Please use this identifier to cite or link to this item: http://dx.doi.org/10.14279/depositonce-11616
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Main Title: Low-quality animal by-product streams for the production of PHA-biopolymers: fats, fat/protein-emulsions and materials with high ash content as low-cost feedstocks
Author(s): Saad, Victoria
Gutschmann, Björn
Grimm, Thomas
Widmer, Torsten
Neubauer, Peter
Riedel, Sebastian L.
Type: Article
URI: https://depositonce.tu-berlin.de/handle/11303/12816
http://dx.doi.org/10.14279/depositonce-11616
License: https://creativecommons.org/licenses/by/4.0/
Abstract: Objective: The rapid accumulation of crude-oil based plastics in the environment is posing a fundamental threat to the future of mankind. The biodegradable and bio-based polyhydroxyalkanoates (PHAs) can replace conventional plastics, however, their current production costs are not competitive and therefore prohibiting PHAs from fulfilling their potential. Results: Different low-quality animal by-products, which were separated by thermal hydrolysis into a fat-, fat/protein-emulsion- and mineral-fat-mixture- (material with high ash content) phase, were successfully screened as carbon sources for the production of PHA. Thereby, Ralstonia eutropha Re2058/pCB113 accumulated the short- and medium-chain-length copolymer poly(hydroxybutyrate- co -hydroxyhexanoate) [P(HB- co -HHx)]. Up to 90 wt% PHA per cell dry weight with HHx-contents of 12–26 mol% were produced in shake flask cultivations. Conclusion: In future, the PHA production cost could be lowered by using the described animal by-product streams as feedstock.
Subject(s): ralstonia eutropha
animal by-products
fat/protein-emulsion
low-cost feedstocks
medium-chain-length PHA
P(HB-co-HHx)
Issue Date: 26-Dec-2020
Date Available: 12-Mar-2021
Language Code: en
DDC Class: 570 Biowissenschaften; Biologie
Sponsor/Funder: TU Berlin, Open-Access-Mittel – 2020
BMBF, 031B0798A, Bioökonomie International 2017: PHABio-up - Polyhydroxyalkanoate Biopolymere aus tierischen Abfallfetten: Scale-up zur Realisierung einer industriellen Produktion
BMBF, 031B0798C, Bioökonomie International 2017: PHABio-up - Polyhydroxyalkanoate Biopolymere aus tierischen Abfallfetten: Scale-up zur Realisierung einer industriellen Produktion - Teilvorhaben: Feedstock und Produktextraktion
Journal Title: Biotechnology Letters
Publisher: SpringerNature
Publisher DOI: 10.1007/s10529-020-03065-y
EISSN: 1573-6776
ISSN: 0141-5492
TU Affiliation(s): Fak. 3 Prozesswissenschaften » Inst. Biotechnologie » FG Bioverfahrenstechnik
Appears in Collections:Technische Universität Berlin » Publications

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