Increased sedimentation of a <i>Pseudomonas-Saccharomyces</i> microbial consortium producing medium chain length polyhydroxyalkanoates

Chang Liu; Lin Qi; Songyuan Yang; Yun He; Xiaoqiang Jia

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Increased sedimentation of a Pseudomonas-Saccharomyces microbial consortium producing medium chain length polyhydroxyalkanoates

Biotechnology and Bioengineering | Updated：2026-01-06

- Increased sedimentation of a Pseudomonas-Saccharomyces microbial consortium producing medium chain length polyhydroxyalkanoates
- Increased sedimentation of a Pseudomonas-Saccharomyces microbial consortium producing medium chain length polyhydroxyalkanoates
- 中国化学工程学报（英文版） 2019年27卷第7期页码：1659-1665
- Affiliations：
  
  1. Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University,Tianjin,China,300072
  2. Key Laboratory of Systems Bioengineering(Tianjin University), Ministry of Education,Tianjin,China,300072
  3. SynBio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering,Tianjin,China,300072
- Author bio：
- Funds：
- DOI：
  中图分类号：
- 纸质出版：2019
- Accepted：
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Chang Liu, Lin Qi, Songyuan Yang, 等. Increased sedimentation of a Pseudomonas-Saccharomyces microbial consortium producing medium chain length polyhydroxyalkanoates[J]. 中国化学工程学报（英文版）, 2019,27(7):1659-1665.

microbial consortium producing medium chain length polyhydroxyalkanoates[J]. 中国化学工程学报, 2019, 27(7): 1659-1665.
Chang Liu, Lin Qi, Songyuan Yang, 等. Increased sedimentation of a Pseudomonas-Saccharomyces microbial consortium producing medium chain length polyhydroxyalkanoates[J]. 中国化学工程学报（英文版）, 2019,27(7):1659-1665. DOI：

microbial consortium producing medium chain length polyhydroxyalkanoates[J]. 中国化学工程学报, 2019, 27(7): 1659-1665. DOI：

摘要

Abstract

Concerns about feasibility

separability

settleability

efficiency once hampered studies on polyhydroxyalkanoates (PHAs) production

which mainly focused on single strain microorganism or activated sludge rather than artificial microbial consortia. Here

a medium chain length PHAs (mcl-PHAs) producing

Pseudomonas-Saccharomyces

consortium with xylose as the main substrate was studied. Mcl-PHAs accumulation increased from 12.69 mg·L

-1

to 152.3 mg·L

-1

without any optimization method. The presence of

Saccharomyces cerevisiae

though in a relatively low concentration

improved the sedimentation of cell mass of the mixed culture by 60%. Reasons for better sedimentation of the consortium were complex:first

the length of

Pseudomonas putida

increased two to three times in the consortium; second

the positive surface charge of

P. putida

was neutralized by

S. cerevisiae

; third

the adhesion proteins on the surface of

S. cerevisiae

interacted with the

P. putida

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Increased sedimentation of a Pseudomonas-Saccharomyces microbial consortium producing medium chain length polyhydroxyalkanoates

Increased sedimentation of a Pseudomonas-Saccharomyces microbial consortium producing medium chain length polyhydroxyalkanoates

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摘要

Abstract

关键词

Keywords

references