and pectins from citms and sugar-beet revealed that the chemical structure of the latter, namely the presence of acetyl functions, induces differences of binding process whereas the scale of selectivity was not affected. Some further studies could be carried out on the correlation between the binding mode and the degree of acetylation. Lastly, pectins showed a clear scale of selectivity towards heavy metals with high capacities of binding which make them suitable to be used in waste-waters depollution. 

Nearly 5 million metric tons of citrus peel and pulp waste materials are produced annually In the manufacturing of concentrated citrus juices In Florida. Although these materials are currently processed Into cattle feed, they are rich In polysaccharides and can be considered as a source of dietary fiber. Alcohol-Insoluble solids (AIS) of 3 different fractions of the processing residues discharged from commercial juice manufacturing equipment were analyzed for pectin, easily hydrolyzable polysaccharides, and cellulose. Two varieties of orange and one of grapefruit that are the predominant citrus fruit used in Juice production were included In this study. 

Wang et al. [157] proposed Pectin and modified pectin differ in the structure of the chains in which the modified version of pectin is shorter in length, non-branched, and galactose-rich. These differences in structure may be exploited for the removal of heavy metals. Durian Durio zibethinus) rind, that is regarded as agri-food waste was processed into... 

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