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Poly-3-hydroxybutyrate is a biopolymer which has shown tremendous potential for replacing conventional petroleum-based plastics for plummeting the plastic pollution problem. However, the production cost of PHB is high which makes it less attractive for commercial use. To tackle this challenge, various researchers suggest the search for low-cost substrates and energy efficient technologies for PHB production. In this regard, the waste generated from fruit processing industries or fruit wastes could be pre-processed and fermented for effectively generating PHB. Therefore, the aim of this review was to focus on the methods of fruit waste pre-processing and the effect of fermentation variables on PHB production using fruit waste as a substrate. The relevant research findings on the use of different microorganisms, PHB production conditions and fruit waste-based substrates are also covered. Analysis of various studies revealed that pineapple and mixed fruit waste are effective for PHB production. Copyright © 2021 Elsevier Ltd. All rights reserved.


Ranjna Sirohi, Vivek Kumar Gaur, Ashutosh Kumar Pandey, Sang Jun Sim, Sunil Kumar. Harnessing fruit waste for poly-3-hydroxybutyrate production: A review. Bioresource technology. 2021 Apr;326:124734

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PMID: 33497926

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