Evidence map›Paper›PMID 29971506›Full record

ReviewWorld journal of microbiology & biotechnology2018

The role of dissolved oxygen content as a modulator of microbial polyhydroxyalkanoate synthesis.

Warren Blunt, Richard Sparling, Daniel J Gapes, David B Levin, Nazim Cicek

Abstract readReview
PubMed Publisher
In one paragraph

Review in World journal of microbiology & biotechnology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
2.2field-weighted citation impact, top 14% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 47 citations in OpenAlex.

  1. Review
  2. Article
  3. Polyhydroxyalkanoate (PHA) production by landfill isolate Priestia sp. revealed by preparatory glucose-induced tests and genome-annotations.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2025
    Article
  4. Article
  5. Article
  6. Review
  7. PHB production by Bacillus megaterium strain MNSH1-9K-1 using low-cost media.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2024
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. High Cell Density Cultivation ofFrontiers in bioengineering and biotechnology · 2022
    Article
  13. Review
  14. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 2 countries.

Warren BluntDepartment of Biosystems Engineering, University of Manitoba, E2-376 Engineering and Information Technology Complex (EITC), 75A Chancellor's Circle, Winnipeg, MB, R3T 5V6, Canada. umbluntw@myumanitoba.ca.ORCID http://orcid.org/0000-0002-0017-4911
Richard SparlingDepartment of Microbiology, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada.
Daniel J GapesScion Research, Te Papa Tipu Innovation Park, 49 Sala Street, Private Bag 3020, Rotorua, 3046, New Zealand.
David B LevinDepartment of Biosystems Engineering, University of Manitoba, E2-376 Engineering and Information Technology Complex (EITC), 75A Chancellor's Circle, Winnipeg, MB, R3T 5V6, Canada.
Nazim CicekDepartment of Biosystems Engineering, University of Manitoba, E2-376 Engineering and Information Technology Complex (EITC), 75A Chancellor's Circle, Winnipeg, MB, R3T 5V6, Canada.
University of Manitoba · CAMuseum of New Zealand Te Papa Tongarewa · NZ

Funding

Genome Canada Genome Applications and Partnership Program (GAPP)
6 · The paper itself

Abstract

Polyhydroxyalkanoates (PHAs) are a diverse class of bio-polymers synthesized by bacteria, usually during imbalanced growth conditions. Optimizing PHA productivity is highly dependent on the bioreactor oxygen transfer rate (OTR), which is an important consideration for process performance and economics, particularly with increasing scale. Relatively few in-depth studies are available regarding the effect of OTR and dissolved oxygen content (DOC) on PHA formation, synthesis rates, composition, and characteristics. This review examines past research studies on the effect of low DOC environments on production of short-chain length (scl-) PHAs, synthesized by both pure and mixed cultures, in order to identify opportunities and gaps concerning the effect of DOC on production of medium-chain length (mcl-) PHAs, an area that has not been studied in detail. The literature indicates that production of scl-PHA (a reductive process) acts as an electron sink allowing cells to maintain balanced redox state at low DOC. Conversely, production of mcl-PHA via fatty acid de novo synthesis (also a reductive process) does not occur to any significant extent in low DOC environments, while mcl-PHA synthesis from fatty acids (an oxidative process) can be promoted in low DOC environments. The monomer composition, molecular mass, as well as physical and thermal properties of the polymer can change in response to OTR, but further research in this area is required for both scl- and mcl-PHAs. Process design and management of bioreactor OTR in PHA production might therefore be directed by the final application of the polymer rather than cost considerations.

Indexed as

BacteriaBioreactorsCarbohydrate MetabolismCarbohydratesFatty AcidsFermentationOxygenPolyhydroxyalkanoatesCarbohydratesFatty AcidsOxygenPolyhydroxyalkanoatesDissolved oxygenMass transferMicroaerophilicPolyhydroxyalkanoates

Identifiers

PMID29971506
OpenAlexW2811197413

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.