Polyhydroxyalkanoates hydrolysates

Glycosidic bonds, as well as peptide bonds and most ester bonds (e.g., in proteins, nucleic acids, polysaccharides, and polyhydroxyalkanoic acids), are cleaved by hydrolysis. A number of different enzymes are involved, depending of the type of bond to be hydrolysed proteases, esterases, and glucoside hydrolases. 

Biological Production of Polyhydroxyalkanoates frran Lignocellulosic Hydrolysates 85... 

Biological Production of Polyhydroxyalkanoates from Lignocellulosic Hydrolysates... 

Lopes M, Rocha R, Zanotto S, Gomez J, Silva L (2009) Screening of bacteria to produce polyhydroxyalkanoates from xylose. World J Microbiol Biotechnol 25(10) 1751-1756 Lopes MSG, Freire RKB, Chouman K, Gomez JGC, da Silva LF (2010) Engineered bacteria For PHB production from hemicellulosic hydrolysate. In International symposium on biopolymers, Stuttgart, p 72... 

Microbial polymers (e.g. poly(3)-hydroxybutyrate-hydroxyvalerate) are excreted or stored by micro organisms cultivated on starch hydrolysates or lipidic mediums. Isolation and purification costs could be high for those products that are obtained Ifom complex mixtures. Monsanto stopped the commercialisation of its product Biopol in 1999. Since then, production has been low but some new producers are entering the market (e.g. Coopeazucar in Brazil which has built new facilities for a pilot plant production of these polyhydroxyalkanoates). 

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