Eco-friendly bioplastics from Cajá (Spondias mombin) peel waste: Polyhydroxyalkanoate production via Brevibacterium sp.

Document Type : Original Article

Authors

1 Centro de Tecnologias Estratégicas do Nordeste (CETENE), Recife, Brazil.

2 Universidade Federal de Pernambuco (UFPE), Departamento de Bioquímica, Recife, Brazil.

3 Universidade Federal de Pernambuco (UFPE), Departamento de Antibióticos, Recife, Brazil.

4 Universidade Federal Rural de Pernambuco (UFPE), Recife, Brazil.

Abstract

Polyhydroxyalkanoates (PHA) are a family of intracellular biopolymers biodegradability and biocompatibility produced by numerous bacteria. The search for new PHA-producing microorganisms is crucial for expanding bioplastic production, as seen with Brevibacterium sp. In this study, hydrolysates of Spondias mombin peels were used as a carbon source for PHA synthesis through the fermentation of Brevibacterium sp. This process contributes to the bioeconomy by producing biodegradable plastic from waste materials that would otherwise be discarded. For morphological characterization of the bacterial isolate, optical microscopy, scanning electron microscopy, and transmission electron microscopy analyses were performed. Molecular identification was ensured by analysis of the 16S rRNA gene. The biopolymer was characterized by infrared spectroscopy, thermal analysis, and scanning electron microscopy. The polyhydroxybutyrate produced by Brevibacterium sp. showed characteristic infrared stretching. The Spondias mombin peels were efficient carbon sources for PHA production from the biosynthesis of a bacterium for bioplastic production: Brevibacterium sp. Here is the first report, to our knowledge, on the production of PHA from cajá peel (a fruit typical of the northern and northeastern regions of Brazil) using Brevibacterium sp. as the biopolymer producer.

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History

  • Receive Date: 03 October 2024
  • Revise Date: 05 November 2024
  • Accept Date: 18 May 2025

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