Evidence map›Paper›PMID 19277742›Full record

ArticleJournal of industrial microbiology & biotechnology2009

Production of the Aspergillus aculeatus endo-1,4-beta-mannanase in A. niger.

Petrus J van Zyl, V Moodley, S H Rose, R L Roth, W H van Zyl

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In one paragraph

Article in Journal of industrial microbiology & biotechnology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
2.5field-weighted citation impact, top 12% 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

10 citing papers in PubMed, 37 citations in OpenAlex.

  1. Article
  2. Article
  3. Biochemical properties of a native β-1,4-mannanase fromBiochemistry and biophysics reports · 2021
    Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
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 1 country.

Petrus J van ZylCSIR Biosciences, Private Bag X2, Modderfontein, 1645, South Africa. pvanzyl@csir.co.za
V Moodley
S H Rose
R L Roth
W H van Zyl
Stellenbosch University · ZAMylan (South Africa) · ZA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The beta-mannanase gene (man1) from Aspergillus aculeatus MRC11624 (Izuka) was patented for application in the coffee industry. For production of the enzyme, the gene was originally cloned and expressed in Saccharomyces cerevisiae. However the level of production was found to be economically unfeasible. Here we report a 13-fold increase in enzyme production through the successful expression of beta-mannanase of Aspergillus aculeatus MRC11624 in Aspergillus niger under control of the A. niger glyceraldehyde-3-phosphate dehydrogenase promoter (gpd (P)) and the A. awamori glucoamylase terminator (glaA(T)). The effect of medium composition on mannanase production was evaluated, and it was found that the glucose concentration and the organic nitrogen source had an effect on both the volumetric enzyme activity and the specific enzyme activity. The highest mannanase activity levels of 16,596 nkat ml(-1) and 574 nkat mg(-1) dcw were obtained for A. niger D15[man1] when cultivated in a process-viable medium containing corn steep liquor as the organic nitrogen source and high glucose concentrations.

Indexed as

Genetic EngineeringAspergillusbeta-MannosidaseCulture MediaFungal ProteinsGene ExpressionPromoter Regions, Geneticbeta-MannosidaseCulture MediaFungal Proteins

Identifiers

PMID19277742
OpenAlexW2017587955

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.