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    Chemical Modifi cation of Microbial Poly(γ-glutamic acid): Progress and Perspectives

    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… More >

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