Oxidized Polyethylene Wax as a Potential Carbon Source for PHA Production

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2016
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Abstract
We report on the ability of bacteria to produce biodegradable polyhydroxyalkanoates (PHA) using oxidized polyethylene wax (O-PEW) as a novel carbon source. The O-PEW was obtained in a process that used air or oxygen as an oxidizing agent. R. eutropha H16 was grown for 48 h in either tryptone soya broth (TSB) or basal salts medium (BSM) supplemented with O-PEW and monitored by viable counting. Study revealed that biomass and PHA production was higher in TSB supplemented with O-PEW compared with TSB only. The biopolymers obtained were preliminary characterized by nuclear magnetic resonance (NMR), gel permeation chromatography (GPC), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). The detailed structural evaluation at the molecular level was performed by electrospray ionization tandem mass spectrometry (ESI-MS/MS). The study revealed that, when TSB was supplemented with O-PEW, bacteria produced PHA which contained 3-hydroxybutyrate and up to 3 mol % of 3-hydroxyvalerate and 3-hydroxyhexanoate co-monomeric units. The ESI-MS/MS enabled the PHA characterization when the content of 3-hydroxybutyrate was high and the appearance of other PHA repeating units was very low.
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radecka2016materialsoxidized Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Iza Radecka;Victor Irorere;Guozhan Jiang;David Hill;Craig Williams;Grazyna Adamus;Michal Kwiecień;Adam A. Marek;Jan Zawadiak;Brian Johnston;Marek Kowalczuk;Radecka, Iza;Irorere, Victor;Jiang, Guozhan;Hill, David;Williams, Craig;Adamus, Grazyna;Kwiecień, Michal;Marek, Adam A.;Zawadiak, Jan;Johnston, Brian;Kowalczuk, Marek;
Journal Materials (Basel, Switzerland)
Year 2016
DOI
10.3390/ma9050367
URL
https://www.mdpi.com/1996-1944/9/5/367
Keywords
Mass spectrometry polyhydroxyalkanoates ralstonia eutropha h16 oxidized pe wax medium chain length pha (mcl-pha)

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