ISHS Acta Horticulturae 724: IX International Symposium on the Processing Tomato
CHEMICAL IDENTIFICATION OF POLYSACCHARIDES FROM SOLID WASTES OF TOMATO PROCESSING |
| Authors: | G. Strazzullo, A. Poli, L. Lama, R. De Prisco, K. La Pastina, B. Nicolaas |
| Keywords: | polysaccharides, raw material, tomato industry, NMR, viscosity |
| Abstract:
Polysaccharides from solid wastes of the processing tomato industry (Lycopersicon esculentum ‘Hybrid Rome’) were extracted using a simple and rapid method, purified and chemically characterised. The yield of biopolymers represented 7.5 % of lyophilised biomass. The polysaccharide showed a complex structure. On the basis of NMR data, the repeating unit was constituted by eight monosaccharides, three of them with an  manno configuration, four residues with an gluco-galacto configuration and one residue showing a  gluco-galacto configuration.
The specific viscosity ( ) of the biopolymer, performed at different values of concentration and pH, showed a dependence with respect to the concentration, and the maximum value of viscosity was obtained at pH 3.0.
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