Sebastián Muñoz-Guerra*, Montserrat García-Alvarez, José A. Portilla-Arias
Journal of Renewable Materials, Vol.1, No.1, pp. 42-60, 2013, DOI:10.7569/JRM.2012.634105
Abstract Poly(γ-glutamic acid) (PGGA) is an edible polypeptide excreted by certain bacteria that is presently accessible
on a semi-industrial scale. Chemically, it is a nylon 4 derivative bearing a carboxylic side group attached to
the fourth carbon of the repeating unit. Although this biopolymer is being exploited in the food, agriculture
and cosmetic sectors, its use in massive applications as packaging or coating is still unknown mainly due
to its instability in wet environments and unsuitability to be processed by common techniques. Chemical
modifi cation of PGGA involving esterifi cation or amidation of the carboxylic group is the approach explored
the… More >
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