Cited by 56Biofuel production and bioconversionSeaweed-derived Bioactive CompoundsAlgal biology and biofuel production

Bioethanol production from UK seaweeds: investigating variable pre-treatment and enzyme hydrolysis parameters

Open access
Kostas, Emily T., White, Daniel A., Cook, David J.·2020·BioEnergy Research

Abstract

Abstract This study describes the method development for bioethanol production from three species of seaweed.Laminaria digitata,Ulva lactucaand for the first timeDilsea carnosawere used as representatives of brown, green and red species of seaweed, respectively. Acid thermo-chemical and entirely aqueous (water) based pre-treatments were evaluated, using a range of sulphuric acid concentrations (0.125–2.5 M) and solids loading contents (5–25 % [w/v]; biomass: reactant) and different reaction times (5–30 min), with the aim of maximising the release of glucose following enzyme hydrolysis. A pre-treatment step for each of the three seaweeds was required and pre-treatment conditions were found to be specific to each seaweed species.Dilsea carnosaandU. lactucawere more suited with an aqueous (water-based) pre-treatment (yielding 125.0 and 360.0 mg of glucose/g of pre-treated seaweed, respectively), yet interestingly non pre-treatedD. carnosayielded 106.4 g g−1glucose.Laminaria digitatarequired a dilute acid thermo-chemical pre-treatment in order to liberate maximal glucose yields (218.9 mg glucose/g pre-treated seaweed). Fermentations withS. cerevisiaeNCYC2592 of the generated hydrolysates gave ethanol yields of 5.4 g L−1, 7.8 g L−1and 3.2 g L−1fromD. carnosa,U. lactucaandL. digitata, respectively. This study highlighted that entirely aqueous based pre-treatments are effective for seaweed biomass, yet bioethanol production alone may not make such bio-processes economically viable at large scale.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1007/s12155-019-10054-1

Cites

75 of 75 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The yeast may have consumed the bioethanol it produced, as bioethanol-producing yeast strains can assimilate bioethanol when favorable carbon sources such as glucose become depleted.

    “Furthermore, it may be possible that the yeast started to consume the bioethanol it had produced, as studies have suggested that bioethanol producing yeast strains have the ability to assimilate bioethanol when favorable carbon sources such as glucose become depleted (Kostas et al., 2020).”

    From High-pressure technology for Sargassum spp biomass pretreatment and fractionation in the third generation of bioethanol production (2021) · cites this paper as Kostas et al., 2020

    The Results and Discussion section on trial fermentations (page unavailable) discusses yeast converting glucose to ethanol and suggests low glucose or nutrient deficiency as explanations for slower fermentation. It does not address whether yeast consumes the ethanol it produced after glucose is depleted. Searches for ethanol assimilation and consumption after glucose depletion found no supporting passage in our copy. (LLM, conf=0.73)

    Experimental — accuracy not yet measured
  • Bioethanol-producing yeast strains have the ability to assimilate bioethanol when favorable carbon sources such as glucose become depleted.

    “studies have suggested that bioethanol producing yeast strains have the ability to assimilate bioethanol when favorable carbon sources such as glucose become depleted (Kostas et al., 2020).”

    From High-pressure technology for Sargassum spp biomass pretreatment and fractionation in the third generation of bioethanol production (2021) · cites this paper as Kostas et al., 2020

    The Results and Discussion section on trial fermentations says yeast convert glucose to ethanol and discusses slower fermentation when glucose is low. It does not say that yeast assimilate ethanol after glucose is depleted. Searches for ethanol assimilation, consumption after glucose exhaustion, and ethanol as a carbon source found no passage addressing that claim. (LLM, conf=0.73)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

1 of the 76 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Kostas, E. T., White, D. A., & Cook, D. J.
Affiliations
  • University of Nottingham (GB)
  • Plymouth Marine Laboratory (GB)
Corresponding author
Kostas, Emily T.
Venue
BioEnergy Research
Published
2019-10-26
Volume
13
Issue
1
Pages
271-285
ISSN
  • 1939-1234 (ISSN-L)
  • 1939-1242
OpenAlex
W2982120266
Cited by
56
References
76
Citations by year
2026: 7 · 2025: 8 · 2024: 9 · 2023: 7 · 2022: 9 · 2021: 10 · 2020: 6
FWCI
2.20
Type
journal article
Language
en
Open access
Locations
  • BioEnergy Research (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Repository@Nottingham (University of Nottingham) (publishedVersion, other-oa)
  • Repository@Nottingham (University of Nottingham) (submittedVersion, cc-by)
  • UCL Discovery (University College London) (submittedVersion)
Funders
Biotechnology and Biological Sciences Research Council (BB/0512083/1)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Biofuel production and bioconversion
  • Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Seaweed-derived Bioactive Compounds
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
Keywords
bioethanol production, seaweed biomass, Laminaria digitata, Ulva lactuca, acid pretreatment, sulfuric acid concentration, solid loading, enzymatic hydrolysis, glucose release, Saccharomyces cerevisiae, alcoholic fermentation

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review