<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Nair, Pranav</style></author><author><style face="normal" font="default" size="100%">Navale, Govinda R.</style></author><author><style face="normal" font="default" size="100%">Dharne, Mahesh S.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Poly-gamma-glutamic acid biopolymer: a sleeping giant with diverse applications and unique opportunities for commercialization</style></title><secondary-title><style face="normal" font="default" size="100%">Biomass Conversion and Biorefinery</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Commercialization</style></keyword><keyword><style  face="normal" font="default" size="100%">Multi-nutritious</style></keyword><keyword><style  face="normal" font="default" size="100%">Poly-gamma-glutamic acid</style></keyword><keyword><style  face="normal" font="default" size="100%">Waste valorization</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2023</style></year><pub-dates><date><style  face="normal" font="default" size="100%">APR</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Poly-gamma-glutamic acid (gamma-PGA) is a biodegradable, non-toxic, ecofriendly, and non-immunogenic biopolymer. Its phenomenal properties have gained immense attention in the field of regenerative medicine, the food industry, wastewater treatment, and even in 3D printing bio-ink. The gamma-PGA has the potential to replace synthetic non-degradable counterparts, but the main obstacle is the high production cost and lower productivity. Extensive research has been carried out to reduce the production cost by using different waste; however, it is unable to match the commercialization needs. This review focuses on the biosynthetic mechanism of gamma-PGA, its production using the synthetic medium as well as different wastes by L-glutamic acid-dependent and independent microbial strains. Furthermore, various metabolic engineering strategies and the recovery processes for gamma-PGA and their possible applications are discussed. Finally, highlights on the challenges and unique approaches to reduce the production cost and to increase the productivity for commercialization of gamma-PGA are also summarized.&lt;/p&gt;
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